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dsound: Primary buffer isn't an IDirectSoundBuffer8.
[wine/wine64.git] / dlls / ntdll / virtual.c
blobf2dd2992150ab7dbfb55bdfb7e5e06badfee128b
1 /*
2 * Win32 virtual memory functions
3 *
4 * Copyright 1997, 2002 Alexandre Julliard
5 *
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
10 *
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
15 *
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
19 */
20
21 #include "config.h"
22 #include "wine/port.h"
23
24 #include <assert.h>
25 #include <errno.h>
26 #ifdef HAVE_SYS_ERRNO_H
27 #include <sys/errno.h>
28 #endif
29 #include <fcntl.h>
30 #ifdef HAVE_UNISTD_H
31 # include <unistd.h>
32 #endif
33 #include <stdarg.h>
34 #include <stdlib.h>
35 #include <stdio.h>
36 #include <string.h>
37 #include <sys/types.h>
38 #ifdef HAVE_SYS_STAT_H
39 # include <sys/stat.h>
40 #endif
41 #ifdef HAVE_SYS_MMAN_H
42 # include <sys/mman.h>
43 #endif
44
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 "winioctl.h"
52 #include "wine/library.h"
53 #include "wine/server.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 typedef 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 BYTE flags; /* Allocation flags (VFLAG_*) */
77 BYTE protect; /* Protection for all pages at allocation time */
78 BYTE prot[1]; /* Protection byte for each page */
79 } FILE_VIEW;
80
81 /* Per-view flags */
82 #define VFLAG_SYSTEM 0x01 /* system view (underlying mmap not under our control) */
83 #define VFLAG_VALLOC 0x02 /* allocated by VirtualAlloc */
84
85 /* Conversion from VPROT_* to Win32 flags */
86 static const BYTE VIRTUAL_Win32Flags[16] =
87 {
88 PAGE_NOACCESS, /* 0 */
89 PAGE_READONLY, /* READ */
90 PAGE_READWRITE, /* WRITE */
91 PAGE_READWRITE, /* READ | WRITE */
92 PAGE_EXECUTE, /* EXEC */
93 PAGE_EXECUTE_READ, /* READ | EXEC */
94 PAGE_EXECUTE_READWRITE, /* WRITE | EXEC */
95 PAGE_EXECUTE_READWRITE, /* READ | WRITE | EXEC */
96 PAGE_WRITECOPY, /* WRITECOPY */
97 PAGE_WRITECOPY, /* READ | WRITECOPY */
98 PAGE_WRITECOPY, /* WRITE | WRITECOPY */
99 PAGE_WRITECOPY, /* READ | WRITE | WRITECOPY */
100 PAGE_EXECUTE_WRITECOPY, /* EXEC | WRITECOPY */
101 PAGE_EXECUTE_WRITECOPY, /* READ | EXEC | WRITECOPY */
102 PAGE_EXECUTE_WRITECOPY, /* WRITE | EXEC | WRITECOPY */
103 PAGE_EXECUTE_WRITECOPY /* READ | WRITE | EXEC | WRITECOPY */
104 };
105
106 static struct list views_list = LIST_INIT(views_list);
107
108 static RTL_CRITICAL_SECTION csVirtual;
109 static RTL_CRITICAL_SECTION_DEBUG critsect_debug =
110 {
111 0, 0, &csVirtual,
112 { &critsect_debug.ProcessLocksList, &critsect_debug.ProcessLocksList },
113 0, 0, { (DWORD_PTR)(__FILE__ ": csVirtual") }
114 };
115 static RTL_CRITICAL_SECTION csVirtual = { &critsect_debug, -1, 0, 0, 0, 0 };
116
117 #ifdef __i386__
118 /* These are always the same on an i386, and it will be faster this way */
119 # define page_mask 0xfff
120 # define page_shift 12
121 # define page_size 0x1000
122 /* Note: these are Windows limits, you cannot change them. */
123 # define ADDRESS_SPACE_LIMIT ((void *)0xc0000000) /* top of the total available address space */
124 # define USER_SPACE_LIMIT ((void *)0x7fff0000) /* top of the user address space */
125 #else
126 static UINT page_shift;
127 static UINT page_size;
128 static UINT_PTR page_mask;
129 # define ADDRESS_SPACE_LIMIT 0 /* no limit needed on other platforms */
130 # define USER_SPACE_LIMIT 0 /* no limit needed on other platforms */
131 #endif /* __i386__ */
132
133 #define ROUND_ADDR(addr,mask) \
134 ((void *)((UINT_PTR)(addr) & ~(UINT_PTR)(mask)))
135
136 #define ROUND_SIZE(addr,size) \
137 (((UINT)(size) + ((UINT_PTR)(addr) & page_mask) + page_mask) & ~page_mask)
138
139 #define VIRTUAL_DEBUG_DUMP_VIEW(view) \
140 do { if (TRACE_ON(virtual)) VIRTUAL_DumpView(view); } while (0)
141
142 static void *user_space_limit = USER_SPACE_LIMIT;
143 static void *preload_reserve_start;
144 static void *preload_reserve_end;
145 static int use_locks;
146 static int force_exec_prot; /* whether to force PROT_EXEC on all PROT_READ mmaps */
147
148
149 /***********************************************************************
150 * VIRTUAL_GetProtStr
151 */
152 static const char *VIRTUAL_GetProtStr( BYTE prot )
153 {
154 static char buffer[6];
155 buffer[0] = (prot & VPROT_COMMITTED) ? 'c' : '-';
156 buffer[1] = (prot & VPROT_GUARD) ? 'g' : '-';
157 buffer[2] = (prot & VPROT_READ) ? 'r' : '-';
158 buffer[3] = (prot & VPROT_WRITECOPY) ? 'W' : ((prot & VPROT_WRITE) ? 'w' : '-');
159 buffer[4] = (prot & VPROT_EXEC) ? 'x' : '-';
160 buffer[5] = 0;
161 return buffer;
162 }
163
164
165 /***********************************************************************
166 * VIRTUAL_GetUnixProt
167 *
168 * Convert page protections to protection for mmap/mprotect.
169 */
170 static int VIRTUAL_GetUnixProt( BYTE vprot )
171 {
172 int prot = 0;
173 if ((vprot & VPROT_COMMITTED) && !(vprot & VPROT_GUARD))
174 {
175 if (vprot & VPROT_READ) prot |= PROT_READ;
176 if (vprot & VPROT_WRITE) prot |= PROT_WRITE;
177 if (vprot & VPROT_WRITECOPY) prot |= PROT_WRITE;
178 if (vprot & VPROT_EXEC) prot |= PROT_EXEC;
179 }
180 if (!prot) prot = PROT_NONE;
181 return prot;
182 }
183
184
185 /***********************************************************************
186 * VIRTUAL_DumpView
187 */
188 static void VIRTUAL_DumpView( FILE_VIEW *view )
189 {
190 UINT i, count;
191 char *addr = view->base;
192 BYTE prot = view->prot[0];
193
194 TRACE( "View: %p - %p", addr, addr + view->size - 1 );
195 if (view->flags & VFLAG_SYSTEM)
196 TRACE( " (system)\n" );
197 else if (view->flags & VFLAG_VALLOC)
198 TRACE( " (valloc)\n" );
199 else if (view->mapping)
200 TRACE( " %p\n", view->mapping );
201 else
202 TRACE( " (anonymous)\n");
203
204 for (count = i = 1; i < view->size >> page_shift; i++, count++)
205 {
206 if (view->prot[i] == prot) continue;
207 TRACE( " %p - %p %s\n",
208 addr, addr + (count << page_shift) - 1, VIRTUAL_GetProtStr(prot) );
209 addr += (count << page_shift);
210 prot = view->prot[i];
211 count = 0;
212 }
213 if (count)
214 TRACE( " %p - %p %s\n",
215 addr, addr + (count << page_shift) - 1, VIRTUAL_GetProtStr(prot) );
216 }
217
218
219 /***********************************************************************
220 * VIRTUAL_Dump
221 */
222 #if WINE_VM_DEBUG
223 static void VIRTUAL_Dump(void)
224 {
225 sigset_t sigset;
226 struct file_view *view;
227
228 TRACE( "Dump of all virtual memory views:\n" );
229 server_enter_uninterrupted_section( &csVirtual, &sigset );
230 LIST_FOR_EACH_ENTRY( view, &views_list, FILE_VIEW, entry )
231 {
232 VIRTUAL_DumpView( view );
233 }
234 server_leave_uninterrupted_section( &csVirtual, &sigset );
235 }
236 #endif
237
238
239 /***********************************************************************
240 * VIRTUAL_FindView
241 *
242 * Find the view containing a given address. The csVirtual section must be held by caller.
243 *
244 * PARAMS
245 * addr [I] Address
246 *
247 * RETURNS
248 * View: Success
249 * NULL: Failure
250 */
251 static struct file_view *VIRTUAL_FindView( const void *addr )
252 {
253 struct file_view *view;
254
255 LIST_FOR_EACH_ENTRY( view, &views_list, struct file_view, entry )
256 {
257 if (view->base > addr) break;
258 if ((const char*)view->base + view->size > (const char*)addr) return view;
259 }
260 return NULL;
261 }
262
263
264 /***********************************************************************
265 * get_mask
266 */
267 static inline UINT_PTR get_mask( ULONG zero_bits )
268 {
269 if (!zero_bits) return 0xffff; /* allocations are aligned to 64K by default */
270 if (zero_bits < page_shift) zero_bits = page_shift;
271 return (1 << zero_bits) - 1;
272 }
273
274
275 /***********************************************************************
276 * find_view_range
277 *
278 * Find the first view overlapping at least part of the specified range.
279 * The csVirtual section must be held by caller.
280 */
281 static struct file_view *find_view_range( const void *addr, size_t size )
282 {
283 struct file_view *view;
284
285 LIST_FOR_EACH_ENTRY( view, &views_list, struct file_view, entry )
286 {
287 if ((const char *)view->base >= (const char *)addr + size) break;
288 if ((const char *)view->base + view->size > (const char *)addr) return view;
289 }
290 return NULL;
291 }
292
293
294 /***********************************************************************
295 * find_free_area
296 *
297 * Find a free area between views inside the specified range.
298 * The csVirtual section must be held by caller.
299 */
300 static void *find_free_area( void *base, void *end, size_t size, size_t mask, int top_down )
301 {
302 struct list *ptr;
303 void *start;
304
305 if (top_down)
306 {
307 start = ROUND_ADDR( (char *)end - size, mask );
308 if (start >= end || start < base) return NULL;
309
310 for (ptr = views_list.prev; ptr != &views_list; ptr = ptr->prev)
311 {
312 struct file_view *view = LIST_ENTRY( ptr, struct file_view, entry );
313
314 if ((char *)view->base + view->size <= (char *)start) break;
315 if ((char *)view->base >= (char *)start + size) continue;
316 start = ROUND_ADDR( (char *)view->base - size, mask );
317 /* stop if remaining space is not large enough */
318 if (!start || start >= end || start < base) return NULL;
319 }
320 }
321 else
322 {
323 start = ROUND_ADDR( (char *)base + mask, mask );
324 if (start >= end || (char *)end - (char *)start < size) return NULL;
325
326 for (ptr = views_list.next; ptr != &views_list; ptr = ptr->next)
327 {
328 struct file_view *view = LIST_ENTRY( ptr, struct file_view, entry );
329
330 if ((char *)view->base >= (char *)start + size) break;
331 if ((char *)view->base + view->size <= (char *)start) continue;
332 start = ROUND_ADDR( (char *)view->base + view->size + mask, mask );
333 /* stop if remaining space is not large enough */
334 if (!start || start >= end || (char *)end - (char *)start < size) return NULL;
335 }
336 }
337 return start;
338 }
339
340
341 /***********************************************************************
342 * add_reserved_area
343 *
344 * Add a reserved area to the list maintained by libwine.
345 * The csVirtual section must be held by caller.
346 */
347 static void add_reserved_area( void *addr, size_t size )
348 {
349 TRACE( "adding %p-%p\n", addr, (char *)addr + size );
350
351 if (addr < user_space_limit)
352 {
353 /* unmap the part of the area that is below the limit */
354 assert( (char *)addr + size > (char *)user_space_limit );
355 munmap( addr, (char *)user_space_limit - (char *)addr );
356 size -= (char *)user_space_limit - (char *)addr;
357 addr = user_space_limit;
358 }
359 /* blow away existing mappings */
360 wine_anon_mmap( addr, size, PROT_NONE, MAP_NORESERVE | MAP_FIXED );
361 wine_mmap_add_reserved_area( addr, size );
362 }
363
364
365 /***********************************************************************
366 * is_beyond_limit
367 *
368 * Check if an address range goes beyond a given limit.
369 */
370 static inline int is_beyond_limit( void *addr, size_t size, void *limit )
371 {
372 return (limit && (addr >= limit || (char *)addr + size > (char *)limit));
373 }
374
375
376 /***********************************************************************
377 * unmap_area
378 *
379 * Unmap an area, or simply replace it by an empty mapping if it is
380 * in a reserved area. The csVirtual section must be held by caller.
381 */
382 static inline void unmap_area( void *addr, size_t size )
383 {
384 if (wine_mmap_is_in_reserved_area( addr, size ))
385 wine_anon_mmap( addr, size, PROT_NONE, MAP_NORESERVE | MAP_FIXED );
386 else if (is_beyond_limit( addr, size, user_space_limit ))
387 add_reserved_area( addr, size );
388 else
389 munmap( addr, size );
390 }
391
392
393 /***********************************************************************
394 * delete_view
395 *
396 * Deletes a view. The csVirtual section must be held by caller.
397 */
398 static void delete_view( struct file_view *view ) /* [in] View */
399 {
400 if (!(view->flags & VFLAG_SYSTEM)) unmap_area( view->base, view->size );
401 list_remove( &view->entry );
402 if (view->mapping) NtClose( view->mapping );
403 free( view );
404 }
405
406
407 /***********************************************************************
408 * create_view
409 *
410 * Create a view. The csVirtual section must be held by caller.
411 */
412 static NTSTATUS create_view( struct file_view **view_ret, void *base, size_t size, BYTE vprot )
413 {
414 struct file_view *view;
415 struct list *ptr;
416 int unix_prot = VIRTUAL_GetUnixProt( vprot );
417
418 assert( !((UINT_PTR)base & page_mask) );
419 assert( !(size & page_mask) );
420
421 /* Create the view structure */
422
423 if (!(view = malloc( sizeof(*view) + (size >> page_shift) - 1 ))) return STATUS_NO_MEMORY;
424
425 view->base = base;
426 view->size = size;
427 view->flags = 0;
428 view->mapping = 0;
429 view->protect = vprot;
430 memset( view->prot, vprot & ~VPROT_IMAGE, size >> page_shift );
431
432 /* Insert it in the linked list */
433
434 LIST_FOR_EACH( ptr, &views_list )
435 {
436 struct file_view *next = LIST_ENTRY( ptr, struct file_view, entry );
437 if (next->base > base) break;
438 }
439 list_add_before( ptr, &view->entry );
440
441 /* Check for overlapping views. This can happen if the previous view
442 * was a system view that got unmapped behind our back. In that case
443 * we recover by simply deleting it. */
444
445 if ((ptr = list_prev( &views_list, &view->entry )) != NULL)
446 {
447 struct file_view *prev = LIST_ENTRY( ptr, struct file_view, entry );
448 if ((char *)prev->base + prev->size > (char *)base)
449 {
450 TRACE( "overlapping prev view %p-%p for %p-%p\n",
451 prev->base, (char *)prev->base + prev->size,
452 base, (char *)base + view->size );
453 assert( prev->flags & VFLAG_SYSTEM );
454 delete_view( prev );
455 }
456 }
457 if ((ptr = list_next( &views_list, &view->entry )) != NULL)
458 {
459 struct file_view *next = LIST_ENTRY( ptr, struct file_view, entry );
460 if ((char *)base + view->size > (char *)next->base)
461 {
462 TRACE( "overlapping next view %p-%p for %p-%p\n",
463 next->base, (char *)next->base + next->size,
464 base, (char *)base + view->size );
465 assert( next->flags & VFLAG_SYSTEM );
466 delete_view( next );
467 }
468 }
469
470 *view_ret = view;
471 VIRTUAL_DEBUG_DUMP_VIEW( view );
472
473 if (force_exec_prot && (unix_prot & PROT_READ) && !(unix_prot & PROT_EXEC))
474 {
475 TRACE( "forcing exec permission on %p-%p\n", base, (char *)base + size - 1 );
476 mprotect( base, size, unix_prot | PROT_EXEC );
477 }
478 return STATUS_SUCCESS;
479 }
480
481
482 /***********************************************************************
483 * VIRTUAL_GetWin32Prot
484 *
485 * Convert page protections to Win32 flags.
486 */
487 static DWORD VIRTUAL_GetWin32Prot( BYTE vprot )
488 {
489 DWORD ret = VIRTUAL_Win32Flags[vprot & 0x0f];
490 if (vprot & VPROT_NOCACHE) ret |= PAGE_NOCACHE;
491 if (vprot & VPROT_GUARD) ret |= PAGE_GUARD;
492 return ret;
493 }
494
495
496 /***********************************************************************
497 * VIRTUAL_GetProt
498 *
499 * Build page protections from Win32 flags.
500 *
501 * PARAMS
502 * protect [I] Win32 protection flags
503 *
504 * RETURNS
505 * Value of page protection flags
506 */
507 static BYTE VIRTUAL_GetProt( DWORD protect )
508 {
509 BYTE vprot;
510
511 switch(protect & 0xff)
512 {
513 case PAGE_READONLY:
514 vprot = VPROT_READ;
515 break;
516 case PAGE_READWRITE:
517 vprot = VPROT_READ | VPROT_WRITE;
518 break;
519 case PAGE_WRITECOPY:
520 /* MSDN CreateFileMapping() states that if PAGE_WRITECOPY is given,
521 * that the hFile must have been opened with GENERIC_READ and
522 * GENERIC_WRITE access. This is WRONG as tests show that you
523 * only need GENERIC_READ access (at least for Win9x,
524 * FIXME: what about NT?). Thus, we don't put VPROT_WRITE in
525 * PAGE_WRITECOPY and PAGE_EXECUTE_WRITECOPY.
526 */
527 vprot = VPROT_READ | VPROT_WRITECOPY;
528 break;
529 case PAGE_EXECUTE:
530 vprot = VPROT_EXEC;
531 break;
532 case PAGE_EXECUTE_READ:
533 vprot = VPROT_EXEC | VPROT_READ;
534 break;
535 case PAGE_EXECUTE_READWRITE:
536 vprot = VPROT_EXEC | VPROT_READ | VPROT_WRITE;
537 break;
538 case PAGE_EXECUTE_WRITECOPY:
539 /* See comment for PAGE_WRITECOPY above */
540 vprot = VPROT_EXEC | VPROT_READ | VPROT_WRITECOPY;
541 break;
542 case PAGE_NOACCESS:
543 default:
544 vprot = 0;
545 break;
546 }
547 if (protect & PAGE_GUARD) vprot |= VPROT_GUARD;
548 if (protect & PAGE_NOCACHE) vprot |= VPROT_NOCACHE;
549 return vprot;
550 }
551
552
553 /***********************************************************************
554 * VIRTUAL_SetProt
555 *
556 * Change the protection of a range of pages.
557 *
558 * RETURNS
559 * TRUE: Success
560 * FALSE: Failure
561 */
562 static BOOL VIRTUAL_SetProt( FILE_VIEW *view, /* [in] Pointer to view */
563 void *base, /* [in] Starting address */
564 size_t size, /* [in] Size in bytes */
565 BYTE vprot ) /* [in] Protections to use */
566 {
567 int unix_prot = VIRTUAL_GetUnixProt(vprot);
568
569 TRACE("%p-%p %s\n",
570 base, (char *)base + size - 1, VIRTUAL_GetProtStr( vprot ) );
571
572 if (force_exec_prot && (unix_prot & PROT_READ) && !(unix_prot & PROT_EXEC))
573 {
574 TRACE( "forcing exec permission on %p-%p\n", base, (char *)base + size - 1 );
575 if (!mprotect( base, size, unix_prot | PROT_EXEC )) goto done;
576 /* exec + write may legitimately fail, in that case fall back to write only */
577 if (!(unix_prot & PROT_WRITE)) return FALSE;
578 }
579
580 if (mprotect( base, size, unix_prot )) return FALSE; /* FIXME: last error */
581
582 done:
583 memset( view->prot + (((char *)base - (char *)view->base) >> page_shift),
584 vprot, size >> page_shift );
585 VIRTUAL_DEBUG_DUMP_VIEW( view );
586 return TRUE;
587 }
588
589
590 /***********************************************************************
591 * unmap_extra_space
592 *
593 * Release the extra memory while keeping the range starting on the granularity boundary.
594 */
595 static inline void *unmap_extra_space( void *ptr, size_t total_size, size_t wanted_size, size_t mask )
596 {
597 if ((ULONG_PTR)ptr & mask)
598 {
599 size_t extra = mask + 1 - ((ULONG_PTR)ptr & mask);
600 munmap( ptr, extra );
601 ptr = (char *)ptr + extra;
602 total_size -= extra;
603 }
604 if (total_size > wanted_size)
605 munmap( (char *)ptr + wanted_size, total_size - wanted_size );
606 return ptr;
607 }
608
609
610 struct alloc_area
611 {
612 size_t size;
613 size_t mask;
614 int top_down;
615 void *result;
616 };
617
618 /***********************************************************************
619 * alloc_reserved_area_callback
620 *
621 * Try to map some space inside a reserved area. Callback for wine_mmap_enum_reserved_areas.
622 */
623 static int alloc_reserved_area_callback( void *start, size_t size, void *arg )
624 {
625 static void * const address_space_start = (void *)0x110000;
626 struct alloc_area *alloc = arg;
627 void *end = (char *)start + size;
628
629 if (start < address_space_start) start = address_space_start;
630 if (user_space_limit && end > user_space_limit) end = user_space_limit;
631 if (start >= end) return 0;
632
633 /* make sure we don't touch the preloader reserved range */
634 if (preload_reserve_end >= start)
635 {
636 if (preload_reserve_end >= end)
637 {
638 if (preload_reserve_start <= start) return 0; /* no space in that area */
639 if (preload_reserve_start < end) end = preload_reserve_start;
640 }
641 else if (preload_reserve_start <= start) start = preload_reserve_end;
642 else
643 {
644 /* range is split in two by the preloader reservation, try first part */
645 if ((alloc->result = find_free_area( start, preload_reserve_start, alloc->size,
646 alloc->mask, alloc->top_down )))
647 return 1;
648 /* then fall through to try second part */
649 start = preload_reserve_end;
650 }
651 }
652 if ((alloc->result = find_free_area( start, end, alloc->size, alloc->mask, alloc->top_down )))
653 return 1;
654
655 return 0;
656 }
657
658
659 /***********************************************************************
660 * map_view
661 *
662 * Create a view and mmap the corresponding memory area.
663 * The csVirtual section must be held by caller.
664 */
665 static NTSTATUS map_view( struct file_view **view_ret, void *base, size_t size, size_t mask,
666 int top_down, BYTE vprot )
667 {
668 void *ptr;
669 NTSTATUS status;
670
671 if (base)
672 {
673 if (is_beyond_limit( base, size, ADDRESS_SPACE_LIMIT ))
674 return STATUS_WORKING_SET_LIMIT_RANGE;
675
676 switch (wine_mmap_is_in_reserved_area( base, size ))
677 {
678 case -1: /* partially in a reserved area */
679 return STATUS_CONFLICTING_ADDRESSES;
680
681 case 0: /* not in a reserved area, do a normal allocation */
682 if ((ptr = wine_anon_mmap( base, size, VIRTUAL_GetUnixProt(vprot), 0 )) == (void *)-1)
683 {
684 if (errno == ENOMEM) return STATUS_NO_MEMORY;
685 return STATUS_INVALID_PARAMETER;
686 }
687 if (ptr != base)
688 {
689 /* We couldn't get the address we wanted */
690 if (is_beyond_limit( ptr, size, user_space_limit )) add_reserved_area( ptr, size );
691 else munmap( ptr, size );
692 return STATUS_CONFLICTING_ADDRESSES;
693 }
694 break;
695
696 default:
697 case 1: /* in a reserved area, make sure the address is available */
698 if (find_view_range( base, size )) return STATUS_CONFLICTING_ADDRESSES;
699 /* replace the reserved area by our mapping */
700 if ((ptr = wine_anon_mmap( base, size, VIRTUAL_GetUnixProt(vprot), MAP_FIXED )) != base)
701 return STATUS_INVALID_PARAMETER;
702 break;
703 }
704 }
705 else
706 {
707 size_t view_size = size + mask + 1;
708 struct alloc_area alloc;
709
710 alloc.size = size;
711 alloc.mask = mask;
712 alloc.top_down = top_down;
713 if (wine_mmap_enum_reserved_areas( alloc_reserved_area_callback, &alloc, top_down ))
714 {
715 ptr = alloc.result;
716 TRACE( "got mem in reserved area %p-%p\n", ptr, (char *)ptr + size );
717 if (wine_anon_mmap( ptr, size, VIRTUAL_GetUnixProt(vprot), MAP_FIXED ) != ptr)
718 return STATUS_INVALID_PARAMETER;
719 goto done;
720 }
721
722 for (;;)
723 {
724 if ((ptr = wine_anon_mmap( NULL, view_size, VIRTUAL_GetUnixProt(vprot), 0 )) == (void *)-1)
725 {
726 if (errno == ENOMEM) return STATUS_NO_MEMORY;
727 return STATUS_INVALID_PARAMETER;
728 }
729 TRACE( "got mem with anon mmap %p-%p\n", ptr, (char *)ptr + size );
730 /* if we got something beyond the user limit, unmap it and retry */
731 if (is_beyond_limit( ptr, view_size, user_space_limit )) add_reserved_area( ptr, view_size );
732 else break;
733 }
734 ptr = unmap_extra_space( ptr, view_size, size, mask );
735 }
736 done:
737 status = create_view( view_ret, ptr, size, vprot );
738 if (status != STATUS_SUCCESS) unmap_area( ptr, size );
739 return status;
740 }
741
742
743 /***********************************************************************
744 * unaligned_mmap
745 *
746 * Linux kernels before 2.4.x can support non page-aligned offsets, as
747 * long as the offset is aligned to the filesystem block size. This is
748 * a big performance gain so we want to take advantage of it.
749 *
750 * However, when we use 64-bit file support this doesn't work because
751 * glibc rejects unaligned offsets. Also glibc 2.1.3 mmap64 is broken
752 * in that it rounds unaligned offsets down to a page boundary. For
753 * these reasons we do a direct system call here.
754 */
755 static void *unaligned_mmap( void *addr, size_t length, unsigned int prot,
756 unsigned int flags, int fd, off_t offset )
757 {
758 #if defined(linux) && defined(__i386__) && defined(__GNUC__)
759 if (!(offset >> 32) && (offset & page_mask))
760 {
761 int ret;
762
763 struct
764 {
765 void *addr;
766 unsigned int length;
767 unsigned int prot;
768 unsigned int flags;
769 unsigned int fd;
770 unsigned int offset;
771 } args;
772
773 args.addr = addr;
774 args.length = length;
775 args.prot = prot;
776 args.flags = flags;
777 args.fd = fd;
778 args.offset = offset;
779
780 __asm__ __volatile__("push %%ebx\n\t"
781 "movl %2,%%ebx\n\t"
782 "int $0x80\n\t"
783 "popl %%ebx"
784 : "=a" (ret)
785 : "0" (90), /* SYS_mmap */
786 "q" (&args)
787 : "memory" );
788 if (ret < 0 && ret > -4096)
789 {
790 errno = -ret;
791 ret = -1;
792 }
793 return (void *)ret;
794 }
795 #endif
796 return mmap( addr, length, prot, flags, fd, offset );
797 }
798
799
800 /***********************************************************************
801 * map_file_into_view
802 *
803 * Wrapper for mmap() to map a file into a view, falling back to read if mmap fails.
804 * The csVirtual section must be held by caller.
805 */
806 static NTSTATUS map_file_into_view( struct file_view *view, int fd, size_t start, size_t size,
807 off_t offset, BYTE vprot, BOOL removable )
808 {
809 void *ptr;
810 int prot = VIRTUAL_GetUnixProt( vprot );
811 BOOL shared_write = (vprot & VPROT_WRITE) != 0;
812
813 assert( start < view->size );
814 assert( start + size <= view->size );
815
816 /* only try mmap if media is not removable (or if we require write access) */
817 if (!removable || shared_write)
818 {
819 int flags = MAP_FIXED | (shared_write ? MAP_SHARED : MAP_PRIVATE);
820
821 if (unaligned_mmap( (char *)view->base + start, size, prot, flags, fd, offset ) != (void *)-1)
822 goto done;
823
824 /* mmap() failed; if this is because the file offset is not */
825 /* page-aligned (EINVAL), or because the underlying filesystem */
826 /* does not support mmap() (ENOEXEC,ENODEV), we do it by hand. */
827 if ((errno != ENOEXEC) && (errno != EINVAL) && (errno != ENODEV)) return FILE_GetNtStatus();
828 if (shared_write) return FILE_GetNtStatus(); /* we cannot fake shared write mappings */
829 }
830
831 /* Reserve the memory with an anonymous mmap */
832 ptr = wine_anon_mmap( (char *)view->base + start, size, PROT_READ | PROT_WRITE, MAP_FIXED );
833 if (ptr == (void *)-1) return FILE_GetNtStatus();
834 /* Now read in the file */
835 pread( fd, ptr, size, offset );
836 if (prot != (PROT_READ|PROT_WRITE)) mprotect( ptr, size, prot ); /* Set the right protection */
837 done:
838 memset( view->prot + (start >> page_shift), vprot, ROUND_SIZE(start,size) >> page_shift );
839 return STATUS_SUCCESS;
840 }
841
842
843 /***********************************************************************
844 * decommit_view
845 *
846 * Decommit some pages of a given view.
847 * The csVirtual section must be held by caller.
848 */
849 static NTSTATUS decommit_pages( struct file_view *view, size_t start, size_t size )
850 {
851 if (wine_anon_mmap( (char *)view->base + start, size, PROT_NONE, MAP_FIXED ) != (void *)-1)
852 {
853 BYTE *p = view->prot + (start >> page_shift);
854 size >>= page_shift;
855 while (size--) *p++ &= ~VPROT_COMMITTED;
856 return STATUS_SUCCESS;
857 }
858 return FILE_GetNtStatus();
859 }
860
861
862 /***********************************************************************
863 * do_relocations
864 *
865 * Apply the relocations to a mapped PE image
866 */
867 static int do_relocations( char *base, const IMAGE_DATA_DIRECTORY *dir,
868 int delta, SIZE_T total_size )
869 {
870 IMAGE_BASE_RELOCATION *rel;
871
872 TRACE_(module)( "relocating from %p-%p to %p-%p\n",
873 base - delta, base - delta + total_size, base, base + total_size );
874
875 for (rel = (IMAGE_BASE_RELOCATION *)(base + dir->VirtualAddress);
876 ((char *)rel < base + dir->VirtualAddress + dir->Size) && rel->SizeOfBlock;
877 rel = (IMAGE_BASE_RELOCATION*)((char*)rel + rel->SizeOfBlock) )
878 {
879 char *page = base + rel->VirtualAddress;
880 WORD *TypeOffset = (WORD *)(rel + 1);
881 int i, count = (rel->SizeOfBlock - sizeof(*rel)) / sizeof(*TypeOffset);
882
883 if (!count) continue;
884
885 /* sanity checks */
886 if ((char *)rel + rel->SizeOfBlock > base + dir->VirtualAddress + dir->Size)
887 {
888 ERR_(module)("invalid relocation %p,%x,%d at %p,%x,%x\n",
889 rel, rel->VirtualAddress, rel->SizeOfBlock,
890 base, dir->VirtualAddress, dir->Size );
891 return 0;
892 }
893
894 if (page > base + total_size)
895 {
896 WARN_(module)("skipping %d relocations for page %p beyond module %p-%p\n",
897 count, page, base, base + total_size );
898 continue;
899 }
900
901 TRACE_(module)("%d relocations for page %x\n", count, rel->VirtualAddress);
902
903 /* patching in reverse order */
904 for (i = 0 ; i < count; i++)
905 {
906 int offset = TypeOffset[i] & 0xFFF;
907 int type = TypeOffset[i] >> 12;
908 switch(type)
909 {
910 case IMAGE_REL_BASED_ABSOLUTE:
911 break;
912 case IMAGE_REL_BASED_HIGH:
913 *(short*)(page+offset) += HIWORD(delta);
914 break;
915 case IMAGE_REL_BASED_LOW:
916 *(short*)(page+offset) += LOWORD(delta);
917 break;
918 case IMAGE_REL_BASED_HIGHLOW:
919 *(int*)(page+offset) += delta;
920 /* FIXME: if this is an exported address, fire up enhanced logic */
921 break;
922 default:
923 FIXME_(module)("Unknown/unsupported fixup type %d.\n", type);
924 break;
925 }
926 }
927 }
928 return 1;
929 }
930
931
932 /***********************************************************************
933 * map_image
934 *
935 * Map an executable (PE format) image into memory.
936 */
937 static NTSTATUS map_image( HANDLE hmapping, int fd, char *base, SIZE_T total_size, SIZE_T mask,
938 SIZE_T header_size, int shared_fd, HANDLE dup_mapping, PVOID *addr_ptr )
939 {
940 IMAGE_DOS_HEADER *dos;
941 IMAGE_NT_HEADERS *nt;
942 IMAGE_SECTION_HEADER *sec;
943 IMAGE_DATA_DIRECTORY *imports;
944 NTSTATUS status = STATUS_CONFLICTING_ADDRESSES;
945 int i;
946 off_t pos;
947 sigset_t sigset;
948 struct stat st;
949 struct file_view *view = NULL;
950 char *ptr, *header_end;
951
952 /* zero-map the whole range */
953
954 server_enter_uninterrupted_section( &csVirtual, &sigset );
955
956 if (base >= (char *)0x110000) /* make sure the DOS area remains free */
957 status = map_view( &view, base, total_size, mask, FALSE,
958 VPROT_COMMITTED | VPROT_READ | VPROT_EXEC | VPROT_WRITECOPY | VPROT_IMAGE );
959
960 if (status == STATUS_CONFLICTING_ADDRESSES)
961 status = map_view( &view, NULL, total_size, mask, FALSE,
962 VPROT_COMMITTED | VPROT_READ | VPROT_EXEC | VPROT_WRITECOPY | VPROT_IMAGE );
963
964 if (status != STATUS_SUCCESS) goto error;
965
966 ptr = view->base;
967 TRACE_(module)( "mapped PE file at %p-%p\n", ptr, ptr + total_size );
968
969 /* map the header */
970
971 if (fstat( fd, &st ) == -1)
972 {
973 status = FILE_GetNtStatus();
974 goto error;
975 }
976 status = STATUS_INVALID_IMAGE_FORMAT; /* generic error */
977 if (!st.st_size) goto error;
978 header_size = min( header_size, st.st_size );
979 if (map_file_into_view( view, fd, 0, header_size, 0, VPROT_COMMITTED | VPROT_READ | VPROT_WRITECOPY,
980 !dup_mapping ) != STATUS_SUCCESS) goto error;
981 dos = (IMAGE_DOS_HEADER *)ptr;
982 nt = (IMAGE_NT_HEADERS *)(ptr + dos->e_lfanew);
983 header_end = ptr + ROUND_SIZE( 0, header_size );
984 memset( ptr + header_size, 0, header_end - (ptr + header_size) );
985 if ((char *)(nt + 1) > header_end) goto error;
986 sec = (IMAGE_SECTION_HEADER*)((char*)&nt->OptionalHeader+nt->FileHeader.SizeOfOptionalHeader);
987 if ((char *)(sec + nt->FileHeader.NumberOfSections) > header_end) goto error;
988
989 imports = nt->OptionalHeader.DataDirectory + IMAGE_DIRECTORY_ENTRY_IMPORT;
990 if (!imports->Size || !imports->VirtualAddress) imports = NULL;
991
992 /* check the architecture */
993
994 if (nt->FileHeader.Machine != IMAGE_FILE_MACHINE_I386)
995 {
996 MESSAGE("Trying to load PE image for unsupported architecture (");
997 switch (nt->FileHeader.Machine)
998 {
999 case IMAGE_FILE_MACHINE_UNKNOWN: MESSAGE("Unknown"); break;
1000 case IMAGE_FILE_MACHINE_I860: MESSAGE("I860"); break;
1001 case IMAGE_FILE_MACHINE_R3000: MESSAGE("R3000"); break;
1002 case IMAGE_FILE_MACHINE_R4000: MESSAGE("R4000"); break;
1003 case IMAGE_FILE_MACHINE_R10000: MESSAGE("R10000"); break;
1004 case IMAGE_FILE_MACHINE_ALPHA: MESSAGE("Alpha"); break;
1005 case IMAGE_FILE_MACHINE_POWERPC: MESSAGE("PowerPC"); break;
1006 case IMAGE_FILE_MACHINE_IA64: MESSAGE("IA-64"); break;
1007 case IMAGE_FILE_MACHINE_ALPHA64: MESSAGE("Alpha-64"); break;
1008 case IMAGE_FILE_MACHINE_AMD64: MESSAGE("AMD-64"); break;
1009 case IMAGE_FILE_MACHINE_ARM: MESSAGE("ARM"); break;
1010 default: MESSAGE("Unknown-%04x", nt->FileHeader.Machine); break;
1011 }
1012 MESSAGE(")\n");
1013 goto error;
1014 }
1015
1016 /* check for non page-aligned binary */
1017
1018 if (nt->OptionalHeader.SectionAlignment <= page_mask)
1019 {
1020 /* unaligned sections, this happens for native subsystem binaries */
1021 /* in that case Windows simply maps in the whole file */
1022
1023 if (map_file_into_view( view, fd, 0, total_size, 0, VPROT_COMMITTED | VPROT_READ,
1024 !dup_mapping ) != STATUS_SUCCESS) goto error;
1025
1026 /* check that all sections are loaded at the right offset */
1027 if (nt->OptionalHeader.FileAlignment != nt->OptionalHeader.SectionAlignment) goto error;
1028 for (i = 0; i < nt->FileHeader.NumberOfSections; i++)
1029 {
1030 if (sec[i].VirtualAddress != sec[i].PointerToRawData)
1031 goto error; /* Windows refuses to load in that case too */
1032 }
1033
1034 /* set the image protections */
1035 VIRTUAL_SetProt( view, ptr, total_size,
1036 VPROT_COMMITTED | VPROT_READ | VPROT_WRITECOPY | VPROT_EXEC );
1037
1038 /* perform relocations if necessary */
1039 /* FIXME: not 100% compatible, Windows doesn't do this for non page-aligned binaries */
1040 if (ptr != base)
1041 {
1042 const IMAGE_DATA_DIRECTORY *relocs;
1043 relocs = &nt->OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_BASERELOC];
1044 if (relocs->VirtualAddress && relocs->Size)
1045 do_relocations( ptr, relocs, ptr - base, total_size );
1046 }
1047
1048 goto done;
1049 }
1050
1051
1052 /* map all the sections */
1053
1054 for (i = pos = 0; i < nt->FileHeader.NumberOfSections; i++, sec++)
1055 {
1056 static const SIZE_T sector_align = 0x1ff;
1057 SIZE_T map_size, file_start, file_size, end;
1058
1059 if (!sec->Misc.VirtualSize)
1060 map_size = ROUND_SIZE( 0, sec->SizeOfRawData );
1061 else
1062 map_size = ROUND_SIZE( 0, sec->Misc.VirtualSize );
1063
1064 /* file positions are rounded to sector boundaries regardless of OptionalHeader.FileAlignment */
1065 file_start = sec->PointerToRawData & ~sector_align;
1066 file_size = (sec->SizeOfRawData + (sec->PointerToRawData & sector_align) + sector_align) & ~sector_align;
1067 if (file_size > map_size) file_size = map_size;
1068
1069 /* a few sanity checks */
1070 end = sec->VirtualAddress + ROUND_SIZE( sec->VirtualAddress, map_size );
1071 if (sec->VirtualAddress > total_size || end > total_size || end < sec->VirtualAddress)
1072 {
1073 WARN_(module)( "Section %.8s too large (%x+%lx/%lx)\n",
1074 sec->Name, sec->VirtualAddress, map_size, total_size );
1075 goto error;
1076 }
1077
1078 if ((sec->Characteristics & IMAGE_SCN_MEM_SHARED) &&
1079 (sec->Characteristics & IMAGE_SCN_MEM_WRITE))
1080 {
1081 TRACE_(module)( "mapping shared section %.8s at %p off %x (%x) size %lx (%lx) flags %x\n",
1082 sec->Name, ptr + sec->VirtualAddress,
1083 sec->PointerToRawData, (int)pos, file_size, map_size,
1084 sec->Characteristics );
1085 if (map_file_into_view( view, shared_fd, sec->VirtualAddress, map_size, pos,
1086 VPROT_COMMITTED | VPROT_READ | VPROT_WRITE,
1087 FALSE ) != STATUS_SUCCESS)
1088 {
1089 ERR_(module)( "Could not map shared section %.8s\n", sec->Name );
1090 goto error;
1091 }
1092
1093 /* check if the import directory falls inside this section */
1094 if (imports && imports->VirtualAddress >= sec->VirtualAddress &&
1095 imports->VirtualAddress < sec->VirtualAddress + map_size)
1096 {
1097 UINT_PTR base = imports->VirtualAddress & ~page_mask;
1098 UINT_PTR end = base + ROUND_SIZE( imports->VirtualAddress, imports->Size );
1099 if (end > sec->VirtualAddress + map_size) end = sec->VirtualAddress + map_size;
1100 if (end > base)
1101 map_file_into_view( view, shared_fd, base, end - base,
1102 pos + (base - sec->VirtualAddress),
1103 VPROT_COMMITTED | VPROT_READ | VPROT_WRITECOPY,
1104 FALSE );
1105 }
1106 pos += map_size;
1107 continue;
1108 }
1109
1110 TRACE_(module)( "mapping section %.8s at %p off %x size %x virt %x flags %x\n",
1111 sec->Name, ptr + sec->VirtualAddress,
1112 sec->PointerToRawData, sec->SizeOfRawData,
1113 sec->Misc.VirtualSize, sec->Characteristics );
1114
1115 if (!sec->PointerToRawData || !file_size) continue;
1116
1117 /* Note: if the section is not aligned properly map_file_into_view will magically
1118 * fall back to read(), so we don't need to check anything here.
1119 */
1120 end = file_start + file_size;
1121 if (sec->PointerToRawData >= st.st_size ||
1122 end > ((st.st_size + sector_align) & ~sector_align) ||
1123 end < file_start ||
1124 map_file_into_view( view, fd, sec->VirtualAddress, file_size, file_start,
1125 VPROT_COMMITTED | VPROT_READ | VPROT_WRITECOPY,
1126 !dup_mapping ) != STATUS_SUCCESS)
1127 {
1128 ERR_(module)( "Could not map section %.8s, file probably truncated\n", sec->Name );
1129 goto error;
1130 }
1131
1132 if (file_size & page_mask)
1133 {
1134 end = ROUND_SIZE( 0, file_size );
1135 if (end > map_size) end = map_size;
1136 TRACE_(module)("clearing %p - %p\n",
1137 ptr + sec->VirtualAddress + file_size,
1138 ptr + sec->VirtualAddress + end );
1139 memset( ptr + sec->VirtualAddress + file_size, 0, end - file_size );
1140 }
1141 }
1142
1143
1144 /* perform base relocation, if necessary */
1145
1146 if (ptr != base)
1147 {
1148 const IMAGE_DATA_DIRECTORY *relocs;
1149
1150 relocs = &nt->OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_BASERELOC];
1151 if (nt->FileHeader.Characteristics & IMAGE_FILE_RELOCS_STRIPPED)
1152 {
1153 WARN( "Need to relocate module from addr %x, but there are no relocation records\n",
1154 nt->OptionalHeader.ImageBase );
1155 status = STATUS_CONFLICTING_ADDRESSES;
1156 goto error;
1157 }
1158
1159 /* FIXME: If we need to relocate a system DLL (base > 2GB) we should
1160 * really make sure that the *new* base address is also > 2GB.
1161 * Some DLLs really check the MSB of the module handle :-/
1162 */
1163 if ((nt->OptionalHeader.ImageBase & 0x80000000) && !((ULONG_PTR)base & 0x80000000))
1164 ERR( "Forced to relocate system DLL (base > 2GB). This is not good.\n" );
1165
1166 if (!do_relocations( ptr, relocs, ptr - base, total_size ))
1167 {
1168 goto error;
1169 }
1170 }
1171
1172 /* set the image protections */
1173
1174 VIRTUAL_SetProt( view, ptr, ROUND_SIZE( 0, header_size ), VPROT_COMMITTED | VPROT_READ );
1175
1176 sec = (IMAGE_SECTION_HEADER*)((char *)&nt->OptionalHeader+nt->FileHeader.SizeOfOptionalHeader);
1177 for (i = 0; i < nt->FileHeader.NumberOfSections; i++, sec++)
1178 {
1179 SIZE_T size;
1180 BYTE vprot = VPROT_COMMITTED;
1181
1182 if (sec->Misc.VirtualSize)
1183 size = ROUND_SIZE( sec->VirtualAddress, sec->Misc.VirtualSize );
1184 else
1185 size = ROUND_SIZE( sec->VirtualAddress, sec->SizeOfRawData );
1186
1187 if (sec->Characteristics & IMAGE_SCN_MEM_READ) vprot |= VPROT_READ;
1188 if (sec->Characteristics & IMAGE_SCN_MEM_WRITE) vprot |= VPROT_READ|VPROT_WRITECOPY;
1189 if (sec->Characteristics & IMAGE_SCN_MEM_EXECUTE) vprot |= VPROT_EXEC;
1190
1191 /* Dumb game crack lets the AOEP point into a data section. Adjust. */
1192 if ((nt->OptionalHeader.AddressOfEntryPoint >= sec->VirtualAddress) &&
1193 (nt->OptionalHeader.AddressOfEntryPoint < sec->VirtualAddress + size))
1194 vprot |= VPROT_EXEC;
1195
1196 VIRTUAL_SetProt( view, ptr + sec->VirtualAddress, size, vprot );
1197 }
1198
1199 done:
1200 view->mapping = dup_mapping;
1201 server_leave_uninterrupted_section( &csVirtual, &sigset );
1202
1203 *addr_ptr = ptr;
1204 return STATUS_SUCCESS;
1205
1206 error:
1207 if (view) delete_view( view );
1208 server_leave_uninterrupted_section( &csVirtual, &sigset );
1209 if (dup_mapping) NtClose( dup_mapping );
1210 return status;
1211 }
1212
1213
1214 /***********************************************************************
1215 * virtual_init
1216 */
1217 void virtual_init(void)
1218 {
1219 const char *preload;
1220 #ifndef page_mask
1221 page_size = getpagesize();
1222 page_mask = page_size - 1;
1223 /* Make sure we have a power of 2 */
1224 assert( !(page_size & page_mask) );
1225 page_shift = 0;
1226 while ((1 << page_shift) != page_size) page_shift++;
1227 #endif /* page_mask */
1228 if ((preload = getenv("WINEPRELOADRESERVE")))
1229 {
1230 unsigned long start, end;
1231 if (sscanf( preload, "%lx-%lx", &start, &end ) == 2)
1232 {
1233 preload_reserve_start = (void *)start;
1234 preload_reserve_end = (void *)end;
1235 }
1236 }
1237 }
1238
1239
1240 /***********************************************************************
1241 * virtual_init_threading
1242 */
1243 void virtual_init_threading(void)
1244 {
1245 use_locks = 1;
1246 }
1247
1248
1249 /***********************************************************************
1250 * VIRTUAL_HandleFault
1251 */
1252 NTSTATUS VIRTUAL_HandleFault( LPCVOID addr )
1253 {
1254 FILE_VIEW *view;
1255 NTSTATUS ret = STATUS_ACCESS_VIOLATION;
1256 sigset_t sigset;
1257
1258 server_enter_uninterrupted_section( &csVirtual, &sigset );
1259 if ((view = VIRTUAL_FindView( addr )))
1260 {
1261 void *page = ROUND_ADDR( addr, page_mask );
1262 BYTE vprot = view->prot[((const char *)page - (const char *)view->base) >> page_shift];
1263 if (vprot & VPROT_GUARD)
1264 {
1265 VIRTUAL_SetProt( view, page, page_size, vprot & ~VPROT_GUARD );
1266 ret = STATUS_GUARD_PAGE_VIOLATION;
1267 }
1268 }
1269 server_leave_uninterrupted_section( &csVirtual, &sigset );
1270 return ret;
1271 }
1272
1273
1274 /***********************************************************************
1275 * VIRTUAL_SetForceExec
1276 *
1277 * Whether to force exec prot on all views.
1278 */
1279 void VIRTUAL_SetForceExec( BOOL enable )
1280 {
1281 struct file_view *view;
1282 sigset_t sigset;
1283
1284 server_enter_uninterrupted_section( &csVirtual, &sigset );
1285 if (!force_exec_prot != !enable) /* change all existing views */
1286 {
1287 force_exec_prot = enable;
1288
1289 LIST_FOR_EACH_ENTRY( view, &views_list, struct file_view, entry )
1290 {
1291 UINT i, count;
1292 int unix_prot;
1293 char *addr = view->base;
1294 BYTE prot = view->prot[0];
1295
1296 for (count = i = 1; i < view->size >> page_shift; i++, count++)
1297 {
1298 if (view->prot[i] == prot) continue;
1299 unix_prot = VIRTUAL_GetUnixProt( prot );
1300 if ((unix_prot & PROT_READ) && !(unix_prot & PROT_EXEC))
1301 {
1302 TRACE( "%s exec prot for %p-%p\n",
1303 force_exec_prot ? "enabling" : "disabling",
1304 addr, addr + (count << page_shift) - 1 );
1305 mprotect( addr, count << page_shift,
1306 unix_prot | (force_exec_prot ? PROT_EXEC : 0) );
1307 }
1308 addr += (count << page_shift);
1309 prot = view->prot[i];
1310 count = 0;
1311 }
1312 if (count)
1313 {
1314 unix_prot = VIRTUAL_GetUnixProt( prot );
1315 if ((unix_prot & PROT_READ) && !(unix_prot & PROT_EXEC))
1316 {
1317 TRACE( "%s exec prot for %p-%p\n",
1318 force_exec_prot ? "enabling" : "disabling",
1319 addr, addr + (count << page_shift) - 1 );
1320 mprotect( addr, count << page_shift,
1321 unix_prot | (force_exec_prot ? PROT_EXEC : 0) );
1322 }
1323 }
1324 }
1325 }
1326 server_leave_uninterrupted_section( &csVirtual, &sigset );
1327 }
1328
1329
1330 /***********************************************************************
1331 * VIRTUAL_UseLargeAddressSpace
1332 *
1333 * Increase the address space size for apps that support it.
1334 */
1335 void VIRTUAL_UseLargeAddressSpace(void)
1336 {
1337 /* no large address space on win9x */
1338 if (NtCurrentTeb()->Peb->OSPlatformId != VER_PLATFORM_WIN32_NT) return;
1339 user_space_limit = ADDRESS_SPACE_LIMIT;
1340 }
1341
1342
1343 /***********************************************************************
1344 * NtAllocateVirtualMemory (NTDLL.@)
1345 * ZwAllocateVirtualMemory (NTDLL.@)
1346 */
1347 NTSTATUS WINAPI NtAllocateVirtualMemory( HANDLE process, PVOID *ret, ULONG zero_bits,
1348 SIZE_T *size_ptr, ULONG type, ULONG protect )
1349 {
1350 void *base;
1351 BYTE vprot;
1352 SIZE_T size = *size_ptr;
1353 SIZE_T mask = get_mask( zero_bits );
1354 NTSTATUS status = STATUS_SUCCESS;
1355 struct file_view *view;
1356 sigset_t sigset;
1357
1358 TRACE("%p %p %08lx %x %08x\n", process, *ret, size, type, protect );
1359
1360 if (!size) return STATUS_INVALID_PARAMETER;
1361
1362 if (process != NtCurrentProcess())
1363 {
1364 apc_call_t call;
1365 apc_result_t result;
1366
1367 call.virtual_alloc.type = APC_VIRTUAL_ALLOC;
1368 call.virtual_alloc.addr = *ret;
1369 call.virtual_alloc.size = *size_ptr;
1370 call.virtual_alloc.zero_bits = zero_bits;
1371 call.virtual_alloc.op_type = type;
1372 call.virtual_alloc.prot = protect;
1373 status = NTDLL_queue_process_apc( process, &call, &result );
1374 if (status != STATUS_SUCCESS) return status;
1375
1376 if (result.virtual_alloc.status == STATUS_SUCCESS)
1377 {
1378 *ret = result.virtual_alloc.addr;
1379 *size_ptr = result.virtual_alloc.size;
1380 }
1381 return result.virtual_alloc.status;
1382 }
1383
1384 /* Round parameters to a page boundary */
1385
1386 if (size > 0x7fc00000) return STATUS_WORKING_SET_LIMIT_RANGE; /* 2Gb - 4Mb */
1387
1388 if (*ret)
1389 {
1390 if (type & MEM_RESERVE) /* Round down to 64k boundary */
1391 base = ROUND_ADDR( *ret, mask );
1392 else
1393 base = ROUND_ADDR( *ret, page_mask );
1394 size = (((UINT_PTR)*ret + size + page_mask) & ~page_mask) - (UINT_PTR)base;
1395
1396 /* disallow low 64k, wrap-around and kernel space */
1397 if (((char *)base < (char *)0x10000) ||
1398 ((char *)base + size < (char *)base) ||
1399 is_beyond_limit( base, size, ADDRESS_SPACE_LIMIT ))
1400 return STATUS_INVALID_PARAMETER;
1401 }
1402 else
1403 {
1404 base = NULL;
1405 size = (size + page_mask) & ~page_mask;
1406 }
1407
1408 /* Compute the alloc type flags */
1409
1410 if (!(type & MEM_SYSTEM))
1411 {
1412 if (!(type & (MEM_COMMIT | MEM_RESERVE)) ||
1413 (type & ~(MEM_COMMIT | MEM_RESERVE | MEM_TOP_DOWN | MEM_WRITE_WATCH | MEM_RESET)))
1414 {
1415 WARN("called with wrong alloc type flags (%08x) !\n", type);
1416 return STATUS_INVALID_PARAMETER;
1417 }
1418 if (type & MEM_WRITE_WATCH)
1419 {
1420 FIXME("MEM_WRITE_WATCH type not supported\n");
1421 return STATUS_NOT_SUPPORTED;
1422 }
1423 }
1424 vprot = VIRTUAL_GetProt( protect );
1425 if (type & MEM_COMMIT) vprot |= VPROT_COMMITTED;
1426
1427 /* Reserve the memory */
1428
1429 if (use_locks) server_enter_uninterrupted_section( &csVirtual, &sigset );
1430
1431 if (type & MEM_SYSTEM)
1432 {
1433 if (type & MEM_IMAGE) vprot |= VPROT_IMAGE;
1434 status = create_view( &view, base, size, vprot | VPROT_COMMITTED );
1435 if (status == STATUS_SUCCESS)
1436 {
1437 view->flags |= VFLAG_VALLOC | VFLAG_SYSTEM;
1438 base = view->base;
1439 }
1440 }
1441 else if ((type & MEM_RESERVE) || !base)
1442 {
1443 status = map_view( &view, base, size, mask, type & MEM_TOP_DOWN, vprot );
1444 if (status == STATUS_SUCCESS)
1445 {
1446 view->flags |= VFLAG_VALLOC;
1447 base = view->base;
1448 }
1449 }
1450 else /* commit the pages */
1451 {
1452 if (!(view = VIRTUAL_FindView( base )) ||
1453 ((char *)base + size > (char *)view->base + view->size)) status = STATUS_NOT_MAPPED_VIEW;
1454 else if (!VIRTUAL_SetProt( view, base, size, vprot )) status = STATUS_ACCESS_DENIED;
1455 }
1456
1457 if (use_locks) server_leave_uninterrupted_section( &csVirtual, &sigset );
1458
1459 if (status == STATUS_SUCCESS)
1460 {
1461 *ret = base;
1462 *size_ptr = size;
1463 }
1464 return status;
1465 }
1466
1467
1468 /***********************************************************************
1469 * NtFreeVirtualMemory (NTDLL.@)
1470 * ZwFreeVirtualMemory (NTDLL.@)
1471 */
1472 NTSTATUS WINAPI NtFreeVirtualMemory( HANDLE process, PVOID *addr_ptr, SIZE_T *size_ptr, ULONG type )
1473 {
1474 FILE_VIEW *view;
1475 char *base;
1476 sigset_t sigset;
1477 NTSTATUS status = STATUS_SUCCESS;
1478 LPVOID addr = *addr_ptr;
1479 SIZE_T size = *size_ptr;
1480
1481 TRACE("%p %p %08lx %x\n", process, addr, size, type );
1482
1483 if (process != NtCurrentProcess())
1484 {
1485 apc_call_t call;
1486 apc_result_t result;
1487
1488 call.virtual_free.type = APC_VIRTUAL_FREE;
1489 call.virtual_free.addr = addr;
1490 call.virtual_free.size = size;
1491 call.virtual_free.op_type = type;
1492 status = NTDLL_queue_process_apc( process, &call, &result );
1493 if (status != STATUS_SUCCESS) return status;
1494
1495 if (result.virtual_free.status == STATUS_SUCCESS)
1496 {
1497 *addr_ptr = result.virtual_free.addr;
1498 *size_ptr = result.virtual_free.size;
1499 }
1500 return result.virtual_free.status;
1501 }
1502
1503 /* Fix the parameters */
1504
1505 size = ROUND_SIZE( addr, size );
1506 base = ROUND_ADDR( addr, page_mask );
1507
1508 /* avoid freeing the DOS area when a broken app passes a NULL pointer */
1509 if (!base && !(type & MEM_SYSTEM)) return STATUS_INVALID_PARAMETER;
1510
1511 server_enter_uninterrupted_section( &csVirtual, &sigset );
1512
1513 if (!(view = VIRTUAL_FindView( base )) ||
1514 (base + size > (char *)view->base + view->size) ||
1515 !(view->flags & VFLAG_VALLOC))
1516 {
1517 status = STATUS_INVALID_PARAMETER;
1518 }
1519 else if (type & MEM_SYSTEM)
1520 {
1521 /* return the values that the caller should use to unmap the area */
1522 *addr_ptr = view->base;
1523 if (!wine_mmap_is_in_reserved_area( view->base, view->size )) *size_ptr = view->size;
1524 else *size_ptr = 0; /* make sure we don't munmap anything from a reserved area */
1525 view->flags |= VFLAG_SYSTEM;
1526 delete_view( view );
1527 }
1528 else if (type == MEM_RELEASE)
1529 {
1530 /* Free the pages */
1531
1532 if (size || (base != view->base)) status = STATUS_INVALID_PARAMETER;
1533 else
1534 {
1535 delete_view( view );
1536 *addr_ptr = base;
1537 *size_ptr = size;
1538 }
1539 }
1540 else if (type == MEM_DECOMMIT)
1541 {
1542 status = decommit_pages( view, base - (char *)view->base, size );
1543 if (status == STATUS_SUCCESS)
1544 {
1545 *addr_ptr = base;
1546 *size_ptr = size;
1547 }
1548 }
1549 else
1550 {
1551 WARN("called with wrong free type flags (%08x) !\n", type);
1552 status = STATUS_INVALID_PARAMETER;
1553 }
1554
1555 server_leave_uninterrupted_section( &csVirtual, &sigset );
1556 return status;
1557 }
1558
1559
1560 /***********************************************************************
1561 * NtProtectVirtualMemory (NTDLL.@)
1562 * ZwProtectVirtualMemory (NTDLL.@)
1563 */
1564 NTSTATUS WINAPI NtProtectVirtualMemory( HANDLE process, PVOID *addr_ptr, SIZE_T *size_ptr,
1565 ULONG new_prot, ULONG *old_prot )
1566 {
1567 FILE_VIEW *view;
1568 sigset_t sigset;
1569 NTSTATUS status = STATUS_SUCCESS;
1570 char *base;
1571 UINT i;
1572 BYTE vprot, *p;
1573 ULONG prot;
1574 SIZE_T size = *size_ptr;
1575 LPVOID addr = *addr_ptr;
1576
1577 TRACE("%p %p %08lx %08x\n", process, addr, size, new_prot );
1578
1579 if (process != NtCurrentProcess())
1580 {
1581 apc_call_t call;
1582 apc_result_t result;
1583
1584 call.virtual_protect.type = APC_VIRTUAL_PROTECT;
1585 call.virtual_protect.addr = addr;
1586 call.virtual_protect.size = size;
1587 call.virtual_protect.prot = new_prot;
1588 status = NTDLL_queue_process_apc( process, &call, &result );
1589 if (status != STATUS_SUCCESS) return status;
1590
1591 if (result.virtual_protect.status == STATUS_SUCCESS)
1592 {
1593 *addr_ptr = result.virtual_protect.addr;
1594 *size_ptr = result.virtual_protect.size;
1595 if (old_prot) *old_prot = result.virtual_protect.prot;
1596 }
1597 return result.virtual_protect.status;
1598 }
1599
1600 /* Fix the parameters */
1601
1602 size = ROUND_SIZE( addr, size );
1603 base = ROUND_ADDR( addr, page_mask );
1604
1605 server_enter_uninterrupted_section( &csVirtual, &sigset );
1606
1607 if (!(view = VIRTUAL_FindView( base )) || (base + size > (char *)view->base + view->size))
1608 {
1609 status = STATUS_INVALID_PARAMETER;
1610 }
1611 else
1612 {
1613 /* Make sure all the pages are committed */
1614
1615 p = view->prot + ((base - (char *)view->base) >> page_shift);
1616 prot = VIRTUAL_GetWin32Prot( *p );
1617 for (i = size >> page_shift; i; i--, p++)
1618 {
1619 if (!(*p & VPROT_COMMITTED))
1620 {
1621 status = STATUS_NOT_COMMITTED;
1622 break;
1623 }
1624 }
1625 if (!i)
1626 {
1627 if (old_prot) *old_prot = prot;
1628 vprot = VIRTUAL_GetProt( new_prot ) | VPROT_COMMITTED;
1629 if (!VIRTUAL_SetProt( view, base, size, vprot )) status = STATUS_ACCESS_DENIED;
1630 }
1631 }
1632 server_leave_uninterrupted_section( &csVirtual, &sigset );
1633
1634 if (status == STATUS_SUCCESS)
1635 {
1636 *addr_ptr = base;
1637 *size_ptr = size;
1638 }
1639 return status;
1640 }
1641
1642 #define UNIMPLEMENTED_INFO_CLASS(c) \
1643 case c: \
1644 FIXME("(process=%p,addr=%p) Unimplemented information class: " #c "\n", process, addr); \
1645 return STATUS_INVALID_INFO_CLASS
1646
1647 /***********************************************************************
1648 * NtQueryVirtualMemory (NTDLL.@)
1649 * ZwQueryVirtualMemory (NTDLL.@)
1650 */
1651 NTSTATUS WINAPI NtQueryVirtualMemory( HANDLE process, LPCVOID addr,
1652 MEMORY_INFORMATION_CLASS info_class, PVOID buffer,
1653 SIZE_T len, SIZE_T *res_len )
1654 {
1655 FILE_VIEW *view;
1656 char *base, *alloc_base = 0;
1657 struct list *ptr;
1658 SIZE_T size = 0;
1659 MEMORY_BASIC_INFORMATION *info = buffer;
1660 sigset_t sigset;
1661
1662 if (info_class != MemoryBasicInformation)
1663 {
1664 switch(info_class)
1665 {
1666 UNIMPLEMENTED_INFO_CLASS(MemoryWorkingSetList);
1667 UNIMPLEMENTED_INFO_CLASS(MemorySectionName);
1668 UNIMPLEMENTED_INFO_CLASS(MemoryBasicVlmInformation);
1669
1670 default:
1671 FIXME("(%p,%p,info_class=%d,%p,%ld,%p) Unknown information class\n",
1672 process, addr, info_class, buffer, len, res_len);
1673 return STATUS_INVALID_INFO_CLASS;
1674 }
1675 }
1676 if (ADDRESS_SPACE_LIMIT && addr >= ADDRESS_SPACE_LIMIT)
1677 return STATUS_WORKING_SET_LIMIT_RANGE;
1678
1679 if (process != NtCurrentProcess())
1680 {
1681 NTSTATUS status;
1682 apc_call_t call;
1683 apc_result_t result;
1684
1685 call.virtual_query.type = APC_VIRTUAL_QUERY;
1686 call.virtual_query.addr = addr;
1687 status = NTDLL_queue_process_apc( process, &call, &result );
1688 if (status != STATUS_SUCCESS) return status;
1689
1690 if (result.virtual_query.status == STATUS_SUCCESS)
1691 {
1692 info->BaseAddress = result.virtual_query.base;
1693 info->AllocationBase = result.virtual_query.alloc_base;
1694 info->RegionSize = result.virtual_query.size;
1695 info->State = result.virtual_query.state;
1696 info->Protect = result.virtual_query.prot;
1697 info->AllocationProtect = result.virtual_query.alloc_prot;
1698 info->Type = result.virtual_query.alloc_type;
1699 if (res_len) *res_len = sizeof(*info);
1700 }
1701 return result.virtual_query.status;
1702 }
1703
1704 base = ROUND_ADDR( addr, page_mask );
1705
1706 /* Find the view containing the address */
1707
1708 server_enter_uninterrupted_section( &csVirtual, &sigset );
1709 ptr = list_head( &views_list );
1710 for (;;)
1711 {
1712 if (!ptr)
1713 {
1714 /* make the address space end at the user limit, except if
1715 * the last view was mapped beyond that */
1716 if (alloc_base <= (char *)user_space_limit)
1717 {
1718 if (user_space_limit && base >= (char *)user_space_limit)
1719 {
1720 server_leave_uninterrupted_section( &csVirtual, &sigset );
1721 return STATUS_WORKING_SET_LIMIT_RANGE;
1722 }
1723 size = (char *)user_space_limit - alloc_base;
1724 }
1725 else size = (char *)ADDRESS_SPACE_LIMIT - alloc_base;
1726 view = NULL;
1727 break;
1728 }
1729 view = LIST_ENTRY( ptr, struct file_view, entry );
1730 if ((char *)view->base > base)
1731 {
1732 size = (char *)view->base - alloc_base;
1733 view = NULL;
1734 break;
1735 }
1736 if ((char *)view->base + view->size > base)
1737 {
1738 alloc_base = view->base;
1739 size = view->size;
1740 break;
1741 }
1742 alloc_base = (char *)view->base + view->size;
1743 ptr = list_next( &views_list, ptr );
1744 }
1745
1746 /* Fill the info structure */
1747
1748 if (!view)
1749 {
1750 info->State = MEM_FREE;
1751 info->Protect = PAGE_NOACCESS;
1752 info->AllocationBase = 0;
1753 info->AllocationProtect = 0;
1754 info->Type = 0;
1755 }
1756 else
1757 {
1758 BYTE vprot = view->prot[(base - alloc_base) >> page_shift];
1759 info->State = (vprot & VPROT_COMMITTED) ? MEM_COMMIT : MEM_RESERVE;
1760 info->Protect = VIRTUAL_GetWin32Prot( vprot );
1761 info->AllocationBase = alloc_base;
1762 info->AllocationProtect = VIRTUAL_GetWin32Prot( view->protect );
1763 if (view->protect & VPROT_IMAGE) info->Type = MEM_IMAGE;
1764 else if (view->flags & VFLAG_VALLOC) info->Type = MEM_PRIVATE;
1765 else info->Type = MEM_MAPPED;
1766 for (size = base - alloc_base; size < view->size; size += page_size)
1767 if (view->prot[size >> page_shift] != vprot) break;
1768 }
1769 server_leave_uninterrupted_section( &csVirtual, &sigset );
1770
1771 info->BaseAddress = base;
1772 info->RegionSize = size - (base - alloc_base);
1773 if (res_len) *res_len = sizeof(*info);
1774 return STATUS_SUCCESS;
1775 }
1776
1777
1778 /***********************************************************************
1779 * NtLockVirtualMemory (NTDLL.@)
1780 * ZwLockVirtualMemory (NTDLL.@)
1781 */
1782 NTSTATUS WINAPI NtLockVirtualMemory( HANDLE process, PVOID *addr, SIZE_T *size, ULONG unknown )
1783 {
1784 NTSTATUS status = STATUS_SUCCESS;
1785
1786 if (process != NtCurrentProcess())
1787 {
1788 apc_call_t call;
1789 apc_result_t result;
1790
1791 call.virtual_lock.type = APC_VIRTUAL_LOCK;
1792 call.virtual_lock.addr = *addr;
1793 call.virtual_lock.size = *size;
1794 status = NTDLL_queue_process_apc( process, &call, &result );
1795 if (status != STATUS_SUCCESS) return status;
1796
1797 if (result.virtual_lock.status == STATUS_SUCCESS)
1798 {
1799 *addr = result.virtual_lock.addr;
1800 *size = result.virtual_lock.size;
1801 }
1802 return result.virtual_lock.status;
1803 }
1804
1805 *size = ROUND_SIZE( *addr, *size );
1806 *addr = ROUND_ADDR( *addr, page_mask );
1807
1808 if (mlock( *addr, *size )) status = STATUS_ACCESS_DENIED;
1809 return status;
1810 }
1811
1812
1813 /***********************************************************************
1814 * NtUnlockVirtualMemory (NTDLL.@)
1815 * ZwUnlockVirtualMemory (NTDLL.@)
1816 */
1817 NTSTATUS WINAPI NtUnlockVirtualMemory( HANDLE process, PVOID *addr, SIZE_T *size, ULONG unknown )
1818 {
1819 NTSTATUS status = STATUS_SUCCESS;
1820
1821 if (process != NtCurrentProcess())
1822 {
1823 apc_call_t call;
1824 apc_result_t result;
1825
1826 call.virtual_unlock.type = APC_VIRTUAL_UNLOCK;
1827 call.virtual_unlock.addr = *addr;
1828 call.virtual_unlock.size = *size;
1829 status = NTDLL_queue_process_apc( process, &call, &result );
1830 if (status != STATUS_SUCCESS) return status;
1831
1832 if (result.virtual_unlock.status == STATUS_SUCCESS)
1833 {
1834 *addr = result.virtual_unlock.addr;
1835 *size = result.virtual_unlock.size;
1836 }
1837 return result.virtual_unlock.status;
1838 }
1839
1840 *size = ROUND_SIZE( *addr, *size );
1841 *addr = ROUND_ADDR( *addr, page_mask );
1842
1843 if (munlock( *addr, *size )) status = STATUS_ACCESS_DENIED;
1844 return status;
1845 }
1846
1847
1848 /***********************************************************************
1849 * NtCreateSection (NTDLL.@)
1850 * ZwCreateSection (NTDLL.@)
1851 */
1852 NTSTATUS WINAPI NtCreateSection( HANDLE *handle, ACCESS_MASK access, const OBJECT_ATTRIBUTES *attr,
1853 const LARGE_INTEGER *size, ULONG protect,
1854 ULONG sec_flags, HANDLE file )
1855 {
1856 NTSTATUS ret;
1857 BYTE vprot;
1858 DWORD len = (attr && attr->ObjectName) ? attr->ObjectName->Length : 0;
1859
1860 /* Check parameters */
1861
1862 if (len > MAX_PATH*sizeof(WCHAR)) return STATUS_NAME_TOO_LONG;
1863
1864 vprot = VIRTUAL_GetProt( protect );
1865 if (sec_flags & SEC_RESERVE)
1866 {
1867 if (file) return STATUS_INVALID_PARAMETER;
1868 }
1869 else vprot |= VPROT_COMMITTED;
1870 if (sec_flags & SEC_NOCACHE) vprot |= VPROT_NOCACHE;
1871 if (sec_flags & SEC_IMAGE) vprot |= VPROT_IMAGE;
1872
1873 /* Create the server object */
1874
1875 SERVER_START_REQ( create_mapping )
1876 {
1877 req->access = access;
1878 req->attributes = (attr) ? attr->Attributes : 0;
1879 req->rootdir = attr ? attr->RootDirectory : 0;
1880 req->file_handle = file;
1881 req->size_high = size ? size->u.HighPart : 0;
1882 req->size_low = size ? size->u.LowPart : 0;
1883 req->protect = vprot;
1884 if (len) wine_server_add_data( req, attr->ObjectName->Buffer, len );
1885 ret = wine_server_call( req );
1886 *handle = reply->handle;
1887 }
1888 SERVER_END_REQ;
1889 return ret;
1890 }
1891
1892
1893 /***********************************************************************
1894 * NtOpenSection (NTDLL.@)
1895 * ZwOpenSection (NTDLL.@)
1896 */
1897 NTSTATUS WINAPI NtOpenSection( HANDLE *handle, ACCESS_MASK access, const OBJECT_ATTRIBUTES *attr )
1898 {
1899 NTSTATUS ret;
1900 DWORD len = attr->ObjectName->Length;
1901
1902 if (len > MAX_PATH*sizeof(WCHAR)) return STATUS_NAME_TOO_LONG;
1903
1904 SERVER_START_REQ( open_mapping )
1905 {
1906 req->access = access;
1907 req->attributes = (attr) ? attr->Attributes : 0;
1908 req->rootdir = attr ? attr->RootDirectory : 0;
1909 wine_server_add_data( req, attr->ObjectName->Buffer, len );
1910 if (!(ret = wine_server_call( req ))) *handle = reply->handle;
1911 }
1912 SERVER_END_REQ;
1913 return ret;
1914 }
1915
1916
1917 /***********************************************************************
1918 * NtMapViewOfSection (NTDLL.@)
1919 * ZwMapViewOfSection (NTDLL.@)
1920 */
1921 NTSTATUS WINAPI NtMapViewOfSection( HANDLE handle, HANDLE process, PVOID *addr_ptr, ULONG zero_bits,
1922 SIZE_T commit_size, const LARGE_INTEGER *offset_ptr, SIZE_T *size_ptr,
1923 SECTION_INHERIT inherit, ULONG alloc_type, ULONG protect )
1924 {
1925 NTSTATUS res;
1926 SIZE_T size = 0;
1927 SIZE_T mask = get_mask( zero_bits );
1928 int unix_handle = -1, needs_close;
1929 int prot;
1930 void *base;
1931 struct file_view *view;
1932 DWORD size_low, size_high, header_size, shared_size;
1933 HANDLE dup_mapping, shared_file;
1934 LARGE_INTEGER offset;
1935 sigset_t sigset;
1936
1937 offset.QuadPart = offset_ptr ? offset_ptr->QuadPart : 0;
1938
1939 TRACE("handle=%p process=%p addr=%p off=%x%08x size=%lx access=%x\n",
1940 handle, process, *addr_ptr, offset.u.HighPart, offset.u.LowPart, size, protect );
1941
1942 /* Check parameters */
1943
1944 if ((offset.u.LowPart & mask) || (*addr_ptr && ((UINT_PTR)*addr_ptr & mask)))
1945 return STATUS_INVALID_PARAMETER;
1946
1947 if (process != NtCurrentProcess())
1948 {
1949 apc_call_t call;
1950 apc_result_t result;
1951
1952 call.map_view.type = APC_MAP_VIEW;
1953 call.map_view.handle = handle;
1954 call.map_view.addr = *addr_ptr;
1955 call.map_view.size = *size_ptr;
1956 call.map_view.offset_low = offset.u.LowPart;
1957 call.map_view.offset_high = offset.u.HighPart;
1958 call.map_view.zero_bits = zero_bits;
1959 call.map_view.alloc_type = alloc_type;
1960 call.map_view.prot = protect;
1961 res = NTDLL_queue_process_apc( process, &call, &result );
1962 if (res != STATUS_SUCCESS) return res;
1963
1964 if (result.map_view.status == STATUS_SUCCESS)
1965 {
1966 *addr_ptr = result.map_view.addr;
1967 *size_ptr = result.map_view.size;
1968 }
1969 return result.map_view.status;
1970 }
1971
1972 SERVER_START_REQ( get_mapping_info )
1973 {
1974 req->handle = handle;
1975 res = wine_server_call( req );
1976 prot = reply->protect;
1977 base = reply->base;
1978 size_low = reply->size_low;
1979 size_high = reply->size_high;
1980 header_size = reply->header_size;
1981 dup_mapping = reply->mapping;
1982 shared_file = reply->shared_file;
1983 shared_size = reply->shared_size;
1984 }
1985 SERVER_END_REQ;
1986 if (res) return res;
1987
1988 size = ((ULONGLONG)size_high << 32) | size_low;
1989 if (sizeof(size) == sizeof(size_low) && size_high)
1990 ERR( "Sizes larger than 4Gb (%x%08x) not supported on this platform\n", size_high, size_low );
1991
1992 if ((res = server_get_unix_fd( handle, 0, &unix_handle, &needs_close, NULL, NULL ))) goto done;
1993
1994 if (prot & VPROT_IMAGE)
1995 {
1996 if (shared_file)
1997 {
1998 int shared_fd, shared_needs_close;
1999
2000 if ((res = server_get_unix_fd( shared_file, FILE_READ_DATA|FILE_WRITE_DATA,
2001 &shared_fd, &shared_needs_close, NULL, NULL ))) goto done;
2002 res = map_image( handle, unix_handle, base, size, mask, header_size,
2003 shared_fd, dup_mapping, addr_ptr );
2004 if (shared_needs_close) close( shared_fd );
2005 NtClose( shared_file );
2006 }
2007 else
2008 {
2009 res = map_image( handle, unix_handle, base, size, mask, header_size,
2010 -1, dup_mapping, addr_ptr );
2011 }
2012 if (needs_close) close( unix_handle );
2013 if (!res) *size_ptr = size;
2014 return res;
2015 }
2016
2017 if ((offset.QuadPart >= size) || (*size_ptr > size - offset.QuadPart))
2018 {
2019 res = STATUS_INVALID_PARAMETER;
2020 goto done;
2021 }
2022 if (*size_ptr) size = ROUND_SIZE( offset.u.LowPart, *size_ptr );
2023 else size = size - offset.QuadPart;
2024
2025 switch(protect)
2026 {
2027 case PAGE_NOACCESS:
2028 break;
2029 case PAGE_READWRITE:
2030 case PAGE_EXECUTE_READWRITE:
2031 if (!(prot & VPROT_WRITE))
2032 {
2033 res = STATUS_INVALID_PARAMETER;
2034 goto done;
2035 }
2036 /* fall through */
2037 case PAGE_READONLY:
2038 case PAGE_WRITECOPY:
2039 case PAGE_EXECUTE:
2040 case PAGE_EXECUTE_READ:
2041 case PAGE_EXECUTE_WRITECOPY:
2042 if (prot & VPROT_READ) break;
2043 /* fall through */
2044 default:
2045 res = STATUS_INVALID_PARAMETER;
2046 goto done;
2047 }
2048
2049 /* FIXME: If a mapping is created with SEC_RESERVE and a process,
2050 * which has a view of this mapping commits some pages, they will
2051 * appear committed in all other processes, which have the same
2052 * view created. Since we don't support this yet, we create the
2053 * whole mapping committed.
2054 */
2055 prot |= VPROT_COMMITTED;
2056
2057 /* Reserve a properly aligned area */
2058
2059 server_enter_uninterrupted_section( &csVirtual, &sigset );
2060
2061 res = map_view( &view, *addr_ptr, size, mask, FALSE, prot );
2062 if (res)
2063 {
2064 server_leave_uninterrupted_section( &csVirtual, &sigset );
2065 goto done;
2066 }
2067
2068 /* Map the file */
2069
2070 TRACE("handle=%p size=%lx offset=%x%08x\n",
2071 handle, size, offset.u.HighPart, offset.u.LowPart );
2072
2073 res = map_file_into_view( view, unix_handle, 0, size, offset.QuadPart, prot, !dup_mapping );
2074 if (res == STATUS_SUCCESS)
2075 {
2076 *addr_ptr = view->base;
2077 *size_ptr = size;
2078 view->mapping = dup_mapping;
2079 dup_mapping = 0; /* don't close it */
2080 }
2081 else
2082 {
2083 ERR( "map_file_into_view %p %lx %x%08x failed\n",
2084 view->base, size, offset.u.HighPart, offset.u.LowPart );
2085 delete_view( view );
2086 }
2087
2088 server_leave_uninterrupted_section( &csVirtual, &sigset );
2089
2090 done:
2091 if (dup_mapping) NtClose( dup_mapping );
2092 if (needs_close) close( unix_handle );
2093 return res;
2094 }
2095
2096
2097 /***********************************************************************
2098 * NtUnmapViewOfSection (NTDLL.@)
2099 * ZwUnmapViewOfSection (NTDLL.@)
2100 */
2101 NTSTATUS WINAPI NtUnmapViewOfSection( HANDLE process, PVOID addr )
2102 {
2103 FILE_VIEW *view;
2104 NTSTATUS status = STATUS_INVALID_PARAMETER;
2105 sigset_t sigset;
2106 void *base = ROUND_ADDR( addr, page_mask );
2107
2108 if (process != NtCurrentProcess())
2109 {
2110 apc_call_t call;
2111 apc_result_t result;
2112
2113 call.unmap_view.type = APC_UNMAP_VIEW;
2114 call.unmap_view.addr = addr;
2115 status = NTDLL_queue_process_apc( process, &call, &result );
2116 if (status == STATUS_SUCCESS) status = result.unmap_view.status;
2117 return status;
2118 }
2119
2120 server_enter_uninterrupted_section( &csVirtual, &sigset );
2121 if ((view = VIRTUAL_FindView( base )) && (base == view->base))
2122 {
2123 delete_view( view );
2124 status = STATUS_SUCCESS;
2125 }
2126 server_leave_uninterrupted_section( &csVirtual, &sigset );
2127 return status;
2128 }
2129
2130
2131 /***********************************************************************
2132 * NtFlushVirtualMemory (NTDLL.@)
2133 * ZwFlushVirtualMemory (NTDLL.@)
2134 */
2135 NTSTATUS WINAPI NtFlushVirtualMemory( HANDLE process, LPCVOID *addr_ptr,
2136 SIZE_T *size_ptr, ULONG unknown )
2137 {
2138 FILE_VIEW *view;
2139 NTSTATUS status = STATUS_SUCCESS;
2140 sigset_t sigset;
2141 void *addr = ROUND_ADDR( *addr_ptr, page_mask );
2142
2143 if (process != NtCurrentProcess())
2144 {
2145 apc_call_t call;
2146 apc_result_t result;
2147
2148 call.virtual_flush.type = APC_VIRTUAL_FLUSH;
2149 call.virtual_flush.addr = addr;
2150 call.virtual_flush.size = *size_ptr;
2151 status = NTDLL_queue_process_apc( process, &call, &result );
2152 if (status != STATUS_SUCCESS) return status;
2153
2154 if (result.virtual_flush.status == STATUS_SUCCESS)
2155 {
2156 *addr_ptr = result.virtual_flush.addr;
2157 *size_ptr = result.virtual_flush.size;
2158 }
2159 return result.virtual_flush.status;
2160 }
2161
2162 server_enter_uninterrupted_section( &csVirtual, &sigset );
2163 if (!(view = VIRTUAL_FindView( addr ))) status = STATUS_INVALID_PARAMETER;
2164 else
2165 {
2166 if (!*size_ptr) *size_ptr = view->size;
2167 *addr_ptr = addr;
2168 if (msync( addr, *size_ptr, MS_SYNC )) status = STATUS_NOT_MAPPED_DATA;
2169 }
2170 server_leave_uninterrupted_section( &csVirtual, &sigset );
2171 return status;
2172 }
2173
2174
2175 /***********************************************************************
2176 * NtReadVirtualMemory (NTDLL.@)
2177 * ZwReadVirtualMemory (NTDLL.@)
2178 */
2179 NTSTATUS WINAPI NtReadVirtualMemory( HANDLE process, const void *addr, void *buffer,
2180 SIZE_T size, SIZE_T *bytes_read )
2181 {
2182 NTSTATUS status;
2183
2184 SERVER_START_REQ( read_process_memory )
2185 {
2186 req->handle = process;
2187 req->addr = (void *)addr;
2188 wine_server_set_reply( req, buffer, size );
2189 if ((status = wine_server_call( req ))) size = 0;
2190 }
2191 SERVER_END_REQ;
2192 if (bytes_read) *bytes_read = size;
2193 return status;
2194 }
2195
2196
2197 /***********************************************************************
2198 * NtWriteVirtualMemory (NTDLL.@)
2199 * ZwWriteVirtualMemory (NTDLL.@)
2200 */
2201 NTSTATUS WINAPI NtWriteVirtualMemory( HANDLE process, void *addr, const void *buffer,
2202 SIZE_T size, SIZE_T *bytes_written )
2203 {
2204 NTSTATUS status;
2205
2206 SERVER_START_REQ( write_process_memory )
2207 {
2208 req->handle = process;
2209 req->addr = addr;
2210 wine_server_add_data( req, buffer, size );
2211 if ((status = wine_server_call( req ))) size = 0;
2212 }
2213 SERVER_END_REQ;
2214 if (bytes_written) *bytes_written = size;
2215 return status;
2216 }