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windowscodecs: Add support for converting to 32bppPBGRA.
[wine.git] / dlls / ntdll / virtual.c
blobd88b734d942cb7d1c858714b3a62b2df3d4ea314
1 /*
2 * Win32 virtual memory functions
3 *
4 * Copyright 1997, 2002 Alexandre Julliard
5 *
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
10 *
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
15 *
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
19 */
20
21 #include "config.h"
22 #include "wine/port.h"
23
24 #include <assert.h>
25 #include <errno.h>
26 #ifdef HAVE_SYS_ERRNO_H
27 #include <sys/errno.h>
28 #endif
29 #include <fcntl.h>
30 #ifdef HAVE_UNISTD_H
31 # include <unistd.h>
32 #endif
33 #include <stdarg.h>
34 #include <stdlib.h>
35 #include <stdio.h>
36 #include <string.h>
37 #include <sys/types.h>
38 #ifdef HAVE_SYS_STAT_H
39 # include <sys/stat.h>
40 #endif
41 #ifdef HAVE_SYS_MMAN_H
42 # include <sys/mman.h>
43 #endif
44 #ifdef HAVE_VALGRIND_VALGRIND_H
45 # include <valgrind/valgrind.h>
46 #endif
47
48 #define NONAMELESSUNION
49 #define NONAMELESSSTRUCT
50 #include "ntstatus.h"
51 #define WIN32_NO_STATUS
52 #include "windef.h"
53 #include "winternl.h"
54 #include "wine/library.h"
55 #include "wine/server.h"
56 #include "wine/exception.h"
57 #include "wine/list.h"
58 #include "wine/debug.h"
59 #include "ntdll_misc.h"
60
61 WINE_DEFAULT_DEBUG_CHANNEL(virtual);
62 WINE_DECLARE_DEBUG_CHANNEL(module);
63
64 #ifndef MS_SYNC
65 #define MS_SYNC 0
66 #endif
67
68 #ifndef MAP_NORESERVE
69 #define MAP_NORESERVE 0
70 #endif
71
72 /* File view */
73 struct file_view
74 {
75 struct list entry; /* Entry in global view list */
76 void *base; /* Base address */
77 size_t size; /* Size in bytes */
78 HANDLE mapping; /* Handle to the file mapping */
79 unsigned int protect; /* Protection for all pages at allocation time */
80 BYTE prot[1]; /* Protection byte for each page */
81 };
82
83
84 /* Conversion from VPROT_* to Win32 flags */
85 static const BYTE VIRTUAL_Win32Flags[16] =
86 {
87 PAGE_NOACCESS, /* 0 */
88 PAGE_READONLY, /* READ */
89 PAGE_READWRITE, /* WRITE */
90 PAGE_READWRITE, /* READ | WRITE */
91 PAGE_EXECUTE, /* EXEC */
92 PAGE_EXECUTE_READ, /* READ | EXEC */
93 PAGE_EXECUTE_READWRITE, /* WRITE | EXEC */
94 PAGE_EXECUTE_READWRITE, /* READ | WRITE | EXEC */
95 PAGE_WRITECOPY, /* WRITECOPY */
96 PAGE_WRITECOPY, /* READ | WRITECOPY */
97 PAGE_WRITECOPY, /* WRITE | WRITECOPY */
98 PAGE_WRITECOPY, /* READ | WRITE | WRITECOPY */
99 PAGE_EXECUTE_WRITECOPY, /* EXEC | WRITECOPY */
100 PAGE_EXECUTE_WRITECOPY, /* READ | EXEC | WRITECOPY */
101 PAGE_EXECUTE_WRITECOPY, /* WRITE | EXEC | WRITECOPY */
102 PAGE_EXECUTE_WRITECOPY /* READ | WRITE | EXEC | WRITECOPY */
103 };
104
105 static struct list views_list = LIST_INIT(views_list);
106
107 static RTL_CRITICAL_SECTION csVirtual;
108 static RTL_CRITICAL_SECTION_DEBUG critsect_debug =
109 {
110 0, 0, &csVirtual,
111 { &critsect_debug.ProcessLocksList, &critsect_debug.ProcessLocksList },
112 0, 0, { (DWORD_PTR)(__FILE__ ": csVirtual") }
113 };
114 static RTL_CRITICAL_SECTION csVirtual = { &critsect_debug, -1, 0, 0, 0, 0 };
115
116 #ifdef __i386__
117 /* These are always the same on an i386, and it will be faster this way */
118 # define page_mask 0xfff
119 # define page_shift 12
120 # define page_size 0x1000
121 /* Note: these are Windows limits, you cannot change them. */
122 static void *address_space_limit = (void *)0xc0000000; /* top of the total available address space */
123 static void *user_space_limit = (void *)0x7fff0000; /* top of the user address space */
124 static void *working_set_limit = (void *)0x7fff0000; /* top of the current working set */
125 static void *address_space_start = (void *)0x110000; /* keep DOS area clear */
126 #elif defined(__x86_64__)
127 # define page_mask 0xfff
128 # define page_shift 12
129 # define page_size 0x1000
130 static void *address_space_limit = (void *)0x7fffffff0000;
131 static void *user_space_limit = (void *)0x7fffffff0000;
132 static void *working_set_limit = (void *)0x7fffffff0000;
133 static void *address_space_start = (void *)0x10000;
134 #else
135 static UINT page_shift;
136 static UINT_PTR page_size;
137 static UINT_PTR page_mask;
138 static void *address_space_limit;
139 static void *user_space_limit;
140 static void *working_set_limit;
141 static void *address_space_start = (void *)0x10000;
142 #endif /* __i386__ */
143 static const int is_win64 = (sizeof(void *) > sizeof(int));
144
145 #define ROUND_ADDR(addr,mask) \
146 ((void *)((UINT_PTR)(addr) & ~(UINT_PTR)(mask)))
147
148 #define ROUND_SIZE(addr,size) \
149 (((SIZE_T)(size) + ((UINT_PTR)(addr) & page_mask) + page_mask) & ~page_mask)
150
151 #define VIRTUAL_DEBUG_DUMP_VIEW(view) \
152 do { if (TRACE_ON(virtual)) VIRTUAL_DumpView(view); } while (0)
153
154 #define VIRTUAL_HEAP_SIZE (4*1024*1024)
155
156 static HANDLE virtual_heap;
157 static void *preload_reserve_start;
158 static void *preload_reserve_end;
159 static int use_locks;
160 static int force_exec_prot; /* whether to force PROT_EXEC on all PROT_READ mmaps */
161
162
163 /***********************************************************************
164 * VIRTUAL_GetProtStr
165 */
166 static const char *VIRTUAL_GetProtStr( BYTE prot )
167 {
168 static char buffer[6];
169 buffer[0] = (prot & VPROT_COMMITTED) ? 'c' : '-';
170 buffer[1] = (prot & VPROT_GUARD) ? 'g' : ((prot & VPROT_WRITEWATCH) ? 'H' : '-');
171 buffer[2] = (prot & VPROT_READ) ? 'r' : '-';
172 buffer[3] = (prot & VPROT_WRITECOPY) ? 'W' : ((prot & VPROT_WRITE) ? 'w' : '-');
173 buffer[4] = (prot & VPROT_EXEC) ? 'x' : '-';
174 buffer[5] = 0;
175 return buffer;
176 }
177
178
179 /***********************************************************************
180 * VIRTUAL_GetUnixProt
181 *
182 * Convert page protections to protection for mmap/mprotect.
183 */
184 static int VIRTUAL_GetUnixProt( BYTE vprot )
185 {
186 int prot = 0;
187 if ((vprot & VPROT_COMMITTED) && !(vprot & VPROT_GUARD))
188 {
189 if (vprot & VPROT_READ) prot |= PROT_READ;
190 if (vprot & VPROT_WRITE) prot |= PROT_WRITE;
191 if (vprot & VPROT_WRITECOPY) prot |= PROT_WRITE;
192 if (vprot & VPROT_EXEC) prot |= PROT_EXEC;
193 if (vprot & VPROT_WRITEWATCH) prot &= ~PROT_WRITE;
194 }
195 if (!prot) prot = PROT_NONE;
196 return prot;
197 }
198
199
200 /***********************************************************************
201 * VIRTUAL_DumpView
202 */
203 static void VIRTUAL_DumpView( struct file_view *view )
204 {
205 UINT i, count;
206 char *addr = view->base;
207 BYTE prot = view->prot[0];
208
209 TRACE( "View: %p - %p", addr, addr + view->size - 1 );
210 if (view->protect & VPROT_SYSTEM)
211 TRACE( " (system)\n" );
212 else if (view->protect & VPROT_VALLOC)
213 TRACE( " (valloc)\n" );
214 else if (view->mapping)
215 TRACE( " %p\n", view->mapping );
216 else
217 TRACE( " (anonymous)\n");
218
219 for (count = i = 1; i < view->size >> page_shift; i++, count++)
220 {
221 if (view->prot[i] == prot) continue;
222 TRACE( " %p - %p %s\n",
223 addr, addr + (count << page_shift) - 1, VIRTUAL_GetProtStr(prot) );
224 addr += (count << page_shift);
225 prot = view->prot[i];
226 count = 0;
227 }
228 if (count)
229 TRACE( " %p - %p %s\n",
230 addr, addr + (count << page_shift) - 1, VIRTUAL_GetProtStr(prot) );
231 }
232
233
234 /***********************************************************************
235 * VIRTUAL_Dump
236 */
237 #ifdef WINE_VM_DEBUG
238 static void VIRTUAL_Dump(void)
239 {
240 sigset_t sigset;
241 struct file_view *view;
242
243 TRACE( "Dump of all virtual memory views:\n" );
244 server_enter_uninterrupted_section( &csVirtual, &sigset );
245 LIST_FOR_EACH_ENTRY( view, &views_list, struct file_view, entry )
246 {
247 VIRTUAL_DumpView( view );
248 }
249 server_leave_uninterrupted_section( &csVirtual, &sigset );
250 }
251 #endif
252
253
254 /***********************************************************************
255 * VIRTUAL_FindView
256 *
257 * Find the view containing a given address. The csVirtual section must be held by caller.
258 *
259 * PARAMS
260 * addr [I] Address
261 *
262 * RETURNS
263 * View: Success
264 * NULL: Failure
265 */
266 static struct file_view *VIRTUAL_FindView( const void *addr, size_t size )
267 {
268 struct file_view *view;
269
270 LIST_FOR_EACH_ENTRY( view, &views_list, struct file_view, entry )
271 {
272 if (view->base > addr) break; /* no matching view */
273 if ((const char *)view->base + view->size <= (const char *)addr) continue;
274 if ((const char *)view->base + view->size < (const char *)addr + size) break; /* size too large */
275 if ((const char *)addr + size < (const char *)addr) break; /* overflow */
276 return view;
277 }
278 return NULL;
279 }
280
281
282 /***********************************************************************
283 * get_mask
284 */
285 static inline UINT_PTR get_mask( ULONG zero_bits )
286 {
287 if (!zero_bits) return 0xffff; /* allocations are aligned to 64K by default */
288 if (zero_bits < page_shift) zero_bits = page_shift;
289 return (1 << zero_bits) - 1;
290 }
291
292
293 /***********************************************************************
294 * find_view_range
295 *
296 * Find the first view overlapping at least part of the specified range.
297 * The csVirtual section must be held by caller.
298 */
299 static struct file_view *find_view_range( const void *addr, size_t size )
300 {
301 struct file_view *view;
302
303 LIST_FOR_EACH_ENTRY( view, &views_list, struct file_view, entry )
304 {
305 if ((const char *)view->base >= (const char *)addr + size) break;
306 if ((const char *)view->base + view->size > (const char *)addr) return view;
307 }
308 return NULL;
309 }
310
311
312 /***********************************************************************
313 * find_free_area
314 *
315 * Find a free area between views inside the specified range.
316 * The csVirtual section must be held by caller.
317 */
318 static void *find_free_area( void *base, void *end, size_t size, size_t mask, int top_down )
319 {
320 struct list *ptr;
321 void *start;
322
323 if (top_down)
324 {
325 start = ROUND_ADDR( (char *)end - size, mask );
326 if (start >= end || start < base) return NULL;
327
328 for (ptr = views_list.prev; ptr != &views_list; ptr = ptr->prev)
329 {
330 struct file_view *view = LIST_ENTRY( ptr, struct file_view, entry );
331
332 if ((char *)view->base + view->size <= (char *)start) break;
333 if ((char *)view->base >= (char *)start + size) continue;
334 start = ROUND_ADDR( (char *)view->base - size, mask );
335 /* stop if remaining space is not large enough */
336 if (!start || start >= end || start < base) return NULL;
337 }
338 }
339 else
340 {
341 start = ROUND_ADDR( (char *)base + mask, mask );
342 if (start >= end || (char *)end - (char *)start < size) return NULL;
343
344 for (ptr = views_list.next; ptr != &views_list; ptr = ptr->next)
345 {
346 struct file_view *view = LIST_ENTRY( ptr, struct file_view, entry );
347
348 if ((char *)view->base >= (char *)start + size) break;
349 if ((char *)view->base + view->size <= (char *)start) continue;
350 start = ROUND_ADDR( (char *)view->base + view->size + mask, mask );
351 /* stop if remaining space is not large enough */
352 if (!start || start >= end || (char *)end - (char *)start < size) return NULL;
353 }
354 }
355 return start;
356 }
357
358
359 /***********************************************************************
360 * add_reserved_area
361 *
362 * Add a reserved area to the list maintained by libwine.
363 * The csVirtual section must be held by caller.
364 */
365 static void add_reserved_area( void *addr, size_t size )
366 {
367 TRACE( "adding %p-%p\n", addr, (char *)addr + size );
368
369 if (addr < user_space_limit)
370 {
371 /* unmap the part of the area that is below the limit */
372 assert( (char *)addr + size > (char *)user_space_limit );
373 munmap( addr, (char *)user_space_limit - (char *)addr );
374 size -= (char *)user_space_limit - (char *)addr;
375 addr = user_space_limit;
376 }
377 /* blow away existing mappings */
378 wine_anon_mmap( addr, size, PROT_NONE, MAP_NORESERVE | MAP_FIXED );
379 wine_mmap_add_reserved_area( addr, size );
380 }
381
382
383 /***********************************************************************
384 * remove_reserved_area
385 *
386 * Remove a reserved area from the list maintained by libwine.
387 * The csVirtual section must be held by caller.
388 */
389 static void remove_reserved_area( void *addr, size_t size )
390 {
391 struct file_view *view;
392
393 TRACE( "removing %p-%p\n", addr, (char *)addr + size );
394 wine_mmap_remove_reserved_area( addr, size, 0 );
395
396 /* unmap areas not covered by an existing view */
397 LIST_FOR_EACH_ENTRY( view, &views_list, struct file_view, entry )
398 {
399 if ((char *)view->base >= (char *)addr + size)
400 {
401 munmap( addr, size );
402 break;
403 }
404 if ((char *)view->base + view->size <= (char *)addr) continue;
405 if (view->base > addr) munmap( addr, (char *)view->base - (char *)addr );
406 if ((char *)view->base + view->size > (char *)addr + size) break;
407 size = (char *)addr + size - ((char *)view->base + view->size);
408 addr = (char *)view->base + view->size;
409 }
410 }
411
412
413 /***********************************************************************
414 * is_beyond_limit
415 *
416 * Check if an address range goes beyond a given limit.
417 */
418 static inline int is_beyond_limit( const void *addr, size_t size, const void *limit )
419 {
420 return (addr >= limit || (const char *)addr + size > (const char *)limit);
421 }
422
423
424 /***********************************************************************
425 * unmap_area
426 *
427 * Unmap an area, or simply replace it by an empty mapping if it is
428 * in a reserved area. The csVirtual section must be held by caller.
429 */
430 static inline void unmap_area( void *addr, size_t size )
431 {
432 if (wine_mmap_is_in_reserved_area( addr, size ))
433 wine_anon_mmap( addr, size, PROT_NONE, MAP_NORESERVE | MAP_FIXED );
434 else if (is_beyond_limit( addr, size, user_space_limit ))
435 add_reserved_area( addr, size );
436 else
437 munmap( addr, size );
438 }
439
440
441 /***********************************************************************
442 * delete_view
443 *
444 * Deletes a view. The csVirtual section must be held by caller.
445 */
446 static void delete_view( struct file_view *view ) /* [in] View */
447 {
448 if (!(view->protect & VPROT_SYSTEM)) unmap_area( view->base, view->size );
449 list_remove( &view->entry );
450 if (view->mapping) close_handle( view->mapping );
451 RtlFreeHeap( virtual_heap, 0, view );
452 }
453
454
455 /***********************************************************************
456 * create_view
457 *
458 * Create a view. The csVirtual section must be held by caller.
459 */
460 static NTSTATUS create_view( struct file_view **view_ret, void *base, size_t size, unsigned int vprot )
461 {
462 struct file_view *view;
463 struct list *ptr;
464 int unix_prot = VIRTUAL_GetUnixProt( vprot );
465
466 assert( !((UINT_PTR)base & page_mask) );
467 assert( !(size & page_mask) );
468
469 /* Create the view structure */
470
471 if (!(view = RtlAllocateHeap( virtual_heap, 0, sizeof(*view) + (size >> page_shift) - 1 )))
472 {
473 FIXME( "out of memory in virtual heap for %p-%p\n", base, (char *)base + size );
474 return STATUS_NO_MEMORY;
475 }
476
477 view->base = base;
478 view->size = size;
479 view->mapping = 0;
480 view->protect = vprot;
481 memset( view->prot, vprot, size >> page_shift );
482
483 /* Insert it in the linked list */
484
485 LIST_FOR_EACH( ptr, &views_list )
486 {
487 struct file_view *next = LIST_ENTRY( ptr, struct file_view, entry );
488 if (next->base > base) break;
489 }
490 list_add_before( ptr, &view->entry );
491
492 /* Check for overlapping views. This can happen if the previous view
493 * was a system view that got unmapped behind our back. In that case
494 * we recover by simply deleting it. */
495
496 if ((ptr = list_prev( &views_list, &view->entry )) != NULL)
497 {
498 struct file_view *prev = LIST_ENTRY( ptr, struct file_view, entry );
499 if ((char *)prev->base + prev->size > (char *)base)
500 {
501 TRACE( "overlapping prev view %p-%p for %p-%p\n",
502 prev->base, (char *)prev->base + prev->size,
503 base, (char *)base + view->size );
504 assert( prev->protect & VPROT_SYSTEM );
505 delete_view( prev );
506 }
507 }
508 if ((ptr = list_next( &views_list, &view->entry )) != NULL)
509 {
510 struct file_view *next = LIST_ENTRY( ptr, struct file_view, entry );
511 if ((char *)base + view->size > (char *)next->base)
512 {
513 TRACE( "overlapping next view %p-%p for %p-%p\n",
514 next->base, (char *)next->base + next->size,
515 base, (char *)base + view->size );
516 assert( next->protect & VPROT_SYSTEM );
517 delete_view( next );
518 }
519 }
520
521 *view_ret = view;
522 VIRTUAL_DEBUG_DUMP_VIEW( view );
523
524 if (force_exec_prot && !(vprot & VPROT_NOEXEC) && (unix_prot & PROT_READ) && !(unix_prot & PROT_EXEC))
525 {
526 TRACE( "forcing exec permission on %p-%p\n", base, (char *)base + size - 1 );
527 mprotect( base, size, unix_prot | PROT_EXEC );
528 }
529 return STATUS_SUCCESS;
530 }
531
532
533 /***********************************************************************
534 * VIRTUAL_GetWin32Prot
535 *
536 * Convert page protections to Win32 flags.
537 */
538 static DWORD VIRTUAL_GetWin32Prot( BYTE vprot )
539 {
540 DWORD ret = VIRTUAL_Win32Flags[vprot & 0x0f];
541 if (vprot & VPROT_NOCACHE) ret |= PAGE_NOCACHE;
542 if (vprot & VPROT_GUARD) ret |= PAGE_GUARD;
543 return ret;
544 }
545
546
547 /***********************************************************************
548 * get_vprot_flags
549 *
550 * Build page protections from Win32 flags.
551 *
552 * PARAMS
553 * protect [I] Win32 protection flags
554 *
555 * RETURNS
556 * Value of page protection flags
557 */
558 static NTSTATUS get_vprot_flags( DWORD protect, unsigned int *vprot )
559 {
560 switch(protect & 0xff)
561 {
562 case PAGE_READONLY:
563 *vprot = VPROT_READ;
564 break;
565 case PAGE_READWRITE:
566 *vprot = VPROT_READ | VPROT_WRITE;
567 break;
568 case PAGE_WRITECOPY:
569 *vprot = VPROT_READ | VPROT_WRITECOPY;
570 break;
571 case PAGE_EXECUTE:
572 *vprot = VPROT_EXEC;
573 break;
574 case PAGE_EXECUTE_READ:
575 *vprot = VPROT_EXEC | VPROT_READ;
576 break;
577 case PAGE_EXECUTE_READWRITE:
578 *vprot = VPROT_EXEC | VPROT_READ | VPROT_WRITE;
579 break;
580 case PAGE_EXECUTE_WRITECOPY:
581 *vprot = VPROT_EXEC | VPROT_READ | VPROT_WRITECOPY;
582 break;
583 case PAGE_NOACCESS:
584 *vprot = 0;
585 break;
586 default:
587 return STATUS_INVALID_PARAMETER;
588 }
589 if (protect & PAGE_GUARD) *vprot |= VPROT_GUARD;
590 if (protect & PAGE_NOCACHE) *vprot |= VPROT_NOCACHE;
591 return STATUS_SUCCESS;
592 }
593
594
595 /***********************************************************************
596 * VIRTUAL_SetProt
597 *
598 * Change the protection of a range of pages.
599 *
600 * RETURNS
601 * TRUE: Success
602 * FALSE: Failure
603 */
604 static BOOL VIRTUAL_SetProt( struct file_view *view, /* [in] Pointer to view */
605 void *base, /* [in] Starting address */
606 size_t size, /* [in] Size in bytes */
607 BYTE vprot ) /* [in] Protections to use */
608 {
609 int unix_prot = VIRTUAL_GetUnixProt(vprot);
610 BYTE *p = view->prot + (((char *)base - (char *)view->base) >> page_shift);
611
612 TRACE("%p-%p %s\n",
613 base, (char *)base + size - 1, VIRTUAL_GetProtStr( vprot ) );
614
615 if (view->protect & VPROT_WRITEWATCH)
616 {
617 /* each page may need different protections depending on write watch flag */
618 UINT i, count;
619 char *addr = base;
620 int prot;
621
622 p[0] = vprot | (p[0] & VPROT_WRITEWATCH);
623 unix_prot = VIRTUAL_GetUnixProt( p[0] );
624 for (count = i = 1; i < size >> page_shift; i++, count++)
625 {
626 p[i] = vprot | (p[i] & VPROT_WRITEWATCH);
627 prot = VIRTUAL_GetUnixProt( p[i] );
628 if (prot == unix_prot) continue;
629 mprotect( addr, count << page_shift, unix_prot );
630 addr += count << page_shift;
631 unix_prot = prot;
632 count = 0;
633 }
634 if (count) mprotect( addr, count << page_shift, unix_prot );
635 VIRTUAL_DEBUG_DUMP_VIEW( view );
636 return TRUE;
637 }
638
639 /* if setting stack guard pages, store the permissions first, as the guard may be
640 * triggered at any point after mprotect and change the permissions again */
641 if ((vprot & VPROT_GUARD) &&
642 (base >= NtCurrentTeb()->DeallocationStack) &&
643 (base < NtCurrentTeb()->Tib.StackBase))
644 {
645 memset( p, vprot, size >> page_shift );
646 mprotect( base, size, unix_prot );
647 VIRTUAL_DEBUG_DUMP_VIEW( view );
648 return TRUE;
649 }
650
651 if (force_exec_prot && !(view->protect & VPROT_NOEXEC) &&
652 (unix_prot & PROT_READ) && !(unix_prot & PROT_EXEC))
653 {
654 TRACE( "forcing exec permission on %p-%p\n", base, (char *)base + size - 1 );
655 if (!mprotect( base, size, unix_prot | PROT_EXEC )) goto done;
656 /* exec + write may legitimately fail, in that case fall back to write only */
657 if (!(unix_prot & PROT_WRITE)) return FALSE;
658 }
659
660 if (mprotect( base, size, unix_prot )) return FALSE; /* FIXME: last error */
661
662 done:
663 memset( p, vprot, size >> page_shift );
664 VIRTUAL_DEBUG_DUMP_VIEW( view );
665 return TRUE;
666 }
667
668
669 /***********************************************************************
670 * reset_write_watches
671 *
672 * Reset write watches in a memory range.
673 */
674 static void reset_write_watches( struct file_view *view, void *base, SIZE_T size )
675 {
676 SIZE_T i, count;
677 int prot, unix_prot;
678 char *addr = base;
679 BYTE *p = view->prot + ((addr - (char *)view->base) >> page_shift);
680
681 p[0] |= VPROT_WRITEWATCH;
682 unix_prot = VIRTUAL_GetUnixProt( p[0] );
683 for (count = i = 1; i < size >> page_shift; i++, count++)
684 {
685 p[i] |= VPROT_WRITEWATCH;
686 prot = VIRTUAL_GetUnixProt( p[i] );
687 if (prot == unix_prot) continue;
688 mprotect( addr, count << page_shift, unix_prot );
689 addr += count << page_shift;
690 unix_prot = prot;
691 count = 0;
692 }
693 if (count) mprotect( addr, count << page_shift, unix_prot );
694 }
695
696
697 /***********************************************************************
698 * unmap_extra_space
699 *
700 * Release the extra memory while keeping the range starting on the granularity boundary.
701 */
702 static inline void *unmap_extra_space( void *ptr, size_t total_size, size_t wanted_size, size_t mask )
703 {
704 if ((ULONG_PTR)ptr & mask)
705 {
706 size_t extra = mask + 1 - ((ULONG_PTR)ptr & mask);
707 munmap( ptr, extra );
708 ptr = (char *)ptr + extra;
709 total_size -= extra;
710 }
711 if (total_size > wanted_size)
712 munmap( (char *)ptr + wanted_size, total_size - wanted_size );
713 return ptr;
714 }
715
716
717 struct alloc_area
718 {
719 size_t size;
720 size_t mask;
721 int top_down;
722 void *limit;
723 void *result;
724 };
725
726 /***********************************************************************
727 * alloc_reserved_area_callback
728 *
729 * Try to map some space inside a reserved area. Callback for wine_mmap_enum_reserved_areas.
730 */
731 static int alloc_reserved_area_callback( void *start, size_t size, void *arg )
732 {
733 struct alloc_area *alloc = arg;
734 void *end = (char *)start + size;
735
736 if (start < address_space_start) start = address_space_start;
737 if (is_beyond_limit( start, size, alloc->limit )) end = alloc->limit;
738 if (start >= end) return 0;
739
740 /* make sure we don't touch the preloader reserved range */
741 if (preload_reserve_end >= start)
742 {
743 if (preload_reserve_end >= end)
744 {
745 if (preload_reserve_start <= start) return 0; /* no space in that area */
746 if (preload_reserve_start < end) end = preload_reserve_start;
747 }
748 else if (preload_reserve_start <= start) start = preload_reserve_end;
749 else
750 {
751 /* range is split in two by the preloader reservation, try first part */
752 if ((alloc->result = find_free_area( start, preload_reserve_start, alloc->size,
753 alloc->mask, alloc->top_down )))
754 return 1;
755 /* then fall through to try second part */
756 start = preload_reserve_end;
757 }
758 }
759 if ((alloc->result = find_free_area( start, end, alloc->size, alloc->mask, alloc->top_down )))
760 return 1;
761
762 return 0;
763 }
764
765
766 /***********************************************************************
767 * map_view
768 *
769 * Create a view and mmap the corresponding memory area.
770 * The csVirtual section must be held by caller.
771 */
772 static NTSTATUS map_view( struct file_view **view_ret, void *base, size_t size, size_t mask,
773 int top_down, unsigned int vprot )
774 {
775 void *ptr;
776 NTSTATUS status;
777
778 if (base)
779 {
780 if (is_beyond_limit( base, size, address_space_limit ))
781 return STATUS_WORKING_SET_LIMIT_RANGE;
782
783 switch (wine_mmap_is_in_reserved_area( base, size ))
784 {
785 case -1: /* partially in a reserved area */
786 return STATUS_CONFLICTING_ADDRESSES;
787
788 case 0: /* not in a reserved area, do a normal allocation */
789 if ((ptr = wine_anon_mmap( base, size, VIRTUAL_GetUnixProt(vprot), 0 )) == (void *)-1)
790 {
791 if (errno == ENOMEM) return STATUS_NO_MEMORY;
792 return STATUS_INVALID_PARAMETER;
793 }
794 if (ptr != base)
795 {
796 /* We couldn't get the address we wanted */
797 if (is_beyond_limit( ptr, size, user_space_limit )) add_reserved_area( ptr, size );
798 else munmap( ptr, size );
799 return STATUS_CONFLICTING_ADDRESSES;
800 }
801 break;
802
803 default:
804 case 1: /* in a reserved area, make sure the address is available */
805 if (find_view_range( base, size )) return STATUS_CONFLICTING_ADDRESSES;
806 /* replace the reserved area by our mapping */
807 if ((ptr = wine_anon_mmap( base, size, VIRTUAL_GetUnixProt(vprot), MAP_FIXED )) != base)
808 return STATUS_INVALID_PARAMETER;
809 break;
810 }
811 if (is_beyond_limit( ptr, size, working_set_limit )) working_set_limit = address_space_limit;
812 }
813 else
814 {
815 size_t view_size = size + mask + 1;
816 struct alloc_area alloc;
817
818 alloc.size = size;
819 alloc.mask = mask;
820 alloc.top_down = top_down;
821 alloc.limit = user_space_limit;
822 if (wine_mmap_enum_reserved_areas( alloc_reserved_area_callback, &alloc, top_down ))
823 {
824 ptr = alloc.result;
825 TRACE( "got mem in reserved area %p-%p\n", ptr, (char *)ptr + size );
826 if (wine_anon_mmap( ptr, size, VIRTUAL_GetUnixProt(vprot), MAP_FIXED ) != ptr)
827 return STATUS_INVALID_PARAMETER;
828 goto done;
829 }
830
831 for (;;)
832 {
833 if ((ptr = wine_anon_mmap( NULL, view_size, VIRTUAL_GetUnixProt(vprot), 0 )) == (void *)-1)
834 {
835 if (errno == ENOMEM) return STATUS_NO_MEMORY;
836 return STATUS_INVALID_PARAMETER;
837 }
838 TRACE( "got mem with anon mmap %p-%p\n", ptr, (char *)ptr + size );
839 /* if we got something beyond the user limit, unmap it and retry */
840 if (is_beyond_limit( ptr, view_size, user_space_limit )) add_reserved_area( ptr, view_size );
841 else break;
842 }
843 ptr = unmap_extra_space( ptr, view_size, size, mask );
844 }
845 done:
846 status = create_view( view_ret, ptr, size, vprot );
847 if (status != STATUS_SUCCESS) unmap_area( ptr, size );
848 return status;
849 }
850
851
852 /***********************************************************************
853 * map_file_into_view
854 *
855 * Wrapper for mmap() to map a file into a view, falling back to read if mmap fails.
856 * The csVirtual section must be held by caller.
857 */
858 static NTSTATUS map_file_into_view( struct file_view *view, int fd, size_t start, size_t size,
859 off_t offset, unsigned int vprot, BOOL removable )
860 {
861 void *ptr;
862 int prot = VIRTUAL_GetUnixProt( vprot | VPROT_COMMITTED /* make sure it is accessible */ );
863 BOOL shared_write = (vprot & VPROT_WRITE) != 0;
864
865 assert( start < view->size );
866 assert( start + size <= view->size );
867
868 if (force_exec_prot && !(vprot & VPROT_NOEXEC) && (vprot & VPROT_READ))
869 {
870 TRACE( "forcing exec permission on mapping %p-%p\n",
871 (char *)view->base + start, (char *)view->base + start + size - 1 );
872 prot |= PROT_EXEC;
873 }
874
875 /* only try mmap if media is not removable (or if we require write access) */
876 if (!removable || shared_write)
877 {
878 int flags = MAP_FIXED | (shared_write ? MAP_SHARED : MAP_PRIVATE);
879
880 if (mmap( (char *)view->base + start, size, prot, flags, fd, offset ) != (void *)-1)
881 goto done;
882
883 if ((errno == EPERM) && (prot & PROT_EXEC))
884 ERR( "failed to set %08x protection on file map, noexec filesystem?\n", prot );
885
886 /* mmap() failed; if this is because the file offset is not */
887 /* page-aligned (EINVAL), or because the underlying filesystem */
888 /* does not support mmap() (ENOEXEC,ENODEV), we do it by hand. */
889 if ((errno != ENOEXEC) && (errno != EINVAL) && (errno != ENODEV)) return FILE_GetNtStatus();
890 if (shared_write) /* we cannot fake shared write mappings */
891 {
892 if (errno == EINVAL) return STATUS_INVALID_PARAMETER;
893 ERR( "shared writable mmap not supported, broken filesystem?\n" );
894 return STATUS_NOT_SUPPORTED;
895 }
896 }
897
898 /* Reserve the memory with an anonymous mmap */
899 ptr = wine_anon_mmap( (char *)view->base + start, size, PROT_READ | PROT_WRITE, MAP_FIXED );
900 if (ptr == (void *)-1) return FILE_GetNtStatus();
901 /* Now read in the file */
902 pread( fd, ptr, size, offset );
903 if (prot != (PROT_READ|PROT_WRITE)) mprotect( ptr, size, prot ); /* Set the right protection */
904 done:
905 memset( view->prot + (start >> page_shift), vprot, ROUND_SIZE(start,size) >> page_shift );
906 return STATUS_SUCCESS;
907 }
908
909
910 /***********************************************************************
911 * get_committed_size
912 *
913 * Get the size of the committed range starting at base.
914 * Also return the protections for the first page.
915 */
916 static SIZE_T get_committed_size( struct file_view *view, void *base, BYTE *vprot )
917 {
918 SIZE_T i, start;
919
920 start = ((char *)base - (char *)view->base) >> page_shift;
921 *vprot = view->prot[start];
922
923 if (view->mapping && !(view->protect & VPROT_COMMITTED))
924 {
925 SIZE_T ret = 0;
926 SERVER_START_REQ( get_mapping_committed_range )
927 {
928 req->handle = wine_server_obj_handle( view->mapping );
929 req->offset = start << page_shift;
930 if (!wine_server_call( req ))
931 {
932 ret = reply->size;
933 if (reply->committed)
934 {
935 *vprot |= VPROT_COMMITTED;
936 for (i = 0; i < ret >> page_shift; i++) view->prot[start+i] |= VPROT_COMMITTED;
937 }
938 }
939 }
940 SERVER_END_REQ;
941 return ret;
942 }
943 for (i = start + 1; i < view->size >> page_shift; i++)
944 if ((*vprot ^ view->prot[i]) & VPROT_COMMITTED) break;
945 return (i - start) << page_shift;
946 }
947
948
949 /***********************************************************************
950 * decommit_view
951 *
952 * Decommit some pages of a given view.
953 * The csVirtual section must be held by caller.
954 */
955 static NTSTATUS decommit_pages( struct file_view *view, size_t start, size_t size )
956 {
957 if (wine_anon_mmap( (char *)view->base + start, size, PROT_NONE, MAP_FIXED ) != (void *)-1)
958 {
959 BYTE *p = view->prot + (start >> page_shift);
960 size >>= page_shift;
961 while (size--) *p++ &= ~VPROT_COMMITTED;
962 return STATUS_SUCCESS;
963 }
964 return FILE_GetNtStatus();
965 }
966
967
968 /***********************************************************************
969 * allocate_dos_memory
970 *
971 * Allocate the DOS memory range.
972 */
973 static NTSTATUS allocate_dos_memory( struct file_view **view, unsigned int vprot )
974 {
975 size_t size;
976 void *addr = NULL;
977 void * const low_64k = (void *)0x10000;
978 const size_t dosmem_size = 0x110000;
979 int unix_prot = VIRTUAL_GetUnixProt( vprot );
980 struct list *ptr;
981
982 /* check for existing view */
983
984 if ((ptr = list_head( &views_list )))
985 {
986 struct file_view *first_view = LIST_ENTRY( ptr, struct file_view, entry );
987 if (first_view->base < (void *)dosmem_size) return STATUS_CONFLICTING_ADDRESSES;
988 }
989
990 /* check without the first 64K */
991
992 if (wine_mmap_is_in_reserved_area( low_64k, dosmem_size - 0x10000 ) != 1)
993 {
994 addr = wine_anon_mmap( low_64k, dosmem_size - 0x10000, unix_prot, 0 );
995 if (addr != low_64k)
996 {
997 if (addr != (void *)-1) munmap( addr, dosmem_size - 0x10000 );
998 return map_view( view, NULL, dosmem_size, 0xffff, 0, vprot );
999 }
1000 }
1001
1002 /* now try to allocate the low 64K too */
1003
1004 if (wine_mmap_is_in_reserved_area( NULL, 0x10000 ) != 1)
1005 {
1006 addr = wine_anon_mmap( (void *)page_size, 0x10000 - page_size, unix_prot, 0 );
1007 if (addr == (void *)page_size)
1008 {
1009 if (!wine_anon_mmap( NULL, page_size, unix_prot, MAP_FIXED ))
1010 {
1011 addr = NULL;
1012 TRACE( "successfully mapped low 64K range\n" );
1013 }
1014 else TRACE( "failed to map page 0\n" );
1015 }
1016 else
1017 {
1018 if (addr != (void *)-1) munmap( addr, 0x10000 - page_size );
1019 addr = low_64k;
1020 TRACE( "failed to map low 64K range\n" );
1021 }
1022 }
1023
1024 /* now reserve the whole range */
1025
1026 size = (char *)dosmem_size - (char *)addr;
1027 wine_anon_mmap( addr, size, unix_prot, MAP_FIXED );
1028 return create_view( view, addr, size, vprot );
1029 }
1030
1031
1032 /***********************************************************************
1033 * check_architecture
1034 *
1035 * Check the architecture of a PE binary.
1036 */
1037 static NTSTATUS check_architecture( const IMAGE_NT_HEADERS *nt )
1038 {
1039 static const char *arch;
1040
1041 #ifdef __i386__
1042 if (nt->FileHeader.Machine == IMAGE_FILE_MACHINE_I386) return STATUS_SUCCESS;
1043 if (nt->FileHeader.Machine == IMAGE_FILE_MACHINE_AMD64)
1044 {
1045 if (nt->FileHeader.Characteristics & IMAGE_FILE_DLL) /* don't warn for a 64-bit exe */
1046 WARN( "loading amd64 dll in 32-bit mode will fail\n" );
1047 return STATUS_INVALID_IMAGE_FORMAT;
1048 }
1049 #elif defined(__x86_64__)
1050 if (nt->FileHeader.Machine == IMAGE_FILE_MACHINE_AMD64) return STATUS_SUCCESS;
1051 if (nt->FileHeader.Machine == IMAGE_FILE_MACHINE_I386)
1052 {
1053 if (nt->FileHeader.Characteristics & IMAGE_FILE_DLL) /* don't warn for a 32-bit exe */
1054 WARN( "loading 32-bit dll in 64-bit mode will fail\n" );
1055 return STATUS_INVALID_IMAGE_FORMAT;
1056 }
1057 #elif defined(__ARMEL__)
1058 if (nt->FileHeader.Machine == IMAGE_FILE_MACHINE_ARM ||
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_THUMB: arch = "ARM Thumb"; break;
1078 case IMAGE_FILE_MACHINE_SPARC: arch = "SPARC"; break;
1079 default: arch = wine_dbg_sprintf( "Unknown-%04x", nt->FileHeader.Machine ); break;
1080 }
1081 ERR( "Trying to load PE image for unsupported architecture %s\n", arch );
1082 return STATUS_INVALID_IMAGE_FORMAT;
1083 }
1084
1085
1086 /***********************************************************************
1087 * stat_mapping_file
1088 *
1089 * Stat the underlying file for a memory view.
1090 */
1091 static NTSTATUS stat_mapping_file( struct file_view *view, struct stat *st )
1092 {
1093 NTSTATUS status;
1094 int unix_fd, needs_close;
1095
1096 if (!view->mapping) return STATUS_NOT_MAPPED_VIEW;
1097 if (!(status = server_get_unix_fd( view->mapping, 0, &unix_fd, &needs_close, NULL, NULL )))
1098 {
1099 if (fstat( unix_fd, st ) == -1) status = FILE_GetNtStatus();
1100 if (needs_close) close( unix_fd );
1101 }
1102 return status;
1103 }
1104
1105
1106 /***********************************************************************
1107 * map_image
1108 *
1109 * Map an executable (PE format) image into memory.
1110 */
1111 static NTSTATUS map_image( HANDLE hmapping, int fd, char *base, SIZE_T total_size, SIZE_T mask,
1112 SIZE_T header_size, int shared_fd, HANDLE dup_mapping, PVOID *addr_ptr )
1113 {
1114 IMAGE_DOS_HEADER *dos;
1115 IMAGE_NT_HEADERS *nt;
1116 IMAGE_SECTION_HEADER *sec;
1117 IMAGE_DATA_DIRECTORY *imports;
1118 NTSTATUS status = STATUS_CONFLICTING_ADDRESSES;
1119 int i;
1120 off_t pos;
1121 sigset_t sigset;
1122 struct stat st;
1123 struct file_view *view = NULL;
1124 char *ptr, *header_end;
1125 INT_PTR delta = 0;
1126
1127 /* zero-map the whole range */
1128
1129 server_enter_uninterrupted_section( &csVirtual, &sigset );
1130
1131 if (base >= (char *)address_space_start) /* make sure the DOS area remains free */
1132 status = map_view( &view, base, total_size, mask, FALSE,
1133 VPROT_COMMITTED | VPROT_READ | VPROT_EXEC | VPROT_WRITECOPY | VPROT_IMAGE );
1134
1135 if (status != STATUS_SUCCESS)
1136 status = map_view( &view, NULL, total_size, mask, FALSE,
1137 VPROT_COMMITTED | VPROT_READ | VPROT_EXEC | VPROT_WRITECOPY | VPROT_IMAGE );
1138
1139 if (status != STATUS_SUCCESS) goto error;
1140
1141 ptr = view->base;
1142 TRACE_(module)( "mapped PE file at %p-%p\n", ptr, ptr + total_size );
1143
1144 /* map the header */
1145
1146 if (fstat( fd, &st ) == -1)
1147 {
1148 status = FILE_GetNtStatus();
1149 goto error;
1150 }
1151 status = STATUS_INVALID_IMAGE_FORMAT; /* generic error */
1152 if (!st.st_size) goto error;
1153 header_size = min( header_size, st.st_size );
1154 if (map_file_into_view( view, fd, 0, header_size, 0, VPROT_COMMITTED | VPROT_READ | VPROT_WRITECOPY,
1155 !dup_mapping ) != STATUS_SUCCESS) goto error;
1156 dos = (IMAGE_DOS_HEADER *)ptr;
1157 nt = (IMAGE_NT_HEADERS *)(ptr + dos->e_lfanew);
1158 header_end = ptr + ROUND_SIZE( 0, header_size );
1159 memset( ptr + header_size, 0, header_end - (ptr + header_size) );
1160 if ((char *)(nt + 1) > header_end) goto error;
1161 sec = (IMAGE_SECTION_HEADER*)((char*)&nt->OptionalHeader+nt->FileHeader.SizeOfOptionalHeader);
1162 if ((char *)(sec + nt->FileHeader.NumberOfSections) > header_end) goto error;
1163
1164 imports = nt->OptionalHeader.DataDirectory + IMAGE_DIRECTORY_ENTRY_IMPORT;
1165 if (!imports->Size || !imports->VirtualAddress) imports = NULL;
1166
1167 if (check_architecture( nt )) goto error;
1168
1169 /* check for non page-aligned binary */
1170
1171 if (nt->OptionalHeader.SectionAlignment <= page_mask)
1172 {
1173 /* unaligned sections, this happens for native subsystem binaries */
1174 /* in that case Windows simply maps in the whole file */
1175
1176 if (map_file_into_view( view, fd, 0, total_size, 0, VPROT_COMMITTED | VPROT_READ,
1177 !dup_mapping ) != STATUS_SUCCESS) goto error;
1178
1179 /* check that all sections are loaded at the right offset */
1180 if (nt->OptionalHeader.FileAlignment != nt->OptionalHeader.SectionAlignment) goto error;
1181 for (i = 0; i < nt->FileHeader.NumberOfSections; i++)
1182 {
1183 if (sec[i].VirtualAddress != sec[i].PointerToRawData)
1184 goto error; /* Windows refuses to load in that case too */
1185 }
1186
1187 /* set the image protections */
1188 VIRTUAL_SetProt( view, ptr, total_size,
1189 VPROT_COMMITTED | VPROT_READ | VPROT_WRITECOPY | VPROT_EXEC );
1190
1191 /* no relocations are performed on non page-aligned binaries */
1192 goto done;
1193 }
1194
1195
1196 /* map all the sections */
1197
1198 for (i = pos = 0; i < nt->FileHeader.NumberOfSections; i++, sec++)
1199 {
1200 static const SIZE_T sector_align = 0x1ff;
1201 SIZE_T map_size, file_start, file_size, end;
1202
1203 if (!sec->Misc.VirtualSize)
1204 map_size = ROUND_SIZE( 0, sec->SizeOfRawData );
1205 else
1206 map_size = ROUND_SIZE( 0, sec->Misc.VirtualSize );
1207
1208 /* file positions are rounded to sector boundaries regardless of OptionalHeader.FileAlignment */
1209 file_start = sec->PointerToRawData & ~sector_align;
1210 file_size = (sec->SizeOfRawData + (sec->PointerToRawData & sector_align) + sector_align) & ~sector_align;
1211 if (file_size > map_size) file_size = map_size;
1212
1213 /* a few sanity checks */
1214 end = sec->VirtualAddress + ROUND_SIZE( sec->VirtualAddress, map_size );
1215 if (sec->VirtualAddress > total_size || end > total_size || end < sec->VirtualAddress)
1216 {
1217 WARN_(module)( "Section %.8s too large (%x+%lx/%lx)\n",
1218 sec->Name, sec->VirtualAddress, map_size, total_size );
1219 goto error;
1220 }
1221
1222 if ((sec->Characteristics & IMAGE_SCN_MEM_SHARED) &&
1223 (sec->Characteristics & IMAGE_SCN_MEM_WRITE))
1224 {
1225 TRACE_(module)( "mapping shared section %.8s at %p off %x (%x) size %lx (%lx) flags %x\n",
1226 sec->Name, ptr + sec->VirtualAddress,
1227 sec->PointerToRawData, (int)pos, file_size, map_size,
1228 sec->Characteristics );
1229 if (map_file_into_view( view, shared_fd, sec->VirtualAddress, map_size, pos,
1230 VPROT_COMMITTED | VPROT_READ | VPROT_WRITE,
1231 FALSE ) != STATUS_SUCCESS)
1232 {
1233 ERR_(module)( "Could not map shared section %.8s\n", sec->Name );
1234 goto error;
1235 }
1236
1237 /* check if the import directory falls inside this section */
1238 if (imports && imports->VirtualAddress >= sec->VirtualAddress &&
1239 imports->VirtualAddress < sec->VirtualAddress + map_size)
1240 {
1241 UINT_PTR base = imports->VirtualAddress & ~page_mask;
1242 UINT_PTR end = base + ROUND_SIZE( imports->VirtualAddress, imports->Size );
1243 if (end > sec->VirtualAddress + map_size) end = sec->VirtualAddress + map_size;
1244 if (end > base)
1245 map_file_into_view( view, shared_fd, base, end - base,
1246 pos + (base - sec->VirtualAddress),
1247 VPROT_COMMITTED | VPROT_READ | VPROT_WRITECOPY,
1248 FALSE );
1249 }
1250 pos += map_size;
1251 continue;
1252 }
1253
1254 TRACE_(module)( "mapping section %.8s at %p off %x size %x virt %x flags %x\n",
1255 sec->Name, ptr + sec->VirtualAddress,
1256 sec->PointerToRawData, sec->SizeOfRawData,
1257 sec->Misc.VirtualSize, sec->Characteristics );
1258
1259 if (!sec->PointerToRawData || !file_size) continue;
1260
1261 /* Note: if the section is not aligned properly map_file_into_view will magically
1262 * fall back to read(), so we don't need to check anything here.
1263 */
1264 end = file_start + file_size;
1265 if (sec->PointerToRawData >= st.st_size ||
1266 end > ((st.st_size + sector_align) & ~sector_align) ||
1267 end < file_start ||
1268 map_file_into_view( view, fd, sec->VirtualAddress, file_size, file_start,
1269 VPROT_COMMITTED | VPROT_READ | VPROT_WRITECOPY,
1270 !dup_mapping ) != STATUS_SUCCESS)
1271 {
1272 ERR_(module)( "Could not map section %.8s, file probably truncated\n", sec->Name );
1273 goto error;
1274 }
1275
1276 if (file_size & page_mask)
1277 {
1278 end = ROUND_SIZE( 0, file_size );
1279 if (end > map_size) end = map_size;
1280 TRACE_(module)("clearing %p - %p\n",
1281 ptr + sec->VirtualAddress + file_size,
1282 ptr + sec->VirtualAddress + end );
1283 memset( ptr + sec->VirtualAddress + file_size, 0, end - file_size );
1284 }
1285 }
1286
1287
1288 /* perform base relocation, if necessary */
1289
1290 if (ptr != base &&
1291 ((nt->FileHeader.Characteristics & IMAGE_FILE_DLL) ||
1292 !NtCurrentTeb()->Peb->ImageBaseAddress) )
1293 {
1294 IMAGE_BASE_RELOCATION *rel, *end;
1295 const IMAGE_DATA_DIRECTORY *relocs;
1296
1297 if (nt->FileHeader.Characteristics & IMAGE_FILE_RELOCS_STRIPPED)
1298 {
1299 WARN_(module)( "Need to relocate module from %p to %p, but there are no relocation records\n",
1300 base, ptr );
1301 status = STATUS_CONFLICTING_ADDRESSES;
1302 goto error;
1303 }
1304
1305 TRACE_(module)( "relocating from %p-%p to %p-%p\n",
1306 base, base + total_size, ptr, ptr + total_size );
1307
1308 relocs = &nt->OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_BASERELOC];
1309 rel = (IMAGE_BASE_RELOCATION *)(ptr + relocs->VirtualAddress);
1310 end = (IMAGE_BASE_RELOCATION *)(ptr + relocs->VirtualAddress + relocs->Size);
1311 delta = ptr - base;
1312
1313 while (rel < end - 1 && rel->SizeOfBlock)
1314 {
1315 if (rel->VirtualAddress >= total_size)
1316 {
1317 WARN_(module)( "invalid address %p in relocation %p\n", ptr + rel->VirtualAddress, rel );
1318 status = STATUS_ACCESS_VIOLATION;
1319 goto error;
1320 }
1321 rel = LdrProcessRelocationBlock( ptr + rel->VirtualAddress,
1322 (rel->SizeOfBlock - sizeof(*rel)) / sizeof(USHORT),
1323 (USHORT *)(rel + 1), delta );
1324 if (!rel) goto error;
1325 }
1326 }
1327
1328 /* set the image protections */
1329
1330 VIRTUAL_SetProt( view, ptr, ROUND_SIZE( 0, header_size ), VPROT_COMMITTED | VPROT_READ );
1331
1332 sec = (IMAGE_SECTION_HEADER*)((char *)&nt->OptionalHeader+nt->FileHeader.SizeOfOptionalHeader);
1333 for (i = 0; i < nt->FileHeader.NumberOfSections; i++, sec++)
1334 {
1335 SIZE_T size;
1336 BYTE vprot = VPROT_COMMITTED;
1337
1338 if (sec->Misc.VirtualSize)
1339 size = ROUND_SIZE( sec->VirtualAddress, sec->Misc.VirtualSize );
1340 else
1341 size = ROUND_SIZE( sec->VirtualAddress, sec->SizeOfRawData );
1342
1343 if (sec->Characteristics & IMAGE_SCN_MEM_READ) vprot |= VPROT_READ;
1344 if (sec->Characteristics & IMAGE_SCN_MEM_WRITE) vprot |= VPROT_READ|VPROT_WRITE;
1345 if (sec->Characteristics & IMAGE_SCN_MEM_EXECUTE) vprot |= VPROT_EXEC;
1346
1347 /* Dumb game crack lets the AOEP point into a data section. Adjust. */
1348 if ((nt->OptionalHeader.AddressOfEntryPoint >= sec->VirtualAddress) &&
1349 (nt->OptionalHeader.AddressOfEntryPoint < sec->VirtualAddress + size))
1350 vprot |= VPROT_EXEC;
1351
1352 if (!VIRTUAL_SetProt( view, ptr + sec->VirtualAddress, size, vprot ) && (vprot & VPROT_EXEC))
1353 ERR( "failed to set %08x protection on section %.8s, noexec filesystem?\n",
1354 sec->Characteristics, sec->Name );
1355 }
1356
1357 done:
1358 view->mapping = dup_mapping;
1359 server_leave_uninterrupted_section( &csVirtual, &sigset );
1360
1361 *addr_ptr = ptr;
1362 #ifdef VALGRIND_LOAD_PDB_DEBUGINFO
1363 VALGRIND_LOAD_PDB_DEBUGINFO(fd, ptr, total_size, delta);
1364 #endif
1365 if (ptr != base) return STATUS_IMAGE_NOT_AT_BASE;
1366 return STATUS_SUCCESS;
1367
1368 error:
1369 if (view) delete_view( view );
1370 server_leave_uninterrupted_section( &csVirtual, &sigset );
1371 if (dup_mapping) NtClose( dup_mapping );
1372 return status;
1373 }
1374
1375
1376 /* callback for wine_mmap_enum_reserved_areas to allocate space for the virtual heap */
1377 static int alloc_virtual_heap( void *base, size_t size, void *arg )
1378 {
1379 void **heap_base = arg;
1380
1381 if (is_beyond_limit( base, size, address_space_limit )) address_space_limit = (char *)base + size;
1382 if (size < VIRTUAL_HEAP_SIZE) return 0;
1383 if (is_win64 && base < (void *)0x80000000) return 0;
1384 *heap_base = wine_anon_mmap( (char *)base + size - VIRTUAL_HEAP_SIZE,
1385 VIRTUAL_HEAP_SIZE, PROT_READ|PROT_WRITE, MAP_FIXED );
1386 return (*heap_base != (void *)-1);
1387 }
1388
1389 /***********************************************************************
1390 * virtual_init
1391 */
1392 void virtual_init(void)
1393 {
1394 const char *preload;
1395 void *heap_base;
1396 size_t size;
1397 struct file_view *heap_view;
1398
1399 #ifndef page_mask
1400 page_size = getpagesize();
1401 page_mask = page_size - 1;
1402 /* Make sure we have a power of 2 */
1403 assert( !(page_size & page_mask) );
1404 page_shift = 0;
1405 while ((1 << page_shift) != page_size) page_shift++;
1406 user_space_limit = working_set_limit = address_space_limit = (void *)~page_mask;
1407 #endif /* page_mask */
1408 if ((preload = getenv("WINEPRELOADRESERVE")))
1409 {
1410 unsigned long start, end;
1411 if (sscanf( preload, "%lx-%lx", &start, &end ) == 2)
1412 {
1413 preload_reserve_start = (void *)start;
1414 preload_reserve_end = (void *)end;
1415 }
1416 }
1417
1418 /* try to find space in a reserved area for the virtual heap */
1419 if (!wine_mmap_enum_reserved_areas( alloc_virtual_heap, &heap_base, 1 ))
1420 heap_base = wine_anon_mmap( NULL, VIRTUAL_HEAP_SIZE, PROT_READ|PROT_WRITE, 0 );
1421
1422 assert( heap_base != (void *)-1 );
1423 virtual_heap = RtlCreateHeap( HEAP_NO_SERIALIZE, heap_base, VIRTUAL_HEAP_SIZE,
1424 VIRTUAL_HEAP_SIZE, NULL, NULL );
1425 create_view( &heap_view, heap_base, VIRTUAL_HEAP_SIZE, VPROT_COMMITTED | VPROT_READ | VPROT_WRITE );
1426
1427 /* make the DOS area accessible (except the low 64K) to hide bugs in broken apps like Excel 2003 */
1428 size = (char *)address_space_start - (char *)0x10000;
1429 if (size && wine_mmap_is_in_reserved_area( (void*)0x10000, size ) == 1)
1430 wine_anon_mmap( (void *)0x10000, size, PROT_READ | PROT_WRITE, MAP_FIXED );
1431 }
1432
1433
1434 /***********************************************************************
1435 * virtual_init_threading
1436 */
1437 void virtual_init_threading(void)
1438 {
1439 use_locks = 1;
1440 }
1441
1442
1443 /***********************************************************************
1444 * virtual_get_system_info
1445 */
1446 void virtual_get_system_info( SYSTEM_BASIC_INFORMATION *info )
1447 {
1448 info->unknown = 0;
1449 info->KeMaximumIncrement = 0; /* FIXME */
1450 info->PageSize = page_size;
1451 info->MmLowestPhysicalPage = 1;
1452 info->MmHighestPhysicalPage = 0x7fffffff / page_size;
1453 info->MmNumberOfPhysicalPages = info->MmHighestPhysicalPage - info->MmLowestPhysicalPage;
1454 info->AllocationGranularity = get_mask(0) + 1;
1455 info->LowestUserAddress = (void *)0x10000;
1456 info->HighestUserAddress = (char *)user_space_limit - 1;
1457 info->ActiveProcessorsAffinityMask = (1 << NtCurrentTeb()->Peb->NumberOfProcessors) - 1;
1458 info->NumberOfProcessors = NtCurrentTeb()->Peb->NumberOfProcessors;
1459 }
1460
1461
1462 /***********************************************************************
1463 * virtual_create_system_view
1464 */
1465 NTSTATUS virtual_create_builtin_view( void *module )
1466 {
1467 NTSTATUS status;
1468 sigset_t sigset;
1469 IMAGE_NT_HEADERS *nt = RtlImageNtHeader( module );
1470 SIZE_T size = nt->OptionalHeader.SizeOfImage;
1471 IMAGE_SECTION_HEADER *sec;
1472 struct file_view *view;
1473 void *base;
1474 int i;
1475
1476 size = ROUND_SIZE( module, size );
1477 base = ROUND_ADDR( module, page_mask );
1478 server_enter_uninterrupted_section( &csVirtual, &sigset );
1479 status = create_view( &view, base, size, VPROT_SYSTEM | VPROT_IMAGE |
1480 VPROT_COMMITTED | VPROT_READ | VPROT_WRITECOPY | VPROT_EXEC );
1481 if (!status) TRACE( "created %p-%p\n", base, (char *)base + size );
1482 server_leave_uninterrupted_section( &csVirtual, &sigset );
1483
1484 if (status) return status;
1485
1486 /* The PE header is always read-only, no write, no execute. */
1487 view->prot[0] = VPROT_COMMITTED | VPROT_READ;
1488
1489 sec = (IMAGE_SECTION_HEADER *)((char *)&nt->OptionalHeader + nt->FileHeader.SizeOfOptionalHeader);
1490 for (i = 0; i < nt->FileHeader.NumberOfSections; i++)
1491 {
1492 BYTE flags = VPROT_COMMITTED;
1493
1494 if (sec[i].Characteristics & IMAGE_SCN_MEM_EXECUTE) flags |= VPROT_EXEC;
1495 if (sec[i].Characteristics & IMAGE_SCN_MEM_READ) flags |= VPROT_READ;
1496 if (sec[i].Characteristics & IMAGE_SCN_MEM_WRITE) flags |= VPROT_WRITE;
1497 memset (view->prot + (sec[i].VirtualAddress >> page_shift), flags,
1498 ROUND_SIZE( sec[i].VirtualAddress, sec[i].Misc.VirtualSize ) >> page_shift );
1499 }
1500
1501 return status;
1502 }
1503
1504
1505 /***********************************************************************
1506 * virtual_alloc_thread_stack
1507 */
1508 NTSTATUS virtual_alloc_thread_stack( TEB *teb, SIZE_T reserve_size, SIZE_T commit_size )
1509 {
1510 struct file_view *view;
1511 NTSTATUS status;
1512 sigset_t sigset;
1513 SIZE_T size;
1514
1515 if (!reserve_size || !commit_size)
1516 {
1517 IMAGE_NT_HEADERS *nt = RtlImageNtHeader( NtCurrentTeb()->Peb->ImageBaseAddress );
1518 if (!reserve_size) reserve_size = nt->OptionalHeader.SizeOfStackReserve;
1519 if (!commit_size) commit_size = nt->OptionalHeader.SizeOfStackCommit;
1520 }
1521
1522 size = max( reserve_size, commit_size );
1523 if (size < 1024 * 1024) size = 1024 * 1024; /* Xlib needs a large stack */
1524 size = (size + 0xffff) & ~0xffff; /* round to 64K boundary */
1525
1526 server_enter_uninterrupted_section( &csVirtual, &sigset );
1527
1528 if ((status = map_view( &view, NULL, size, 0xffff, 0,
1529 VPROT_READ | VPROT_WRITE | VPROT_COMMITTED | VPROT_VALLOC )) != STATUS_SUCCESS)
1530 goto done;
1531
1532 #ifdef VALGRIND_STACK_REGISTER
1533 VALGRIND_STACK_REGISTER( view->base, (char *)view->base + view->size );
1534 #endif
1535
1536 /* setup no access guard page */
1537 VIRTUAL_SetProt( view, view->base, page_size, VPROT_COMMITTED );
1538 VIRTUAL_SetProt( view, (char *)view->base + page_size, page_size,
1539 VPROT_READ | VPROT_WRITE | VPROT_COMMITTED | VPROT_GUARD );
1540
1541 /* note: limit is lower than base since the stack grows down */
1542 teb->DeallocationStack = view->base;
1543 teb->Tib.StackBase = (char *)view->base + view->size;
1544 teb->Tib.StackLimit = (char *)view->base + 2 * page_size;
1545 done:
1546 server_leave_uninterrupted_section( &csVirtual, &sigset );
1547 return status;
1548 }
1549
1550
1551 /***********************************************************************
1552 * virtual_clear_thread_stack
1553 *
1554 * Clear the stack contents before calling the main entry point, some broken apps need that.
1555 */
1556 void virtual_clear_thread_stack(void)
1557 {
1558 void *stack = NtCurrentTeb()->Tib.StackLimit;
1559 size_t size = (char *)NtCurrentTeb()->Tib.StackBase - (char *)NtCurrentTeb()->Tib.StackLimit;
1560
1561 wine_anon_mmap( stack, size, PROT_READ | PROT_WRITE, MAP_FIXED );
1562 if (force_exec_prot) mprotect( stack, size, PROT_READ | PROT_WRITE | PROT_EXEC );
1563 }
1564
1565
1566 /***********************************************************************
1567 * virtual_handle_fault
1568 */
1569 NTSTATUS virtual_handle_fault( LPCVOID addr, DWORD err )
1570 {
1571 struct file_view *view;
1572 NTSTATUS ret = STATUS_ACCESS_VIOLATION;
1573 sigset_t sigset;
1574
1575 server_enter_uninterrupted_section( &csVirtual, &sigset );
1576 if ((view = VIRTUAL_FindView( addr, 0 )))
1577 {
1578 void *page = ROUND_ADDR( addr, page_mask );
1579 BYTE *vprot = &view->prot[((const char *)page - (const char *)view->base) >> page_shift];
1580 if (*vprot & VPROT_GUARD)
1581 {
1582 VIRTUAL_SetProt( view, page, page_size, *vprot & ~VPROT_GUARD );
1583 ret = STATUS_GUARD_PAGE_VIOLATION;
1584 }
1585 if ((err & EXCEPTION_WRITE_FAULT) && (view->protect & VPROT_WRITEWATCH))
1586 {
1587 if (*vprot & VPROT_WRITEWATCH)
1588 {
1589 *vprot &= ~VPROT_WRITEWATCH;
1590 VIRTUAL_SetProt( view, page, page_size, *vprot );
1591 }
1592 /* ignore fault if page is writable now */
1593 if (VIRTUAL_GetUnixProt( *vprot ) & PROT_WRITE) ret = STATUS_SUCCESS;
1594 }
1595 }
1596 server_leave_uninterrupted_section( &csVirtual, &sigset );
1597 return ret;
1598 }
1599
1600
1601
1602 /***********************************************************************
1603 * virtual_handle_stack_fault
1604 *
1605 * Handle an access fault inside the current thread stack.
1606 * Called from inside a signal handler.
1607 */
1608 BOOL virtual_handle_stack_fault( void *addr )
1609 {
1610 struct file_view *view;
1611 BOOL ret = FALSE;
1612
1613 RtlEnterCriticalSection( &csVirtual ); /* no need for signal masking inside signal handler */
1614 if ((view = VIRTUAL_FindView( addr, 0 )))
1615 {
1616 void *page = ROUND_ADDR( addr, page_mask );
1617 BYTE vprot = view->prot[((const char *)page - (const char *)view->base) >> page_shift];
1618 if (vprot & VPROT_GUARD)
1619 {
1620 VIRTUAL_SetProt( view, page, page_size, vprot & ~VPROT_GUARD );
1621 NtCurrentTeb()->Tib.StackLimit = page;
1622 if ((char *)page >= (char *)NtCurrentTeb()->DeallocationStack + 2*page_size)
1623 {
1624 vprot = view->prot[((char *)page - page_size - (char *)view->base) >> page_shift];
1625 VIRTUAL_SetProt( view, (char *)page - page_size, page_size, vprot | VPROT_GUARD );
1626 }
1627 ret = TRUE;
1628 }
1629 }
1630 RtlLeaveCriticalSection( &csVirtual );
1631 return ret;
1632 }
1633
1634
1635 /***********************************************************************
1636 * virtual_check_buffer_for_read
1637 *
1638 * Check if a memory buffer can be read, triggering page faults if needed for DIB section access.
1639 */
1640 BOOL virtual_check_buffer_for_read( const void *ptr, SIZE_T size )
1641 {
1642 if (!size) return TRUE;
1643 if (!ptr) return FALSE;
1644
1645 __TRY
1646 {
1647 volatile const char *p = ptr;
1648 char dummy;
1649 SIZE_T count = size;
1650
1651 while (count > page_size)
1652 {
1653 dummy = *p;
1654 p += page_size;
1655 count -= page_size;
1656 }
1657 dummy = p[0];
1658 dummy = p[count - 1];
1659 }
1660 __EXCEPT_PAGE_FAULT
1661 {
1662 return FALSE;
1663 }
1664 __ENDTRY
1665 return TRUE;
1666 }
1667
1668
1669 /***********************************************************************
1670 * virtual_check_buffer_for_write
1671 *
1672 * Check if a memory buffer can be written to, triggering page faults if needed for write watches.
1673 */
1674 BOOL virtual_check_buffer_for_write( void *ptr, SIZE_T size )
1675 {
1676 if (!size) return TRUE;
1677 if (!ptr) return FALSE;
1678
1679 __TRY
1680 {
1681 volatile char *p = ptr;
1682 SIZE_T count = size;
1683
1684 while (count > page_size)
1685 {
1686 *p |= 0;
1687 p += page_size;
1688 count -= page_size;
1689 }
1690 p[0] |= 0;
1691 p[count - 1] |= 0;
1692 }
1693 __EXCEPT_PAGE_FAULT
1694 {
1695 return FALSE;
1696 }
1697 __ENDTRY
1698 return TRUE;
1699 }
1700
1701
1702 /***********************************************************************
1703 * VIRTUAL_SetForceExec
1704 *
1705 * Whether to force exec prot on all views.
1706 */
1707 void VIRTUAL_SetForceExec( BOOL enable )
1708 {
1709 struct file_view *view;
1710 sigset_t sigset;
1711
1712 server_enter_uninterrupted_section( &csVirtual, &sigset );
1713 if (!force_exec_prot != !enable) /* change all existing views */
1714 {
1715 force_exec_prot = enable;
1716
1717 LIST_FOR_EACH_ENTRY( view, &views_list, struct file_view, entry )
1718 {
1719 UINT i, count;
1720 char *addr = view->base;
1721 BYTE commit = view->mapping ? VPROT_COMMITTED : 0; /* file mappings are always accessible */
1722 int unix_prot = VIRTUAL_GetUnixProt( view->prot[0] | commit );
1723
1724 if (view->protect & VPROT_NOEXEC) continue;
1725 for (count = i = 1; i < view->size >> page_shift; i++, count++)
1726 {
1727 int prot = VIRTUAL_GetUnixProt( view->prot[i] | commit );
1728 if (prot == unix_prot) continue;
1729 if ((unix_prot & PROT_READ) && !(unix_prot & PROT_EXEC))
1730 {
1731 TRACE( "%s exec prot for %p-%p\n",
1732 force_exec_prot ? "enabling" : "disabling",
1733 addr, addr + (count << page_shift) - 1 );
1734 mprotect( addr, count << page_shift,
1735 unix_prot | (force_exec_prot ? PROT_EXEC : 0) );
1736 }
1737 addr += (count << page_shift);
1738 unix_prot = prot;
1739 count = 0;
1740 }
1741 if (count)
1742 {
1743 if ((unix_prot & PROT_READ) && !(unix_prot & PROT_EXEC))
1744 {
1745 TRACE( "%s exec prot for %p-%p\n",
1746 force_exec_prot ? "enabling" : "disabling",
1747 addr, addr + (count << page_shift) - 1 );
1748 mprotect( addr, count << page_shift,
1749 unix_prot | (force_exec_prot ? PROT_EXEC : 0) );
1750 }
1751 }
1752 }
1753 }
1754 server_leave_uninterrupted_section( &csVirtual, &sigset );
1755 }
1756
1757 struct free_range
1758 {
1759 char *base;
1760 char *limit;
1761 };
1762
1763 /* free reserved areas above the limit; callback for wine_mmap_enum_reserved_areas */
1764 static int free_reserved_memory( void *base, size_t size, void *arg )
1765 {
1766 struct free_range *range = arg;
1767
1768 if ((char *)base >= range->limit) return 0;
1769 if ((char *)base + size <= range->base) return 0;
1770 if ((char *)base < range->base)
1771 {
1772 size -= range->base - (char *)base;
1773 base = range->base;
1774 }
1775 if ((char *)base + size > range->limit) size = range->limit - (char *)base;
1776 remove_reserved_area( base, size );
1777 return 1; /* stop enumeration since the list has changed */
1778 }
1779
1780 /***********************************************************************
1781 * virtual_release_address_space
1782 *
1783 * Release some address space once we have loaded and initialized the app.
1784 */
1785 void virtual_release_address_space( BOOL free_high_mem )
1786 {
1787 struct free_range range;
1788 sigset_t sigset;
1789
1790 if (user_space_limit == address_space_limit) return; /* no need to free anything */
1791
1792 server_enter_uninterrupted_section( &csVirtual, &sigset );
1793
1794 /* no large address space on win9x */
1795 if (free_high_mem && NtCurrentTeb()->Peb->OSPlatformId == VER_PLATFORM_WIN32_NT)
1796 {
1797 range.base = (char *)0x82000000;
1798 range.limit = address_space_limit;
1799 while (wine_mmap_enum_reserved_areas( free_reserved_memory, &range, 1 )) /* nothing */;
1800 user_space_limit = working_set_limit = address_space_limit;
1801 }
1802 else
1803 {
1804 #ifndef __APPLE__ /* dyld doesn't support parts of the WINE_DOS segment being unmapped */
1805 range.base = (char *)0x20000000;
1806 range.limit = (char *)0x7f000000;
1807 while (wine_mmap_enum_reserved_areas( free_reserved_memory, &range, 0 )) /* nothing */;
1808 #endif
1809 }
1810
1811 server_leave_uninterrupted_section( &csVirtual, &sigset );
1812 }
1813
1814
1815 /***********************************************************************
1816 * NtAllocateVirtualMemory (NTDLL.@)
1817 * ZwAllocateVirtualMemory (NTDLL.@)
1818 */
1819 NTSTATUS WINAPI NtAllocateVirtualMemory( HANDLE process, PVOID *ret, ULONG zero_bits,
1820 SIZE_T *size_ptr, ULONG type, ULONG protect )
1821 {
1822 void *base;
1823 unsigned int vprot;
1824 SIZE_T size = *size_ptr;
1825 SIZE_T mask = get_mask( zero_bits );
1826 NTSTATUS status = STATUS_SUCCESS;
1827 struct file_view *view;
1828 sigset_t sigset;
1829
1830 TRACE("%p %p %08lx %x %08x\n", process, *ret, size, type, protect );
1831
1832 if (!size) return STATUS_INVALID_PARAMETER;
1833
1834 if (process != NtCurrentProcess())
1835 {
1836 apc_call_t call;
1837 apc_result_t result;
1838
1839 memset( &call, 0, sizeof(call) );
1840
1841 call.virtual_alloc.type = APC_VIRTUAL_ALLOC;
1842 call.virtual_alloc.addr = wine_server_client_ptr( *ret );
1843 call.virtual_alloc.size = *size_ptr;
1844 call.virtual_alloc.zero_bits = zero_bits;
1845 call.virtual_alloc.op_type = type;
1846 call.virtual_alloc.prot = protect;
1847 status = NTDLL_queue_process_apc( process, &call, &result );
1848 if (status != STATUS_SUCCESS) return status;
1849
1850 if (result.virtual_alloc.status == STATUS_SUCCESS)
1851 {
1852 *ret = wine_server_get_ptr( result.virtual_alloc.addr );
1853 *size_ptr = result.virtual_alloc.size;
1854 }
1855 return result.virtual_alloc.status;
1856 }
1857
1858 /* Round parameters to a page boundary */
1859
1860 if (is_beyond_limit( 0, size, working_set_limit )) return STATUS_WORKING_SET_LIMIT_RANGE;
1861
1862 if ((status = get_vprot_flags( protect, &vprot ))) return status;
1863 vprot |= VPROT_VALLOC;
1864 if (type & MEM_COMMIT) vprot |= VPROT_COMMITTED;
1865
1866 if (*ret)
1867 {
1868 if (type & MEM_RESERVE) /* Round down to 64k boundary */
1869 base = ROUND_ADDR( *ret, mask );
1870 else
1871 base = ROUND_ADDR( *ret, page_mask );
1872 size = (((UINT_PTR)*ret + size + page_mask) & ~page_mask) - (UINT_PTR)base;
1873
1874 /* address 1 is magic to mean DOS area */
1875 if (!base && *ret == (void *)1 && size == 0x110000)
1876 {
1877 server_enter_uninterrupted_section( &csVirtual, &sigset );
1878 status = allocate_dos_memory( &view, vprot );
1879 if (status == STATUS_SUCCESS)
1880 {
1881 *ret = view->base;
1882 *size_ptr = view->size;
1883 }
1884 server_leave_uninterrupted_section( &csVirtual, &sigset );
1885 return status;
1886 }
1887
1888 /* disallow low 64k, wrap-around and kernel space */
1889 if (((char *)base < (char *)0x10000) ||
1890 ((char *)base + size < (char *)base) ||
1891 is_beyond_limit( base, size, address_space_limit ))
1892 return STATUS_INVALID_PARAMETER;
1893 }
1894 else
1895 {
1896 base = NULL;
1897 size = (size + page_mask) & ~page_mask;
1898 }
1899
1900 /* Compute the alloc type flags */
1901
1902 if (!(type & (MEM_COMMIT | MEM_RESERVE | MEM_RESET)) ||
1903 (type & ~(MEM_COMMIT | MEM_RESERVE | MEM_TOP_DOWN | MEM_WRITE_WATCH | MEM_RESET)))
1904 {
1905 WARN("called with wrong alloc type flags (%08x) !\n", type);
1906 return STATUS_INVALID_PARAMETER;
1907 }
1908
1909 /* Reserve the memory */
1910
1911 if (use_locks) server_enter_uninterrupted_section( &csVirtual, &sigset );
1912
1913 if ((type & MEM_RESERVE) || !base)
1914 {
1915 if (type & MEM_WRITE_WATCH) vprot |= VPROT_WRITEWATCH;
1916 status = map_view( &view, base, size, mask, type & MEM_TOP_DOWN, vprot );
1917 if (status == STATUS_SUCCESS) base = view->base;
1918 }
1919 else if (type & MEM_RESET)
1920 {
1921 if (!(view = VIRTUAL_FindView( base, size ))) status = STATUS_NOT_MAPPED_VIEW;
1922 else madvise( base, size, MADV_DONTNEED );
1923 }
1924 else /* commit the pages */
1925 {
1926 if (!(view = VIRTUAL_FindView( base, size ))) status = STATUS_NOT_MAPPED_VIEW;
1927 else if (!VIRTUAL_SetProt( view, base, size, vprot )) status = STATUS_ACCESS_DENIED;
1928 else if (view->mapping && !(view->protect & VPROT_COMMITTED))
1929 {
1930 SERVER_START_REQ( add_mapping_committed_range )
1931 {
1932 req->handle = wine_server_obj_handle( view->mapping );
1933 req->offset = (char *)base - (char *)view->base;
1934 req->size = size;
1935 wine_server_call( req );
1936 }
1937 SERVER_END_REQ;
1938 }
1939 }
1940
1941 if (use_locks) server_leave_uninterrupted_section( &csVirtual, &sigset );
1942
1943 if (status == STATUS_SUCCESS)
1944 {
1945 *ret = base;
1946 *size_ptr = size;
1947 }
1948 return status;
1949 }
1950
1951
1952 /***********************************************************************
1953 * NtFreeVirtualMemory (NTDLL.@)
1954 * ZwFreeVirtualMemory (NTDLL.@)
1955 */
1956 NTSTATUS WINAPI NtFreeVirtualMemory( HANDLE process, PVOID *addr_ptr, SIZE_T *size_ptr, ULONG type )
1957 {
1958 struct file_view *view;
1959 char *base;
1960 sigset_t sigset;
1961 NTSTATUS status = STATUS_SUCCESS;
1962 LPVOID addr = *addr_ptr;
1963 SIZE_T size = *size_ptr;
1964
1965 TRACE("%p %p %08lx %x\n", process, addr, size, type );
1966
1967 if (process != NtCurrentProcess())
1968 {
1969 apc_call_t call;
1970 apc_result_t result;
1971
1972 memset( &call, 0, sizeof(call) );
1973
1974 call.virtual_free.type = APC_VIRTUAL_FREE;
1975 call.virtual_free.addr = wine_server_client_ptr( addr );
1976 call.virtual_free.size = size;
1977 call.virtual_free.op_type = type;
1978 status = NTDLL_queue_process_apc( process, &call, &result );
1979 if (status != STATUS_SUCCESS) return status;
1980
1981 if (result.virtual_free.status == STATUS_SUCCESS)
1982 {
1983 *addr_ptr = wine_server_get_ptr( result.virtual_free.addr );
1984 *size_ptr = result.virtual_free.size;
1985 }
1986 return result.virtual_free.status;
1987 }
1988
1989 /* Fix the parameters */
1990
1991 size = ROUND_SIZE( addr, size );
1992 base = ROUND_ADDR( addr, page_mask );
1993
1994 /* avoid freeing the DOS area when a broken app passes a NULL pointer */
1995 if (!base) return STATUS_INVALID_PARAMETER;
1996
1997 server_enter_uninterrupted_section( &csVirtual, &sigset );
1998
1999 if (!(view = VIRTUAL_FindView( base, size )) || !(view->protect & VPROT_VALLOC))
2000 {
2001 status = STATUS_INVALID_PARAMETER;
2002 }
2003 else if (type == MEM_RELEASE)
2004 {
2005 /* Free the pages */
2006
2007 if (size || (base != view->base)) status = STATUS_INVALID_PARAMETER;
2008 else
2009 {
2010 delete_view( view );
2011 *addr_ptr = base;
2012 *size_ptr = size;
2013 }
2014 }
2015 else if (type == MEM_DECOMMIT)
2016 {
2017 status = decommit_pages( view, base - (char *)view->base, size );
2018 if (status == STATUS_SUCCESS)
2019 {
2020 *addr_ptr = base;
2021 *size_ptr = size;
2022 }
2023 }
2024 else
2025 {
2026 WARN("called with wrong free type flags (%08x) !\n", type);
2027 status = STATUS_INVALID_PARAMETER;
2028 }
2029
2030 server_leave_uninterrupted_section( &csVirtual, &sigset );
2031 return status;
2032 }
2033
2034
2035 /***********************************************************************
2036 * NtProtectVirtualMemory (NTDLL.@)
2037 * ZwProtectVirtualMemory (NTDLL.@)
2038 */
2039 NTSTATUS WINAPI NtProtectVirtualMemory( HANDLE process, PVOID *addr_ptr, SIZE_T *size_ptr,
2040 ULONG new_prot, ULONG *old_prot )
2041 {
2042 struct file_view *view;
2043 sigset_t sigset;
2044 NTSTATUS status = STATUS_SUCCESS;
2045 char *base;
2046 BYTE vprot;
2047 unsigned int new_vprot;
2048 SIZE_T size = *size_ptr;
2049 LPVOID addr = *addr_ptr;
2050
2051 TRACE("%p %p %08lx %08x\n", process, addr, size, new_prot );
2052
2053 if (process != NtCurrentProcess())
2054 {
2055 apc_call_t call;
2056 apc_result_t result;
2057
2058 memset( &call, 0, sizeof(call) );
2059
2060 call.virtual_protect.type = APC_VIRTUAL_PROTECT;
2061 call.virtual_protect.addr = wine_server_client_ptr( addr );
2062 call.virtual_protect.size = size;
2063 call.virtual_protect.prot = new_prot;
2064 status = NTDLL_queue_process_apc( process, &call, &result );
2065 if (status != STATUS_SUCCESS) return status;
2066
2067 if (result.virtual_protect.status == STATUS_SUCCESS)
2068 {
2069 *addr_ptr = wine_server_get_ptr( result.virtual_protect.addr );
2070 *size_ptr = result.virtual_protect.size;
2071 if (old_prot) *old_prot = result.virtual_protect.prot;
2072 }
2073 return result.virtual_protect.status;
2074 }
2075
2076 /* Fix the parameters */
2077
2078 size = ROUND_SIZE( addr, size );
2079 base = ROUND_ADDR( addr, page_mask );
2080 if ((status = get_vprot_flags( new_prot, &new_vprot ))) return status;
2081 new_vprot |= VPROT_COMMITTED;
2082
2083 server_enter_uninterrupted_section( &csVirtual, &sigset );
2084
2085 if (!(view = VIRTUAL_FindView( base, size )))
2086 {
2087 status = STATUS_INVALID_PARAMETER;
2088 }
2089 else
2090 {
2091 /* Make sure all the pages are committed */
2092 if (get_committed_size( view, base, &vprot ) >= size && (vprot & VPROT_COMMITTED))
2093 {
2094 if (old_prot) *old_prot = VIRTUAL_GetWin32Prot( vprot );
2095 if (!VIRTUAL_SetProt( view, base, size, new_vprot )) status = STATUS_ACCESS_DENIED;
2096 }
2097 else status = STATUS_NOT_COMMITTED;
2098 }
2099 server_leave_uninterrupted_section( &csVirtual, &sigset );
2100
2101 if (status == STATUS_SUCCESS)
2102 {
2103 *addr_ptr = base;
2104 *size_ptr = size;
2105 }
2106 return status;
2107 }
2108
2109
2110 /* retrieve state for a free memory area; callback for wine_mmap_enum_reserved_areas */
2111 static int get_free_mem_state_callback( void *start, size_t size, void *arg )
2112 {
2113 MEMORY_BASIC_INFORMATION *info = arg;
2114 void *end = (char *)start + size;
2115
2116 if ((char *)info->BaseAddress + info->RegionSize < (char *)start) return 0;
2117
2118 if (info->BaseAddress >= end)
2119 {
2120 if (info->AllocationBase < end) info->AllocationBase = end;
2121 return 0;
2122 }
2123
2124 if (info->BaseAddress >= start || start <= address_space_start)
2125 {
2126 /* it's a real free area */
2127 info->State = MEM_FREE;
2128 info->Protect = PAGE_NOACCESS;
2129 info->AllocationBase = 0;
2130 info->AllocationProtect = 0;
2131 info->Type = 0;
2132 if ((char *)info->BaseAddress + info->RegionSize > (char *)end)
2133 info->RegionSize = (char *)end - (char *)info->BaseAddress;
2134 }
2135 else /* outside of the reserved area, pretend it's allocated */
2136 {
2137 info->RegionSize = (char *)start - (char *)info->BaseAddress;
2138 info->State = MEM_RESERVE;
2139 info->Protect = PAGE_NOACCESS;
2140 info->AllocationProtect = PAGE_NOACCESS;
2141 info->Type = MEM_PRIVATE;
2142 }
2143 return 1;
2144 }
2145
2146 #define UNIMPLEMENTED_INFO_CLASS(c) \
2147 case c: \
2148 FIXME("(process=%p,addr=%p) Unimplemented information class: " #c "\n", process, addr); \
2149 return STATUS_INVALID_INFO_CLASS
2150
2151 /***********************************************************************
2152 * NtQueryVirtualMemory (NTDLL.@)
2153 * ZwQueryVirtualMemory (NTDLL.@)
2154 */
2155 NTSTATUS WINAPI NtQueryVirtualMemory( HANDLE process, LPCVOID addr,
2156 MEMORY_INFORMATION_CLASS info_class, PVOID buffer,
2157 SIZE_T len, SIZE_T *res_len )
2158 {
2159 struct file_view *view;
2160 char *base, *alloc_base = 0;
2161 struct list *ptr;
2162 SIZE_T size = 0;
2163 MEMORY_BASIC_INFORMATION *info = buffer;
2164 sigset_t sigset;
2165
2166 if (info_class != MemoryBasicInformation)
2167 {
2168 switch(info_class)
2169 {
2170 UNIMPLEMENTED_INFO_CLASS(MemoryWorkingSetList);
2171 UNIMPLEMENTED_INFO_CLASS(MemorySectionName);
2172 UNIMPLEMENTED_INFO_CLASS(MemoryBasicVlmInformation);
2173
2174 default:
2175 FIXME("(%p,%p,info_class=%d,%p,%ld,%p) Unknown information class\n",
2176 process, addr, info_class, buffer, len, res_len);
2177 return STATUS_INVALID_INFO_CLASS;
2178 }
2179 }
2180
2181 if (process != NtCurrentProcess())
2182 {
2183 NTSTATUS status;
2184 apc_call_t call;
2185 apc_result_t result;
2186
2187 memset( &call, 0, sizeof(call) );
2188
2189 call.virtual_query.type = APC_VIRTUAL_QUERY;
2190 call.virtual_query.addr = wine_server_client_ptr( addr );
2191 status = NTDLL_queue_process_apc( process, &call, &result );
2192 if (status != STATUS_SUCCESS) return status;
2193
2194 if (result.virtual_query.status == STATUS_SUCCESS)
2195 {
2196 info->BaseAddress = wine_server_get_ptr( result.virtual_query.base );
2197 info->AllocationBase = wine_server_get_ptr( result.virtual_query.alloc_base );
2198 info->RegionSize = result.virtual_query.size;
2199 info->Protect = result.virtual_query.prot;
2200 info->AllocationProtect = result.virtual_query.alloc_prot;
2201 info->State = (DWORD)result.virtual_query.state << 12;
2202 info->Type = (DWORD)result.virtual_query.alloc_type << 16;
2203 if (info->RegionSize != result.virtual_query.size) /* truncated */
2204 return STATUS_INVALID_PARAMETER; /* FIXME */
2205 if (res_len) *res_len = sizeof(*info);
2206 }
2207 return result.virtual_query.status;
2208 }
2209
2210 base = ROUND_ADDR( addr, page_mask );
2211
2212 if (is_beyond_limit( base, 1, working_set_limit )) return STATUS_WORKING_SET_LIMIT_RANGE;
2213
2214 /* Find the view containing the address */
2215
2216 server_enter_uninterrupted_section( &csVirtual, &sigset );
2217 ptr = list_head( &views_list );
2218 for (;;)
2219 {
2220 if (!ptr)
2221 {
2222 size = (char *)working_set_limit - alloc_base;
2223 view = NULL;
2224 break;
2225 }
2226 view = LIST_ENTRY( ptr, struct file_view, entry );
2227 if ((char *)view->base > base)
2228 {
2229 size = (char *)view->base - alloc_base;
2230 view = NULL;
2231 break;
2232 }
2233 if ((char *)view->base + view->size > base)
2234 {
2235 alloc_base = view->base;
2236 size = view->size;
2237 break;
2238 }
2239 alloc_base = (char *)view->base + view->size;
2240 ptr = list_next( &views_list, ptr );
2241 }
2242
2243 /* Fill the info structure */
2244
2245 info->AllocationBase = alloc_base;
2246 info->BaseAddress = base;
2247 info->RegionSize = size - (base - alloc_base);
2248
2249 if (!view)
2250 {
2251 if (!wine_mmap_enum_reserved_areas( get_free_mem_state_callback, info, 0 ))
2252 {
2253 /* not in a reserved area at all, pretend it's allocated */
2254 #ifdef __i386__
2255 if (base >= (char *)address_space_start)
2256 {
2257 info->State = MEM_RESERVE;
2258 info->Protect = PAGE_NOACCESS;
2259 info->AllocationProtect = PAGE_NOACCESS;
2260 info->Type = MEM_PRIVATE;
2261 }
2262 else
2263 #endif
2264 {
2265 info->State = MEM_FREE;
2266 info->Protect = PAGE_NOACCESS;
2267 info->AllocationBase = 0;
2268 info->AllocationProtect = 0;
2269 info->Type = 0;
2270 }
2271 }
2272 }
2273 else
2274 {
2275 BYTE vprot;
2276 SIZE_T range_size = get_committed_size( view, base, &vprot );
2277
2278 info->State = (vprot & VPROT_COMMITTED) ? MEM_COMMIT : MEM_RESERVE;
2279 info->Protect = (vprot & VPROT_COMMITTED) ? VIRTUAL_GetWin32Prot( vprot ) : 0;
2280 info->AllocationBase = alloc_base;
2281 info->AllocationProtect = VIRTUAL_GetWin32Prot( view->protect );
2282 if (view->protect & VPROT_IMAGE) info->Type = MEM_IMAGE;
2283 else if (view->protect & VPROT_VALLOC) info->Type = MEM_PRIVATE;
2284 else info->Type = MEM_MAPPED;
2285 for (size = base - alloc_base; size < base + range_size - alloc_base; size += page_size)
2286 if ((view->prot[size >> page_shift] ^ vprot) & ~VPROT_WRITEWATCH) break;
2287 info->RegionSize = size - (base - alloc_base);
2288 }
2289 server_leave_uninterrupted_section( &csVirtual, &sigset );
2290
2291 if (res_len) *res_len = sizeof(*info);
2292 return STATUS_SUCCESS;
2293 }
2294
2295
2296 /***********************************************************************
2297 * NtLockVirtualMemory (NTDLL.@)
2298 * ZwLockVirtualMemory (NTDLL.@)
2299 */
2300 NTSTATUS WINAPI NtLockVirtualMemory( HANDLE process, PVOID *addr, SIZE_T *size, ULONG unknown )
2301 {
2302 NTSTATUS status = STATUS_SUCCESS;
2303
2304 if (process != NtCurrentProcess())
2305 {
2306 apc_call_t call;
2307 apc_result_t result;
2308
2309 memset( &call, 0, sizeof(call) );
2310
2311 call.virtual_lock.type = APC_VIRTUAL_LOCK;
2312 call.virtual_lock.addr = wine_server_client_ptr( *addr );
2313 call.virtual_lock.size = *size;
2314 status = NTDLL_queue_process_apc( process, &call, &result );
2315 if (status != STATUS_SUCCESS) return status;
2316
2317 if (result.virtual_lock.status == STATUS_SUCCESS)
2318 {
2319 *addr = wine_server_get_ptr( result.virtual_lock.addr );
2320 *size = result.virtual_lock.size;
2321 }
2322 return result.virtual_lock.status;
2323 }
2324
2325 *size = ROUND_SIZE( *addr, *size );
2326 *addr = ROUND_ADDR( *addr, page_mask );
2327
2328 if (mlock( *addr, *size )) status = STATUS_ACCESS_DENIED;
2329 return status;
2330 }
2331
2332
2333 /***********************************************************************
2334 * NtUnlockVirtualMemory (NTDLL.@)
2335 * ZwUnlockVirtualMemory (NTDLL.@)
2336 */
2337 NTSTATUS WINAPI NtUnlockVirtualMemory( HANDLE process, PVOID *addr, SIZE_T *size, ULONG unknown )
2338 {
2339 NTSTATUS status = STATUS_SUCCESS;
2340
2341 if (process != NtCurrentProcess())
2342 {
2343 apc_call_t call;
2344 apc_result_t result;
2345
2346 memset( &call, 0, sizeof(call) );
2347
2348 call.virtual_unlock.type = APC_VIRTUAL_UNLOCK;
2349 call.virtual_unlock.addr = wine_server_client_ptr( *addr );
2350 call.virtual_unlock.size = *size;
2351 status = NTDLL_queue_process_apc( process, &call, &result );
2352 if (status != STATUS_SUCCESS) return status;
2353
2354 if (result.virtual_unlock.status == STATUS_SUCCESS)
2355 {
2356 *addr = wine_server_get_ptr( result.virtual_unlock.addr );
2357 *size = result.virtual_unlock.size;
2358 }
2359 return result.virtual_unlock.status;
2360 }
2361
2362 *size = ROUND_SIZE( *addr, *size );
2363 *addr = ROUND_ADDR( *addr, page_mask );
2364
2365 if (munlock( *addr, *size )) status = STATUS_ACCESS_DENIED;
2366 return status;
2367 }
2368
2369
2370 /***********************************************************************
2371 * NtCreateSection (NTDLL.@)
2372 * ZwCreateSection (NTDLL.@)
2373 */
2374 NTSTATUS WINAPI NtCreateSection( HANDLE *handle, ACCESS_MASK access, const OBJECT_ATTRIBUTES *attr,
2375 const LARGE_INTEGER *size, ULONG protect,
2376 ULONG sec_flags, HANDLE file )
2377 {
2378 NTSTATUS ret;
2379 unsigned int vprot;
2380 DWORD len = (attr && attr->ObjectName) ? attr->ObjectName->Length : 0;
2381 struct security_descriptor *sd = NULL;
2382 struct object_attributes objattr;
2383
2384 /* Check parameters */
2385
2386 if (len > MAX_PATH*sizeof(WCHAR)) return STATUS_NAME_TOO_LONG;
2387
2388 if ((ret = get_vprot_flags( protect, &vprot ))) return ret;
2389
2390 objattr.rootdir = wine_server_obj_handle( attr ? attr->RootDirectory : 0 );
2391 objattr.sd_len = 0;
2392 objattr.name_len = len;
2393 if (attr)
2394 {
2395 ret = NTDLL_create_struct_sd( attr->SecurityDescriptor, &sd, &objattr.sd_len );
2396 if (ret != STATUS_SUCCESS) return ret;
2397 }
2398
2399 if (!(sec_flags & SEC_RESERVE)) vprot |= VPROT_COMMITTED;
2400 if (sec_flags & SEC_NOCACHE) vprot |= VPROT_NOCACHE;
2401 if (sec_flags & SEC_IMAGE) vprot |= VPROT_IMAGE;
2402
2403 /* Create the server object */
2404
2405 SERVER_START_REQ( create_mapping )
2406 {
2407 req->access = access;
2408 req->attributes = (attr) ? attr->Attributes : 0;
2409 req->file_handle = wine_server_obj_handle( file );
2410 req->size = size ? size->QuadPart : 0;
2411 req->protect = vprot;
2412 wine_server_add_data( req, &objattr, sizeof(objattr) );
2413 if (objattr.sd_len) wine_server_add_data( req, sd, objattr.sd_len );
2414 if (len) wine_server_add_data( req, attr->ObjectName->Buffer, len );
2415 ret = wine_server_call( req );
2416 *handle = wine_server_ptr_handle( reply->handle );
2417 }
2418 SERVER_END_REQ;
2419
2420 NTDLL_free_struct_sd( sd );
2421
2422 return ret;
2423 }
2424
2425
2426 /***********************************************************************
2427 * NtOpenSection (NTDLL.@)
2428 * ZwOpenSection (NTDLL.@)
2429 */
2430 NTSTATUS WINAPI NtOpenSection( HANDLE *handle, ACCESS_MASK access, const OBJECT_ATTRIBUTES *attr )
2431 {
2432 NTSTATUS ret;
2433 DWORD len = attr->ObjectName->Length;
2434
2435 if (len > MAX_PATH*sizeof(WCHAR)) return STATUS_NAME_TOO_LONG;
2436
2437 SERVER_START_REQ( open_mapping )
2438 {
2439 req->access = access;
2440 req->attributes = attr->Attributes;
2441 req->rootdir = wine_server_obj_handle( attr->RootDirectory );
2442 wine_server_add_data( req, attr->ObjectName->Buffer, len );
2443 if (!(ret = wine_server_call( req ))) *handle = wine_server_ptr_handle( reply->handle );
2444 }
2445 SERVER_END_REQ;
2446 return ret;
2447 }
2448
2449
2450 /***********************************************************************
2451 * NtMapViewOfSection (NTDLL.@)
2452 * ZwMapViewOfSection (NTDLL.@)
2453 */
2454 NTSTATUS WINAPI NtMapViewOfSection( HANDLE handle, HANDLE process, PVOID *addr_ptr, ULONG zero_bits,
2455 SIZE_T commit_size, const LARGE_INTEGER *offset_ptr, SIZE_T *size_ptr,
2456 SECTION_INHERIT inherit, ULONG alloc_type, ULONG protect )
2457 {
2458 NTSTATUS res;
2459 mem_size_t full_size;
2460 ACCESS_MASK access;
2461 SIZE_T size, mask = get_mask( zero_bits );
2462 int unix_handle = -1, needs_close;
2463 unsigned int map_vprot, vprot;
2464 void *base;
2465 struct file_view *view;
2466 DWORD header_size;
2467 HANDLE dup_mapping, shared_file;
2468 LARGE_INTEGER offset;
2469 sigset_t sigset;
2470
2471 offset.QuadPart = offset_ptr ? offset_ptr->QuadPart : 0;
2472
2473 TRACE("handle=%p process=%p addr=%p off=%x%08x size=%lx access=%x\n",
2474 handle, process, *addr_ptr, offset.u.HighPart, offset.u.LowPart, *size_ptr, protect );
2475
2476 /* Check parameters */
2477
2478 if ((offset.u.LowPart & mask) || (*addr_ptr && ((UINT_PTR)*addr_ptr & mask)))
2479 return STATUS_INVALID_PARAMETER;
2480
2481 switch(protect)
2482 {
2483 case PAGE_NOACCESS:
2484 access = 0;
2485 break;
2486 case PAGE_READWRITE:
2487 case PAGE_EXECUTE_READWRITE:
2488 access = SECTION_MAP_WRITE;
2489 break;
2490 case PAGE_READONLY:
2491 case PAGE_WRITECOPY:
2492 case PAGE_EXECUTE:
2493 case PAGE_EXECUTE_READ:
2494 case PAGE_EXECUTE_WRITECOPY:
2495 access = SECTION_MAP_READ;
2496 break;
2497 default:
2498 return STATUS_INVALID_PARAMETER;
2499 }
2500
2501 if (process != NtCurrentProcess())
2502 {
2503 apc_call_t call;
2504 apc_result_t result;
2505
2506 memset( &call, 0, sizeof(call) );
2507
2508 call.map_view.type = APC_MAP_VIEW;
2509 call.map_view.handle = wine_server_obj_handle( handle );
2510 call.map_view.addr = wine_server_client_ptr( *addr_ptr );
2511 call.map_view.size = *size_ptr;
2512 call.map_view.offset = offset.QuadPart;
2513 call.map_view.zero_bits = zero_bits;
2514 call.map_view.alloc_type = alloc_type;
2515 call.map_view.prot = protect;
2516 res = NTDLL_queue_process_apc( process, &call, &result );
2517 if (res != STATUS_SUCCESS) return res;
2518
2519 if ((NTSTATUS)result.map_view.status >= 0)
2520 {
2521 *addr_ptr = wine_server_get_ptr( result.map_view.addr );
2522 *size_ptr = result.map_view.size;
2523 }
2524 return result.map_view.status;
2525 }
2526
2527 SERVER_START_REQ( get_mapping_info )
2528 {
2529 req->handle = wine_server_obj_handle( handle );
2530 req->access = access;
2531 res = wine_server_call( req );
2532 map_vprot = reply->protect;
2533 base = wine_server_get_ptr( reply->base );
2534 full_size = reply->size;
2535 header_size = reply->header_size;
2536 dup_mapping = wine_server_ptr_handle( reply->mapping );
2537 shared_file = wine_server_ptr_handle( reply->shared_file );
2538 if ((ULONG_PTR)base != reply->base) base = NULL;
2539 }
2540 SERVER_END_REQ;
2541 if (res) return res;
2542
2543 if ((res = server_get_unix_fd( handle, 0, &unix_handle, &needs_close, NULL, NULL ))) goto done;
2544
2545 if (map_vprot & VPROT_IMAGE)
2546 {
2547 size = full_size;
2548 if (size != full_size) /* truncated */
2549 {
2550 WARN( "Modules larger than 4Gb (%s) not supported\n", wine_dbgstr_longlong(full_size) );
2551 res = STATUS_INVALID_PARAMETER;
2552 goto done;
2553 }
2554 if (shared_file)
2555 {
2556 int shared_fd, shared_needs_close;
2557
2558 if ((res = server_get_unix_fd( shared_file, FILE_READ_DATA|FILE_WRITE_DATA,
2559 &shared_fd, &shared_needs_close, NULL, NULL ))) goto done;
2560 res = map_image( handle, unix_handle, base, size, mask, header_size,
2561 shared_fd, dup_mapping, addr_ptr );
2562 if (shared_needs_close) close( shared_fd );
2563 NtClose( shared_file );
2564 }
2565 else
2566 {
2567 res = map_image( handle, unix_handle, base, size, mask, header_size,
2568 -1, dup_mapping, addr_ptr );
2569 }
2570 if (needs_close) close( unix_handle );
2571 if (res >= 0) *size_ptr = size;
2572 return res;
2573 }
2574
2575 res = STATUS_INVALID_PARAMETER;
2576 if (offset.QuadPart >= full_size) goto done;
2577 if (*size_ptr)
2578 {
2579 if (*size_ptr > full_size - offset.QuadPart) goto done;
2580 size = ROUND_SIZE( offset.u.LowPart, *size_ptr );
2581 if (size < *size_ptr) goto done; /* wrap-around */
2582 }
2583 else
2584 {
2585 size = full_size - offset.QuadPart;
2586 if (size != full_size - offset.QuadPart) /* truncated */
2587 {
2588 WARN( "Files larger than 4Gb (%s) not supported on this platform\n",
2589 wine_dbgstr_longlong(full_size) );
2590 goto done;
2591 }
2592 }
2593
2594 /* Reserve a properly aligned area */
2595
2596 server_enter_uninterrupted_section( &csVirtual, &sigset );
2597
2598 get_vprot_flags( protect, &vprot );
2599 vprot |= (map_vprot & VPROT_COMMITTED);
2600 res = map_view( &view, *addr_ptr, size, mask, FALSE, vprot );
2601 if (res)
2602 {
2603 server_leave_uninterrupted_section( &csVirtual, &sigset );
2604 goto done;
2605 }
2606
2607 /* Map the file */
2608
2609 TRACE("handle=%p size=%lx offset=%x%08x\n",
2610 handle, size, offset.u.HighPart, offset.u.LowPart );
2611
2612 res = map_file_into_view( view, unix_handle, 0, size, offset.QuadPart, vprot, !dup_mapping );
2613 if (res == STATUS_SUCCESS)
2614 {
2615 *addr_ptr = view->base;
2616 *size_ptr = size;
2617 view->mapping = dup_mapping;
2618 dup_mapping = 0; /* don't close it */
2619 }
2620 else
2621 {
2622 ERR( "map_file_into_view %p %lx %x%08x failed\n",
2623 view->base, size, offset.u.HighPart, offset.u.LowPart );
2624 delete_view( view );
2625 }
2626
2627 server_leave_uninterrupted_section( &csVirtual, &sigset );
2628
2629 done:
2630 if (dup_mapping) NtClose( dup_mapping );
2631 if (needs_close) close( unix_handle );
2632 return res;
2633 }
2634
2635
2636 /***********************************************************************
2637 * NtUnmapViewOfSection (NTDLL.@)
2638 * ZwUnmapViewOfSection (NTDLL.@)
2639 */
2640 NTSTATUS WINAPI NtUnmapViewOfSection( HANDLE process, PVOID addr )
2641 {
2642 struct file_view *view;
2643 NTSTATUS status = STATUS_NOT_MAPPED_VIEW;
2644 sigset_t sigset;
2645 void *base = ROUND_ADDR( addr, page_mask );
2646
2647 if (process != NtCurrentProcess())
2648 {
2649 apc_call_t call;
2650 apc_result_t result;
2651
2652 memset( &call, 0, sizeof(call) );
2653
2654 call.unmap_view.type = APC_UNMAP_VIEW;
2655 call.unmap_view.addr = wine_server_client_ptr( addr );
2656 status = NTDLL_queue_process_apc( process, &call, &result );
2657 if (status == STATUS_SUCCESS) status = result.unmap_view.status;
2658 return status;
2659 }
2660
2661 server_enter_uninterrupted_section( &csVirtual, &sigset );
2662 if ((view = VIRTUAL_FindView( base, 0 )) && (base == view->base) && !(view->protect & VPROT_VALLOC))
2663 {
2664 delete_view( view );
2665 status = STATUS_SUCCESS;
2666 }
2667 server_leave_uninterrupted_section( &csVirtual, &sigset );
2668 return status;
2669 }
2670
2671
2672 /***********************************************************************
2673 * NtFlushVirtualMemory (NTDLL.@)
2674 * ZwFlushVirtualMemory (NTDLL.@)
2675 */
2676 NTSTATUS WINAPI NtFlushVirtualMemory( HANDLE process, LPCVOID *addr_ptr,
2677 SIZE_T *size_ptr, ULONG unknown )
2678 {
2679 struct file_view *view;
2680 NTSTATUS status = STATUS_SUCCESS;
2681 sigset_t sigset;
2682 void *addr = ROUND_ADDR( *addr_ptr, page_mask );
2683
2684 if (process != NtCurrentProcess())
2685 {
2686 apc_call_t call;
2687 apc_result_t result;
2688
2689 memset( &call, 0, sizeof(call) );
2690
2691 call.virtual_flush.type = APC_VIRTUAL_FLUSH;
2692 call.virtual_flush.addr = wine_server_client_ptr( addr );
2693 call.virtual_flush.size = *size_ptr;
2694 status = NTDLL_queue_process_apc( process, &call, &result );
2695 if (status != STATUS_SUCCESS) return status;
2696
2697 if (result.virtual_flush.status == STATUS_SUCCESS)
2698 {
2699 *addr_ptr = wine_server_get_ptr( result.virtual_flush.addr );
2700 *size_ptr = result.virtual_flush.size;
2701 }
2702 return result.virtual_flush.status;
2703 }
2704
2705 server_enter_uninterrupted_section( &csVirtual, &sigset );
2706 if (!(view = VIRTUAL_FindView( addr, *size_ptr ))) status = STATUS_INVALID_PARAMETER;
2707 else
2708 {
2709 if (!*size_ptr) *size_ptr = view->size;
2710 *addr_ptr = addr;
2711 if (msync( addr, *size_ptr, MS_SYNC )) status = STATUS_NOT_MAPPED_DATA;
2712 }
2713 server_leave_uninterrupted_section( &csVirtual, &sigset );
2714 return status;
2715 }
2716
2717
2718 /***********************************************************************
2719 * NtGetWriteWatch (NTDLL.@)
2720 * ZwGetWriteWatch (NTDLL.@)
2721 */
2722 NTSTATUS WINAPI NtGetWriteWatch( HANDLE process, ULONG flags, PVOID base, SIZE_T size, PVOID *addresses,
2723 ULONG_PTR *count, ULONG *granularity )
2724 {
2725 struct file_view *view;
2726 NTSTATUS status = STATUS_SUCCESS;
2727 sigset_t sigset;
2728
2729 size = ROUND_SIZE( base, size );
2730 base = ROUND_ADDR( base, page_mask );
2731
2732 if (!count || !granularity) return STATUS_ACCESS_VIOLATION;
2733 if (!*count || !size) return STATUS_INVALID_PARAMETER;
2734 if (flags & ~WRITE_WATCH_FLAG_RESET) return STATUS_INVALID_PARAMETER;
2735
2736 if (!addresses) return STATUS_ACCESS_VIOLATION;
2737
2738 TRACE( "%p %x %p-%p %p %lu\n", process, flags, base, (char *)base + size,
2739 addresses, *count );
2740
2741 server_enter_uninterrupted_section( &csVirtual, &sigset );
2742
2743 if ((view = VIRTUAL_FindView( base, size )) && (view->protect & VPROT_WRITEWATCH))
2744 {
2745 ULONG_PTR pos = 0;
2746 char *addr = base;
2747 char *end = addr + size;
2748
2749 while (pos < *count && addr < end)
2750 {
2751 BYTE prot = view->prot[(addr - (char *)view->base) >> page_shift];
2752 if (!(prot & VPROT_WRITEWATCH)) addresses[pos++] = addr;
2753 addr += page_size;
2754 }
2755 if (flags & WRITE_WATCH_FLAG_RESET) reset_write_watches( view, base, addr - (char *)base );
2756 *count = pos;
2757 *granularity = page_size;
2758 }
2759 else status = STATUS_INVALID_PARAMETER;
2760
2761 server_leave_uninterrupted_section( &csVirtual, &sigset );
2762 return status;
2763 }
2764
2765
2766 /***********************************************************************
2767 * NtResetWriteWatch (NTDLL.@)
2768 * ZwResetWriteWatch (NTDLL.@)
2769 */
2770 NTSTATUS WINAPI NtResetWriteWatch( HANDLE process, PVOID base, SIZE_T size )
2771 {
2772 struct file_view *view;
2773 NTSTATUS status = STATUS_SUCCESS;
2774 sigset_t sigset;
2775
2776 size = ROUND_SIZE( base, size );
2777 base = ROUND_ADDR( base, page_mask );
2778
2779 TRACE( "%p %p-%p\n", process, base, (char *)base + size );
2780
2781 if (!size) return STATUS_INVALID_PARAMETER;
2782
2783 server_enter_uninterrupted_section( &csVirtual, &sigset );
2784
2785 if ((view = VIRTUAL_FindView( base, size )) && (view->protect & VPROT_WRITEWATCH))
2786 reset_write_watches( view, base, size );
2787 else
2788 status = STATUS_INVALID_PARAMETER;
2789
2790 server_leave_uninterrupted_section( &csVirtual, &sigset );
2791 return status;
2792 }
2793
2794
2795 /***********************************************************************
2796 * NtReadVirtualMemory (NTDLL.@)
2797 * ZwReadVirtualMemory (NTDLL.@)
2798 */
2799 NTSTATUS WINAPI NtReadVirtualMemory( HANDLE process, const void *addr, void *buffer,
2800 SIZE_T size, SIZE_T *bytes_read )
2801 {
2802 NTSTATUS status;
2803
2804 if (virtual_check_buffer_for_write( buffer, size ))
2805 {
2806 SERVER_START_REQ( read_process_memory )
2807 {
2808 req->handle = wine_server_obj_handle( process );
2809 req->addr = wine_server_client_ptr( addr );
2810 wine_server_set_reply( req, buffer, size );
2811 if ((status = wine_server_call( req ))) size = 0;
2812 }
2813 SERVER_END_REQ;
2814 }
2815 else
2816 {
2817 status = STATUS_ACCESS_VIOLATION;
2818 size = 0;
2819 }
2820 if (bytes_read) *bytes_read = size;
2821 return status;
2822 }
2823
2824
2825 /***********************************************************************
2826 * NtWriteVirtualMemory (NTDLL.@)
2827 * ZwWriteVirtualMemory (NTDLL.@)
2828 */
2829 NTSTATUS WINAPI NtWriteVirtualMemory( HANDLE process, void *addr, const void *buffer,
2830 SIZE_T size, SIZE_T *bytes_written )
2831 {
2832 NTSTATUS status;
2833
2834 if (virtual_check_buffer_for_read( buffer, size ))
2835 {
2836 SERVER_START_REQ( write_process_memory )
2837 {
2838 req->handle = wine_server_obj_handle( process );
2839 req->addr = wine_server_client_ptr( addr );
2840 wine_server_add_data( req, buffer, size );
2841 if ((status = wine_server_call( req ))) size = 0;
2842 }
2843 SERVER_END_REQ;
2844 }
2845 else
2846 {
2847 status = STATUS_PARTIAL_COPY;
2848 size = 0;
2849 }
2850 if (bytes_written) *bytes_written = size;
2851 return status;
2852 }
2853
2854
2855 /***********************************************************************
2856 * NtAreMappedFilesTheSame (NTDLL.@)
2857 * ZwAreMappedFilesTheSame (NTDLL.@)
2858 */
2859 NTSTATUS WINAPI NtAreMappedFilesTheSame(PVOID addr1, PVOID addr2)
2860 {
2861 struct file_view *view1, *view2;
2862 struct stat st1, st2;
2863 NTSTATUS status;
2864 sigset_t sigset;
2865
2866 TRACE("%p %p\n", addr1, addr2);
2867
2868 server_enter_uninterrupted_section( &csVirtual, &sigset );
2869
2870 view1 = VIRTUAL_FindView( addr1, 0 );
2871 view2 = VIRTUAL_FindView( addr2, 0 );
2872
2873 if (!view1 || !view2)
2874 status = STATUS_INVALID_ADDRESS;
2875 else if ((view1->protect & VPROT_VALLOC) || (view2->protect & VPROT_VALLOC))
2876 status = STATUS_CONFLICTING_ADDRESSES;
2877 else if (!(view1->protect & VPROT_IMAGE) || !(view2->protect & VPROT_IMAGE))
2878 status = STATUS_NOT_SAME_DEVICE;
2879 else if (view1 == view2)
2880 status = STATUS_SUCCESS;
2881 else if (!stat_mapping_file( view1, &st1 ) && !stat_mapping_file( view2, &st2 ) &&
2882 st1.st_dev == st2.st_dev && st1.st_ino == st2.st_ino)
2883 status = STATUS_SUCCESS;
2884 else
2885 status = STATUS_NOT_SAME_DEVICE;
2886
2887 server_leave_uninterrupted_section( &csVirtual, &sigset );
2888 return status;
2889 }
Windows API implementation