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crypt32: Implement getting content and some parameters from a decoded enveloped message.
[wine/multimedia.git] / dlls / ntdll / virtual.c
blob3ce0884f79dd47dc8cdef46952424940186af6b8
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
144 #define ROUND_ADDR(addr,mask) \
145 ((void *)((UINT_PTR)(addr) & ~(UINT_PTR)(mask)))
146
147 #define ROUND_SIZE(addr,size) \
148 (((SIZE_T)(size) + ((UINT_PTR)(addr) & page_mask) + page_mask) & ~page_mask)
149
150 #define VIRTUAL_DEBUG_DUMP_VIEW(view) \
151 do { if (TRACE_ON(virtual)) VIRTUAL_DumpView(view); } while (0)
152
153 #define VIRTUAL_HEAP_SIZE (4*1024*1024)
154
155 static HANDLE virtual_heap;
156 static void *preload_reserve_start;
157 static void *preload_reserve_end;
158 static int use_locks;
159 static int force_exec_prot; /* whether to force PROT_EXEC on all PROT_READ mmaps */
160
161
162 /***********************************************************************
163 * VIRTUAL_GetProtStr
164 */
165 static const char *VIRTUAL_GetProtStr( BYTE prot )
166 {
167 static char buffer[6];
168 buffer[0] = (prot & VPROT_COMMITTED) ? 'c' : '-';
169 buffer[1] = (prot & VPROT_GUARD) ? 'g' : ((prot & VPROT_WRITEWATCH) ? 'H' : '-');
170 buffer[2] = (prot & VPROT_READ) ? 'r' : '-';
171 buffer[3] = (prot & VPROT_WRITECOPY) ? 'W' : ((prot & VPROT_WRITE) ? 'w' : '-');
172 buffer[4] = (prot & VPROT_EXEC) ? 'x' : '-';
173 buffer[5] = 0;
174 return buffer;
175 }
176
177
178 /***********************************************************************
179 * VIRTUAL_GetUnixProt
180 *
181 * Convert page protections to protection for mmap/mprotect.
182 */
183 static int VIRTUAL_GetUnixProt( BYTE vprot )
184 {
185 int prot = 0;
186 if ((vprot & VPROT_COMMITTED) && !(vprot & VPROT_GUARD))
187 {
188 if (vprot & VPROT_READ) prot |= PROT_READ;
189 if (vprot & VPROT_WRITE) prot |= PROT_WRITE;
190 if (vprot & VPROT_WRITECOPY) prot |= PROT_WRITE;
191 if (vprot & VPROT_EXEC) prot |= PROT_EXEC;
192 if (vprot & VPROT_WRITEWATCH) prot &= ~PROT_WRITE;
193 }
194 if (!prot) prot = PROT_NONE;
195 return prot;
196 }
197
198
199 /***********************************************************************
200 * VIRTUAL_DumpView
201 */
202 static void VIRTUAL_DumpView( struct file_view *view )
203 {
204 UINT i, count;
205 char *addr = view->base;
206 BYTE prot = view->prot[0];
207
208 TRACE( "View: %p - %p", addr, addr + view->size - 1 );
209 if (view->protect & VPROT_SYSTEM)
210 TRACE( " (system)\n" );
211 else if (view->protect & VPROT_VALLOC)
212 TRACE( " (valloc)\n" );
213 else if (view->mapping)
214 TRACE( " %p\n", view->mapping );
215 else
216 TRACE( " (anonymous)\n");
217
218 for (count = i = 1; i < view->size >> page_shift; i++, count++)
219 {
220 if (view->prot[i] == prot) continue;
221 TRACE( " %p - %p %s\n",
222 addr, addr + (count << page_shift) - 1, VIRTUAL_GetProtStr(prot) );
223 addr += (count << page_shift);
224 prot = view->prot[i];
225 count = 0;
226 }
227 if (count)
228 TRACE( " %p - %p %s\n",
229 addr, addr + (count << page_shift) - 1, VIRTUAL_GetProtStr(prot) );
230 }
231
232
233 /***********************************************************************
234 * VIRTUAL_Dump
235 */
236 #ifdef WINE_VM_DEBUG
237 static void VIRTUAL_Dump(void)
238 {
239 sigset_t sigset;
240 struct file_view *view;
241
242 TRACE( "Dump of all virtual memory views:\n" );
243 server_enter_uninterrupted_section( &csVirtual, &sigset );
244 LIST_FOR_EACH_ENTRY( view, &views_list, struct file_view, entry )
245 {
246 VIRTUAL_DumpView( view );
247 }
248 server_leave_uninterrupted_section( &csVirtual, &sigset );
249 }
250 #endif
251
252
253 /***********************************************************************
254 * VIRTUAL_FindView
255 *
256 * Find the view containing a given address. The csVirtual section must be held by caller.
257 *
258 * PARAMS
259 * addr [I] Address
260 *
261 * RETURNS
262 * View: Success
263 * NULL: Failure
264 */
265 static struct file_view *VIRTUAL_FindView( const void *addr, size_t size )
266 {
267 struct file_view *view;
268
269 LIST_FOR_EACH_ENTRY( view, &views_list, struct file_view, entry )
270 {
271 if (view->base > addr) break; /* no matching view */
272 if ((const char *)view->base + view->size <= (const char *)addr) continue;
273 if ((const char *)view->base + view->size < (const char *)addr + size) break; /* size too large */
274 if ((const char *)addr + size < (const char *)addr) break; /* overflow */
275 return view;
276 }
277 return NULL;
278 }
279
280
281 /***********************************************************************
282 * get_mask
283 */
284 static inline UINT_PTR get_mask( ULONG zero_bits )
285 {
286 if (!zero_bits) return 0xffff; /* allocations are aligned to 64K by default */
287 if (zero_bits < page_shift) zero_bits = page_shift;
288 return (1 << zero_bits) - 1;
289 }
290
291
292 /***********************************************************************
293 * find_view_range
294 *
295 * Find the first view overlapping at least part of the specified range.
296 * The csVirtual section must be held by caller.
297 */
298 static struct file_view *find_view_range( const void *addr, size_t size )
299 {
300 struct file_view *view;
301
302 LIST_FOR_EACH_ENTRY( view, &views_list, struct file_view, entry )
303 {
304 if ((const char *)view->base >= (const char *)addr + size) break;
305 if ((const char *)view->base + view->size > (const char *)addr) return view;
306 }
307 return NULL;
308 }
309
310
311 /***********************************************************************
312 * find_free_area
313 *
314 * Find a free area between views inside the specified range.
315 * The csVirtual section must be held by caller.
316 */
317 static void *find_free_area( void *base, void *end, size_t size, size_t mask, int top_down )
318 {
319 struct list *ptr;
320 void *start;
321
322 if (top_down)
323 {
324 start = ROUND_ADDR( (char *)end - size, mask );
325 if (start >= end || start < base) return NULL;
326
327 for (ptr = views_list.prev; ptr != &views_list; ptr = ptr->prev)
328 {
329 struct file_view *view = LIST_ENTRY( ptr, struct file_view, entry );
330
331 if ((char *)view->base + view->size <= (char *)start) break;
332 if ((char *)view->base >= (char *)start + size) continue;
333 start = ROUND_ADDR( (char *)view->base - size, mask );
334 /* stop if remaining space is not large enough */
335 if (!start || start >= end || start < base) return NULL;
336 }
337 }
338 else
339 {
340 start = ROUND_ADDR( (char *)base + mask, mask );
341 if (start >= end || (char *)end - (char *)start < size) return NULL;
342
343 for (ptr = views_list.next; ptr != &views_list; ptr = ptr->next)
344 {
345 struct file_view *view = LIST_ENTRY( ptr, struct file_view, entry );
346
347 if ((char *)view->base >= (char *)start + size) break;
348 if ((char *)view->base + view->size <= (char *)start) continue;
349 start = ROUND_ADDR( (char *)view->base + view->size + mask, mask );
350 /* stop if remaining space is not large enough */
351 if (!start || start >= end || (char *)end - (char *)start < size) return NULL;
352 }
353 }
354 return start;
355 }
356
357
358 /***********************************************************************
359 * add_reserved_area
360 *
361 * Add a reserved area to the list maintained by libwine.
362 * The csVirtual section must be held by caller.
363 */
364 static void add_reserved_area( void *addr, size_t size )
365 {
366 TRACE( "adding %p-%p\n", addr, (char *)addr + size );
367
368 if (addr < user_space_limit)
369 {
370 /* unmap the part of the area that is below the limit */
371 assert( (char *)addr + size > (char *)user_space_limit );
372 munmap( addr, (char *)user_space_limit - (char *)addr );
373 size -= (char *)user_space_limit - (char *)addr;
374 addr = user_space_limit;
375 }
376 /* blow away existing mappings */
377 wine_anon_mmap( addr, size, PROT_NONE, MAP_NORESERVE | MAP_FIXED );
378 wine_mmap_add_reserved_area( addr, size );
379 }
380
381
382 /***********************************************************************
383 * remove_reserved_area
384 *
385 * Remove a reserved area from the list maintained by libwine.
386 * The csVirtual section must be held by caller.
387 */
388 static void remove_reserved_area( void *addr, size_t size )
389 {
390 struct file_view *view;
391
392 TRACE( "removing %p-%p\n", addr, (char *)addr + size );
393 wine_mmap_remove_reserved_area( addr, size, 0 );
394
395 /* unmap areas not covered by an existing view */
396 LIST_FOR_EACH_ENTRY( view, &views_list, struct file_view, entry )
397 {
398 if ((char *)view->base >= (char *)addr + size)
399 {
400 munmap( addr, size );
401 break;
402 }
403 if ((char *)view->base + view->size <= (char *)addr) continue;
404 if (view->base > addr) munmap( addr, (char *)view->base - (char *)addr );
405 if ((char *)view->base + view->size > (char *)addr + size) break;
406 size = (char *)addr + size - ((char *)view->base + view->size);
407 addr = (char *)view->base + view->size;
408 }
409 }
410
411
412 /***********************************************************************
413 * is_beyond_limit
414 *
415 * Check if an address range goes beyond a given limit.
416 */
417 static inline int is_beyond_limit( const void *addr, size_t size, const void *limit )
418 {
419 return (addr >= limit || (const char *)addr + size > (const char *)limit);
420 }
421
422
423 /***********************************************************************
424 * unmap_area
425 *
426 * Unmap an area, or simply replace it by an empty mapping if it is
427 * in a reserved area. The csVirtual section must be held by caller.
428 */
429 static inline void unmap_area( void *addr, size_t size )
430 {
431 if (wine_mmap_is_in_reserved_area( addr, size ))
432 wine_anon_mmap( addr, size, PROT_NONE, MAP_NORESERVE | MAP_FIXED );
433 else if (is_beyond_limit( addr, size, user_space_limit ))
434 add_reserved_area( addr, size );
435 else
436 munmap( addr, size );
437 }
438
439
440 /***********************************************************************
441 * delete_view
442 *
443 * Deletes a view. The csVirtual section must be held by caller.
444 */
445 static void delete_view( struct file_view *view ) /* [in] View */
446 {
447 if (!(view->protect & VPROT_SYSTEM)) unmap_area( view->base, view->size );
448 list_remove( &view->entry );
449 if (view->mapping) close_handle( view->mapping );
450 RtlFreeHeap( virtual_heap, 0, view );
451 }
452
453
454 /***********************************************************************
455 * create_view
456 *
457 * Create a view. The csVirtual section must be held by caller.
458 */
459 static NTSTATUS create_view( struct file_view **view_ret, void *base, size_t size, unsigned int vprot )
460 {
461 struct file_view *view;
462 struct list *ptr;
463 int unix_prot = VIRTUAL_GetUnixProt( vprot );
464
465 assert( !((UINT_PTR)base & page_mask) );
466 assert( !(size & page_mask) );
467
468 /* Create the view structure */
469
470 if (!(view = RtlAllocateHeap( virtual_heap, 0, sizeof(*view) + (size >> page_shift) - 1 )))
471 {
472 FIXME( "out of memory in virtual heap for %p-%p\n", base, (char *)base + size );
473 return STATUS_NO_MEMORY;
474 }
475
476 view->base = base;
477 view->size = size;
478 view->mapping = 0;
479 view->protect = vprot;
480 memset( view->prot, vprot, size >> page_shift );
481
482 /* Insert it in the linked list */
483
484 LIST_FOR_EACH( ptr, &views_list )
485 {
486 struct file_view *next = LIST_ENTRY( ptr, struct file_view, entry );
487 if (next->base > base) break;
488 }
489 list_add_before( ptr, &view->entry );
490
491 /* Check for overlapping views. This can happen if the previous view
492 * was a system view that got unmapped behind our back. In that case
493 * we recover by simply deleting it. */
494
495 if ((ptr = list_prev( &views_list, &view->entry )) != NULL)
496 {
497 struct file_view *prev = LIST_ENTRY( ptr, struct file_view, entry );
498 if ((char *)prev->base + prev->size > (char *)base)
499 {
500 TRACE( "overlapping prev view %p-%p for %p-%p\n",
501 prev->base, (char *)prev->base + prev->size,
502 base, (char *)base + view->size );
503 assert( prev->protect & VPROT_SYSTEM );
504 delete_view( prev );
505 }
506 }
507 if ((ptr = list_next( &views_list, &view->entry )) != NULL)
508 {
509 struct file_view *next = LIST_ENTRY( ptr, struct file_view, entry );
510 if ((char *)base + view->size > (char *)next->base)
511 {
512 TRACE( "overlapping next view %p-%p for %p-%p\n",
513 next->base, (char *)next->base + next->size,
514 base, (char *)base + view->size );
515 assert( next->protect & VPROT_SYSTEM );
516 delete_view( next );
517 }
518 }
519
520 *view_ret = view;
521 VIRTUAL_DEBUG_DUMP_VIEW( view );
522
523 if (force_exec_prot && !(vprot & VPROT_NOEXEC) && (unix_prot & PROT_READ) && !(unix_prot & PROT_EXEC))
524 {
525 TRACE( "forcing exec permission on %p-%p\n", base, (char *)base + size - 1 );
526 mprotect( base, size, unix_prot | PROT_EXEC );
527 }
528 return STATUS_SUCCESS;
529 }
530
531
532 /***********************************************************************
533 * VIRTUAL_GetWin32Prot
534 *
535 * Convert page protections to Win32 flags.
536 */
537 static DWORD VIRTUAL_GetWin32Prot( BYTE vprot )
538 {
539 DWORD ret = VIRTUAL_Win32Flags[vprot & 0x0f];
540 if (vprot & VPROT_NOCACHE) ret |= PAGE_NOCACHE;
541 if (vprot & VPROT_GUARD) ret |= PAGE_GUARD;
542 return ret;
543 }
544
545
546 /***********************************************************************
547 * get_vprot_flags
548 *
549 * Build page protections from Win32 flags.
550 *
551 * PARAMS
552 * protect [I] Win32 protection flags
553 *
554 * RETURNS
555 * Value of page protection flags
556 */
557 static NTSTATUS get_vprot_flags( DWORD protect, unsigned int *vprot )
558 {
559 switch(protect & 0xff)
560 {
561 case PAGE_READONLY:
562 *vprot = VPROT_READ;
563 break;
564 case PAGE_READWRITE:
565 *vprot = VPROT_READ | VPROT_WRITE;
566 break;
567 case PAGE_WRITECOPY:
568 *vprot = VPROT_READ | VPROT_WRITECOPY;
569 break;
570 case PAGE_EXECUTE:
571 *vprot = VPROT_EXEC;
572 break;
573 case PAGE_EXECUTE_READ:
574 *vprot = VPROT_EXEC | VPROT_READ;
575 break;
576 case PAGE_EXECUTE_READWRITE:
577 *vprot = VPROT_EXEC | VPROT_READ | VPROT_WRITE;
578 break;
579 case PAGE_EXECUTE_WRITECOPY:
580 *vprot = VPROT_EXEC | VPROT_READ | VPROT_WRITECOPY;
581 break;
582 case PAGE_NOACCESS:
583 *vprot = 0;
584 break;
585 default:
586 return STATUS_INVALID_PARAMETER;
587 }
588 if (protect & PAGE_GUARD) *vprot |= VPROT_GUARD;
589 if (protect & PAGE_NOCACHE) *vprot |= VPROT_NOCACHE;
590 return STATUS_SUCCESS;
591 }
592
593
594 /***********************************************************************
595 * VIRTUAL_SetProt
596 *
597 * Change the protection of a range of pages.
598 *
599 * RETURNS
600 * TRUE: Success
601 * FALSE: Failure
602 */
603 static BOOL VIRTUAL_SetProt( struct file_view *view, /* [in] Pointer to view */
604 void *base, /* [in] Starting address */
605 size_t size, /* [in] Size in bytes */
606 BYTE vprot ) /* [in] Protections to use */
607 {
608 int unix_prot = VIRTUAL_GetUnixProt(vprot);
609 BYTE *p = view->prot + (((char *)base - (char *)view->base) >> page_shift);
610
611 TRACE("%p-%p %s\n",
612 base, (char *)base + size - 1, VIRTUAL_GetProtStr( vprot ) );
613
614 if (view->protect & VPROT_WRITEWATCH)
615 {
616 /* each page may need different protections depending on write watch flag */
617 UINT i, count;
618 char *addr = base;
619 int prot;
620
621 p[0] = vprot | (p[0] & VPROT_WRITEWATCH);
622 unix_prot = VIRTUAL_GetUnixProt( p[0] );
623 for (count = i = 1; i < size >> page_shift; i++, count++)
624 {
625 p[i] = vprot | (p[i] & VPROT_WRITEWATCH);
626 prot = VIRTUAL_GetUnixProt( p[i] );
627 if (prot == unix_prot) continue;
628 mprotect( addr, count << page_shift, unix_prot );
629 addr += count << page_shift;
630 unix_prot = prot;
631 count = 0;
632 }
633 if (count) mprotect( addr, count << page_shift, unix_prot );
634 VIRTUAL_DEBUG_DUMP_VIEW( view );
635 return TRUE;
636 }
637
638 /* if setting stack guard pages, store the permissions first, as the guard may be
639 * triggered at any point after mprotect and change the permissions again */
640 if ((vprot & VPROT_GUARD) &&
641 (base >= NtCurrentTeb()->DeallocationStack) &&
642 (base < NtCurrentTeb()->Tib.StackBase))
643 {
644 memset( p, vprot, size >> page_shift );
645 mprotect( base, size, unix_prot );
646 VIRTUAL_DEBUG_DUMP_VIEW( view );
647 return TRUE;
648 }
649
650 if (force_exec_prot && !(view->protect & VPROT_NOEXEC) &&
651 (unix_prot & PROT_READ) && !(unix_prot & PROT_EXEC))
652 {
653 TRACE( "forcing exec permission on %p-%p\n", base, (char *)base + size - 1 );
654 if (!mprotect( base, size, unix_prot | PROT_EXEC )) goto done;
655 /* exec + write may legitimately fail, in that case fall back to write only */
656 if (!(unix_prot & PROT_WRITE)) return FALSE;
657 }
658
659 if (mprotect( base, size, unix_prot )) return FALSE; /* FIXME: last error */
660
661 done:
662 memset( p, vprot, size >> page_shift );
663 VIRTUAL_DEBUG_DUMP_VIEW( view );
664 return TRUE;
665 }
666
667
668 /***********************************************************************
669 * reset_write_watches
670 *
671 * Reset write watches in a memory range.
672 */
673 static void reset_write_watches( struct file_view *view, void *base, SIZE_T size )
674 {
675 SIZE_T i, count;
676 int prot, unix_prot;
677 char *addr = base;
678 BYTE *p = view->prot + ((addr - (char *)view->base) >> page_shift);
679
680 p[0] |= VPROT_WRITEWATCH;
681 unix_prot = VIRTUAL_GetUnixProt( p[0] );
682 for (count = i = 1; i < size >> page_shift; i++, count++)
683 {
684 p[i] |= VPROT_WRITEWATCH;
685 prot = VIRTUAL_GetUnixProt( p[i] );
686 if (prot == unix_prot) continue;
687 mprotect( addr, count << page_shift, unix_prot );
688 addr += count << page_shift;
689 unix_prot = prot;
690 count = 0;
691 }
692 if (count) mprotect( addr, count << page_shift, unix_prot );
693 }
694
695
696 /***********************************************************************
697 * unmap_extra_space
698 *
699 * Release the extra memory while keeping the range starting on the granularity boundary.
700 */
701 static inline void *unmap_extra_space( void *ptr, size_t total_size, size_t wanted_size, size_t mask )
702 {
703 if ((ULONG_PTR)ptr & mask)
704 {
705 size_t extra = mask + 1 - ((ULONG_PTR)ptr & mask);
706 munmap( ptr, extra );
707 ptr = (char *)ptr + extra;
708 total_size -= extra;
709 }
710 if (total_size > wanted_size)
711 munmap( (char *)ptr + wanted_size, total_size - wanted_size );
712 return ptr;
713 }
714
715
716 struct alloc_area
717 {
718 size_t size;
719 size_t mask;
720 int top_down;
721 void *limit;
722 void *result;
723 };
724
725 /***********************************************************************
726 * alloc_reserved_area_callback
727 *
728 * Try to map some space inside a reserved area. Callback for wine_mmap_enum_reserved_areas.
729 */
730 static int alloc_reserved_area_callback( void *start, size_t size, void *arg )
731 {
732 struct alloc_area *alloc = arg;
733 void *end = (char *)start + size;
734
735 if (start < address_space_start) start = address_space_start;
736 if (is_beyond_limit( start, size, alloc->limit )) end = alloc->limit;
737 if (start >= end) return 0;
738
739 /* make sure we don't touch the preloader reserved range */
740 if (preload_reserve_end >= start)
741 {
742 if (preload_reserve_end >= end)
743 {
744 if (preload_reserve_start <= start) return 0; /* no space in that area */
745 if (preload_reserve_start < end) end = preload_reserve_start;
746 }
747 else if (preload_reserve_start <= start) start = preload_reserve_end;
748 else
749 {
750 /* range is split in two by the preloader reservation, try first part */
751 if ((alloc->result = find_free_area( start, preload_reserve_start, alloc->size,
752 alloc->mask, alloc->top_down )))
753 return 1;
754 /* then fall through to try second part */
755 start = preload_reserve_end;
756 }
757 }
758 if ((alloc->result = find_free_area( start, end, alloc->size, alloc->mask, alloc->top_down )))
759 return 1;
760
761 return 0;
762 }
763
764
765 /***********************************************************************
766 * map_view
767 *
768 * Create a view and mmap the corresponding memory area.
769 * The csVirtual section must be held by caller.
770 */
771 static NTSTATUS map_view( struct file_view **view_ret, void *base, size_t size, size_t mask,
772 int top_down, unsigned int vprot )
773 {
774 void *ptr;
775 NTSTATUS status;
776
777 if (base)
778 {
779 if (is_beyond_limit( base, size, address_space_limit ))
780 return STATUS_WORKING_SET_LIMIT_RANGE;
781
782 switch (wine_mmap_is_in_reserved_area( base, size ))
783 {
784 case -1: /* partially in a reserved area */
785 return STATUS_CONFLICTING_ADDRESSES;
786
787 case 0: /* not in a reserved area, do a normal allocation */
788 if ((ptr = wine_anon_mmap( base, size, VIRTUAL_GetUnixProt(vprot), 0 )) == (void *)-1)
789 {
790 if (errno == ENOMEM) return STATUS_NO_MEMORY;
791 return STATUS_INVALID_PARAMETER;
792 }
793 if (ptr != base)
794 {
795 /* We couldn't get the address we wanted */
796 if (is_beyond_limit( ptr, size, user_space_limit )) add_reserved_area( ptr, size );
797 else munmap( ptr, size );
798 return STATUS_CONFLICTING_ADDRESSES;
799 }
800 break;
801
802 default:
803 case 1: /* in a reserved area, make sure the address is available */
804 if (find_view_range( base, size )) return STATUS_CONFLICTING_ADDRESSES;
805 /* replace the reserved area by our mapping */
806 if ((ptr = wine_anon_mmap( base, size, VIRTUAL_GetUnixProt(vprot), MAP_FIXED )) != base)
807 return STATUS_INVALID_PARAMETER;
808 break;
809 }
810 if (is_beyond_limit( ptr, size, working_set_limit )) working_set_limit = address_space_limit;
811 }
812 else
813 {
814 size_t view_size = size + mask + 1;
815 struct alloc_area alloc;
816
817 alloc.size = size;
818 alloc.mask = mask;
819 alloc.top_down = top_down;
820 alloc.limit = user_space_limit;
821 if (wine_mmap_enum_reserved_areas( alloc_reserved_area_callback, &alloc, top_down ))
822 {
823 ptr = alloc.result;
824 TRACE( "got mem in reserved area %p-%p\n", ptr, (char *)ptr + size );
825 if (wine_anon_mmap( ptr, size, VIRTUAL_GetUnixProt(vprot), MAP_FIXED ) != ptr)
826 return STATUS_INVALID_PARAMETER;
827 goto done;
828 }
829
830 for (;;)
831 {
832 if ((ptr = wine_anon_mmap( NULL, view_size, VIRTUAL_GetUnixProt(vprot), 0 )) == (void *)-1)
833 {
834 if (errno == ENOMEM) return STATUS_NO_MEMORY;
835 return STATUS_INVALID_PARAMETER;
836 }
837 TRACE( "got mem with anon mmap %p-%p\n", ptr, (char *)ptr + size );
838 /* if we got something beyond the user limit, unmap it and retry */
839 if (is_beyond_limit( ptr, view_size, user_space_limit )) add_reserved_area( ptr, view_size );
840 else break;
841 }
842 ptr = unmap_extra_space( ptr, view_size, size, mask );
843 }
844 done:
845 status = create_view( view_ret, ptr, size, vprot );
846 if (status != STATUS_SUCCESS) unmap_area( ptr, size );
847 return status;
848 }
849
850
851 /***********************************************************************
852 * map_file_into_view
853 *
854 * Wrapper for mmap() to map a file into a view, falling back to read if mmap fails.
855 * The csVirtual section must be held by caller.
856 */
857 static NTSTATUS map_file_into_view( struct file_view *view, int fd, size_t start, size_t size,
858 off_t offset, unsigned int vprot, BOOL removable )
859 {
860 void *ptr;
861 int prot = VIRTUAL_GetUnixProt( vprot | VPROT_COMMITTED /* make sure it is accessible */ );
862 BOOL shared_write = (vprot & VPROT_WRITE) != 0;
863
864 assert( start < view->size );
865 assert( start + size <= view->size );
866
867 if (force_exec_prot && !(vprot & VPROT_NOEXEC) && (vprot & VPROT_READ))
868 {
869 TRACE( "forcing exec permission on mapping %p-%p\n",
870 (char *)view->base + start, (char *)view->base + start + size - 1 );
871 prot |= PROT_EXEC;
872 }
873
874 /* only try mmap if media is not removable (or if we require write access) */
875 if (!removable || shared_write)
876 {
877 int flags = MAP_FIXED | (shared_write ? MAP_SHARED : MAP_PRIVATE);
878
879 if (mmap( (char *)view->base + start, size, prot, flags, fd, offset ) != (void *)-1)
880 goto done;
881
882 if ((errno == EPERM) && (prot & PROT_EXEC))
883 ERR( "failed to set %08x protection on file map, noexec filesystem?\n", prot );
884
885 /* mmap() failed; if this is because the file offset is not */
886 /* page-aligned (EINVAL), or because the underlying filesystem */
887 /* does not support mmap() (ENOEXEC,ENODEV), we do it by hand. */
888 if ((errno != ENOEXEC) && (errno != EINVAL) && (errno != ENODEV)) return FILE_GetNtStatus();
889 if (shared_write) /* we cannot fake shared write mappings */
890 {
891 if (errno == EINVAL) return STATUS_INVALID_PARAMETER;
892 ERR( "shared writable mmap not supported, broken filesystem?\n" );
893 return STATUS_NOT_SUPPORTED;
894 }
895 }
896
897 /* Reserve the memory with an anonymous mmap */
898 ptr = wine_anon_mmap( (char *)view->base + start, size, PROT_READ | PROT_WRITE, MAP_FIXED );
899 if (ptr == (void *)-1) return FILE_GetNtStatus();
900 /* Now read in the file */
901 pread( fd, ptr, size, offset );
902 if (prot != (PROT_READ|PROT_WRITE)) mprotect( ptr, size, prot ); /* Set the right protection */
903 done:
904 memset( view->prot + (start >> page_shift), vprot, ROUND_SIZE(start,size) >> page_shift );
905 return STATUS_SUCCESS;
906 }
907
908
909 /***********************************************************************
910 * get_committed_size
911 *
912 * Get the size of the committed range starting at base.
913 * Also return the protections for the first page.
914 */
915 static SIZE_T get_committed_size( struct file_view *view, void *base, BYTE *vprot )
916 {
917 SIZE_T i, start;
918
919 start = ((char *)base - (char *)view->base) >> page_shift;
920 *vprot = view->prot[start];
921
922 if (view->mapping && !(view->protect & VPROT_COMMITTED))
923 {
924 SIZE_T ret = 0;
925 SERVER_START_REQ( get_mapping_committed_range )
926 {
927 req->handle = wine_server_obj_handle( view->mapping );
928 req->offset = start << page_shift;
929 if (!wine_server_call( req ))
930 {
931 ret = reply->size;
932 if (reply->committed)
933 {
934 *vprot |= VPROT_COMMITTED;
935 for (i = 0; i < ret >> page_shift; i++) view->prot[start+i] |= VPROT_COMMITTED;
936 }
937 }
938 }
939 SERVER_END_REQ;
940 return ret;
941 }
942 for (i = start + 1; i < view->size >> page_shift; i++)
943 if ((*vprot ^ view->prot[i]) & VPROT_COMMITTED) break;
944 return (i - start) << page_shift;
945 }
946
947
948 /***********************************************************************
949 * decommit_view
950 *
951 * Decommit some pages of a given view.
952 * The csVirtual section must be held by caller.
953 */
954 static NTSTATUS decommit_pages( struct file_view *view, size_t start, size_t size )
955 {
956 if (wine_anon_mmap( (char *)view->base + start, size, PROT_NONE, MAP_FIXED ) != (void *)-1)
957 {
958 BYTE *p = view->prot + (start >> page_shift);
959 size >>= page_shift;
960 while (size--) *p++ &= ~VPROT_COMMITTED;
961 return STATUS_SUCCESS;
962 }
963 return FILE_GetNtStatus();
964 }
965
966
967 /***********************************************************************
968 * allocate_dos_memory
969 *
970 * Allocate the DOS memory range.
971 */
972 static NTSTATUS allocate_dos_memory( struct file_view **view, unsigned int vprot )
973 {
974 size_t size;
975 void *addr = NULL;
976 void * const low_64k = (void *)0x10000;
977 const size_t dosmem_size = 0x110000;
978 int unix_prot = VIRTUAL_GetUnixProt( vprot );
979 struct list *ptr;
980
981 /* check for existing view */
982
983 if ((ptr = list_head( &views_list )))
984 {
985 struct file_view *first_view = LIST_ENTRY( ptr, struct file_view, entry );
986 if (first_view->base < (void *)dosmem_size) return STATUS_CONFLICTING_ADDRESSES;
987 }
988
989 /* check without the first 64K */
990
991 if (wine_mmap_is_in_reserved_area( low_64k, dosmem_size - 0x10000 ) != 1)
992 {
993 addr = wine_anon_mmap( low_64k, dosmem_size - 0x10000, unix_prot, 0 );
994 if (addr != low_64k)
995 {
996 if (addr != (void *)-1) munmap( addr, dosmem_size - 0x10000 );
997 return map_view( view, NULL, dosmem_size, 0xffff, 0, vprot );
998 }
999 }
1000
1001 /* now try to allocate the low 64K too */
1002
1003 if (wine_mmap_is_in_reserved_area( NULL, 0x10000 ) != 1)
1004 {
1005 addr = wine_anon_mmap( (void *)page_size, 0x10000 - page_size, unix_prot, 0 );
1006 if (addr == (void *)page_size)
1007 {
1008 if (!wine_anon_mmap( NULL, page_size, unix_prot, MAP_FIXED ))
1009 {
1010 addr = NULL;
1011 TRACE( "successfully mapped low 64K range\n" );
1012 }
1013 else TRACE( "failed to map page 0\n" );
1014 }
1015 else
1016 {
1017 if (addr != (void *)-1) munmap( addr, 0x10000 - page_size );
1018 addr = low_64k;
1019 TRACE( "failed to map low 64K range\n" );
1020 }
1021 }
1022
1023 /* now reserve the whole range */
1024
1025 size = (char *)dosmem_size - (char *)addr;
1026 wine_anon_mmap( addr, size, unix_prot, MAP_FIXED );
1027 return create_view( view, addr, size, vprot );
1028 }
1029
1030
1031 /***********************************************************************
1032 * stat_mapping_file
1033 *
1034 * Stat the underlying file for a memory view.
1035 */
1036 static NTSTATUS stat_mapping_file( struct file_view *view, struct stat *st )
1037 {
1038 NTSTATUS status;
1039 int unix_fd, needs_close;
1040
1041 if (!view->mapping) return STATUS_NOT_MAPPED_VIEW;
1042 if (!(status = server_get_unix_fd( view->mapping, 0, &unix_fd, &needs_close, NULL, NULL )))
1043 {
1044 if (fstat( unix_fd, st ) == -1) status = FILE_GetNtStatus();
1045 if (needs_close) close( unix_fd );
1046 }
1047 return status;
1048 }
1049
1050
1051 /***********************************************************************
1052 * map_image
1053 *
1054 * Map an executable (PE format) image into memory.
1055 */
1056 static NTSTATUS map_image( HANDLE hmapping, int fd, char *base, SIZE_T total_size, SIZE_T mask,
1057 SIZE_T header_size, int shared_fd, HANDLE dup_mapping, PVOID *addr_ptr )
1058 {
1059 IMAGE_DOS_HEADER *dos;
1060 IMAGE_NT_HEADERS *nt;
1061 IMAGE_SECTION_HEADER *sec;
1062 IMAGE_DATA_DIRECTORY *imports;
1063 NTSTATUS status = STATUS_CONFLICTING_ADDRESSES;
1064 int i;
1065 off_t pos;
1066 sigset_t sigset;
1067 struct stat st;
1068 struct file_view *view = NULL;
1069 char *ptr, *header_end;
1070 INT_PTR delta = 0;
1071
1072 /* zero-map the whole range */
1073
1074 server_enter_uninterrupted_section( &csVirtual, &sigset );
1075
1076 if (base >= (char *)address_space_start) /* make sure the DOS area remains free */
1077 status = map_view( &view, base, total_size, mask, FALSE,
1078 VPROT_COMMITTED | VPROT_READ | VPROT_EXEC | VPROT_WRITECOPY | VPROT_IMAGE );
1079
1080 if (status != STATUS_SUCCESS)
1081 status = map_view( &view, NULL, total_size, mask, FALSE,
1082 VPROT_COMMITTED | VPROT_READ | VPROT_EXEC | VPROT_WRITECOPY | VPROT_IMAGE );
1083
1084 if (status != STATUS_SUCCESS) goto error;
1085
1086 ptr = view->base;
1087 TRACE_(module)( "mapped PE file at %p-%p\n", ptr, ptr + total_size );
1088
1089 /* map the header */
1090
1091 if (fstat( fd, &st ) == -1)
1092 {
1093 status = FILE_GetNtStatus();
1094 goto error;
1095 }
1096 status = STATUS_INVALID_IMAGE_FORMAT; /* generic error */
1097 if (!st.st_size) goto error;
1098 header_size = min( header_size, st.st_size );
1099 if (map_file_into_view( view, fd, 0, header_size, 0, VPROT_COMMITTED | VPROT_READ | VPROT_WRITECOPY,
1100 !dup_mapping ) != STATUS_SUCCESS) goto error;
1101 dos = (IMAGE_DOS_HEADER *)ptr;
1102 nt = (IMAGE_NT_HEADERS *)(ptr + dos->e_lfanew);
1103 header_end = ptr + ROUND_SIZE( 0, header_size );
1104 memset( ptr + header_size, 0, header_end - (ptr + header_size) );
1105 if ((char *)(nt + 1) > header_end) goto error;
1106 sec = (IMAGE_SECTION_HEADER*)((char*)&nt->OptionalHeader+nt->FileHeader.SizeOfOptionalHeader);
1107 if ((char *)(sec + nt->FileHeader.NumberOfSections) > header_end) goto error;
1108
1109 imports = nt->OptionalHeader.DataDirectory + IMAGE_DIRECTORY_ENTRY_IMPORT;
1110 if (!imports->Size || !imports->VirtualAddress) imports = NULL;
1111
1112 /* check the architecture */
1113
1114 #ifdef __x86_64__
1115 if (nt->FileHeader.Machine != IMAGE_FILE_MACHINE_AMD64)
1116 #elif defined(__ARMEL__)
1117 if (nt->FileHeader.Machine != IMAGE_FILE_MACHINE_ARM &&
1118 nt->FileHeader.Machine != IMAGE_FILE_MACHINE_THUMB)
1119 #else
1120 if (nt->FileHeader.Machine != IMAGE_FILE_MACHINE_I386)
1121 #endif
1122 {
1123 MESSAGE("Trying to load PE image for unsupported architecture (");
1124 switch (nt->FileHeader.Machine)
1125 {
1126 case IMAGE_FILE_MACHINE_UNKNOWN: MESSAGE("Unknown"); break;
1127 case IMAGE_FILE_MACHINE_I860: MESSAGE("I860"); break;
1128 case IMAGE_FILE_MACHINE_I386: MESSAGE("I386"); break;
1129 case IMAGE_FILE_MACHINE_R3000: MESSAGE("R3000"); break;
1130 case IMAGE_FILE_MACHINE_R4000: MESSAGE("R4000"); break;
1131 case IMAGE_FILE_MACHINE_R10000: MESSAGE("R10000"); break;
1132 case IMAGE_FILE_MACHINE_ALPHA: MESSAGE("Alpha"); break;
1133 case IMAGE_FILE_MACHINE_POWERPC: MESSAGE("PowerPC"); break;
1134 case IMAGE_FILE_MACHINE_IA64: MESSAGE("IA-64"); break;
1135 case IMAGE_FILE_MACHINE_ALPHA64: MESSAGE("Alpha-64"); break;
1136 case IMAGE_FILE_MACHINE_AMD64: MESSAGE("AMD-64"); break;
1137 case IMAGE_FILE_MACHINE_ARM: MESSAGE("ARM"); break;
1138 case IMAGE_FILE_MACHINE_THUMB: MESSAGE("ARM Thumb"); break;
1139 case IMAGE_FILE_MACHINE_SPARC: MESSAGE("SPARC"); break;
1140 default: MESSAGE("Unknown-%04x", nt->FileHeader.Machine); break;
1141 }
1142 MESSAGE(")\n");
1143 goto error;
1144 }
1145
1146 /* check for non page-aligned binary */
1147
1148 if (nt->OptionalHeader.SectionAlignment <= page_mask)
1149 {
1150 /* unaligned sections, this happens for native subsystem binaries */
1151 /* in that case Windows simply maps in the whole file */
1152
1153 if (map_file_into_view( view, fd, 0, total_size, 0, VPROT_COMMITTED | VPROT_READ,
1154 !dup_mapping ) != STATUS_SUCCESS) goto error;
1155
1156 /* check that all sections are loaded at the right offset */
1157 if (nt->OptionalHeader.FileAlignment != nt->OptionalHeader.SectionAlignment) goto error;
1158 for (i = 0; i < nt->FileHeader.NumberOfSections; i++)
1159 {
1160 if (sec[i].VirtualAddress != sec[i].PointerToRawData)
1161 goto error; /* Windows refuses to load in that case too */
1162 }
1163
1164 /* set the image protections */
1165 VIRTUAL_SetProt( view, ptr, total_size,
1166 VPROT_COMMITTED | VPROT_READ | VPROT_WRITECOPY | VPROT_EXEC );
1167
1168 /* no relocations are performed on non page-aligned binaries */
1169 goto done;
1170 }
1171
1172
1173 /* map all the sections */
1174
1175 for (i = pos = 0; i < nt->FileHeader.NumberOfSections; i++, sec++)
1176 {
1177 static const SIZE_T sector_align = 0x1ff;
1178 SIZE_T map_size, file_start, file_size, end;
1179
1180 if (!sec->Misc.VirtualSize)
1181 map_size = ROUND_SIZE( 0, sec->SizeOfRawData );
1182 else
1183 map_size = ROUND_SIZE( 0, sec->Misc.VirtualSize );
1184
1185 /* file positions are rounded to sector boundaries regardless of OptionalHeader.FileAlignment */
1186 file_start = sec->PointerToRawData & ~sector_align;
1187 file_size = (sec->SizeOfRawData + (sec->PointerToRawData & sector_align) + sector_align) & ~sector_align;
1188 if (file_size > map_size) file_size = map_size;
1189
1190 /* a few sanity checks */
1191 end = sec->VirtualAddress + ROUND_SIZE( sec->VirtualAddress, map_size );
1192 if (sec->VirtualAddress > total_size || end > total_size || end < sec->VirtualAddress)
1193 {
1194 WARN_(module)( "Section %.8s too large (%x+%lx/%lx)\n",
1195 sec->Name, sec->VirtualAddress, map_size, total_size );
1196 goto error;
1197 }
1198
1199 if ((sec->Characteristics & IMAGE_SCN_MEM_SHARED) &&
1200 (sec->Characteristics & IMAGE_SCN_MEM_WRITE))
1201 {
1202 TRACE_(module)( "mapping shared section %.8s at %p off %x (%x) size %lx (%lx) flags %x\n",
1203 sec->Name, ptr + sec->VirtualAddress,
1204 sec->PointerToRawData, (int)pos, file_size, map_size,
1205 sec->Characteristics );
1206 if (map_file_into_view( view, shared_fd, sec->VirtualAddress, map_size, pos,
1207 VPROT_COMMITTED | VPROT_READ | VPROT_WRITE,
1208 FALSE ) != STATUS_SUCCESS)
1209 {
1210 ERR_(module)( "Could not map shared section %.8s\n", sec->Name );
1211 goto error;
1212 }
1213
1214 /* check if the import directory falls inside this section */
1215 if (imports && imports->VirtualAddress >= sec->VirtualAddress &&
1216 imports->VirtualAddress < sec->VirtualAddress + map_size)
1217 {
1218 UINT_PTR base = imports->VirtualAddress & ~page_mask;
1219 UINT_PTR end = base + ROUND_SIZE( imports->VirtualAddress, imports->Size );
1220 if (end > sec->VirtualAddress + map_size) end = sec->VirtualAddress + map_size;
1221 if (end > base)
1222 map_file_into_view( view, shared_fd, base, end - base,
1223 pos + (base - sec->VirtualAddress),
1224 VPROT_COMMITTED | VPROT_READ | VPROT_WRITECOPY,
1225 FALSE );
1226 }
1227 pos += map_size;
1228 continue;
1229 }
1230
1231 TRACE_(module)( "mapping section %.8s at %p off %x size %x virt %x flags %x\n",
1232 sec->Name, ptr + sec->VirtualAddress,
1233 sec->PointerToRawData, sec->SizeOfRawData,
1234 sec->Misc.VirtualSize, sec->Characteristics );
1235
1236 if (!sec->PointerToRawData || !file_size) continue;
1237
1238 /* Note: if the section is not aligned properly map_file_into_view will magically
1239 * fall back to read(), so we don't need to check anything here.
1240 */
1241 end = file_start + file_size;
1242 if (sec->PointerToRawData >= st.st_size ||
1243 end > ((st.st_size + sector_align) & ~sector_align) ||
1244 end < file_start ||
1245 map_file_into_view( view, fd, sec->VirtualAddress, file_size, file_start,
1246 VPROT_COMMITTED | VPROT_READ | VPROT_WRITECOPY,
1247 !dup_mapping ) != STATUS_SUCCESS)
1248 {
1249 ERR_(module)( "Could not map section %.8s, file probably truncated\n", sec->Name );
1250 goto error;
1251 }
1252
1253 if (file_size & page_mask)
1254 {
1255 end = ROUND_SIZE( 0, file_size );
1256 if (end > map_size) end = map_size;
1257 TRACE_(module)("clearing %p - %p\n",
1258 ptr + sec->VirtualAddress + file_size,
1259 ptr + sec->VirtualAddress + end );
1260 memset( ptr + sec->VirtualAddress + file_size, 0, end - file_size );
1261 }
1262 }
1263
1264
1265 /* perform base relocation, if necessary */
1266
1267 if (ptr != base &&
1268 ((nt->FileHeader.Characteristics & IMAGE_FILE_DLL) ||
1269 !NtCurrentTeb()->Peb->ImageBaseAddress) )
1270 {
1271 IMAGE_BASE_RELOCATION *rel, *end;
1272 const IMAGE_DATA_DIRECTORY *relocs;
1273
1274 if (nt->FileHeader.Characteristics & IMAGE_FILE_RELOCS_STRIPPED)
1275 {
1276 WARN_(module)( "Need to relocate module from %p to %p, but there are no relocation records\n",
1277 base, ptr );
1278 status = STATUS_CONFLICTING_ADDRESSES;
1279 goto error;
1280 }
1281
1282 TRACE_(module)( "relocating from %p-%p to %p-%p\n",
1283 base, base + total_size, ptr, ptr + total_size );
1284
1285 relocs = &nt->OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_BASERELOC];
1286 rel = (IMAGE_BASE_RELOCATION *)(ptr + relocs->VirtualAddress);
1287 end = (IMAGE_BASE_RELOCATION *)(ptr + relocs->VirtualAddress + relocs->Size);
1288 delta = ptr - base;
1289
1290 while (rel < end - 1 && rel->SizeOfBlock)
1291 {
1292 if (rel->VirtualAddress >= total_size)
1293 {
1294 WARN_(module)( "invalid address %p in relocation %p\n", ptr + rel->VirtualAddress, rel );
1295 status = STATUS_ACCESS_VIOLATION;
1296 goto error;
1297 }
1298 rel = LdrProcessRelocationBlock( ptr + rel->VirtualAddress,
1299 (rel->SizeOfBlock - sizeof(*rel)) / sizeof(USHORT),
1300 (USHORT *)(rel + 1), delta );
1301 if (!rel) goto error;
1302 }
1303 }
1304
1305 /* set the image protections */
1306
1307 VIRTUAL_SetProt( view, ptr, ROUND_SIZE( 0, header_size ), VPROT_COMMITTED | VPROT_READ );
1308
1309 sec = (IMAGE_SECTION_HEADER*)((char *)&nt->OptionalHeader+nt->FileHeader.SizeOfOptionalHeader);
1310 for (i = 0; i < nt->FileHeader.NumberOfSections; i++, sec++)
1311 {
1312 SIZE_T size;
1313 BYTE vprot = VPROT_COMMITTED;
1314
1315 if (sec->Misc.VirtualSize)
1316 size = ROUND_SIZE( sec->VirtualAddress, sec->Misc.VirtualSize );
1317 else
1318 size = ROUND_SIZE( sec->VirtualAddress, sec->SizeOfRawData );
1319
1320 if (sec->Characteristics & IMAGE_SCN_MEM_READ) vprot |= VPROT_READ;
1321 if (sec->Characteristics & IMAGE_SCN_MEM_WRITE) vprot |= VPROT_READ|VPROT_WRITE;
1322 if (sec->Characteristics & IMAGE_SCN_MEM_EXECUTE) vprot |= VPROT_EXEC;
1323
1324 /* Dumb game crack lets the AOEP point into a data section. Adjust. */
1325 if ((nt->OptionalHeader.AddressOfEntryPoint >= sec->VirtualAddress) &&
1326 (nt->OptionalHeader.AddressOfEntryPoint < sec->VirtualAddress + size))
1327 vprot |= VPROT_EXEC;
1328
1329 if (!VIRTUAL_SetProt( view, ptr + sec->VirtualAddress, size, vprot ) && (vprot & VPROT_EXEC))
1330 ERR( "failed to set %08x protection on section %.8s, noexec filesystem?\n",
1331 sec->Characteristics, sec->Name );
1332 }
1333
1334 done:
1335 view->mapping = dup_mapping;
1336 server_leave_uninterrupted_section( &csVirtual, &sigset );
1337
1338 *addr_ptr = ptr;
1339 #ifdef VALGRIND_LOAD_PDB_DEBUGINFO
1340 VALGRIND_LOAD_PDB_DEBUGINFO(fd, ptr, total_size, delta);
1341 #endif
1342 if (ptr != base) return STATUS_IMAGE_NOT_AT_BASE;
1343 return STATUS_SUCCESS;
1344
1345 error:
1346 if (view) delete_view( view );
1347 server_leave_uninterrupted_section( &csVirtual, &sigset );
1348 if (dup_mapping) NtClose( dup_mapping );
1349 return status;
1350 }
1351
1352
1353 /* callback for wine_mmap_enum_reserved_areas to allocate space for the virtual heap */
1354 static int alloc_virtual_heap( void *base, size_t size, void *arg )
1355 {
1356 void **heap_base = arg;
1357
1358 if (is_beyond_limit( base, size, address_space_limit )) address_space_limit = (char *)base + size;
1359 if (size < VIRTUAL_HEAP_SIZE) return 0;
1360 *heap_base = wine_anon_mmap( (char *)base + size - VIRTUAL_HEAP_SIZE,
1361 VIRTUAL_HEAP_SIZE, PROT_READ|PROT_WRITE, MAP_FIXED );
1362 return (*heap_base != (void *)-1);
1363 }
1364
1365 /***********************************************************************
1366 * virtual_init
1367 */
1368 void virtual_init(void)
1369 {
1370 const char *preload;
1371 void *heap_base;
1372 size_t size;
1373 struct file_view *heap_view;
1374
1375 #ifndef page_mask
1376 page_size = getpagesize();
1377 page_mask = page_size - 1;
1378 /* Make sure we have a power of 2 */
1379 assert( !(page_size & page_mask) );
1380 page_shift = 0;
1381 while ((1 << page_shift) != page_size) page_shift++;
1382 user_space_limit = working_set_limit = address_space_limit = (void *)~page_mask;
1383 #endif /* page_mask */
1384 if ((preload = getenv("WINEPRELOADRESERVE")))
1385 {
1386 unsigned long start, end;
1387 if (sscanf( preload, "%lx-%lx", &start, &end ) == 2)
1388 {
1389 preload_reserve_start = (void *)start;
1390 preload_reserve_end = (void *)end;
1391 }
1392 }
1393
1394 /* try to find space in a reserved area for the virtual heap */
1395 if (!wine_mmap_enum_reserved_areas( alloc_virtual_heap, &heap_base, 1 ))
1396 heap_base = wine_anon_mmap( NULL, VIRTUAL_HEAP_SIZE, PROT_READ|PROT_WRITE, 0 );
1397
1398 assert( heap_base != (void *)-1 );
1399 virtual_heap = RtlCreateHeap( HEAP_NO_SERIALIZE, heap_base, VIRTUAL_HEAP_SIZE,
1400 VIRTUAL_HEAP_SIZE, NULL, NULL );
1401 create_view( &heap_view, heap_base, VIRTUAL_HEAP_SIZE, VPROT_COMMITTED | VPROT_READ | VPROT_WRITE );
1402
1403 /* make the DOS area accessible (except the low 64K) to hide bugs in broken apps like Excel 2003 */
1404 size = (char *)address_space_start - (char *)0x10000;
1405 if (size && wine_mmap_is_in_reserved_area( (void*)0x10000, size ) == 1)
1406 wine_anon_mmap( (void *)0x10000, size, PROT_READ | PROT_WRITE, MAP_FIXED );
1407 }
1408
1409
1410 /***********************************************************************
1411 * virtual_init_threading
1412 */
1413 void virtual_init_threading(void)
1414 {
1415 use_locks = 1;
1416 }
1417
1418
1419 /***********************************************************************
1420 * virtual_get_system_info
1421 */
1422 void virtual_get_system_info( SYSTEM_BASIC_INFORMATION *info )
1423 {
1424 info->unknown = 0;
1425 info->KeMaximumIncrement = 0; /* FIXME */
1426 info->PageSize = page_size;
1427 info->MmLowestPhysicalPage = 1;
1428 info->MmHighestPhysicalPage = 0x7fffffff / page_size;
1429 info->MmNumberOfPhysicalPages = info->MmHighestPhysicalPage - info->MmLowestPhysicalPage;
1430 info->AllocationGranularity = get_mask(0) + 1;
1431 info->LowestUserAddress = (void *)0x10000;
1432 info->HighestUserAddress = (char *)user_space_limit - 1;
1433 info->ActiveProcessorsAffinityMask = (1 << NtCurrentTeb()->Peb->NumberOfProcessors) - 1;
1434 info->NumberOfProcessors = NtCurrentTeb()->Peb->NumberOfProcessors;
1435 }
1436
1437
1438 /***********************************************************************
1439 * virtual_create_system_view
1440 */
1441 NTSTATUS virtual_create_builtin_view( void *module )
1442 {
1443 NTSTATUS status;
1444 sigset_t sigset;
1445 IMAGE_NT_HEADERS *nt = RtlImageNtHeader( module );
1446 SIZE_T size = nt->OptionalHeader.SizeOfImage;
1447 IMAGE_SECTION_HEADER *sec;
1448 struct file_view *view;
1449 void *base;
1450 int i;
1451
1452 size = ROUND_SIZE( module, size );
1453 base = ROUND_ADDR( module, page_mask );
1454 server_enter_uninterrupted_section( &csVirtual, &sigset );
1455 status = create_view( &view, base, size, VPROT_SYSTEM | VPROT_IMAGE |
1456 VPROT_COMMITTED | VPROT_READ | VPROT_WRITECOPY | VPROT_EXEC );
1457 if (!status) TRACE( "created %p-%p\n", base, (char *)base + size );
1458 server_leave_uninterrupted_section( &csVirtual, &sigset );
1459
1460 if (status) return status;
1461
1462 /* The PE header is always read-only, no write, no execute. */
1463 view->prot[0] = VPROT_COMMITTED | VPROT_READ;
1464
1465 sec = (IMAGE_SECTION_HEADER *)((char *)&nt->OptionalHeader + nt->FileHeader.SizeOfOptionalHeader);
1466 for (i = 0; i < nt->FileHeader.NumberOfSections; i++)
1467 {
1468 BYTE flags = VPROT_COMMITTED;
1469
1470 if (sec[i].Characteristics & IMAGE_SCN_MEM_EXECUTE) flags |= VPROT_EXEC;
1471 if (sec[i].Characteristics & IMAGE_SCN_MEM_READ) flags |= VPROT_READ;
1472 if (sec[i].Characteristics & IMAGE_SCN_MEM_WRITE) flags |= VPROT_WRITE;
1473 memset (view->prot + (sec[i].VirtualAddress >> page_shift), flags,
1474 ROUND_SIZE( sec[i].VirtualAddress, sec[i].Misc.VirtualSize ) >> page_shift );
1475 }
1476
1477 return status;
1478 }
1479
1480
1481 /***********************************************************************
1482 * virtual_alloc_thread_stack
1483 */
1484 NTSTATUS virtual_alloc_thread_stack( TEB *teb, SIZE_T reserve_size, SIZE_T commit_size )
1485 {
1486 struct file_view *view;
1487 NTSTATUS status;
1488 sigset_t sigset;
1489 SIZE_T size;
1490
1491 if (!reserve_size || !commit_size)
1492 {
1493 IMAGE_NT_HEADERS *nt = RtlImageNtHeader( NtCurrentTeb()->Peb->ImageBaseAddress );
1494 if (!reserve_size) reserve_size = nt->OptionalHeader.SizeOfStackReserve;
1495 if (!commit_size) commit_size = nt->OptionalHeader.SizeOfStackCommit;
1496 }
1497
1498 size = max( reserve_size, commit_size );
1499 if (size < 1024 * 1024) size = 1024 * 1024; /* Xlib needs a large stack */
1500 size = (size + 0xffff) & ~0xffff; /* round to 64K boundary */
1501
1502 server_enter_uninterrupted_section( &csVirtual, &sigset );
1503
1504 if ((status = map_view( &view, NULL, size, 0xffff, 0,
1505 VPROT_READ | VPROT_WRITE | VPROT_COMMITTED | VPROT_VALLOC )) != STATUS_SUCCESS)
1506 goto done;
1507
1508 #ifdef VALGRIND_STACK_REGISTER
1509 VALGRIND_STACK_REGISTER( view->base, (char *)view->base + view->size );
1510 #endif
1511
1512 /* setup no access guard page */
1513 VIRTUAL_SetProt( view, view->base, page_size, VPROT_COMMITTED );
1514 VIRTUAL_SetProt( view, (char *)view->base + page_size, page_size,
1515 VPROT_READ | VPROT_WRITE | VPROT_COMMITTED | VPROT_GUARD );
1516
1517 /* note: limit is lower than base since the stack grows down */
1518 teb->DeallocationStack = view->base;
1519 teb->Tib.StackBase = (char *)view->base + view->size;
1520 teb->Tib.StackLimit = (char *)view->base + 2 * page_size;
1521 done:
1522 server_leave_uninterrupted_section( &csVirtual, &sigset );
1523 return status;
1524 }
1525
1526
1527 /***********************************************************************
1528 * virtual_clear_thread_stack
1529 *
1530 * Clear the stack contents before calling the main entry point, some broken apps need that.
1531 */
1532 void virtual_clear_thread_stack(void)
1533 {
1534 void *stack = NtCurrentTeb()->Tib.StackLimit;
1535 size_t size = (char *)NtCurrentTeb()->Tib.StackBase - (char *)NtCurrentTeb()->Tib.StackLimit;
1536
1537 wine_anon_mmap( stack, size, PROT_READ | PROT_WRITE, MAP_FIXED );
1538 if (force_exec_prot) mprotect( stack, size, PROT_READ | PROT_WRITE | PROT_EXEC );
1539 }
1540
1541
1542 /***********************************************************************
1543 * virtual_handle_fault
1544 */
1545 NTSTATUS virtual_handle_fault( LPCVOID addr, DWORD err )
1546 {
1547 struct file_view *view;
1548 NTSTATUS ret = STATUS_ACCESS_VIOLATION;
1549 sigset_t sigset;
1550
1551 server_enter_uninterrupted_section( &csVirtual, &sigset );
1552 if ((view = VIRTUAL_FindView( addr, 0 )))
1553 {
1554 void *page = ROUND_ADDR( addr, page_mask );
1555 BYTE *vprot = &view->prot[((const char *)page - (const char *)view->base) >> page_shift];
1556 if (*vprot & VPROT_GUARD)
1557 {
1558 VIRTUAL_SetProt( view, page, page_size, *vprot & ~VPROT_GUARD );
1559 ret = STATUS_GUARD_PAGE_VIOLATION;
1560 }
1561 if ((err & EXCEPTION_WRITE_FAULT) && (view->protect & VPROT_WRITEWATCH))
1562 {
1563 if (*vprot & VPROT_WRITEWATCH)
1564 {
1565 *vprot &= ~VPROT_WRITEWATCH;
1566 VIRTUAL_SetProt( view, page, page_size, *vprot );
1567 }
1568 /* ignore fault if page is writable now */
1569 if (VIRTUAL_GetUnixProt( *vprot ) & PROT_WRITE) ret = STATUS_SUCCESS;
1570 }
1571 }
1572 server_leave_uninterrupted_section( &csVirtual, &sigset );
1573 return ret;
1574 }
1575
1576
1577
1578 /***********************************************************************
1579 * virtual_handle_stack_fault
1580 *
1581 * Handle an access fault inside the current thread stack.
1582 * Called from inside a signal handler.
1583 */
1584 BOOL virtual_handle_stack_fault( void *addr )
1585 {
1586 struct file_view *view;
1587 BOOL ret = FALSE;
1588
1589 RtlEnterCriticalSection( &csVirtual ); /* no need for signal masking inside signal handler */
1590 if ((view = VIRTUAL_FindView( addr, 0 )))
1591 {
1592 void *page = ROUND_ADDR( addr, page_mask );
1593 BYTE vprot = view->prot[((const char *)page - (const char *)view->base) >> page_shift];
1594 if (vprot & VPROT_GUARD)
1595 {
1596 VIRTUAL_SetProt( view, page, page_size, vprot & ~VPROT_GUARD );
1597 if ((char *)page + page_size == NtCurrentTeb()->Tib.StackLimit)
1598 NtCurrentTeb()->Tib.StackLimit = page;
1599 ret = TRUE;
1600 }
1601 }
1602 RtlLeaveCriticalSection( &csVirtual );
1603 return ret;
1604 }
1605
1606
1607 /***********************************************************************
1608 * virtual_check_buffer_for_read
1609 *
1610 * Check if a memory buffer can be read, triggering page faults if needed for DIB section access.
1611 */
1612 BOOL virtual_check_buffer_for_read( const void *ptr, SIZE_T size )
1613 {
1614 if (!size) return TRUE;
1615 if (!ptr) return FALSE;
1616
1617 __TRY
1618 {
1619 volatile const char *p = ptr;
1620 char dummy;
1621 SIZE_T count = size;
1622
1623 while (count > page_size)
1624 {
1625 dummy = *p;
1626 p += page_size;
1627 count -= page_size;
1628 }
1629 dummy = p[0];
1630 dummy = p[count - 1];
1631 }
1632 __EXCEPT_PAGE_FAULT
1633 {
1634 return FALSE;
1635 }
1636 __ENDTRY
1637 return TRUE;
1638 }
1639
1640
1641 /***********************************************************************
1642 * virtual_check_buffer_for_write
1643 *
1644 * Check if a memory buffer can be written to, triggering page faults if needed for write watches.
1645 */
1646 BOOL virtual_check_buffer_for_write( void *ptr, SIZE_T size )
1647 {
1648 if (!size) return TRUE;
1649 if (!ptr) return FALSE;
1650
1651 __TRY
1652 {
1653 volatile char *p = ptr;
1654 SIZE_T count = size;
1655
1656 while (count > page_size)
1657 {
1658 *p |= 0;
1659 p += page_size;
1660 count -= page_size;
1661 }
1662 p[0] |= 0;
1663 p[count - 1] |= 0;
1664 }
1665 __EXCEPT_PAGE_FAULT
1666 {
1667 return FALSE;
1668 }
1669 __ENDTRY
1670 return TRUE;
1671 }
1672
1673
1674 /***********************************************************************
1675 * VIRTUAL_SetForceExec
1676 *
1677 * Whether to force exec prot on all views.
1678 */
1679 void VIRTUAL_SetForceExec( BOOL enable )
1680 {
1681 struct file_view *view;
1682 sigset_t sigset;
1683
1684 server_enter_uninterrupted_section( &csVirtual, &sigset );
1685 if (!force_exec_prot != !enable) /* change all existing views */
1686 {
1687 force_exec_prot = enable;
1688
1689 LIST_FOR_EACH_ENTRY( view, &views_list, struct file_view, entry )
1690 {
1691 UINT i, count;
1692 char *addr = view->base;
1693 BYTE commit = view->mapping ? VPROT_COMMITTED : 0; /* file mappings are always accessible */
1694 int unix_prot = VIRTUAL_GetUnixProt( view->prot[0] | commit );
1695
1696 if (view->protect & VPROT_NOEXEC) continue;
1697 for (count = i = 1; i < view->size >> page_shift; i++, count++)
1698 {
1699 int prot = VIRTUAL_GetUnixProt( view->prot[i] | commit );
1700 if (prot == unix_prot) continue;
1701 if ((unix_prot & PROT_READ) && !(unix_prot & PROT_EXEC))
1702 {
1703 TRACE( "%s exec prot for %p-%p\n",
1704 force_exec_prot ? "enabling" : "disabling",
1705 addr, addr + (count << page_shift) - 1 );
1706 mprotect( addr, count << page_shift,
1707 unix_prot | (force_exec_prot ? PROT_EXEC : 0) );
1708 }
1709 addr += (count << page_shift);
1710 unix_prot = prot;
1711 count = 0;
1712 }
1713 if (count)
1714 {
1715 if ((unix_prot & PROT_READ) && !(unix_prot & PROT_EXEC))
1716 {
1717 TRACE( "%s exec prot for %p-%p\n",
1718 force_exec_prot ? "enabling" : "disabling",
1719 addr, addr + (count << page_shift) - 1 );
1720 mprotect( addr, count << page_shift,
1721 unix_prot | (force_exec_prot ? PROT_EXEC : 0) );
1722 }
1723 }
1724 }
1725 }
1726 server_leave_uninterrupted_section( &csVirtual, &sigset );
1727 }
1728
1729 struct free_range
1730 {
1731 char *base;
1732 char *limit;
1733 };
1734
1735 /* free reserved areas above the limit; callback for wine_mmap_enum_reserved_areas */
1736 static int free_reserved_memory( void *base, size_t size, void *arg )
1737 {
1738 struct free_range *range = arg;
1739
1740 if ((char *)base >= range->limit) return 0;
1741 if ((char *)base + size <= range->base) return 0;
1742 if ((char *)base < range->base)
1743 {
1744 size -= range->base - (char *)base;
1745 base = range->base;
1746 }
1747 if ((char *)base + size > range->limit) size = range->limit - (char *)base;
1748 remove_reserved_area( base, size );
1749 return 1; /* stop enumeration since the list has changed */
1750 }
1751
1752 /***********************************************************************
1753 * virtual_release_address_space
1754 *
1755 * Release some address space once we have loaded and initialized the app.
1756 */
1757 void virtual_release_address_space( BOOL free_high_mem )
1758 {
1759 struct free_range range;
1760 sigset_t sigset;
1761
1762 if (user_space_limit == address_space_limit) return; /* no need to free anything */
1763
1764 server_enter_uninterrupted_section( &csVirtual, &sigset );
1765
1766 /* no large address space on win9x */
1767 if (free_high_mem && NtCurrentTeb()->Peb->OSPlatformId == VER_PLATFORM_WIN32_NT)
1768 {
1769 range.base = (char *)0x82000000;
1770 range.limit = address_space_limit;
1771 while (wine_mmap_enum_reserved_areas( free_reserved_memory, &range, 1 )) /* nothing */;
1772 user_space_limit = working_set_limit = address_space_limit;
1773 }
1774 else
1775 {
1776 #ifndef __APPLE__ /* dyld doesn't support parts of the WINE_DOS segment being unmapped */
1777 range.base = (char *)0x20000000;
1778 range.limit = (char *)0x7f000000;
1779 while (wine_mmap_enum_reserved_areas( free_reserved_memory, &range, 0 )) /* nothing */;
1780 #endif
1781 }
1782
1783 server_leave_uninterrupted_section( &csVirtual, &sigset );
1784 }
1785
1786
1787 /***********************************************************************
1788 * NtAllocateVirtualMemory (NTDLL.@)
1789 * ZwAllocateVirtualMemory (NTDLL.@)
1790 */
1791 NTSTATUS WINAPI NtAllocateVirtualMemory( HANDLE process, PVOID *ret, ULONG zero_bits,
1792 SIZE_T *size_ptr, ULONG type, ULONG protect )
1793 {
1794 void *base;
1795 unsigned int vprot;
1796 SIZE_T size = *size_ptr;
1797 SIZE_T mask = get_mask( zero_bits );
1798 NTSTATUS status = STATUS_SUCCESS;
1799 struct file_view *view;
1800 sigset_t sigset;
1801
1802 TRACE("%p %p %08lx %x %08x\n", process, *ret, size, type, protect );
1803
1804 if (!size) return STATUS_INVALID_PARAMETER;
1805
1806 if (process != NtCurrentProcess())
1807 {
1808 apc_call_t call;
1809 apc_result_t result;
1810
1811 memset( &call, 0, sizeof(call) );
1812
1813 call.virtual_alloc.type = APC_VIRTUAL_ALLOC;
1814 call.virtual_alloc.addr = wine_server_client_ptr( *ret );
1815 call.virtual_alloc.size = *size_ptr;
1816 call.virtual_alloc.zero_bits = zero_bits;
1817 call.virtual_alloc.op_type = type;
1818 call.virtual_alloc.prot = protect;
1819 status = NTDLL_queue_process_apc( process, &call, &result );
1820 if (status != STATUS_SUCCESS) return status;
1821
1822 if (result.virtual_alloc.status == STATUS_SUCCESS)
1823 {
1824 *ret = wine_server_get_ptr( result.virtual_alloc.addr );
1825 *size_ptr = result.virtual_alloc.size;
1826 }
1827 return result.virtual_alloc.status;
1828 }
1829
1830 /* Round parameters to a page boundary */
1831
1832 if (is_beyond_limit( 0, size, working_set_limit )) return STATUS_WORKING_SET_LIMIT_RANGE;
1833
1834 if ((status = get_vprot_flags( protect, &vprot ))) return status;
1835 vprot |= VPROT_VALLOC;
1836 if (type & MEM_COMMIT) vprot |= VPROT_COMMITTED;
1837
1838 if (*ret)
1839 {
1840 if (type & MEM_RESERVE) /* Round down to 64k boundary */
1841 base = ROUND_ADDR( *ret, mask );
1842 else
1843 base = ROUND_ADDR( *ret, page_mask );
1844 size = (((UINT_PTR)*ret + size + page_mask) & ~page_mask) - (UINT_PTR)base;
1845
1846 /* address 1 is magic to mean DOS area */
1847 if (!base && *ret == (void *)1 && size == 0x110000)
1848 {
1849 server_enter_uninterrupted_section( &csVirtual, &sigset );
1850 status = allocate_dos_memory( &view, vprot );
1851 if (status == STATUS_SUCCESS)
1852 {
1853 *ret = view->base;
1854 *size_ptr = view->size;
1855 }
1856 server_leave_uninterrupted_section( &csVirtual, &sigset );
1857 return status;
1858 }
1859
1860 /* disallow low 64k, wrap-around and kernel space */
1861 if (((char *)base < (char *)0x10000) ||
1862 ((char *)base + size < (char *)base) ||
1863 is_beyond_limit( base, size, address_space_limit ))
1864 return STATUS_INVALID_PARAMETER;
1865 }
1866 else
1867 {
1868 base = NULL;
1869 size = (size + page_mask) & ~page_mask;
1870 }
1871
1872 /* Compute the alloc type flags */
1873
1874 if (!(type & (MEM_COMMIT | MEM_RESERVE | MEM_RESET)) ||
1875 (type & ~(MEM_COMMIT | MEM_RESERVE | MEM_TOP_DOWN | MEM_WRITE_WATCH | MEM_RESET)))
1876 {
1877 WARN("called with wrong alloc type flags (%08x) !\n", type);
1878 return STATUS_INVALID_PARAMETER;
1879 }
1880
1881 /* Reserve the memory */
1882
1883 if (use_locks) server_enter_uninterrupted_section( &csVirtual, &sigset );
1884
1885 if ((type & MEM_RESERVE) || !base)
1886 {
1887 if (type & MEM_WRITE_WATCH) vprot |= VPROT_WRITEWATCH;
1888 status = map_view( &view, base, size, mask, type & MEM_TOP_DOWN, vprot );
1889 if (status == STATUS_SUCCESS) base = view->base;
1890 }
1891 else if (type & MEM_RESET)
1892 {
1893 if (!(view = VIRTUAL_FindView( base, size ))) status = STATUS_NOT_MAPPED_VIEW;
1894 else madvise( base, size, MADV_DONTNEED );
1895 }
1896 else /* commit the pages */
1897 {
1898 if (!(view = VIRTUAL_FindView( base, size ))) status = STATUS_NOT_MAPPED_VIEW;
1899 else if (!VIRTUAL_SetProt( view, base, size, vprot )) status = STATUS_ACCESS_DENIED;
1900 else if (view->mapping && !(view->protect & VPROT_COMMITTED))
1901 {
1902 SERVER_START_REQ( add_mapping_committed_range )
1903 {
1904 req->handle = wine_server_obj_handle( view->mapping );
1905 req->offset = (char *)base - (char *)view->base;
1906 req->size = size;
1907 wine_server_call( req );
1908 }
1909 SERVER_END_REQ;
1910 }
1911 }
1912
1913 if (use_locks) server_leave_uninterrupted_section( &csVirtual, &sigset );
1914
1915 if (status == STATUS_SUCCESS)
1916 {
1917 *ret = base;
1918 *size_ptr = size;
1919 }
1920 return status;
1921 }
1922
1923
1924 /***********************************************************************
1925 * NtFreeVirtualMemory (NTDLL.@)
1926 * ZwFreeVirtualMemory (NTDLL.@)
1927 */
1928 NTSTATUS WINAPI NtFreeVirtualMemory( HANDLE process, PVOID *addr_ptr, SIZE_T *size_ptr, ULONG type )
1929 {
1930 struct file_view *view;
1931 char *base;
1932 sigset_t sigset;
1933 NTSTATUS status = STATUS_SUCCESS;
1934 LPVOID addr = *addr_ptr;
1935 SIZE_T size = *size_ptr;
1936
1937 TRACE("%p %p %08lx %x\n", process, addr, size, type );
1938
1939 if (process != NtCurrentProcess())
1940 {
1941 apc_call_t call;
1942 apc_result_t result;
1943
1944 memset( &call, 0, sizeof(call) );
1945
1946 call.virtual_free.type = APC_VIRTUAL_FREE;
1947 call.virtual_free.addr = wine_server_client_ptr( addr );
1948 call.virtual_free.size = size;
1949 call.virtual_free.op_type = type;
1950 status = NTDLL_queue_process_apc( process, &call, &result );
1951 if (status != STATUS_SUCCESS) return status;
1952
1953 if (result.virtual_free.status == STATUS_SUCCESS)
1954 {
1955 *addr_ptr = wine_server_get_ptr( result.virtual_free.addr );
1956 *size_ptr = result.virtual_free.size;
1957 }
1958 return result.virtual_free.status;
1959 }
1960
1961 /* Fix the parameters */
1962
1963 size = ROUND_SIZE( addr, size );
1964 base = ROUND_ADDR( addr, page_mask );
1965
1966 /* avoid freeing the DOS area when a broken app passes a NULL pointer */
1967 if (!base) return STATUS_INVALID_PARAMETER;
1968
1969 server_enter_uninterrupted_section( &csVirtual, &sigset );
1970
1971 if (!(view = VIRTUAL_FindView( base, size )) || !(view->protect & VPROT_VALLOC))
1972 {
1973 status = STATUS_INVALID_PARAMETER;
1974 }
1975 else if (type == MEM_RELEASE)
1976 {
1977 /* Free the pages */
1978
1979 if (size || (base != view->base)) status = STATUS_INVALID_PARAMETER;
1980 else
1981 {
1982 delete_view( view );
1983 *addr_ptr = base;
1984 *size_ptr = size;
1985 }
1986 }
1987 else if (type == MEM_DECOMMIT)
1988 {
1989 status = decommit_pages( view, base - (char *)view->base, size );
1990 if (status == STATUS_SUCCESS)
1991 {
1992 *addr_ptr = base;
1993 *size_ptr = size;
1994 }
1995 }
1996 else
1997 {
1998 WARN("called with wrong free type flags (%08x) !\n", type);
1999 status = STATUS_INVALID_PARAMETER;
2000 }
2001
2002 server_leave_uninterrupted_section( &csVirtual, &sigset );
2003 return status;
2004 }
2005
2006
2007 /***********************************************************************
2008 * NtProtectVirtualMemory (NTDLL.@)
2009 * ZwProtectVirtualMemory (NTDLL.@)
2010 */
2011 NTSTATUS WINAPI NtProtectVirtualMemory( HANDLE process, PVOID *addr_ptr, SIZE_T *size_ptr,
2012 ULONG new_prot, ULONG *old_prot )
2013 {
2014 struct file_view *view;
2015 sigset_t sigset;
2016 NTSTATUS status = STATUS_SUCCESS;
2017 char *base;
2018 BYTE vprot;
2019 unsigned int new_vprot;
2020 SIZE_T size = *size_ptr;
2021 LPVOID addr = *addr_ptr;
2022
2023 TRACE("%p %p %08lx %08x\n", process, addr, size, new_prot );
2024
2025 if (process != NtCurrentProcess())
2026 {
2027 apc_call_t call;
2028 apc_result_t result;
2029
2030 memset( &call, 0, sizeof(call) );
2031
2032 call.virtual_protect.type = APC_VIRTUAL_PROTECT;
2033 call.virtual_protect.addr = wine_server_client_ptr( addr );
2034 call.virtual_protect.size = size;
2035 call.virtual_protect.prot = new_prot;
2036 status = NTDLL_queue_process_apc( process, &call, &result );
2037 if (status != STATUS_SUCCESS) return status;
2038
2039 if (result.virtual_protect.status == STATUS_SUCCESS)
2040 {
2041 *addr_ptr = wine_server_get_ptr( result.virtual_protect.addr );
2042 *size_ptr = result.virtual_protect.size;
2043 if (old_prot) *old_prot = result.virtual_protect.prot;
2044 }
2045 return result.virtual_protect.status;
2046 }
2047
2048 /* Fix the parameters */
2049
2050 size = ROUND_SIZE( addr, size );
2051 base = ROUND_ADDR( addr, page_mask );
2052 if ((status = get_vprot_flags( new_prot, &new_vprot ))) return status;
2053 new_vprot |= VPROT_COMMITTED;
2054
2055 server_enter_uninterrupted_section( &csVirtual, &sigset );
2056
2057 if (!(view = VIRTUAL_FindView( base, size )))
2058 {
2059 status = STATUS_INVALID_PARAMETER;
2060 }
2061 else
2062 {
2063 /* Make sure all the pages are committed */
2064 if (get_committed_size( view, base, &vprot ) >= size && (vprot & VPROT_COMMITTED))
2065 {
2066 if (old_prot) *old_prot = VIRTUAL_GetWin32Prot( vprot );
2067 if (!VIRTUAL_SetProt( view, base, size, new_vprot )) status = STATUS_ACCESS_DENIED;
2068 }
2069 else status = STATUS_NOT_COMMITTED;
2070 }
2071 server_leave_uninterrupted_section( &csVirtual, &sigset );
2072
2073 if (status == STATUS_SUCCESS)
2074 {
2075 *addr_ptr = base;
2076 *size_ptr = size;
2077 }
2078 return status;
2079 }
2080
2081
2082 /* retrieve state for a free memory area; callback for wine_mmap_enum_reserved_areas */
2083 static int get_free_mem_state_callback( void *start, size_t size, void *arg )
2084 {
2085 MEMORY_BASIC_INFORMATION *info = arg;
2086 void *end = (char *)start + size;
2087
2088 if ((char *)info->BaseAddress + info->RegionSize < (char *)start) return 0;
2089
2090 if (info->BaseAddress >= end)
2091 {
2092 if (info->AllocationBase < end) info->AllocationBase = end;
2093 return 0;
2094 }
2095
2096 if (info->BaseAddress >= start || start <= address_space_start)
2097 {
2098 /* it's a real free area */
2099 info->State = MEM_FREE;
2100 info->Protect = PAGE_NOACCESS;
2101 info->AllocationBase = 0;
2102 info->AllocationProtect = 0;
2103 info->Type = 0;
2104 if ((char *)info->BaseAddress + info->RegionSize > (char *)end)
2105 info->RegionSize = (char *)end - (char *)info->BaseAddress;
2106 }
2107 else /* outside of the reserved area, pretend it's allocated */
2108 {
2109 info->RegionSize = (char *)start - (char *)info->BaseAddress;
2110 info->State = MEM_RESERVE;
2111 info->Protect = PAGE_NOACCESS;
2112 info->AllocationProtect = PAGE_NOACCESS;
2113 info->Type = MEM_PRIVATE;
2114 }
2115 return 1;
2116 }
2117
2118 #define UNIMPLEMENTED_INFO_CLASS(c) \
2119 case c: \
2120 FIXME("(process=%p,addr=%p) Unimplemented information class: " #c "\n", process, addr); \
2121 return STATUS_INVALID_INFO_CLASS
2122
2123 /***********************************************************************
2124 * NtQueryVirtualMemory (NTDLL.@)
2125 * ZwQueryVirtualMemory (NTDLL.@)
2126 */
2127 NTSTATUS WINAPI NtQueryVirtualMemory( HANDLE process, LPCVOID addr,
2128 MEMORY_INFORMATION_CLASS info_class, PVOID buffer,
2129 SIZE_T len, SIZE_T *res_len )
2130 {
2131 struct file_view *view;
2132 char *base, *alloc_base = 0;
2133 struct list *ptr;
2134 SIZE_T size = 0;
2135 MEMORY_BASIC_INFORMATION *info = buffer;
2136 sigset_t sigset;
2137
2138 if (info_class != MemoryBasicInformation)
2139 {
2140 switch(info_class)
2141 {
2142 UNIMPLEMENTED_INFO_CLASS(MemoryWorkingSetList);
2143 UNIMPLEMENTED_INFO_CLASS(MemorySectionName);
2144 UNIMPLEMENTED_INFO_CLASS(MemoryBasicVlmInformation);
2145
2146 default:
2147 FIXME("(%p,%p,info_class=%d,%p,%ld,%p) Unknown information class\n",
2148 process, addr, info_class, buffer, len, res_len);
2149 return STATUS_INVALID_INFO_CLASS;
2150 }
2151 }
2152
2153 if (process != NtCurrentProcess())
2154 {
2155 NTSTATUS status;
2156 apc_call_t call;
2157 apc_result_t result;
2158
2159 memset( &call, 0, sizeof(call) );
2160
2161 call.virtual_query.type = APC_VIRTUAL_QUERY;
2162 call.virtual_query.addr = wine_server_client_ptr( addr );
2163 status = NTDLL_queue_process_apc( process, &call, &result );
2164 if (status != STATUS_SUCCESS) return status;
2165
2166 if (result.virtual_query.status == STATUS_SUCCESS)
2167 {
2168 info->BaseAddress = wine_server_get_ptr( result.virtual_query.base );
2169 info->AllocationBase = wine_server_get_ptr( result.virtual_query.alloc_base );
2170 info->RegionSize = result.virtual_query.size;
2171 info->Protect = result.virtual_query.prot;
2172 info->AllocationProtect = result.virtual_query.alloc_prot;
2173 info->State = (DWORD)result.virtual_query.state << 12;
2174 info->Type = (DWORD)result.virtual_query.alloc_type << 16;
2175 if (info->RegionSize != result.virtual_query.size) /* truncated */
2176 return STATUS_INVALID_PARAMETER; /* FIXME */
2177 if (res_len) *res_len = sizeof(*info);
2178 }
2179 return result.virtual_query.status;
2180 }
2181
2182 base = ROUND_ADDR( addr, page_mask );
2183
2184 if (is_beyond_limit( base, 1, working_set_limit )) return STATUS_WORKING_SET_LIMIT_RANGE;
2185
2186 /* Find the view containing the address */
2187
2188 server_enter_uninterrupted_section( &csVirtual, &sigset );
2189 ptr = list_head( &views_list );
2190 for (;;)
2191 {
2192 if (!ptr)
2193 {
2194 size = (char *)working_set_limit - alloc_base;
2195 view = NULL;
2196 break;
2197 }
2198 view = LIST_ENTRY( ptr, struct file_view, entry );
2199 if ((char *)view->base > base)
2200 {
2201 size = (char *)view->base - alloc_base;
2202 view = NULL;
2203 break;
2204 }
2205 if ((char *)view->base + view->size > base)
2206 {
2207 alloc_base = view->base;
2208 size = view->size;
2209 break;
2210 }
2211 alloc_base = (char *)view->base + view->size;
2212 ptr = list_next( &views_list, ptr );
2213 }
2214
2215 /* Fill the info structure */
2216
2217 info->AllocationBase = alloc_base;
2218 info->BaseAddress = base;
2219 info->RegionSize = size - (base - alloc_base);
2220
2221 if (!view)
2222 {
2223 if (!wine_mmap_enum_reserved_areas( get_free_mem_state_callback, info, 0 ))
2224 {
2225 /* not in a reserved area at all, pretend it's allocated */
2226 #ifdef __i386__
2227 if (base >= (char *)address_space_start)
2228 {
2229 info->State = MEM_RESERVE;
2230 info->Protect = PAGE_NOACCESS;
2231 info->AllocationProtect = PAGE_NOACCESS;
2232 info->Type = MEM_PRIVATE;
2233 }
2234 else
2235 #endif
2236 {
2237 info->State = MEM_FREE;
2238 info->Protect = PAGE_NOACCESS;
2239 info->AllocationBase = 0;
2240 info->AllocationProtect = 0;
2241 info->Type = 0;
2242 }
2243 }
2244 }
2245 else
2246 {
2247 BYTE vprot;
2248 SIZE_T range_size = get_committed_size( view, base, &vprot );
2249
2250 info->State = (vprot & VPROT_COMMITTED) ? MEM_COMMIT : MEM_RESERVE;
2251 info->Protect = (vprot & VPROT_COMMITTED) ? VIRTUAL_GetWin32Prot( vprot ) : 0;
2252 info->AllocationBase = alloc_base;
2253 info->AllocationProtect = VIRTUAL_GetWin32Prot( view->protect );
2254 if (view->protect & VPROT_IMAGE) info->Type = MEM_IMAGE;
2255 else if (view->protect & VPROT_VALLOC) info->Type = MEM_PRIVATE;
2256 else info->Type = MEM_MAPPED;
2257 for (size = base - alloc_base; size < base + range_size - alloc_base; size += page_size)
2258 if ((view->prot[size >> page_shift] ^ vprot) & ~VPROT_WRITEWATCH) break;
2259 info->RegionSize = size - (base - alloc_base);
2260 }
2261 server_leave_uninterrupted_section( &csVirtual, &sigset );
2262
2263 if (res_len) *res_len = sizeof(*info);
2264 return STATUS_SUCCESS;
2265 }
2266
2267
2268 /***********************************************************************
2269 * NtLockVirtualMemory (NTDLL.@)
2270 * ZwLockVirtualMemory (NTDLL.@)
2271 */
2272 NTSTATUS WINAPI NtLockVirtualMemory( HANDLE process, PVOID *addr, SIZE_T *size, ULONG unknown )
2273 {
2274 NTSTATUS status = STATUS_SUCCESS;
2275
2276 if (process != NtCurrentProcess())
2277 {
2278 apc_call_t call;
2279 apc_result_t result;
2280
2281 memset( &call, 0, sizeof(call) );
2282
2283 call.virtual_lock.type = APC_VIRTUAL_LOCK;
2284 call.virtual_lock.addr = wine_server_client_ptr( *addr );
2285 call.virtual_lock.size = *size;
2286 status = NTDLL_queue_process_apc( process, &call, &result );
2287 if (status != STATUS_SUCCESS) return status;
2288
2289 if (result.virtual_lock.status == STATUS_SUCCESS)
2290 {
2291 *addr = wine_server_get_ptr( result.virtual_lock.addr );
2292 *size = result.virtual_lock.size;
2293 }
2294 return result.virtual_lock.status;
2295 }
2296
2297 *size = ROUND_SIZE( *addr, *size );
2298 *addr = ROUND_ADDR( *addr, page_mask );
2299
2300 if (mlock( *addr, *size )) status = STATUS_ACCESS_DENIED;
2301 return status;
2302 }
2303
2304
2305 /***********************************************************************
2306 * NtUnlockVirtualMemory (NTDLL.@)
2307 * ZwUnlockVirtualMemory (NTDLL.@)
2308 */
2309 NTSTATUS WINAPI NtUnlockVirtualMemory( HANDLE process, PVOID *addr, SIZE_T *size, ULONG unknown )
2310 {
2311 NTSTATUS status = STATUS_SUCCESS;
2312
2313 if (process != NtCurrentProcess())
2314 {
2315 apc_call_t call;
2316 apc_result_t result;
2317
2318 memset( &call, 0, sizeof(call) );
2319
2320 call.virtual_unlock.type = APC_VIRTUAL_UNLOCK;
2321 call.virtual_unlock.addr = wine_server_client_ptr( *addr );
2322 call.virtual_unlock.size = *size;
2323 status = NTDLL_queue_process_apc( process, &call, &result );
2324 if (status != STATUS_SUCCESS) return status;
2325
2326 if (result.virtual_unlock.status == STATUS_SUCCESS)
2327 {
2328 *addr = wine_server_get_ptr( result.virtual_unlock.addr );
2329 *size = result.virtual_unlock.size;
2330 }
2331 return result.virtual_unlock.status;
2332 }
2333
2334 *size = ROUND_SIZE( *addr, *size );
2335 *addr = ROUND_ADDR( *addr, page_mask );
2336
2337 if (munlock( *addr, *size )) status = STATUS_ACCESS_DENIED;
2338 return status;
2339 }
2340
2341
2342 /***********************************************************************
2343 * NtCreateSection (NTDLL.@)
2344 * ZwCreateSection (NTDLL.@)
2345 */
2346 NTSTATUS WINAPI NtCreateSection( HANDLE *handle, ACCESS_MASK access, const OBJECT_ATTRIBUTES *attr,
2347 const LARGE_INTEGER *size, ULONG protect,
2348 ULONG sec_flags, HANDLE file )
2349 {
2350 NTSTATUS ret;
2351 unsigned int vprot;
2352 DWORD len = (attr && attr->ObjectName) ? attr->ObjectName->Length : 0;
2353 struct security_descriptor *sd = NULL;
2354 struct object_attributes objattr;
2355
2356 /* Check parameters */
2357
2358 if (len > MAX_PATH*sizeof(WCHAR)) return STATUS_NAME_TOO_LONG;
2359
2360 if ((ret = get_vprot_flags( protect, &vprot ))) return ret;
2361
2362 objattr.rootdir = wine_server_obj_handle( attr ? attr->RootDirectory : 0 );
2363 objattr.sd_len = 0;
2364 objattr.name_len = len;
2365 if (attr)
2366 {
2367 ret = NTDLL_create_struct_sd( attr->SecurityDescriptor, &sd, &objattr.sd_len );
2368 if (ret != STATUS_SUCCESS) return ret;
2369 }
2370
2371 if (!(sec_flags & SEC_RESERVE)) vprot |= VPROT_COMMITTED;
2372 if (sec_flags & SEC_NOCACHE) vprot |= VPROT_NOCACHE;
2373 if (sec_flags & SEC_IMAGE) vprot |= VPROT_IMAGE;
2374
2375 /* Create the server object */
2376
2377 SERVER_START_REQ( create_mapping )
2378 {
2379 req->access = access;
2380 req->attributes = (attr) ? attr->Attributes : 0;
2381 req->file_handle = wine_server_obj_handle( file );
2382 req->size = size ? size->QuadPart : 0;
2383 req->protect = vprot;
2384 wine_server_add_data( req, &objattr, sizeof(objattr) );
2385 if (objattr.sd_len) wine_server_add_data( req, sd, objattr.sd_len );
2386 if (len) wine_server_add_data( req, attr->ObjectName->Buffer, len );
2387 ret = wine_server_call( req );
2388 *handle = wine_server_ptr_handle( reply->handle );
2389 }
2390 SERVER_END_REQ;
2391
2392 NTDLL_free_struct_sd( sd );
2393
2394 return ret;
2395 }
2396
2397
2398 /***********************************************************************
2399 * NtOpenSection (NTDLL.@)
2400 * ZwOpenSection (NTDLL.@)
2401 */
2402 NTSTATUS WINAPI NtOpenSection( HANDLE *handle, ACCESS_MASK access, const OBJECT_ATTRIBUTES *attr )
2403 {
2404 NTSTATUS ret;
2405 DWORD len = attr->ObjectName->Length;
2406
2407 if (len > MAX_PATH*sizeof(WCHAR)) return STATUS_NAME_TOO_LONG;
2408
2409 SERVER_START_REQ( open_mapping )
2410 {
2411 req->access = access;
2412 req->attributes = attr->Attributes;
2413 req->rootdir = wine_server_obj_handle( attr->RootDirectory );
2414 wine_server_add_data( req, attr->ObjectName->Buffer, len );
2415 if (!(ret = wine_server_call( req ))) *handle = wine_server_ptr_handle( reply->handle );
2416 }
2417 SERVER_END_REQ;
2418 return ret;
2419 }
2420
2421
2422 /***********************************************************************
2423 * NtMapViewOfSection (NTDLL.@)
2424 * ZwMapViewOfSection (NTDLL.@)
2425 */
2426 NTSTATUS WINAPI NtMapViewOfSection( HANDLE handle, HANDLE process, PVOID *addr_ptr, ULONG zero_bits,
2427 SIZE_T commit_size, const LARGE_INTEGER *offset_ptr, SIZE_T *size_ptr,
2428 SECTION_INHERIT inherit, ULONG alloc_type, ULONG protect )
2429 {
2430 NTSTATUS res;
2431 mem_size_t full_size;
2432 ACCESS_MASK access;
2433 SIZE_T size, mask = get_mask( zero_bits );
2434 int unix_handle = -1, needs_close;
2435 unsigned int map_vprot, vprot;
2436 void *base;
2437 struct file_view *view;
2438 DWORD header_size;
2439 HANDLE dup_mapping, shared_file;
2440 LARGE_INTEGER offset;
2441 sigset_t sigset;
2442
2443 offset.QuadPart = offset_ptr ? offset_ptr->QuadPart : 0;
2444
2445 TRACE("handle=%p process=%p addr=%p off=%x%08x size=%lx access=%x\n",
2446 handle, process, *addr_ptr, offset.u.HighPart, offset.u.LowPart, *size_ptr, protect );
2447
2448 /* Check parameters */
2449
2450 if ((offset.u.LowPart & mask) || (*addr_ptr && ((UINT_PTR)*addr_ptr & mask)))
2451 return STATUS_INVALID_PARAMETER;
2452
2453 switch(protect)
2454 {
2455 case PAGE_NOACCESS:
2456 access = 0;
2457 break;
2458 case PAGE_READWRITE:
2459 case PAGE_EXECUTE_READWRITE:
2460 access = SECTION_MAP_WRITE;
2461 break;
2462 case PAGE_READONLY:
2463 case PAGE_WRITECOPY:
2464 case PAGE_EXECUTE:
2465 case PAGE_EXECUTE_READ:
2466 case PAGE_EXECUTE_WRITECOPY:
2467 access = SECTION_MAP_READ;
2468 break;
2469 default:
2470 return STATUS_INVALID_PARAMETER;
2471 }
2472
2473 if (process != NtCurrentProcess())
2474 {
2475 apc_call_t call;
2476 apc_result_t result;
2477
2478 memset( &call, 0, sizeof(call) );
2479
2480 call.map_view.type = APC_MAP_VIEW;
2481 call.map_view.handle = wine_server_obj_handle( handle );
2482 call.map_view.addr = wine_server_client_ptr( *addr_ptr );
2483 call.map_view.size = *size_ptr;
2484 call.map_view.offset = offset.QuadPart;
2485 call.map_view.zero_bits = zero_bits;
2486 call.map_view.alloc_type = alloc_type;
2487 call.map_view.prot = protect;
2488 res = NTDLL_queue_process_apc( process, &call, &result );
2489 if (res != STATUS_SUCCESS) return res;
2490
2491 if ((NTSTATUS)result.map_view.status >= 0)
2492 {
2493 *addr_ptr = wine_server_get_ptr( result.map_view.addr );
2494 *size_ptr = result.map_view.size;
2495 }
2496 return result.map_view.status;
2497 }
2498
2499 SERVER_START_REQ( get_mapping_info )
2500 {
2501 req->handle = wine_server_obj_handle( handle );
2502 req->access = access;
2503 res = wine_server_call( req );
2504 map_vprot = reply->protect;
2505 base = wine_server_get_ptr( reply->base );
2506 full_size = reply->size;
2507 header_size = reply->header_size;
2508 dup_mapping = wine_server_ptr_handle( reply->mapping );
2509 shared_file = wine_server_ptr_handle( reply->shared_file );
2510 if ((ULONG_PTR)base != reply->base) base = NULL;
2511 }
2512 SERVER_END_REQ;
2513 if (res) return res;
2514
2515 if ((res = server_get_unix_fd( handle, 0, &unix_handle, &needs_close, NULL, NULL ))) goto done;
2516
2517 if (map_vprot & VPROT_IMAGE)
2518 {
2519 size = full_size;
2520 if (size != full_size) /* truncated */
2521 {
2522 WARN( "Modules larger than 4Gb (%s) not supported\n", wine_dbgstr_longlong(full_size) );
2523 res = STATUS_INVALID_PARAMETER;
2524 goto done;
2525 }
2526 if (shared_file)
2527 {
2528 int shared_fd, shared_needs_close;
2529
2530 if ((res = server_get_unix_fd( shared_file, FILE_READ_DATA|FILE_WRITE_DATA,
2531 &shared_fd, &shared_needs_close, NULL, NULL ))) goto done;
2532 res = map_image( handle, unix_handle, base, size, mask, header_size,
2533 shared_fd, dup_mapping, addr_ptr );
2534 if (shared_needs_close) close( shared_fd );
2535 NtClose( shared_file );
2536 }
2537 else
2538 {
2539 res = map_image( handle, unix_handle, base, size, mask, header_size,
2540 -1, dup_mapping, addr_ptr );
2541 }
2542 if (needs_close) close( unix_handle );
2543 if (res >= 0) *size_ptr = size;
2544 return res;
2545 }
2546
2547 res = STATUS_INVALID_PARAMETER;
2548 if (offset.QuadPart >= full_size) goto done;
2549 if (*size_ptr)
2550 {
2551 if (*size_ptr > full_size - offset.QuadPart) goto done;
2552 size = ROUND_SIZE( offset.u.LowPart, *size_ptr );
2553 if (size < *size_ptr) goto done; /* wrap-around */
2554 }
2555 else
2556 {
2557 size = full_size - offset.QuadPart;
2558 if (size != full_size - offset.QuadPart) /* truncated */
2559 {
2560 WARN( "Files larger than 4Gb (%s) not supported on this platform\n",
2561 wine_dbgstr_longlong(full_size) );
2562 goto done;
2563 }
2564 }
2565
2566 /* Reserve a properly aligned area */
2567
2568 server_enter_uninterrupted_section( &csVirtual, &sigset );
2569
2570 get_vprot_flags( protect, &vprot );
2571 vprot |= (map_vprot & VPROT_COMMITTED);
2572 res = map_view( &view, *addr_ptr, size, mask, FALSE, vprot );
2573 if (res)
2574 {
2575 server_leave_uninterrupted_section( &csVirtual, &sigset );
2576 goto done;
2577 }
2578
2579 /* Map the file */
2580
2581 TRACE("handle=%p size=%lx offset=%x%08x\n",
2582 handle, size, offset.u.HighPart, offset.u.LowPart );
2583
2584 res = map_file_into_view( view, unix_handle, 0, size, offset.QuadPart, vprot, !dup_mapping );
2585 if (res == STATUS_SUCCESS)
2586 {
2587 *addr_ptr = view->base;
2588 *size_ptr = size;
2589 view->mapping = dup_mapping;
2590 dup_mapping = 0; /* don't close it */
2591 }
2592 else
2593 {
2594 ERR( "map_file_into_view %p %lx %x%08x failed\n",
2595 view->base, size, offset.u.HighPart, offset.u.LowPart );
2596 delete_view( view );
2597 }
2598
2599 server_leave_uninterrupted_section( &csVirtual, &sigset );
2600
2601 done:
2602 if (dup_mapping) NtClose( dup_mapping );
2603 if (needs_close) close( unix_handle );
2604 return res;
2605 }
2606
2607
2608 /***********************************************************************
2609 * NtUnmapViewOfSection (NTDLL.@)
2610 * ZwUnmapViewOfSection (NTDLL.@)
2611 */
2612 NTSTATUS WINAPI NtUnmapViewOfSection( HANDLE process, PVOID addr )
2613 {
2614 struct file_view *view;
2615 NTSTATUS status = STATUS_NOT_MAPPED_VIEW;
2616 sigset_t sigset;
2617 void *base = ROUND_ADDR( addr, page_mask );
2618
2619 if (process != NtCurrentProcess())
2620 {
2621 apc_call_t call;
2622 apc_result_t result;
2623
2624 memset( &call, 0, sizeof(call) );
2625
2626 call.unmap_view.type = APC_UNMAP_VIEW;
2627 call.unmap_view.addr = wine_server_client_ptr( addr );
2628 status = NTDLL_queue_process_apc( process, &call, &result );
2629 if (status == STATUS_SUCCESS) status = result.unmap_view.status;
2630 return status;
2631 }
2632
2633 server_enter_uninterrupted_section( &csVirtual, &sigset );
2634 if ((view = VIRTUAL_FindView( base, 0 )) && (base == view->base) && !(view->protect & VPROT_VALLOC))
2635 {
2636 delete_view( view );
2637 status = STATUS_SUCCESS;
2638 }
2639 server_leave_uninterrupted_section( &csVirtual, &sigset );
2640 return status;
2641 }
2642
2643
2644 /***********************************************************************
2645 * NtFlushVirtualMemory (NTDLL.@)
2646 * ZwFlushVirtualMemory (NTDLL.@)
2647 */
2648 NTSTATUS WINAPI NtFlushVirtualMemory( HANDLE process, LPCVOID *addr_ptr,
2649 SIZE_T *size_ptr, ULONG unknown )
2650 {
2651 struct file_view *view;
2652 NTSTATUS status = STATUS_SUCCESS;
2653 sigset_t sigset;
2654 void *addr = ROUND_ADDR( *addr_ptr, page_mask );
2655
2656 if (process != NtCurrentProcess())
2657 {
2658 apc_call_t call;
2659 apc_result_t result;
2660
2661 memset( &call, 0, sizeof(call) );
2662
2663 call.virtual_flush.type = APC_VIRTUAL_FLUSH;
2664 call.virtual_flush.addr = wine_server_client_ptr( addr );
2665 call.virtual_flush.size = *size_ptr;
2666 status = NTDLL_queue_process_apc( process, &call, &result );
2667 if (status != STATUS_SUCCESS) return status;
2668
2669 if (result.virtual_flush.status == STATUS_SUCCESS)
2670 {
2671 *addr_ptr = wine_server_get_ptr( result.virtual_flush.addr );
2672 *size_ptr = result.virtual_flush.size;
2673 }
2674 return result.virtual_flush.status;
2675 }
2676
2677 server_enter_uninterrupted_section( &csVirtual, &sigset );
2678 if (!(view = VIRTUAL_FindView( addr, *size_ptr ))) status = STATUS_INVALID_PARAMETER;
2679 else
2680 {
2681 if (!*size_ptr) *size_ptr = view->size;
2682 *addr_ptr = addr;
2683 if (msync( addr, *size_ptr, MS_SYNC )) status = STATUS_NOT_MAPPED_DATA;
2684 }
2685 server_leave_uninterrupted_section( &csVirtual, &sigset );
2686 return status;
2687 }
2688
2689
2690 /***********************************************************************
2691 * NtGetWriteWatch (NTDLL.@)
2692 * ZwGetWriteWatch (NTDLL.@)
2693 */
2694 NTSTATUS WINAPI NtGetWriteWatch( HANDLE process, ULONG flags, PVOID base, SIZE_T size, PVOID *addresses,
2695 ULONG_PTR *count, ULONG *granularity )
2696 {
2697 struct file_view *view;
2698 NTSTATUS status = STATUS_SUCCESS;
2699 sigset_t sigset;
2700
2701 size = ROUND_SIZE( base, size );
2702 base = ROUND_ADDR( base, page_mask );
2703
2704 if (!count || !granularity) return STATUS_ACCESS_VIOLATION;
2705 if (!*count || !size) return STATUS_INVALID_PARAMETER;
2706 if (flags & ~WRITE_WATCH_FLAG_RESET) return STATUS_INVALID_PARAMETER;
2707
2708 if (!addresses) return STATUS_ACCESS_VIOLATION;
2709
2710 TRACE( "%p %x %p-%p %p %lu\n", process, flags, base, (char *)base + size,
2711 addresses, *count );
2712
2713 server_enter_uninterrupted_section( &csVirtual, &sigset );
2714
2715 if ((view = VIRTUAL_FindView( base, size )) && (view->protect & VPROT_WRITEWATCH))
2716 {
2717 ULONG_PTR pos = 0;
2718 char *addr = base;
2719 char *end = addr + size;
2720
2721 while (pos < *count && addr < end)
2722 {
2723 BYTE prot = view->prot[(addr - (char *)view->base) >> page_shift];
2724 if (!(prot & VPROT_WRITEWATCH)) addresses[pos++] = addr;
2725 addr += page_size;
2726 }
2727 if (flags & WRITE_WATCH_FLAG_RESET) reset_write_watches( view, base, addr - (char *)base );
2728 *count = pos;
2729 *granularity = page_size;
2730 }
2731 else status = STATUS_INVALID_PARAMETER;
2732
2733 server_leave_uninterrupted_section( &csVirtual, &sigset );
2734 return status;
2735 }
2736
2737
2738 /***********************************************************************
2739 * NtResetWriteWatch (NTDLL.@)
2740 * ZwResetWriteWatch (NTDLL.@)
2741 */
2742 NTSTATUS WINAPI NtResetWriteWatch( HANDLE process, PVOID base, SIZE_T size )
2743 {
2744 struct file_view *view;
2745 NTSTATUS status = STATUS_SUCCESS;
2746 sigset_t sigset;
2747
2748 size = ROUND_SIZE( base, size );
2749 base = ROUND_ADDR( base, page_mask );
2750
2751 TRACE( "%p %p-%p\n", process, base, (char *)base + size );
2752
2753 if (!size) return STATUS_INVALID_PARAMETER;
2754
2755 server_enter_uninterrupted_section( &csVirtual, &sigset );
2756
2757 if ((view = VIRTUAL_FindView( base, size )) && (view->protect & VPROT_WRITEWATCH))
2758 reset_write_watches( view, base, size );
2759 else
2760 status = STATUS_INVALID_PARAMETER;
2761
2762 server_leave_uninterrupted_section( &csVirtual, &sigset );
2763 return status;
2764 }
2765
2766
2767 /***********************************************************************
2768 * NtReadVirtualMemory (NTDLL.@)
2769 * ZwReadVirtualMemory (NTDLL.@)
2770 */
2771 NTSTATUS WINAPI NtReadVirtualMemory( HANDLE process, const void *addr, void *buffer,
2772 SIZE_T size, SIZE_T *bytes_read )
2773 {
2774 NTSTATUS status;
2775
2776 if (virtual_check_buffer_for_write( buffer, size ))
2777 {
2778 SERVER_START_REQ( read_process_memory )
2779 {
2780 req->handle = wine_server_obj_handle( process );
2781 req->addr = wine_server_client_ptr( addr );
2782 wine_server_set_reply( req, buffer, size );
2783 if ((status = wine_server_call( req ))) size = 0;
2784 }
2785 SERVER_END_REQ;
2786 }
2787 else
2788 {
2789 status = STATUS_ACCESS_VIOLATION;
2790 size = 0;
2791 }
2792 if (bytes_read) *bytes_read = size;
2793 return status;
2794 }
2795
2796
2797 /***********************************************************************
2798 * NtWriteVirtualMemory (NTDLL.@)
2799 * ZwWriteVirtualMemory (NTDLL.@)
2800 */
2801 NTSTATUS WINAPI NtWriteVirtualMemory( HANDLE process, void *addr, const void *buffer,
2802 SIZE_T size, SIZE_T *bytes_written )
2803 {
2804 NTSTATUS status;
2805
2806 if (virtual_check_buffer_for_read( buffer, size ))
2807 {
2808 SERVER_START_REQ( write_process_memory )
2809 {
2810 req->handle = wine_server_obj_handle( process );
2811 req->addr = wine_server_client_ptr( addr );
2812 wine_server_add_data( req, buffer, size );
2813 if ((status = wine_server_call( req ))) size = 0;
2814 }
2815 SERVER_END_REQ;
2816 }
2817 else
2818 {
2819 status = STATUS_PARTIAL_COPY;
2820 size = 0;
2821 }
2822 if (bytes_written) *bytes_written = size;
2823 return status;
2824 }
2825
2826
2827 /***********************************************************************
2828 * NtAreMappedFilesTheSame (NTDLL.@)
2829 * ZwAreMappedFilesTheSame (NTDLL.@)
2830 */
2831 NTSTATUS WINAPI NtAreMappedFilesTheSame(PVOID addr1, PVOID addr2)
2832 {
2833 struct file_view *view1, *view2;
2834 struct stat st1, st2;
2835 NTSTATUS status;
2836 sigset_t sigset;
2837
2838 TRACE("%p %p\n", addr1, addr2);
2839
2840 server_enter_uninterrupted_section( &csVirtual, &sigset );
2841
2842 view1 = VIRTUAL_FindView( addr1, 0 );
2843 view2 = VIRTUAL_FindView( addr2, 0 );
2844
2845 if (!view1 || !view2)
2846 status = STATUS_INVALID_ADDRESS;
2847 else if ((view1->protect & VPROT_VALLOC) || (view2->protect & VPROT_VALLOC))
2848 status = STATUS_CONFLICTING_ADDRESSES;
2849 else if (!(view1->protect & VPROT_IMAGE) || !(view2->protect & VPROT_IMAGE))
2850 status = STATUS_NOT_SAME_DEVICE;
2851 else if (view1 == view2)
2852 status = STATUS_SUCCESS;
2853 else if (!stat_mapping_file( view1, &st1 ) && !stat_mapping_file( view2, &st2 ) &&
2854 st1.st_dev == st2.st_dev && st1.st_ino == st2.st_ino)
2855 status = STATUS_SUCCESS;
2856 else
2857 status = STATUS_NOT_SAME_DEVICE;
2858
2859 server_leave_uninterrupted_section( &csVirtual, &sigset );
2860 return status;
2861 }
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