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ntdll: Change the test for no relocation information to use the
[wine/multimedia.git] / dlls / ntdll / virtual.c
blob8f6296f04d87c78069f2f96523db798f55f1f8db
1 /*
2 * Win32 virtual memory functions
3 *
4 * Copyright 1997, 2002 Alexandre Julliard
5 *
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
10 *
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
15 *
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
19 */
20
21 #include "config.h"
22 #include "wine/port.h"
23
24 #include <assert.h>
25 #include <errno.h>
26 #ifdef HAVE_SYS_ERRNO_H
27 #include <sys/errno.h>
28 #endif
29 #include <fcntl.h>
30 #ifdef HAVE_UNISTD_H
31 # include <unistd.h>
32 #endif
33 #include <stdarg.h>
34 #include <stdlib.h>
35 #include <stdio.h>
36 #include <string.h>
37 #include <sys/types.h>
38 #ifdef HAVE_SYS_STAT_H
39 # include <sys/stat.h>
40 #endif
41 #ifdef HAVE_SYS_MMAN_H
42 # include <sys/mman.h>
43 #endif
44
45 #define NONAMELESSUNION
46 #define NONAMELESSSTRUCT
47 #include "ntstatus.h"
48 #define WIN32_NO_STATUS
49 #include "windef.h"
50 #include "winternl.h"
51 #include "winioctl.h"
52 #include "wine/library.h"
53 #include "wine/server.h"
54 #include "wine/list.h"
55 #include "wine/debug.h"
56 #include "ntdll_misc.h"
57
58 WINE_DEFAULT_DEBUG_CHANNEL(virtual);
59 WINE_DECLARE_DEBUG_CHANNEL(module);
60
61 #ifndef MS_SYNC
62 #define MS_SYNC 0
63 #endif
64
65 #ifndef MAP_NORESERVE
66 #define MAP_NORESERVE 0
67 #endif
68
69 /* File view */
70 typedef struct file_view
71 {
72 struct list entry; /* Entry in global view list */
73 void *base; /* Base address */
74 size_t size; /* Size in bytes */
75 HANDLE mapping; /* Handle to the file mapping */
76 BYTE flags; /* Allocation flags (VFLAG_*) */
77 BYTE protect; /* Protection for all pages at allocation time */
78 BYTE prot[1]; /* Protection byte for each page */
79 } FILE_VIEW;
80
81 /* Per-view flags */
82 #define VFLAG_SYSTEM 0x01 /* system view (underlying mmap not under our control) */
83 #define VFLAG_VALLOC 0x02 /* allocated by VirtualAlloc */
84
85 /* Conversion from VPROT_* to Win32 flags */
86 static const BYTE VIRTUAL_Win32Flags[16] =
87 {
88 PAGE_NOACCESS, /* 0 */
89 PAGE_READONLY, /* READ */
90 PAGE_READWRITE, /* WRITE */
91 PAGE_READWRITE, /* READ | WRITE */
92 PAGE_EXECUTE, /* EXEC */
93 PAGE_EXECUTE_READ, /* READ | EXEC */
94 PAGE_EXECUTE_READWRITE, /* WRITE | EXEC */
95 PAGE_EXECUTE_READWRITE, /* READ | WRITE | EXEC */
96 PAGE_WRITECOPY, /* WRITECOPY */
97 PAGE_WRITECOPY, /* READ | WRITECOPY */
98 PAGE_WRITECOPY, /* WRITE | WRITECOPY */
99 PAGE_WRITECOPY, /* READ | WRITE | WRITECOPY */
100 PAGE_EXECUTE_WRITECOPY, /* EXEC | WRITECOPY */
101 PAGE_EXECUTE_WRITECOPY, /* READ | EXEC | WRITECOPY */
102 PAGE_EXECUTE_WRITECOPY, /* WRITE | EXEC | WRITECOPY */
103 PAGE_EXECUTE_WRITECOPY /* READ | WRITE | EXEC | WRITECOPY */
104 };
105
106 static struct list views_list = LIST_INIT(views_list);
107
108 static RTL_CRITICAL_SECTION csVirtual;
109 static RTL_CRITICAL_SECTION_DEBUG critsect_debug =
110 {
111 0, 0, &csVirtual,
112 { &critsect_debug.ProcessLocksList, &critsect_debug.ProcessLocksList },
113 0, 0, { (DWORD_PTR)(__FILE__ ": csVirtual") }
114 };
115 static RTL_CRITICAL_SECTION csVirtual = { &critsect_debug, -1, 0, 0, 0, 0 };
116
117 #ifdef __i386__
118 /* These are always the same on an i386, and it will be faster this way */
119 # define page_mask 0xfff
120 # define page_shift 12
121 # define page_size 0x1000
122 /* Note: these are Windows limits, you cannot change them. */
123 # define ADDRESS_SPACE_LIMIT ((void *)0xc0000000) /* top of the total available address space */
124 # define USER_SPACE_LIMIT ((void *)0x7fff0000) /* top of the user address space */
125 #else
126 static UINT page_shift;
127 static UINT page_size;
128 static UINT_PTR page_mask;
129 # define ADDRESS_SPACE_LIMIT 0 /* no limit needed on other platforms */
130 # define USER_SPACE_LIMIT 0 /* no limit needed on other platforms */
131 #endif /* __i386__ */
132 static const UINT_PTR granularity_mask = 0xffff; /* Allocation granularity (usually 64k) */
133
134 #define ROUND_ADDR(addr,mask) \
135 ((void *)((UINT_PTR)(addr) & ~(UINT_PTR)(mask)))
136
137 #define ROUND_SIZE(addr,size) \
138 (((UINT)(size) + ((UINT_PTR)(addr) & page_mask) + page_mask) & ~page_mask)
139
140 #define VIRTUAL_DEBUG_DUMP_VIEW(view) \
141 do { if (TRACE_ON(virtual)) VIRTUAL_DumpView(view); } while (0)
142
143 static void *user_space_limit = USER_SPACE_LIMIT;
144
145
146 /***********************************************************************
147 * VIRTUAL_GetProtStr
148 */
149 static const char *VIRTUAL_GetProtStr( BYTE prot )
150 {
151 static char buffer[6];
152 buffer[0] = (prot & VPROT_COMMITTED) ? 'c' : '-';
153 buffer[1] = (prot & VPROT_GUARD) ? 'g' : '-';
154 buffer[2] = (prot & VPROT_READ) ? 'r' : '-';
155 buffer[3] = (prot & VPROT_WRITECOPY) ? 'W' : ((prot & VPROT_WRITE) ? 'w' : '-');
156 buffer[4] = (prot & VPROT_EXEC) ? 'x' : '-';
157 buffer[5] = 0;
158 return buffer;
159 }
160
161
162 /***********************************************************************
163 * VIRTUAL_DumpView
164 */
165 static void VIRTUAL_DumpView( FILE_VIEW *view )
166 {
167 UINT i, count;
168 char *addr = view->base;
169 BYTE prot = view->prot[0];
170
171 TRACE( "View: %p - %p", addr, addr + view->size - 1 );
172 if (view->flags & VFLAG_SYSTEM)
173 TRACE( " (system)\n" );
174 else if (view->flags & VFLAG_VALLOC)
175 TRACE( " (valloc)\n" );
176 else if (view->mapping)
177 TRACE( " %p\n", view->mapping );
178 else
179 TRACE( " (anonymous)\n");
180
181 for (count = i = 1; i < view->size >> page_shift; i++, count++)
182 {
183 if (view->prot[i] == prot) continue;
184 TRACE( " %p - %p %s\n",
185 addr, addr + (count << page_shift) - 1, VIRTUAL_GetProtStr(prot) );
186 addr += (count << page_shift);
187 prot = view->prot[i];
188 count = 0;
189 }
190 if (count)
191 TRACE( " %p - %p %s\n",
192 addr, addr + (count << page_shift) - 1, VIRTUAL_GetProtStr(prot) );
193 }
194
195
196 /***********************************************************************
197 * VIRTUAL_Dump
198 */
199 void VIRTUAL_Dump(void)
200 {
201 struct file_view *view;
202
203 TRACE( "Dump of all virtual memory views:\n" );
204 RtlEnterCriticalSection(&csVirtual);
205 LIST_FOR_EACH_ENTRY( view, &views_list, FILE_VIEW, entry )
206 {
207 VIRTUAL_DumpView( view );
208 }
209 RtlLeaveCriticalSection(&csVirtual);
210 }
211
212
213 /***********************************************************************
214 * VIRTUAL_FindView
215 *
216 * Find the view containing a given address. The csVirtual section must be held by caller.
217 *
218 * PARAMS
219 * addr [I] Address
220 *
221 * RETURNS
222 * View: Success
223 * NULL: Failure
224 */
225 static struct file_view *VIRTUAL_FindView( const void *addr )
226 {
227 struct file_view *view;
228
229 LIST_FOR_EACH_ENTRY( view, &views_list, struct file_view, entry )
230 {
231 if (view->base > addr) break;
232 if ((const char*)view->base + view->size > (const char*)addr) return view;
233 }
234 return NULL;
235 }
236
237
238 /***********************************************************************
239 * find_view_range
240 *
241 * Find the first view overlapping at least part of the specified range.
242 * The csVirtual section must be held by caller.
243 */
244 static struct file_view *find_view_range( const void *addr, size_t size )
245 {
246 struct file_view *view;
247
248 LIST_FOR_EACH_ENTRY( view, &views_list, struct file_view, entry )
249 {
250 if ((const char *)view->base >= (const char *)addr + size) break;
251 if ((const char *)view->base + view->size > (const char *)addr) return view;
252 }
253 return NULL;
254 }
255
256
257 /***********************************************************************
258 * add_reserved_area
259 *
260 * Add a reserved area to the list maintained by libwine.
261 * The csVirtual section must be held by caller.
262 */
263 static void add_reserved_area( void *addr, size_t size )
264 {
265 TRACE( "adding %p-%p\n", addr, (char *)addr + size );
266
267 if (addr < user_space_limit)
268 {
269 /* unmap the part of the area that is below the limit */
270 assert( (char *)addr + size > (char *)user_space_limit );
271 munmap( addr, (char *)user_space_limit - (char *)addr );
272 size -= (char *)user_space_limit - (char *)addr;
273 addr = user_space_limit;
274 }
275 /* blow away existing mappings */
276 wine_anon_mmap( addr, size, PROT_NONE, MAP_NORESERVE | MAP_FIXED );
277 wine_mmap_add_reserved_area( addr, size );
278 }
279
280
281 /***********************************************************************
282 * remove_reserved_area
283 *
284 * Remove a reserved area from the list maintained by libwine.
285 * The csVirtual section must be held by caller.
286 */
287 static void remove_reserved_area( void *addr, size_t size )
288 {
289 struct file_view *view;
290
291 LIST_FOR_EACH_ENTRY( view, &views_list, struct file_view, entry )
292 {
293 if ((char *)view->base >= (char *)addr + size) break;
294 if ((char *)view->base + view->size <= (char *)addr) continue;
295 /* now we have an overlapping view */
296 if (view->base > addr)
297 {
298 wine_mmap_remove_reserved_area( addr, (char *)view->base - (char *)addr, TRUE );
299 size -= (char *)view->base - (char *)addr;
300 addr = view->base;
301 }
302 if ((char *)view->base + view->size >= (char *)addr + size)
303 {
304 /* view covers all the remaining area */
305 wine_mmap_remove_reserved_area( addr, size, FALSE );
306 size = 0;
307 break;
308 }
309 else /* view covers only part of the area */
310 {
311 wine_mmap_remove_reserved_area( addr, (char *)view->base + view->size - (char *)addr, FALSE );
312 size -= (char *)view->base + view->size - (char *)addr;
313 addr = (char *)view->base + view->size;
314 }
315 }
316 /* remove remaining space */
317 if (size) wine_mmap_remove_reserved_area( addr, size, TRUE );
318 }
319
320
321 /***********************************************************************
322 * is_beyond_limit
323 *
324 * Check if an address range goes beyond a given limit.
325 */
326 static inline int is_beyond_limit( void *addr, size_t size, void *limit )
327 {
328 return (limit && (addr >= limit || (char *)addr + size > (char *)limit));
329 }
330
331
332 /***********************************************************************
333 * unmap_area
334 *
335 * Unmap an area, or simply replace it by an empty mapping if it is
336 * in a reserved area. The csVirtual section must be held by caller.
337 */
338 static inline void unmap_area( void *addr, size_t size )
339 {
340 if (wine_mmap_is_in_reserved_area( addr, size ))
341 wine_anon_mmap( addr, size, PROT_NONE, MAP_NORESERVE | MAP_FIXED );
342 else if (is_beyond_limit( addr, size, user_space_limit ))
343 add_reserved_area( addr, size );
344 else
345 munmap( addr, size );
346 }
347
348
349 /***********************************************************************
350 * delete_view
351 *
352 * Deletes a view. The csVirtual section must be held by caller.
353 */
354 static void delete_view( struct file_view *view ) /* [in] View */
355 {
356 if (!(view->flags & VFLAG_SYSTEM)) unmap_area( view->base, view->size );
357 list_remove( &view->entry );
358 if (view->mapping) NtClose( view->mapping );
359 free( view );
360 }
361
362
363 /***********************************************************************
364 * create_view
365 *
366 * Create a view. The csVirtual section must be held by caller.
367 */
368 static NTSTATUS create_view( struct file_view **view_ret, void *base, size_t size, BYTE vprot )
369 {
370 struct file_view *view;
371 struct list *ptr;
372
373 assert( !((UINT_PTR)base & page_mask) );
374 assert( !(size & page_mask) );
375
376 /* Create the view structure */
377
378 if (!(view = malloc( sizeof(*view) + (size >> page_shift) - 1 ))) return STATUS_NO_MEMORY;
379
380 view->base = base;
381 view->size = size;
382 view->flags = 0;
383 view->mapping = 0;
384 view->protect = vprot;
385 memset( view->prot, vprot & ~VPROT_IMAGE, size >> page_shift );
386
387 /* Insert it in the linked list */
388
389 LIST_FOR_EACH( ptr, &views_list )
390 {
391 struct file_view *next = LIST_ENTRY( ptr, struct file_view, entry );
392 if (next->base > base) break;
393 }
394 list_add_before( ptr, &view->entry );
395
396 /* Check for overlapping views. This can happen if the previous view
397 * was a system view that got unmapped behind our back. In that case
398 * we recover by simply deleting it. */
399
400 if ((ptr = list_prev( &views_list, &view->entry )) != NULL)
401 {
402 struct file_view *prev = LIST_ENTRY( ptr, struct file_view, entry );
403 if ((char *)prev->base + prev->size > (char *)base)
404 {
405 TRACE( "overlapping prev view %p-%p for %p-%p\n",
406 prev->base, (char *)prev->base + prev->size,
407 base, (char *)base + view->size );
408 assert( prev->flags & VFLAG_SYSTEM );
409 delete_view( prev );
410 }
411 }
412 if ((ptr = list_next( &views_list, &view->entry )) != NULL)
413 {
414 struct file_view *next = LIST_ENTRY( ptr, struct file_view, entry );
415 if ((char *)base + view->size > (char *)next->base)
416 {
417 TRACE( "overlapping next view %p-%p for %p-%p\n",
418 next->base, (char *)next->base + next->size,
419 base, (char *)base + view->size );
420 assert( next->flags & VFLAG_SYSTEM );
421 delete_view( next );
422 }
423 }
424
425 *view_ret = view;
426 VIRTUAL_DEBUG_DUMP_VIEW( view );
427 return STATUS_SUCCESS;
428 }
429
430
431 /***********************************************************************
432 * VIRTUAL_GetUnixProt
433 *
434 * Convert page protections to protection for mmap/mprotect.
435 */
436 static int VIRTUAL_GetUnixProt( BYTE vprot )
437 {
438 int prot = 0;
439 if ((vprot & VPROT_COMMITTED) && !(vprot & VPROT_GUARD))
440 {
441 if (vprot & VPROT_READ) prot |= PROT_READ;
442 if (vprot & VPROT_WRITE) prot |= PROT_WRITE;
443 if (vprot & VPROT_WRITECOPY) prot |= PROT_WRITE;
444 if (vprot & VPROT_EXEC) prot |= PROT_EXEC;
445 }
446 if (!prot) prot = PROT_NONE;
447 return prot;
448 }
449
450
451 /***********************************************************************
452 * VIRTUAL_GetWin32Prot
453 *
454 * Convert page protections to Win32 flags.
455 */
456 static DWORD VIRTUAL_GetWin32Prot( BYTE vprot )
457 {
458 DWORD ret = VIRTUAL_Win32Flags[vprot & 0x0f];
459 if (vprot & VPROT_NOCACHE) ret |= PAGE_NOCACHE;
460 if (vprot & VPROT_GUARD) ret |= PAGE_GUARD;
461 return ret;
462 }
463
464
465 /***********************************************************************
466 * VIRTUAL_GetProt
467 *
468 * Build page protections from Win32 flags.
469 *
470 * PARAMS
471 * protect [I] Win32 protection flags
472 *
473 * RETURNS
474 * Value of page protection flags
475 */
476 static BYTE VIRTUAL_GetProt( DWORD protect )
477 {
478 BYTE vprot;
479
480 switch(protect & 0xff)
481 {
482 case PAGE_READONLY:
483 vprot = VPROT_READ;
484 break;
485 case PAGE_READWRITE:
486 vprot = VPROT_READ | VPROT_WRITE;
487 break;
488 case PAGE_WRITECOPY:
489 /* MSDN CreateFileMapping() states that if PAGE_WRITECOPY is given,
490 * that the hFile must have been opened with GENERIC_READ and
491 * GENERIC_WRITE access. This is WRONG as tests show that you
492 * only need GENERIC_READ access (at least for Win9x,
493 * FIXME: what about NT?). Thus, we don't put VPROT_WRITE in
494 * PAGE_WRITECOPY and PAGE_EXECUTE_WRITECOPY.
495 */
496 vprot = VPROT_READ | VPROT_WRITECOPY;
497 break;
498 case PAGE_EXECUTE:
499 vprot = VPROT_EXEC;
500 break;
501 case PAGE_EXECUTE_READ:
502 vprot = VPROT_EXEC | VPROT_READ;
503 break;
504 case PAGE_EXECUTE_READWRITE:
505 vprot = VPROT_EXEC | VPROT_READ | VPROT_WRITE;
506 break;
507 case PAGE_EXECUTE_WRITECOPY:
508 /* See comment for PAGE_WRITECOPY above */
509 vprot = VPROT_EXEC | VPROT_READ | VPROT_WRITECOPY;
510 break;
511 case PAGE_NOACCESS:
512 default:
513 vprot = 0;
514 break;
515 }
516 if (protect & PAGE_GUARD) vprot |= VPROT_GUARD;
517 if (protect & PAGE_NOCACHE) vprot |= VPROT_NOCACHE;
518 return vprot;
519 }
520
521
522 /***********************************************************************
523 * VIRTUAL_SetProt
524 *
525 * Change the protection of a range of pages.
526 *
527 * RETURNS
528 * TRUE: Success
529 * FALSE: Failure
530 */
531 static BOOL VIRTUAL_SetProt( FILE_VIEW *view, /* [in] Pointer to view */
532 void *base, /* [in] Starting address */
533 size_t size, /* [in] Size in bytes */
534 BYTE vprot ) /* [in] Protections to use */
535 {
536 TRACE("%p-%p %s\n",
537 base, (char *)base + size - 1, VIRTUAL_GetProtStr( vprot ) );
538
539 if (mprotect( base, size, VIRTUAL_GetUnixProt(vprot) ))
540 return FALSE; /* FIXME: last error */
541
542 memset( view->prot + (((char *)base - (char *)view->base) >> page_shift),
543 vprot, size >> page_shift );
544 VIRTUAL_DEBUG_DUMP_VIEW( view );
545 return TRUE;
546 }
547
548
549 /***********************************************************************
550 * unmap_extra_space
551 *
552 * Release the extra memory while keeping the range starting on the granularity boundary.
553 */
554 static inline void *unmap_extra_space( void *ptr, size_t total_size, size_t wanted_size, size_t mask )
555 {
556 if ((ULONG_PTR)ptr & mask)
557 {
558 size_t extra = mask + 1 - ((ULONG_PTR)ptr & mask);
559 munmap( ptr, extra );
560 ptr = (char *)ptr + extra;
561 total_size -= extra;
562 }
563 if (total_size > wanted_size)
564 munmap( (char *)ptr + wanted_size, total_size - wanted_size );
565 return ptr;
566 }
567
568
569 /***********************************************************************
570 * map_view
571 *
572 * Create a view and mmap the corresponding memory area.
573 * The csVirtual section must be held by caller.
574 */
575 static NTSTATUS map_view( struct file_view **view_ret, void *base, size_t size, BYTE vprot )
576 {
577 void *ptr;
578 NTSTATUS status;
579
580 if (base)
581 {
582 if (is_beyond_limit( base, size, ADDRESS_SPACE_LIMIT ))
583 return STATUS_WORKING_SET_LIMIT_RANGE;
584
585 switch (wine_mmap_is_in_reserved_area( base, size ))
586 {
587 case -1: /* partially in a reserved area */
588 return STATUS_CONFLICTING_ADDRESSES;
589
590 case 0: /* not in a reserved area, do a normal allocation */
591 if ((ptr = wine_anon_mmap( base, size, VIRTUAL_GetUnixProt(vprot), 0 )) == (void *)-1)
592 {
593 if (errno == ENOMEM) return STATUS_NO_MEMORY;
594 return STATUS_INVALID_PARAMETER;
595 }
596 if (ptr != base)
597 {
598 /* We couldn't get the address we wanted */
599 if (is_beyond_limit( ptr, size, user_space_limit )) add_reserved_area( ptr, size );
600 else munmap( ptr, size );
601 return STATUS_CONFLICTING_ADDRESSES;
602 }
603 break;
604
605 default:
606 case 1: /* in a reserved area, make sure the address is available */
607 if (find_view_range( base, size )) return STATUS_CONFLICTING_ADDRESSES;
608 /* replace the reserved area by our mapping */
609 if ((ptr = wine_anon_mmap( base, size, VIRTUAL_GetUnixProt(vprot), MAP_FIXED )) != base)
610 return STATUS_INVALID_PARAMETER;
611 break;
612 }
613 }
614 else
615 {
616 size_t view_size = size + granularity_mask + 1;
617
618 for (;;)
619 {
620 if ((ptr = wine_anon_mmap( NULL, view_size, VIRTUAL_GetUnixProt(vprot), 0 )) == (void *)-1)
621 {
622 if (errno == ENOMEM) return STATUS_NO_MEMORY;
623 return STATUS_INVALID_PARAMETER;
624 }
625 /* if we got something beyond the user limit, unmap it and retry */
626 if (is_beyond_limit( ptr, view_size, user_space_limit )) add_reserved_area( ptr, view_size );
627 else break;
628 }
629 ptr = unmap_extra_space( ptr, view_size, size, granularity_mask );
630 }
631
632 status = create_view( view_ret, ptr, size, vprot );
633 if (status != STATUS_SUCCESS) unmap_area( ptr, size );
634 return status;
635 }
636
637
638 /***********************************************************************
639 * unaligned_mmap
640 *
641 * Linux kernels before 2.4.x can support non page-aligned offsets, as
642 * long as the offset is aligned to the filesystem block size. This is
643 * a big performance gain so we want to take advantage of it.
644 *
645 * However, when we use 64-bit file support this doesn't work because
646 * glibc rejects unaligned offsets. Also glibc 2.1.3 mmap64 is broken
647 * in that it rounds unaligned offsets down to a page boundary. For
648 * these reasons we do a direct system call here.
649 */
650 static void *unaligned_mmap( void *addr, size_t length, unsigned int prot,
651 unsigned int flags, int fd, off_t offset )
652 {
653 #if defined(linux) && defined(__i386__) && defined(__GNUC__)
654 if (!(offset >> 32) && (offset & page_mask))
655 {
656 int ret;
657
658 struct
659 {
660 void *addr;
661 unsigned int length;
662 unsigned int prot;
663 unsigned int flags;
664 unsigned int fd;
665 unsigned int offset;
666 } args;
667
668 args.addr = addr;
669 args.length = length;
670 args.prot = prot;
671 args.flags = flags;
672 args.fd = fd;
673 args.offset = offset;
674
675 __asm__ __volatile__("push %%ebx\n\t"
676 "movl %2,%%ebx\n\t"
677 "int $0x80\n\t"
678 "popl %%ebx"
679 : "=a" (ret)
680 : "0" (90), /* SYS_mmap */
681 "q" (&args)
682 : "memory" );
683 if (ret < 0 && ret > -4096)
684 {
685 errno = -ret;
686 ret = -1;
687 }
688 return (void *)ret;
689 }
690 #endif
691 return mmap( addr, length, prot, flags, fd, offset );
692 }
693
694
695 /***********************************************************************
696 * map_file_into_view
697 *
698 * Wrapper for mmap() to map a file into a view, falling back to read if mmap fails.
699 * The csVirtual section must be held by caller.
700 */
701 static NTSTATUS map_file_into_view( struct file_view *view, int fd, size_t start, size_t size,
702 off_t offset, BYTE vprot, BOOL removable )
703 {
704 void *ptr;
705 int prot = VIRTUAL_GetUnixProt( vprot );
706 BOOL shared_write = (vprot & VPROT_WRITE) != 0;
707
708 assert( start < view->size );
709 assert( start + size <= view->size );
710
711 /* only try mmap if media is not removable (or if we require write access) */
712 if (!removable || shared_write)
713 {
714 int flags = MAP_FIXED | (shared_write ? MAP_SHARED : MAP_PRIVATE);
715
716 if (unaligned_mmap( (char *)view->base + start, size, prot, flags, fd, offset ) != (void *)-1)
717 goto done;
718
719 /* mmap() failed; if this is because the file offset is not */
720 /* page-aligned (EINVAL), or because the underlying filesystem */
721 /* does not support mmap() (ENOEXEC,ENODEV), we do it by hand. */
722 if ((errno != ENOEXEC) && (errno != EINVAL) && (errno != ENODEV)) return FILE_GetNtStatus();
723 if (shared_write) return FILE_GetNtStatus(); /* we cannot fake shared write mappings */
724 }
725
726 /* Reserve the memory with an anonymous mmap */
727 ptr = wine_anon_mmap( (char *)view->base + start, size, PROT_READ | PROT_WRITE, MAP_FIXED );
728 if (ptr == (void *)-1) return FILE_GetNtStatus();
729 /* Now read in the file */
730 pread( fd, ptr, size, offset );
731 if (prot != (PROT_READ|PROT_WRITE)) mprotect( ptr, size, prot ); /* Set the right protection */
732 done:
733 memset( view->prot + (start >> page_shift), vprot, ROUND_SIZE(start,size) >> page_shift );
734 return STATUS_SUCCESS;
735 }
736
737
738 /***********************************************************************
739 * decommit_view
740 *
741 * Decommit some pages of a given view.
742 * The csVirtual section must be held by caller.
743 */
744 static NTSTATUS decommit_pages( struct file_view *view, size_t start, size_t size )
745 {
746 if (wine_anon_mmap( (char *)view->base + start, size, PROT_NONE, MAP_FIXED ) != (void *)-1)
747 {
748 BYTE *p = view->prot + (start >> page_shift);
749 size >>= page_shift;
750 while (size--) *p++ &= ~VPROT_COMMITTED;
751 return STATUS_SUCCESS;
752 }
753 return FILE_GetNtStatus();
754 }
755
756
757 /***********************************************************************
758 * do_relocations
759 *
760 * Apply the relocations to a mapped PE image
761 */
762 static int do_relocations( char *base, const IMAGE_DATA_DIRECTORY *dir,
763 int delta, SIZE_T total_size )
764 {
765 IMAGE_BASE_RELOCATION *rel;
766
767 TRACE_(module)( "relocating from %p-%p to %p-%p\n",
768 base - delta, base - delta + total_size, base, base + total_size );
769
770 for (rel = (IMAGE_BASE_RELOCATION *)(base + dir->VirtualAddress);
771 ((char *)rel < base + dir->VirtualAddress + dir->Size) && rel->SizeOfBlock;
772 rel = (IMAGE_BASE_RELOCATION*)((char*)rel + rel->SizeOfBlock) )
773 {
774 char *page = base + rel->VirtualAddress;
775 WORD *TypeOffset = (WORD *)(rel + 1);
776 int i, count = (rel->SizeOfBlock - sizeof(*rel)) / sizeof(*TypeOffset);
777
778 if (!count) continue;
779
780 /* sanity checks */
781 if ((char *)rel + rel->SizeOfBlock > base + dir->VirtualAddress + dir->Size)
782 {
783 ERR_(module)("invalid relocation %p,%lx,%ld at %p,%lx,%lx\n",
784 rel, rel->VirtualAddress, rel->SizeOfBlock,
785 base, dir->VirtualAddress, dir->Size );
786 return 0;
787 }
788
789 if (page > base + total_size)
790 {
791 WARN_(module)("skipping %d relocations for page %p beyond module %p-%p\n",
792 count, page, base, base + total_size );
793 continue;
794 }
795
796 TRACE_(module)("%d relocations for page %lx\n", count, rel->VirtualAddress);
797
798 /* patching in reverse order */
799 for (i = 0 ; i < count; i++)
800 {
801 int offset = TypeOffset[i] & 0xFFF;
802 int type = TypeOffset[i] >> 12;
803 switch(type)
804 {
805 case IMAGE_REL_BASED_ABSOLUTE:
806 break;
807 case IMAGE_REL_BASED_HIGH:
808 *(short*)(page+offset) += HIWORD(delta);
809 break;
810 case IMAGE_REL_BASED_LOW:
811 *(short*)(page+offset) += LOWORD(delta);
812 break;
813 case IMAGE_REL_BASED_HIGHLOW:
814 *(int*)(page+offset) += delta;
815 /* FIXME: if this is an exported address, fire up enhanced logic */
816 break;
817 default:
818 FIXME_(module)("Unknown/unsupported fixup type %d.\n", type);
819 break;
820 }
821 }
822 }
823 return 1;
824 }
825
826
827 /***********************************************************************
828 * map_image
829 *
830 * Map an executable (PE format) image into memory.
831 */
832 static NTSTATUS map_image( HANDLE hmapping, int fd, char *base, SIZE_T total_size,
833 SIZE_T header_size, int shared_fd, BOOL removable, PVOID *addr_ptr )
834 {
835 IMAGE_DOS_HEADER *dos;
836 IMAGE_NT_HEADERS *nt;
837 IMAGE_SECTION_HEADER *sec;
838 IMAGE_DATA_DIRECTORY *imports;
839 NTSTATUS status = STATUS_CONFLICTING_ADDRESSES;
840 int i;
841 off_t pos;
842 struct stat st;
843 struct file_view *view = NULL;
844 char *ptr, *header_end;
845
846 /* zero-map the whole range */
847
848 RtlEnterCriticalSection( &csVirtual );
849
850 if (base >= (char *)0x110000) /* make sure the DOS area remains free */
851 status = map_view( &view, base, total_size,
852 VPROT_COMMITTED | VPROT_READ | VPROT_EXEC | VPROT_WRITECOPY | VPROT_IMAGE );
853
854 if (status == STATUS_CONFLICTING_ADDRESSES)
855 status = map_view( &view, NULL, total_size,
856 VPROT_COMMITTED | VPROT_READ | VPROT_EXEC | VPROT_WRITECOPY | VPROT_IMAGE );
857
858 if (status != STATUS_SUCCESS) goto error;
859
860 ptr = view->base;
861 TRACE_(module)( "mapped PE file at %p-%p\n", ptr, ptr + total_size );
862
863 /* map the header */
864
865 if (fstat( fd, &st ) == -1)
866 {
867 status = FILE_GetNtStatus();
868 goto error;
869 }
870 status = STATUS_INVALID_IMAGE_FORMAT; /* generic error */
871 if (!st.st_size) goto error;
872 header_size = min( header_size, st.st_size );
873 if (map_file_into_view( view, fd, 0, header_size, 0, VPROT_COMMITTED | VPROT_READ,
874 removable ) != STATUS_SUCCESS) goto error;
875 dos = (IMAGE_DOS_HEADER *)ptr;
876 nt = (IMAGE_NT_HEADERS *)(ptr + dos->e_lfanew);
877 header_end = ptr + ROUND_SIZE( 0, header_size );
878 if ((char *)(nt + 1) > header_end) goto error;
879 sec = (IMAGE_SECTION_HEADER*)((char*)&nt->OptionalHeader+nt->FileHeader.SizeOfOptionalHeader);
880 if ((char *)(sec + nt->FileHeader.NumberOfSections) > header_end) goto error;
881
882 imports = nt->OptionalHeader.DataDirectory + IMAGE_DIRECTORY_ENTRY_IMPORT;
883 if (!imports->Size || !imports->VirtualAddress) imports = NULL;
884
885 /* check the architecture */
886
887 if (nt->FileHeader.Machine != IMAGE_FILE_MACHINE_I386)
888 {
889 MESSAGE("Trying to load PE image for unsupported architecture (");
890 switch (nt->FileHeader.Machine)
891 {
892 case IMAGE_FILE_MACHINE_UNKNOWN: MESSAGE("Unknown"); break;
893 case IMAGE_FILE_MACHINE_I860: MESSAGE("I860"); break;
894 case IMAGE_FILE_MACHINE_R3000: MESSAGE("R3000"); break;
895 case IMAGE_FILE_MACHINE_R4000: MESSAGE("R4000"); break;
896 case IMAGE_FILE_MACHINE_R10000: MESSAGE("R10000"); break;
897 case IMAGE_FILE_MACHINE_ALPHA: MESSAGE("Alpha"); break;
898 case IMAGE_FILE_MACHINE_POWERPC: MESSAGE("PowerPC"); break;
899 case IMAGE_FILE_MACHINE_IA64: MESSAGE("IA-64"); break;
900 case IMAGE_FILE_MACHINE_ALPHA64: MESSAGE("Alpha-64"); break;
901 case IMAGE_FILE_MACHINE_AMD64: MESSAGE("AMD-64"); break;
902 case IMAGE_FILE_MACHINE_ARM: MESSAGE("ARM"); break;
903 default: MESSAGE("Unknown-%04x", nt->FileHeader.Machine); break;
904 }
905 MESSAGE(")\n");
906 goto error;
907 }
908
909 /* check for non page-aligned binary */
910
911 if (nt->OptionalHeader.SectionAlignment <= page_mask)
912 {
913 /* unaligned sections, this happens for native subsystem binaries */
914 /* in that case Windows simply maps in the whole file */
915
916 if (map_file_into_view( view, fd, 0, total_size, 0, VPROT_COMMITTED | VPROT_READ,
917 removable ) != STATUS_SUCCESS) goto error;
918
919 /* check that all sections are loaded at the right offset */
920 for (i = 0; i < nt->FileHeader.NumberOfSections; i++)
921 {
922 if (sec[i].VirtualAddress != sec[i].PointerToRawData)
923 goto error; /* Windows refuses to load in that case too */
924 }
925
926 /* set the image protections */
927 VIRTUAL_SetProt( view, ptr, total_size,
928 VPROT_COMMITTED | VPROT_READ | VPROT_WRITECOPY | VPROT_EXEC );
929
930 /* perform relocations if necessary */
931 /* FIXME: not 100% compatible, Windows doesn't do this for non page-aligned binaries */
932 if (ptr != base)
933 {
934 const IMAGE_DATA_DIRECTORY *relocs;
935 relocs = &nt->OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_BASERELOC];
936 if (relocs->VirtualAddress && relocs->Size)
937 do_relocations( ptr, relocs, ptr - base, total_size );
938 }
939
940 goto done;
941 }
942
943
944 /* map all the sections */
945
946 for (i = pos = 0; i < nt->FileHeader.NumberOfSections; i++, sec++)
947 {
948 SIZE_T map_size, file_size, end;
949
950 if (!sec->Misc.VirtualSize)
951 {
952 file_size = sec->SizeOfRawData;
953 map_size = ROUND_SIZE( 0, file_size );
954 }
955 else
956 {
957 map_size = ROUND_SIZE( 0, sec->Misc.VirtualSize );
958 file_size = min( sec->SizeOfRawData, map_size );
959 }
960
961 /* a few sanity checks */
962 end = sec->VirtualAddress + ROUND_SIZE( sec->VirtualAddress, map_size );
963 if (sec->VirtualAddress > total_size || end > total_size || end < sec->VirtualAddress)
964 {
965 ERR_(module)( "Section %.8s too large (%lx+%lx/%lx)\n",
966 sec->Name, sec->VirtualAddress, map_size, total_size );
967 goto error;
968 }
969
970 if ((sec->Characteristics & IMAGE_SCN_MEM_SHARED) &&
971 (sec->Characteristics & IMAGE_SCN_MEM_WRITE))
972 {
973 TRACE_(module)( "mapping shared section %.8s at %p off %lx (%x) size %lx (%lx) flags %lx\n",
974 sec->Name, ptr + sec->VirtualAddress,
975 sec->PointerToRawData, (int)pos, file_size, map_size,
976 sec->Characteristics );
977 if (map_file_into_view( view, shared_fd, sec->VirtualAddress, map_size, pos,
978 VPROT_COMMITTED | VPROT_READ | PROT_WRITE,
979 FALSE ) != STATUS_SUCCESS)
980 {
981 ERR_(module)( "Could not map shared section %.8s\n", sec->Name );
982 goto error;
983 }
984
985 /* check if the import directory falls inside this section */
986 if (imports && imports->VirtualAddress >= sec->VirtualAddress &&
987 imports->VirtualAddress < sec->VirtualAddress + map_size)
988 {
989 UINT_PTR base = imports->VirtualAddress & ~page_mask;
990 UINT_PTR end = base + ROUND_SIZE( imports->VirtualAddress, imports->Size );
991 if (end > sec->VirtualAddress + map_size) end = sec->VirtualAddress + map_size;
992 if (end > base)
993 map_file_into_view( view, shared_fd, base, end - base,
994 pos + (base - sec->VirtualAddress),
995 VPROT_COMMITTED | VPROT_READ | VPROT_WRITECOPY,
996 FALSE );
997 }
998 pos += map_size;
999 continue;
1000 }
1001
1002 TRACE_(module)( "mapping section %.8s at %p off %lx size %lx virt %lx flags %lx\n",
1003 sec->Name, ptr + sec->VirtualAddress,
1004 sec->PointerToRawData, sec->SizeOfRawData,
1005 sec->Misc.VirtualSize, sec->Characteristics );
1006
1007 if (!sec->PointerToRawData || !file_size) continue;
1008
1009 /* Note: if the section is not aligned properly map_file_into_view will magically
1010 * fall back to read(), so we don't need to check anything here.
1011 */
1012 end = sec->PointerToRawData + file_size;
1013 if (sec->PointerToRawData >= st.st_size || end > st.st_size || end < sec->PointerToRawData ||
1014 map_file_into_view( view, fd, sec->VirtualAddress, file_size, sec->PointerToRawData,
1015 VPROT_COMMITTED | VPROT_READ | VPROT_WRITECOPY,
1016 removable ) != STATUS_SUCCESS)
1017 {
1018 ERR_(module)( "Could not map section %.8s, file probably truncated\n", sec->Name );
1019 goto error;
1020 }
1021
1022 if (file_size & page_mask)
1023 {
1024 end = ROUND_SIZE( 0, file_size );
1025 if (end > map_size) end = map_size;
1026 TRACE_(module)("clearing %p - %p\n",
1027 ptr + sec->VirtualAddress + file_size,
1028 ptr + sec->VirtualAddress + end );
1029 memset( ptr + sec->VirtualAddress + file_size, 0, end - file_size );
1030 }
1031 }
1032
1033
1034 /* perform base relocation, if necessary */
1035
1036 if (ptr != base)
1037 {
1038 const IMAGE_DATA_DIRECTORY *relocs;
1039
1040 relocs = &nt->OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_BASERELOC];
1041 if (nt->FileHeader.Characteristics & IMAGE_FILE_RELOCS_STRIPPED)
1042 {
1043 if (nt->OptionalHeader.ImageBase == 0x400000) {
1044 ERR("Image was mapped at %p: standard load address for a Win32 program (0x00400000) not available\n", ptr);
1045 ERR("Do you have exec-shield or prelink active?\n");
1046 } else
1047 ERR( "FATAL: Need to relocate module from addr %lx, but there are no relocation records\n",
1048 nt->OptionalHeader.ImageBase );
1049 goto error;
1050 }
1051
1052 /* FIXME: If we need to relocate a system DLL (base > 2GB) we should
1053 * really make sure that the *new* base address is also > 2GB.
1054 * Some DLLs really check the MSB of the module handle :-/
1055 */
1056 if ((nt->OptionalHeader.ImageBase & 0x80000000) && !((ULONG_PTR)base & 0x80000000))
1057 ERR( "Forced to relocate system DLL (base > 2GB). This is not good.\n" );
1058
1059 if (!do_relocations( ptr, relocs, ptr - base, total_size ))
1060 {
1061 goto error;
1062 }
1063 }
1064
1065 /* set the image protections */
1066
1067 sec = (IMAGE_SECTION_HEADER*)((char *)&nt->OptionalHeader+nt->FileHeader.SizeOfOptionalHeader);
1068 for (i = 0; i < nt->FileHeader.NumberOfSections; i++, sec++)
1069 {
1070 SIZE_T size = ROUND_SIZE( sec->VirtualAddress, sec->Misc.VirtualSize );
1071 BYTE vprot = VPROT_COMMITTED;
1072 if (sec->Characteristics & IMAGE_SCN_MEM_READ) vprot |= VPROT_READ;
1073 if (sec->Characteristics & IMAGE_SCN_MEM_WRITE) vprot |= VPROT_READ|VPROT_WRITECOPY;
1074 if (sec->Characteristics & IMAGE_SCN_MEM_EXECUTE) vprot |= VPROT_EXEC;
1075
1076 /* Dumb game crack lets the AOEP point into a data section. Adjust. */
1077 if ((nt->OptionalHeader.AddressOfEntryPoint >= sec->VirtualAddress) &&
1078 (nt->OptionalHeader.AddressOfEntryPoint < sec->VirtualAddress + size))
1079 vprot |= VPROT_EXEC;
1080
1081 VIRTUAL_SetProt( view, ptr + sec->VirtualAddress, size, vprot );
1082 }
1083
1084 done:
1085 if (!removable) /* don't keep handle open on removable media */
1086 NtDuplicateObject( NtCurrentProcess(), hmapping,
1087 NtCurrentProcess(), &view->mapping,
1088 0, 0, DUPLICATE_SAME_ACCESS );
1089
1090 RtlLeaveCriticalSection( &csVirtual );
1091
1092 *addr_ptr = ptr;
1093 return STATUS_SUCCESS;
1094
1095 error:
1096 if (view) delete_view( view );
1097 RtlLeaveCriticalSection( &csVirtual );
1098 return status;
1099 }
1100
1101
1102 /***********************************************************************
1103 * is_current_process
1104 *
1105 * Check whether a process handle is for the current process.
1106 */
1107 BOOL is_current_process( HANDLE handle )
1108 {
1109 BOOL ret = FALSE;
1110
1111 if (handle == NtCurrentProcess()) return TRUE;
1112 SERVER_START_REQ( get_process_info )
1113 {
1114 req->handle = handle;
1115 if (!wine_server_call( req ))
1116 ret = ((DWORD)reply->pid == GetCurrentProcessId());
1117 }
1118 SERVER_END_REQ;
1119 return ret;
1120 }
1121
1122
1123 /***********************************************************************
1124 * virtual_init
1125 */
1126 static inline void virtual_init(void)
1127 {
1128 #ifndef page_mask
1129 page_size = getpagesize();
1130 page_mask = page_size - 1;
1131 /* Make sure we have a power of 2 */
1132 assert( !(page_size & page_mask) );
1133 page_shift = 0;
1134 while ((1 << page_shift) != page_size) page_shift++;
1135 #endif /* page_mask */
1136 }
1137
1138
1139 /***********************************************************************
1140 * VIRTUAL_alloc_teb
1141 *
1142 * Allocate a memory view for a new TEB, properly aligned to a multiple of the size.
1143 */
1144 NTSTATUS VIRTUAL_alloc_teb( void **ret, size_t size, BOOL first )
1145 {
1146 void *ptr;
1147 NTSTATUS status;
1148 struct file_view *view;
1149 size_t align_size;
1150 BYTE vprot = VPROT_READ | VPROT_WRITE | VPROT_COMMITTED;
1151
1152 if (first) virtual_init();
1153
1154 *ret = NULL;
1155 size = ROUND_SIZE( 0, size );
1156 align_size = page_size;
1157 while (align_size < size) align_size *= 2;
1158
1159 for (;;)
1160 {
1161 if ((ptr = wine_anon_mmap( NULL, 2 * align_size, VIRTUAL_GetUnixProt(vprot), 0 )) == (void *)-1)
1162 {
1163 if (errno == ENOMEM) return STATUS_NO_MEMORY;
1164 return STATUS_INVALID_PARAMETER;
1165 }
1166 if (!is_beyond_limit( ptr, 2 * align_size, user_space_limit ))
1167 {
1168 ptr = unmap_extra_space( ptr, 2 * align_size, align_size, align_size - 1 );
1169 break;
1170 }
1171 /* if we got something beyond the user limit, unmap it and retry */
1172 add_reserved_area( ptr, 2 * align_size );
1173 }
1174
1175 if (!first) RtlEnterCriticalSection( &csVirtual );
1176
1177 status = create_view( &view, ptr, size, vprot );
1178 if (status == STATUS_SUCCESS)
1179 {
1180 view->flags |= VFLAG_VALLOC;
1181 *ret = ptr;
1182 }
1183 else unmap_area( ptr, size );
1184
1185 if (!first) RtlLeaveCriticalSection( &csVirtual );
1186
1187 return status;
1188 }
1189
1190
1191 /***********************************************************************
1192 * VIRTUAL_HandleFault
1193 */
1194 NTSTATUS VIRTUAL_HandleFault( LPCVOID addr )
1195 {
1196 FILE_VIEW *view;
1197 NTSTATUS ret = STATUS_ACCESS_VIOLATION;
1198
1199 RtlEnterCriticalSection( &csVirtual );
1200 if ((view = VIRTUAL_FindView( addr )))
1201 {
1202 void *page = ROUND_ADDR( addr, page_mask );
1203 BYTE vprot = view->prot[((const char *)page - (const char *)view->base) >> page_shift];
1204 if (vprot & VPROT_GUARD)
1205 {
1206 VIRTUAL_SetProt( view, page, page_mask + 1, vprot & ~VPROT_GUARD );
1207 ret = STATUS_GUARD_PAGE_VIOLATION;
1208 }
1209 }
1210 RtlLeaveCriticalSection( &csVirtual );
1211 return ret;
1212 }
1213
1214 /***********************************************************************
1215 * VIRTUAL_HasMapping
1216 *
1217 * Check if the specified view has an associated file mapping.
1218 */
1219 BOOL VIRTUAL_HasMapping( LPCVOID addr )
1220 {
1221 FILE_VIEW *view;
1222 BOOL ret = FALSE;
1223
1224 RtlEnterCriticalSection( &csVirtual );
1225 if ((view = VIRTUAL_FindView( addr ))) ret = (view->mapping != 0);
1226 RtlLeaveCriticalSection( &csVirtual );
1227 return ret;
1228 }
1229
1230
1231 /***********************************************************************
1232 * VIRTUAL_UseLargeAddressSpace
1233 *
1234 * Increase the address space size for apps that support it.
1235 */
1236 void VIRTUAL_UseLargeAddressSpace(void)
1237 {
1238 if (user_space_limit >= ADDRESS_SPACE_LIMIT) return;
1239 /* no large address space on win9x */
1240 if (NtCurrentTeb()->Peb->OSPlatformId != VER_PLATFORM_WIN32_NT) return;
1241
1242 RtlEnterCriticalSection( &csVirtual );
1243 remove_reserved_area( user_space_limit, (char *)ADDRESS_SPACE_LIMIT - (char *)user_space_limit );
1244 user_space_limit = ADDRESS_SPACE_LIMIT;
1245 RtlLeaveCriticalSection( &csVirtual );
1246 }
1247
1248
1249 /***********************************************************************
1250 * NtAllocateVirtualMemory (NTDLL.@)
1251 * ZwAllocateVirtualMemory (NTDLL.@)
1252 */
1253 NTSTATUS WINAPI NtAllocateVirtualMemory( HANDLE process, PVOID *ret, ULONG zero_bits,
1254 SIZE_T *size_ptr, ULONG type, ULONG protect )
1255 {
1256 void *base;
1257 BYTE vprot;
1258 SIZE_T size = *size_ptr;
1259 NTSTATUS status = STATUS_SUCCESS;
1260 struct file_view *view;
1261
1262 TRACE("%p %p %08lx %lx %08lx\n", process, *ret, size, type, protect );
1263
1264 if (!size) return STATUS_INVALID_PARAMETER;
1265
1266 if (!is_current_process( process ))
1267 {
1268 ERR("Unsupported on other process\n");
1269 return STATUS_ACCESS_DENIED;
1270 }
1271
1272 /* Round parameters to a page boundary */
1273
1274 if (size > 0x7fc00000) return STATUS_WORKING_SET_LIMIT_RANGE; /* 2Gb - 4Mb */
1275
1276 if (*ret)
1277 {
1278 if (type & MEM_RESERVE) /* Round down to 64k boundary */
1279 base = ROUND_ADDR( *ret, granularity_mask );
1280 else
1281 base = ROUND_ADDR( *ret, page_mask );
1282 size = (((UINT_PTR)*ret + size + page_mask) & ~page_mask) - (UINT_PTR)base;
1283
1284 /* disallow low 64k, wrap-around and kernel space */
1285 if (((char *)base <= (char *)granularity_mask) ||
1286 ((char *)base + size < (char *)base) ||
1287 is_beyond_limit( base, size, ADDRESS_SPACE_LIMIT ))
1288 return STATUS_INVALID_PARAMETER;
1289 }
1290 else
1291 {
1292 base = NULL;
1293 size = (size + page_mask) & ~page_mask;
1294 }
1295
1296 if (type & MEM_TOP_DOWN) {
1297 /* FIXME: MEM_TOP_DOWN allocates the largest possible address. */
1298 WARN("MEM_TOP_DOWN ignored\n");
1299 type &= ~MEM_TOP_DOWN;
1300 }
1301
1302 if (zero_bits)
1303 WARN("zero_bits %lu ignored\n", zero_bits);
1304
1305 /* Compute the alloc type flags */
1306
1307 if (!(type & MEM_SYSTEM))
1308 {
1309 if (!(type & (MEM_COMMIT | MEM_RESERVE)) || (type & ~(MEM_COMMIT | MEM_RESERVE)))
1310 {
1311 WARN("called with wrong alloc type flags (%08lx) !\n", type);
1312 return STATUS_INVALID_PARAMETER;
1313 }
1314 }
1315 vprot = VIRTUAL_GetProt( protect );
1316 if (type & MEM_COMMIT) vprot |= VPROT_COMMITTED;
1317
1318 /* Reserve the memory */
1319
1320 RtlEnterCriticalSection( &csVirtual );
1321
1322 if (type & MEM_SYSTEM)
1323 {
1324 if (type & MEM_IMAGE) vprot |= VPROT_IMAGE;
1325 status = create_view( &view, base, size, vprot | VPROT_COMMITTED );
1326 if (status == STATUS_SUCCESS)
1327 {
1328 view->flags |= VFLAG_VALLOC | VFLAG_SYSTEM;
1329 base = view->base;
1330 }
1331 }
1332 else if ((type & MEM_RESERVE) || !base)
1333 {
1334 status = map_view( &view, base, size, vprot );
1335 if (status == STATUS_SUCCESS)
1336 {
1337 view->flags |= VFLAG_VALLOC;
1338 base = view->base;
1339 }
1340 }
1341 else /* commit the pages */
1342 {
1343 if (!(view = VIRTUAL_FindView( base )) ||
1344 ((char *)base + size > (char *)view->base + view->size)) status = STATUS_NOT_MAPPED_VIEW;
1345 else if (!VIRTUAL_SetProt( view, base, size, vprot )) status = STATUS_ACCESS_DENIED;
1346 }
1347
1348 RtlLeaveCriticalSection( &csVirtual );
1349
1350 if (status == STATUS_SUCCESS)
1351 {
1352 *ret = base;
1353 *size_ptr = size;
1354 }
1355 return status;
1356 }
1357
1358
1359 /***********************************************************************
1360 * NtFreeVirtualMemory (NTDLL.@)
1361 * ZwFreeVirtualMemory (NTDLL.@)
1362 */
1363 NTSTATUS WINAPI NtFreeVirtualMemory( HANDLE process, PVOID *addr_ptr, SIZE_T *size_ptr, ULONG type )
1364 {
1365 FILE_VIEW *view;
1366 char *base;
1367 NTSTATUS status = STATUS_SUCCESS;
1368 LPVOID addr = *addr_ptr;
1369 SIZE_T size = *size_ptr;
1370
1371 TRACE("%p %p %08lx %lx\n", process, addr, size, type );
1372
1373 if (!is_current_process( process ))
1374 {
1375 ERR("Unsupported on other process\n");
1376 return STATUS_ACCESS_DENIED;
1377 }
1378
1379 /* Fix the parameters */
1380
1381 size = ROUND_SIZE( addr, size );
1382 base = ROUND_ADDR( addr, page_mask );
1383
1384 RtlEnterCriticalSection(&csVirtual);
1385
1386 if (!(view = VIRTUAL_FindView( base )) ||
1387 (base + size > (char *)view->base + view->size) ||
1388 !(view->flags & VFLAG_VALLOC))
1389 {
1390 status = STATUS_INVALID_PARAMETER;
1391 }
1392 else if (type & MEM_SYSTEM)
1393 {
1394 /* return the values that the caller should use to unmap the area */
1395 *addr_ptr = view->base;
1396 *size_ptr = view->size;
1397 view->flags |= VFLAG_SYSTEM;
1398 delete_view( view );
1399 }
1400 else if (type == MEM_RELEASE)
1401 {
1402 /* Free the pages */
1403
1404 if (size || (base != view->base)) status = STATUS_INVALID_PARAMETER;
1405 else
1406 {
1407 delete_view( view );
1408 *addr_ptr = base;
1409 *size_ptr = size;
1410 }
1411 }
1412 else if (type == MEM_DECOMMIT)
1413 {
1414 status = decommit_pages( view, base - (char *)view->base, size );
1415 if (status == STATUS_SUCCESS)
1416 {
1417 *addr_ptr = base;
1418 *size_ptr = size;
1419 }
1420 }
1421 else
1422 {
1423 WARN("called with wrong free type flags (%08lx) !\n", type);
1424 status = STATUS_INVALID_PARAMETER;
1425 }
1426
1427 RtlLeaveCriticalSection(&csVirtual);
1428 return status;
1429 }
1430
1431
1432 /***********************************************************************
1433 * NtProtectVirtualMemory (NTDLL.@)
1434 * ZwProtectVirtualMemory (NTDLL.@)
1435 */
1436 NTSTATUS WINAPI NtProtectVirtualMemory( HANDLE process, PVOID *addr_ptr, SIZE_T *size_ptr,
1437 ULONG new_prot, ULONG *old_prot )
1438 {
1439 FILE_VIEW *view;
1440 NTSTATUS status = STATUS_SUCCESS;
1441 char *base;
1442 UINT i;
1443 BYTE vprot, *p;
1444 ULONG prot;
1445 SIZE_T size = *size_ptr;
1446 LPVOID addr = *addr_ptr;
1447
1448 TRACE("%p %p %08lx %08lx\n", process, addr, size, new_prot );
1449
1450 if (!is_current_process( process ))
1451 {
1452 ERR("Unsupported on other process\n");
1453 return STATUS_ACCESS_DENIED;
1454 }
1455
1456 /* Fix the parameters */
1457
1458 size = ROUND_SIZE( addr, size );
1459 base = ROUND_ADDR( addr, page_mask );
1460
1461 RtlEnterCriticalSection( &csVirtual );
1462
1463 if (!(view = VIRTUAL_FindView( base )) || (base + size > (char *)view->base + view->size))
1464 {
1465 status = STATUS_INVALID_PARAMETER;
1466 }
1467 else
1468 {
1469 /* Make sure all the pages are committed */
1470
1471 p = view->prot + ((base - (char *)view->base) >> page_shift);
1472 prot = VIRTUAL_GetWin32Prot( *p );
1473 for (i = size >> page_shift; i; i--, p++)
1474 {
1475 if (!(*p & VPROT_COMMITTED))
1476 {
1477 status = STATUS_NOT_COMMITTED;
1478 break;
1479 }
1480 }
1481 if (!i)
1482 {
1483 if (old_prot) *old_prot = prot;
1484 vprot = VIRTUAL_GetProt( new_prot ) | VPROT_COMMITTED;
1485 if (!VIRTUAL_SetProt( view, base, size, vprot )) status = STATUS_ACCESS_DENIED;
1486 }
1487 }
1488 RtlLeaveCriticalSection( &csVirtual );
1489
1490 if (status == STATUS_SUCCESS)
1491 {
1492 *addr_ptr = base;
1493 *size_ptr = size;
1494 }
1495 return status;
1496 }
1497
1498 #define UNIMPLEMENTED_INFO_CLASS(c) \
1499 case c: \
1500 FIXME("(process=%p,addr=%p) Unimplemented information class: " #c "\n", process, addr); \
1501 return STATUS_INVALID_INFO_CLASS
1502
1503 /***********************************************************************
1504 * NtQueryVirtualMemory (NTDLL.@)
1505 * ZwQueryVirtualMemory (NTDLL.@)
1506 */
1507 NTSTATUS WINAPI NtQueryVirtualMemory( HANDLE process, LPCVOID addr,
1508 MEMORY_INFORMATION_CLASS info_class, PVOID buffer,
1509 SIZE_T len, SIZE_T *res_len )
1510 {
1511 FILE_VIEW *view;
1512 char *base, *alloc_base = 0;
1513 struct list *ptr;
1514 SIZE_T size = 0;
1515 MEMORY_BASIC_INFORMATION *info = buffer;
1516
1517 if (info_class != MemoryBasicInformation)
1518 {
1519 switch(info_class)
1520 {
1521 UNIMPLEMENTED_INFO_CLASS(MemoryWorkingSetList);
1522 UNIMPLEMENTED_INFO_CLASS(MemorySectionName);
1523 UNIMPLEMENTED_INFO_CLASS(MemoryBasicVlmInformation);
1524
1525 default:
1526 FIXME("(%p,%p,info_class=%d,%p,%ld,%p) Unknown information class\n",
1527 process, addr, info_class, buffer, len, res_len);
1528 return STATUS_INVALID_INFO_CLASS;
1529 }
1530 }
1531 if (ADDRESS_SPACE_LIMIT && addr >= ADDRESS_SPACE_LIMIT)
1532 return STATUS_WORKING_SET_LIMIT_RANGE;
1533
1534 if (!is_current_process( process ))
1535 {
1536 ERR("Unsupported on other process\n");
1537 return STATUS_ACCESS_DENIED;
1538 }
1539
1540 base = ROUND_ADDR( addr, page_mask );
1541
1542 /* Find the view containing the address */
1543
1544 RtlEnterCriticalSection(&csVirtual);
1545 ptr = list_head( &views_list );
1546 for (;;)
1547 {
1548 if (!ptr)
1549 {
1550 /* make the address space end at the user limit, except if
1551 * the last view was mapped beyond that */
1552 if (alloc_base <= (char *)user_space_limit)
1553 {
1554 if (user_space_limit && base >= (char *)user_space_limit)
1555 {
1556 RtlLeaveCriticalSection( &csVirtual );
1557 return STATUS_WORKING_SET_LIMIT_RANGE;
1558 }
1559 size = (char *)user_space_limit - alloc_base;
1560 }
1561 else size = (char *)ADDRESS_SPACE_LIMIT - alloc_base;
1562 view = NULL;
1563 break;
1564 }
1565 view = LIST_ENTRY( ptr, struct file_view, entry );
1566 if ((char *)view->base > base)
1567 {
1568 size = (char *)view->base - alloc_base;
1569 view = NULL;
1570 break;
1571 }
1572 if ((char *)view->base + view->size > base)
1573 {
1574 alloc_base = view->base;
1575 size = view->size;
1576 break;
1577 }
1578 alloc_base = (char *)view->base + view->size;
1579 ptr = list_next( &views_list, ptr );
1580 }
1581
1582 /* Fill the info structure */
1583
1584 if (!view)
1585 {
1586 info->State = MEM_FREE;
1587 info->Protect = 0;
1588 info->AllocationProtect = 0;
1589 info->Type = 0;
1590 }
1591 else
1592 {
1593 BYTE vprot = view->prot[(base - alloc_base) >> page_shift];
1594 info->State = (vprot & VPROT_COMMITTED) ? MEM_COMMIT : MEM_RESERVE;
1595 info->Protect = VIRTUAL_GetWin32Prot( vprot );
1596 info->AllocationProtect = VIRTUAL_GetWin32Prot( view->protect );
1597 if (view->protect & VPROT_IMAGE) info->Type = MEM_IMAGE;
1598 else if (view->flags & VFLAG_VALLOC) info->Type = MEM_PRIVATE;
1599 else info->Type = MEM_MAPPED;
1600 for (size = base - alloc_base; size < view->size; size += page_mask+1)
1601 if (view->prot[size >> page_shift] != vprot) break;
1602 }
1603 RtlLeaveCriticalSection(&csVirtual);
1604
1605 info->BaseAddress = (LPVOID)base;
1606 info->AllocationBase = (LPVOID)alloc_base;
1607 info->RegionSize = size - (base - alloc_base);
1608 if (res_len) *res_len = sizeof(*info);
1609 return STATUS_SUCCESS;
1610 }
1611
1612
1613 /***********************************************************************
1614 * NtLockVirtualMemory (NTDLL.@)
1615 * ZwLockVirtualMemory (NTDLL.@)
1616 */
1617 NTSTATUS WINAPI NtLockVirtualMemory( HANDLE process, PVOID *addr, SIZE_T *size, ULONG unknown )
1618 {
1619 if (!is_current_process( process ))
1620 {
1621 ERR("Unsupported on other process\n");
1622 return STATUS_ACCESS_DENIED;
1623 }
1624 return STATUS_SUCCESS;
1625 }
1626
1627
1628 /***********************************************************************
1629 * NtUnlockVirtualMemory (NTDLL.@)
1630 * ZwUnlockVirtualMemory (NTDLL.@)
1631 */
1632 NTSTATUS WINAPI NtUnlockVirtualMemory( HANDLE process, PVOID *addr, SIZE_T *size, ULONG unknown )
1633 {
1634 if (!is_current_process( process ))
1635 {
1636 ERR("Unsupported on other process\n");
1637 return STATUS_ACCESS_DENIED;
1638 }
1639 return STATUS_SUCCESS;
1640 }
1641
1642
1643 /***********************************************************************
1644 * NtCreateSection (NTDLL.@)
1645 * ZwCreateSection (NTDLL.@)
1646 */
1647 NTSTATUS WINAPI NtCreateSection( HANDLE *handle, ACCESS_MASK access, const OBJECT_ATTRIBUTES *attr,
1648 const LARGE_INTEGER *size, ULONG protect,
1649 ULONG sec_flags, HANDLE file )
1650 {
1651 NTSTATUS ret;
1652 BYTE vprot;
1653 DWORD len = (attr && attr->ObjectName) ? attr->ObjectName->Length : 0;
1654
1655 /* Check parameters */
1656
1657 if (len > MAX_PATH*sizeof(WCHAR)) return STATUS_NAME_TOO_LONG;
1658
1659 vprot = VIRTUAL_GetProt( protect );
1660 if (sec_flags & SEC_RESERVE)
1661 {
1662 if (file) return STATUS_INVALID_PARAMETER;
1663 }
1664 else vprot |= VPROT_COMMITTED;
1665 if (sec_flags & SEC_NOCACHE) vprot |= VPROT_NOCACHE;
1666 if (sec_flags & SEC_IMAGE) vprot |= VPROT_IMAGE;
1667
1668 /* Create the server object */
1669
1670 SERVER_START_REQ( create_mapping )
1671 {
1672 req->access = access;
1673 req->attributes = (attr) ? attr->Attributes : 0;
1674 req->rootdir = attr ? attr->RootDirectory : 0;
1675 req->file_handle = file;
1676 req->size_high = size ? size->u.HighPart : 0;
1677 req->size_low = size ? size->u.LowPart : 0;
1678 req->protect = vprot;
1679 if (len) wine_server_add_data( req, attr->ObjectName->Buffer, len );
1680 ret = wine_server_call( req );
1681 *handle = reply->handle;
1682 }
1683 SERVER_END_REQ;
1684 return ret;
1685 }
1686
1687
1688 /***********************************************************************
1689 * NtOpenSection (NTDLL.@)
1690 * ZwOpenSection (NTDLL.@)
1691 */
1692 NTSTATUS WINAPI NtOpenSection( HANDLE *handle, ACCESS_MASK access, const OBJECT_ATTRIBUTES *attr )
1693 {
1694 NTSTATUS ret;
1695 DWORD len = attr->ObjectName->Length;
1696
1697 if (len > MAX_PATH*sizeof(WCHAR)) return STATUS_NAME_TOO_LONG;
1698
1699 SERVER_START_REQ( open_mapping )
1700 {
1701 req->access = access;
1702 req->attributes = (attr) ? attr->Attributes : 0;
1703 req->rootdir = attr ? attr->RootDirectory : 0;
1704 wine_server_add_data( req, attr->ObjectName->Buffer, len );
1705 if (!(ret = wine_server_call( req ))) *handle = reply->handle;
1706 }
1707 SERVER_END_REQ;
1708 return ret;
1709 }
1710
1711
1712 /***********************************************************************
1713 * NtMapViewOfSection (NTDLL.@)
1714 * ZwMapViewOfSection (NTDLL.@)
1715 */
1716 NTSTATUS WINAPI NtMapViewOfSection( HANDLE handle, HANDLE process, PVOID *addr_ptr, ULONG zero_bits,
1717 SIZE_T commit_size, const LARGE_INTEGER *offset_ptr, SIZE_T *size_ptr,
1718 SECTION_INHERIT inherit, ULONG alloc_type, ULONG protect )
1719 {
1720 FILE_FS_DEVICE_INFORMATION device_info;
1721 NTSTATUS res;
1722 SIZE_T size = 0;
1723 int unix_handle = -1;
1724 int prot;
1725 void *base;
1726 struct file_view *view;
1727 DWORD size_low, size_high, header_size, shared_size;
1728 HANDLE shared_file;
1729 BOOL removable = FALSE;
1730 LARGE_INTEGER offset;
1731
1732 offset.QuadPart = offset_ptr ? offset_ptr->QuadPart : 0;
1733
1734 TRACE("handle=%p process=%p addr=%p off=%lx%08lx size=%lx access=%lx\n",
1735 handle, process, *addr_ptr, offset.u.HighPart, offset.u.LowPart, size, protect );
1736
1737 if (!is_current_process( process ))
1738 {
1739 ERR("Unsupported on other process\n");
1740 return STATUS_ACCESS_DENIED;
1741 }
1742
1743 /* Check parameters */
1744
1745 if ((offset.u.LowPart & granularity_mask) ||
1746 (*addr_ptr && ((UINT_PTR)*addr_ptr & granularity_mask)))
1747 return STATUS_INVALID_PARAMETER;
1748
1749 SERVER_START_REQ( get_mapping_info )
1750 {
1751 req->handle = handle;
1752 res = wine_server_call( req );
1753 prot = reply->protect;
1754 base = reply->base;
1755 size_low = reply->size_low;
1756 size_high = reply->size_high;
1757 header_size = reply->header_size;
1758 shared_file = reply->shared_file;
1759 shared_size = reply->shared_size;
1760 }
1761 SERVER_END_REQ;
1762 if (res) return res;
1763
1764 if ((res = wine_server_handle_to_fd( handle, 0, &unix_handle, NULL ))) return res;
1765
1766 if (FILE_GetDeviceInfo( unix_handle, &device_info ) == STATUS_SUCCESS)
1767 removable = device_info.Characteristics & FILE_REMOVABLE_MEDIA;
1768
1769 if (prot & VPROT_IMAGE)
1770 {
1771 if (shared_file)
1772 {
1773 int shared_fd;
1774
1775 if ((res = wine_server_handle_to_fd( shared_file, FILE_READ_DATA|FILE_WRITE_DATA,
1776 &shared_fd, NULL ))) goto done;
1777 res = map_image( handle, unix_handle, base, size_low, header_size,
1778 shared_fd, removable, addr_ptr );
1779 wine_server_release_fd( shared_file, shared_fd );
1780 NtClose( shared_file );
1781 }
1782 else
1783 {
1784 res = map_image( handle, unix_handle, base, size_low, header_size,
1785 -1, removable, addr_ptr );
1786 }
1787 wine_server_release_fd( handle, unix_handle );
1788 if (!res) *size_ptr = size_low;
1789 return res;
1790 }
1791
1792 if (size_high)
1793 ERR("Sizes larger than 4Gb not supported\n");
1794
1795 if ((offset.u.LowPart >= size_low) ||
1796 (*size_ptr > size_low - offset.u.LowPart))
1797 {
1798 res = STATUS_INVALID_PARAMETER;
1799 goto done;
1800 }
1801 if (*size_ptr) size = ROUND_SIZE( offset.u.LowPart, *size_ptr );
1802 else size = size_low - offset.u.LowPart;
1803
1804 switch(protect)
1805 {
1806 case PAGE_NOACCESS:
1807 break;
1808 case PAGE_READWRITE:
1809 case PAGE_EXECUTE_READWRITE:
1810 if (!(prot & VPROT_WRITE))
1811 {
1812 res = STATUS_INVALID_PARAMETER;
1813 goto done;
1814 }
1815 removable = FALSE;
1816 /* fall through */
1817 case PAGE_READONLY:
1818 case PAGE_WRITECOPY:
1819 case PAGE_EXECUTE:
1820 case PAGE_EXECUTE_READ:
1821 case PAGE_EXECUTE_WRITECOPY:
1822 if (prot & VPROT_READ) break;
1823 /* fall through */
1824 default:
1825 res = STATUS_INVALID_PARAMETER;
1826 goto done;
1827 }
1828
1829 /* FIXME: If a mapping is created with SEC_RESERVE and a process,
1830 * which has a view of this mapping commits some pages, they will
1831 * appear commited in all other processes, which have the same
1832 * view created. Since we don`t support this yet, we create the
1833 * whole mapping commited.
1834 */
1835 prot |= VPROT_COMMITTED;
1836
1837 /* Reserve a properly aligned area */
1838
1839 RtlEnterCriticalSection( &csVirtual );
1840
1841 res = map_view( &view, *addr_ptr, size, prot );
1842 if (res)
1843 {
1844 RtlLeaveCriticalSection( &csVirtual );
1845 goto done;
1846 }
1847
1848 /* Map the file */
1849
1850 TRACE("handle=%p size=%lx offset=%lx%08lx\n",
1851 handle, size, offset.u.HighPart, offset.u.LowPart );
1852
1853 res = map_file_into_view( view, unix_handle, 0, size, offset.QuadPart, prot, removable );
1854 if (res == STATUS_SUCCESS)
1855 {
1856 if (!removable) /* don't keep handle open on removable media */
1857 NtDuplicateObject( NtCurrentProcess(), handle,
1858 NtCurrentProcess(), &view->mapping,
1859 0, 0, DUPLICATE_SAME_ACCESS );
1860
1861 *addr_ptr = view->base;
1862 *size_ptr = size;
1863 }
1864 else
1865 {
1866 ERR( "map_file_into_view %p %lx %lx%08lx failed\n",
1867 view->base, size, offset.u.HighPart, offset.u.LowPart );
1868 delete_view( view );
1869 }
1870
1871 RtlLeaveCriticalSection( &csVirtual );
1872
1873 done:
1874 wine_server_release_fd( handle, unix_handle );
1875 return res;
1876 }
1877
1878
1879 /***********************************************************************
1880 * NtUnmapViewOfSection (NTDLL.@)
1881 * ZwUnmapViewOfSection (NTDLL.@)
1882 */
1883 NTSTATUS WINAPI NtUnmapViewOfSection( HANDLE process, PVOID addr )
1884 {
1885 FILE_VIEW *view;
1886 NTSTATUS status = STATUS_INVALID_PARAMETER;
1887 void *base = ROUND_ADDR( addr, page_mask );
1888
1889 if (!is_current_process( process ))
1890 {
1891 ERR("Unsupported on other process\n");
1892 return STATUS_ACCESS_DENIED;
1893 }
1894 RtlEnterCriticalSection( &csVirtual );
1895 if ((view = VIRTUAL_FindView( base )) && (base == view->base))
1896 {
1897 delete_view( view );
1898 status = STATUS_SUCCESS;
1899 }
1900 RtlLeaveCriticalSection( &csVirtual );
1901 return status;
1902 }
1903
1904
1905 /***********************************************************************
1906 * NtFlushVirtualMemory (NTDLL.@)
1907 * ZwFlushVirtualMemory (NTDLL.@)
1908 */
1909 NTSTATUS WINAPI NtFlushVirtualMemory( HANDLE process, LPCVOID *addr_ptr,
1910 SIZE_T *size_ptr, ULONG unknown )
1911 {
1912 FILE_VIEW *view;
1913 NTSTATUS status = STATUS_SUCCESS;
1914 void *addr = ROUND_ADDR( *addr_ptr, page_mask );
1915
1916 if (!is_current_process( process ))
1917 {
1918 ERR("Unsupported on other process\n");
1919 return STATUS_ACCESS_DENIED;
1920 }
1921 RtlEnterCriticalSection( &csVirtual );
1922 if (!(view = VIRTUAL_FindView( addr ))) status = STATUS_INVALID_PARAMETER;
1923 else
1924 {
1925 if (!*size_ptr) *size_ptr = view->size;
1926 *addr_ptr = addr;
1927 if (msync( addr, *size_ptr, MS_SYNC )) status = STATUS_NOT_MAPPED_DATA;
1928 }
1929 RtlLeaveCriticalSection( &csVirtual );
1930 return status;
1931 }
1932
1933
1934 /***********************************************************************
1935 * NtReadVirtualMemory (NTDLL.@)
1936 * ZwReadVirtualMemory (NTDLL.@)
1937 */
1938 NTSTATUS WINAPI NtReadVirtualMemory( HANDLE process, const void *addr, void *buffer,
1939 SIZE_T size, SIZE_T *bytes_read )
1940 {
1941 NTSTATUS status;
1942
1943 SERVER_START_REQ( read_process_memory )
1944 {
1945 req->handle = process;
1946 req->addr = (void *)addr;
1947 wine_server_set_reply( req, buffer, size );
1948 if ((status = wine_server_call( req ))) size = 0;
1949 }
1950 SERVER_END_REQ;
1951 if (bytes_read) *bytes_read = size;
1952 return status;
1953 }
1954
1955
1956 /***********************************************************************
1957 * NtWriteVirtualMemory (NTDLL.@)
1958 * ZwWriteVirtualMemory (NTDLL.@)
1959 */
1960 NTSTATUS WINAPI NtWriteVirtualMemory( HANDLE process, void *addr, const void *buffer,
1961 SIZE_T size, SIZE_T *bytes_written )
1962 {
1963 NTSTATUS status;
1964
1965 SERVER_START_REQ( write_process_memory )
1966 {
1967 req->handle = process;
1968 req->addr = addr;
1969 wine_server_add_data( req, buffer, size );
1970 if ((status = wine_server_call( req ))) size = 0;
1971 }
1972 SERVER_END_REQ;
1973 if (bytes_written) *bytes_written = size;
1974 return status;
1975 }
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