2 * Win32 virtual memory functions
4 * Copyright 1997, 2002 Alexandre Julliard
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.
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.
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
22 #include "wine/port.h"
34 #include <sys/types.h>
35 #ifdef HAVE_SYS_STAT_H
36 # include <sys/stat.h>
38 #ifdef HAVE_SYS_MMAN_H
39 # include <sys/mman.h>
41 #ifdef HAVE_VALGRIND_VALGRIND_H
42 # include <valgrind/valgrind.h>
45 #define NONAMELESSUNION
46 #define NONAMELESSSTRUCT
48 #define WIN32_NO_STATUS
51 #include "wine/library.h"
52 #include "wine/server.h"
53 #include "wine/exception.h"
54 #include "wine/list.h"
55 #include "wine/debug.h"
56 #include "ntdll_misc.h"
58 WINE_DEFAULT_DEBUG_CHANNEL(virtual);
59 WINE_DECLARE_DEBUG_CHANNEL(module);
66 #define MAP_NORESERVE 0
72 struct list entry; /* Entry in global view list */
73 void *base; /* Base address */
74 size_t size; /* Size in bytes */
75 HANDLE mapping; /* Handle to the file mapping */
76 unsigned int map_protect; /* Mapping protection */
77 unsigned int protect; /* Protection for all pages at allocation time */
78 BYTE prot[1]; /* Protection byte for each page */
82 /* Conversion from VPROT_* to Win32 flags */
83 static const BYTE VIRTUAL_Win32Flags[16] =
85 PAGE_NOACCESS, /* 0 */
86 PAGE_READONLY, /* READ */
87 PAGE_READWRITE, /* WRITE */
88 PAGE_READWRITE, /* READ | WRITE */
89 PAGE_EXECUTE, /* EXEC */
90 PAGE_EXECUTE_READ, /* READ | EXEC */
91 PAGE_EXECUTE_READWRITE, /* WRITE | EXEC */
92 PAGE_EXECUTE_READWRITE, /* READ | WRITE | EXEC */
93 PAGE_WRITECOPY, /* WRITECOPY */
94 PAGE_WRITECOPY, /* READ | WRITECOPY */
95 PAGE_WRITECOPY, /* WRITE | WRITECOPY */
96 PAGE_WRITECOPY, /* READ | WRITE | WRITECOPY */
97 PAGE_EXECUTE_WRITECOPY, /* EXEC | WRITECOPY */
98 PAGE_EXECUTE_WRITECOPY, /* READ | EXEC | WRITECOPY */
99 PAGE_EXECUTE_WRITECOPY, /* WRITE | EXEC | WRITECOPY */
100 PAGE_EXECUTE_WRITECOPY /* READ | WRITE | EXEC | WRITECOPY */
103 static struct list views_list = LIST_INIT(views_list);
105 static RTL_CRITICAL_SECTION csVirtual;
106 static RTL_CRITICAL_SECTION_DEBUG critsect_debug =
109 { &critsect_debug.ProcessLocksList, &critsect_debug.ProcessLocksList },
110 0, 0, { (DWORD_PTR)(__FILE__ ": csVirtual") }
112 static RTL_CRITICAL_SECTION csVirtual = { &critsect_debug, -1, 0, 0, 0, 0 };
115 static const UINT page_shift = 12;
116 static const UINT_PTR page_mask = 0xfff;
117 /* Note: these are Windows limits, you cannot change them. */
118 static void *address_space_limit = (void *)0xc0000000; /* top of the total available address space */
119 static void *user_space_limit = (void *)0x7fff0000; /* top of the user address space */
120 static void *working_set_limit = (void *)0x7fff0000; /* top of the current working set */
121 static void *address_space_start = (void *)0x110000; /* keep DOS area clear */
122 #elif defined(__x86_64__)
123 static const UINT page_shift = 12;
124 static const UINT_PTR page_mask = 0xfff;
125 static void *address_space_limit = (void *)0x7fffffff0000;
126 static void *user_space_limit = (void *)0x7fffffff0000;
127 static void *working_set_limit = (void *)0x7fffffff0000;
128 static void *address_space_start = (void *)0x10000;
130 UINT_PTR page_size = 0;
131 static UINT page_shift;
132 static UINT_PTR page_mask;
133 static void *address_space_limit;
134 static void *user_space_limit;
135 static void *working_set_limit;
136 static void *address_space_start = (void *)0x10000;
137 #endif /* __i386__ */
138 static const int is_win64 = (sizeof(void *) > sizeof(int));
140 #define ROUND_ADDR(addr,mask) \
141 ((void *)((UINT_PTR)(addr) & ~(UINT_PTR)(mask)))
143 #define ROUND_SIZE(addr,size) \
144 (((SIZE_T)(size) + ((UINT_PTR)(addr) & page_mask) + page_mask) & ~page_mask)
146 #define VIRTUAL_DEBUG_DUMP_VIEW(view) \
147 do { if (TRACE_ON(virtual)) VIRTUAL_DumpView(view); } while (0)
149 #define VIRTUAL_HEAP_SIZE (4*1024*1024)
151 static HANDLE virtual_heap;
152 static void *preload_reserve_start;
153 static void *preload_reserve_end;
154 static int use_locks;
155 static int force_exec_prot; /* whether to force PROT_EXEC on all PROT_READ mmaps */
158 /***********************************************************************
161 static const char *VIRTUAL_GetProtStr( BYTE prot )
163 static char buffer[6];
164 buffer[0] = (prot & VPROT_COMMITTED) ? 'c' : '-';
165 buffer[1] = (prot & VPROT_GUARD) ? 'g' : ((prot & VPROT_WRITEWATCH) ? 'H' : '-');
166 buffer[2] = (prot & VPROT_READ) ? 'r' : '-';
167 buffer[3] = (prot & VPROT_WRITECOPY) ? 'W' : ((prot & VPROT_WRITE) ? 'w' : '-');
168 buffer[4] = (prot & VPROT_EXEC) ? 'x' : '-';
174 /***********************************************************************
175 * VIRTUAL_GetUnixProt
177 * Convert page protections to protection for mmap/mprotect.
179 static int VIRTUAL_GetUnixProt( BYTE vprot )
182 if ((vprot & VPROT_COMMITTED) && !(vprot & VPROT_GUARD))
184 if (vprot & VPROT_READ) prot |= PROT_READ;
185 if (vprot & VPROT_WRITE) prot |= PROT_WRITE | PROT_READ;
186 if (vprot & VPROT_WRITECOPY) prot |= PROT_WRITE | PROT_READ;
187 if (vprot & VPROT_EXEC) prot |= PROT_EXEC | PROT_READ;
188 if (vprot & VPROT_WRITEWATCH) prot &= ~PROT_WRITE;
190 if (!prot) prot = PROT_NONE;
195 /***********************************************************************
198 static void VIRTUAL_DumpView( struct file_view *view )
201 char *addr = view->base;
202 BYTE prot = view->prot[0];
204 TRACE( "View: %p - %p", addr, addr + view->size - 1 );
205 if (view->protect & VPROT_SYSTEM)
206 TRACE( " (system)\n" );
207 else if (view->protect & VPROT_VALLOC)
208 TRACE( " (valloc)\n" );
209 else if (view->mapping)
210 TRACE( " %p\n", view->mapping );
212 TRACE( " (anonymous)\n");
214 for (count = i = 1; i < view->size >> page_shift; i++, count++)
216 if (view->prot[i] == prot) continue;
217 TRACE( " %p - %p %s\n",
218 addr, addr + (count << page_shift) - 1, VIRTUAL_GetProtStr(prot) );
219 addr += (count << page_shift);
220 prot = view->prot[i];
224 TRACE( " %p - %p %s\n",
225 addr, addr + (count << page_shift) - 1, VIRTUAL_GetProtStr(prot) );
229 /***********************************************************************
233 static void VIRTUAL_Dump(void)
236 struct file_view *view;
238 TRACE( "Dump of all virtual memory views:\n" );
239 server_enter_uninterrupted_section( &csVirtual, &sigset );
240 LIST_FOR_EACH_ENTRY( view, &views_list, struct file_view, entry )
242 VIRTUAL_DumpView( view );
244 server_leave_uninterrupted_section( &csVirtual, &sigset );
249 /***********************************************************************
252 * Find the view containing a given address. The csVirtual section must be held by caller.
261 static struct file_view *VIRTUAL_FindView( const void *addr, size_t size )
263 struct file_view *view;
265 LIST_FOR_EACH_ENTRY( view, &views_list, struct file_view, entry )
267 if (view->base > addr) break; /* no matching view */
268 if ((const char *)view->base + view->size <= (const char *)addr) continue;
269 if ((const char *)view->base + view->size < (const char *)addr + size) break; /* size too large */
270 if ((const char *)addr + size < (const char *)addr) break; /* overflow */
277 /***********************************************************************
280 static inline UINT_PTR get_mask( ULONG zero_bits )
282 if (!zero_bits) return 0xffff; /* allocations are aligned to 64K by default */
283 if (zero_bits < page_shift) zero_bits = page_shift;
284 return (1 << zero_bits) - 1;
288 /***********************************************************************
291 * Find the first view overlapping at least part of the specified range.
292 * The csVirtual section must be held by caller.
294 static struct file_view *find_view_range( const void *addr, size_t size )
296 struct file_view *view;
298 LIST_FOR_EACH_ENTRY( view, &views_list, struct file_view, entry )
300 if ((const char *)view->base >= (const char *)addr + size) break;
301 if ((const char *)view->base + view->size > (const char *)addr) return view;
307 /***********************************************************************
310 * Find a free area between views inside the specified range.
311 * The csVirtual section must be held by caller.
313 static void *find_free_area( void *base, void *end, size_t size, size_t mask, int top_down )
320 start = ROUND_ADDR( (char *)end - size, mask );
321 if (start >= end || start < base) return NULL;
323 for (ptr = views_list.prev; ptr != &views_list; ptr = ptr->prev)
325 struct file_view *view = LIST_ENTRY( ptr, struct file_view, entry );
327 if ((char *)view->base + view->size <= (char *)start) break;
328 if ((char *)view->base >= (char *)start + size) continue;
329 start = ROUND_ADDR( (char *)view->base - size, mask );
330 /* stop if remaining space is not large enough */
331 if (!start || start >= end || start < base) return NULL;
336 start = ROUND_ADDR( (char *)base + mask, mask );
337 if (start >= end || (char *)end - (char *)start < size) return NULL;
339 for (ptr = views_list.next; ptr != &views_list; ptr = ptr->next)
341 struct file_view *view = LIST_ENTRY( ptr, struct file_view, entry );
343 if ((char *)view->base >= (char *)start + size) break;
344 if ((char *)view->base + view->size <= (char *)start) continue;
345 start = ROUND_ADDR( (char *)view->base + view->size + mask, mask );
346 /* stop if remaining space is not large enough */
347 if (!start || start >= end || (char *)end - (char *)start < size) return NULL;
354 /***********************************************************************
357 * Add a reserved area to the list maintained by libwine.
358 * The csVirtual section must be held by caller.
360 static void add_reserved_area( void *addr, size_t size )
362 TRACE( "adding %p-%p\n", addr, (char *)addr + size );
364 if (addr < user_space_limit)
366 /* unmap the part of the area that is below the limit */
367 assert( (char *)addr + size > (char *)user_space_limit );
368 munmap( addr, (char *)user_space_limit - (char *)addr );
369 size -= (char *)user_space_limit - (char *)addr;
370 addr = user_space_limit;
372 /* blow away existing mappings */
373 wine_anon_mmap( addr, size, PROT_NONE, MAP_NORESERVE | MAP_FIXED );
374 wine_mmap_add_reserved_area( addr, size );
378 /***********************************************************************
379 * remove_reserved_area
381 * Remove a reserved area from the list maintained by libwine.
382 * The csVirtual section must be held by caller.
384 static void remove_reserved_area( void *addr, size_t size )
386 struct file_view *view;
388 TRACE( "removing %p-%p\n", addr, (char *)addr + size );
389 wine_mmap_remove_reserved_area( addr, size, 0 );
391 /* unmap areas not covered by an existing view */
392 LIST_FOR_EACH_ENTRY( view, &views_list, struct file_view, entry )
394 if ((char *)view->base >= (char *)addr + size)
396 munmap( addr, size );
399 if ((char *)view->base + view->size <= (char *)addr) continue;
400 if (view->base > addr) munmap( addr, (char *)view->base - (char *)addr );
401 if ((char *)view->base + view->size > (char *)addr + size) break;
402 size = (char *)addr + size - ((char *)view->base + view->size);
403 addr = (char *)view->base + view->size;
408 /***********************************************************************
411 * Check if an address range goes beyond a given limit.
413 static inline int is_beyond_limit( const void *addr, size_t size, const void *limit )
415 return (addr >= limit || (const char *)addr + size > (const char *)limit);
419 /***********************************************************************
422 * Unmap an area, or simply replace it by an empty mapping if it is
423 * in a reserved area. The csVirtual section must be held by caller.
425 static inline void unmap_area( void *addr, size_t size )
427 if (wine_mmap_is_in_reserved_area( addr, size ))
428 wine_anon_mmap( addr, size, PROT_NONE, MAP_NORESERVE | MAP_FIXED );
429 else if (is_beyond_limit( addr, size, user_space_limit ))
430 add_reserved_area( addr, size );
432 munmap( addr, size );
436 /***********************************************************************
439 * Deletes a view. The csVirtual section must be held by caller.
441 static void delete_view( struct file_view *view ) /* [in] View */
443 if (!(view->protect & VPROT_SYSTEM)) unmap_area( view->base, view->size );
444 list_remove( &view->entry );
445 if (view->mapping) close_handle( view->mapping );
446 RtlFreeHeap( virtual_heap, 0, view );
450 /***********************************************************************
453 * Create a view. The csVirtual section must be held by caller.
455 static NTSTATUS create_view( struct file_view **view_ret, void *base, size_t size, unsigned int vprot )
457 struct file_view *view;
459 int unix_prot = VIRTUAL_GetUnixProt( vprot );
461 assert( !((UINT_PTR)base & page_mask) );
462 assert( !(size & page_mask) );
464 /* Create the view structure */
466 if (!(view = RtlAllocateHeap( virtual_heap, 0, sizeof(*view) + (size >> page_shift) - 1 )))
468 FIXME( "out of memory in virtual heap for %p-%p\n", base, (char *)base + size );
469 return STATUS_NO_MEMORY;
475 view->map_protect = 0;
476 view->protect = vprot;
477 memset( view->prot, vprot, size >> page_shift );
479 /* Insert it in the linked list */
481 LIST_FOR_EACH( ptr, &views_list )
483 struct file_view *next = LIST_ENTRY( ptr, struct file_view, entry );
484 if (next->base > base) break;
486 list_add_before( ptr, &view->entry );
488 /* Check for overlapping views. This can happen if the previous view
489 * was a system view that got unmapped behind our back. In that case
490 * we recover by simply deleting it. */
492 if ((ptr = list_prev( &views_list, &view->entry )) != NULL)
494 struct file_view *prev = LIST_ENTRY( ptr, struct file_view, entry );
495 if ((char *)prev->base + prev->size > (char *)base)
497 TRACE( "overlapping prev view %p-%p for %p-%p\n",
498 prev->base, (char *)prev->base + prev->size,
499 base, (char *)base + view->size );
500 assert( prev->protect & VPROT_SYSTEM );
504 if ((ptr = list_next( &views_list, &view->entry )) != NULL)
506 struct file_view *next = LIST_ENTRY( ptr, struct file_view, entry );
507 if ((char *)base + view->size > (char *)next->base)
509 TRACE( "overlapping next view %p-%p for %p-%p\n",
510 next->base, (char *)next->base + next->size,
511 base, (char *)base + view->size );
512 assert( next->protect & VPROT_SYSTEM );
518 VIRTUAL_DEBUG_DUMP_VIEW( view );
520 if (force_exec_prot && !(vprot & VPROT_NOEXEC) && (unix_prot & PROT_READ) && !(unix_prot & PROT_EXEC))
522 TRACE( "forcing exec permission on %p-%p\n", base, (char *)base + size - 1 );
523 mprotect( base, size, unix_prot | PROT_EXEC );
525 return STATUS_SUCCESS;
529 /***********************************************************************
530 * VIRTUAL_GetWin32Prot
532 * Convert page protections to Win32 flags.
534 static DWORD VIRTUAL_GetWin32Prot( BYTE vprot )
536 DWORD ret = VIRTUAL_Win32Flags[vprot & 0x0f];
537 if (vprot & VPROT_NOCACHE) ret |= PAGE_NOCACHE;
538 if (vprot & VPROT_GUARD) ret |= PAGE_GUARD;
543 /***********************************************************************
546 * Build page protections from Win32 flags.
549 * protect [I] Win32 protection flags
552 * Value of page protection flags
554 static NTSTATUS get_vprot_flags( DWORD protect, unsigned int *vprot, BOOL image )
556 switch(protect & 0xff)
563 *vprot = VPROT_READ | VPROT_WRITECOPY;
565 *vprot = VPROT_READ | VPROT_WRITE;
568 *vprot = VPROT_READ | VPROT_WRITECOPY;
573 case PAGE_EXECUTE_READ:
574 *vprot = VPROT_EXEC | VPROT_READ;
576 case PAGE_EXECUTE_READWRITE:
578 *vprot = VPROT_EXEC | VPROT_READ | VPROT_WRITECOPY;
580 *vprot = VPROT_EXEC | VPROT_READ | VPROT_WRITE;
582 case PAGE_EXECUTE_WRITECOPY:
583 *vprot = VPROT_EXEC | VPROT_READ | VPROT_WRITECOPY;
589 return STATUS_INVALID_PAGE_PROTECTION;
591 if (protect & PAGE_GUARD) *vprot |= VPROT_GUARD;
592 if (protect & PAGE_NOCACHE) *vprot |= VPROT_NOCACHE;
593 return STATUS_SUCCESS;
597 /***********************************************************************
600 * Change the protection of a range of pages.
606 static BOOL VIRTUAL_SetProt( struct file_view *view, /* [in] Pointer to view */
607 void *base, /* [in] Starting address */
608 size_t size, /* [in] Size in bytes */
609 BYTE vprot ) /* [in] Protections to use */
611 int unix_prot = VIRTUAL_GetUnixProt(vprot);
612 BYTE *p = view->prot + (((char *)base - (char *)view->base) >> page_shift);
615 base, (char *)base + size - 1, VIRTUAL_GetProtStr( vprot ) );
617 if (view->protect & VPROT_WRITEWATCH)
619 /* each page may need different protections depending on write watch flag */
624 p[0] = vprot | (p[0] & VPROT_WRITEWATCH);
625 unix_prot = VIRTUAL_GetUnixProt( p[0] );
626 for (count = i = 1; i < size >> page_shift; i++, count++)
628 p[i] = vprot | (p[i] & VPROT_WRITEWATCH);
629 prot = VIRTUAL_GetUnixProt( p[i] );
630 if (prot == unix_prot) continue;
631 mprotect( addr, count << page_shift, unix_prot );
632 addr += count << page_shift;
636 if (count) mprotect( addr, count << page_shift, unix_prot );
637 VIRTUAL_DEBUG_DUMP_VIEW( view );
641 /* if setting stack guard pages, store the permissions first, as the guard may be
642 * triggered at any point after mprotect and change the permissions again */
643 if ((vprot & VPROT_GUARD) &&
644 (base >= NtCurrentTeb()->DeallocationStack) &&
645 (base < NtCurrentTeb()->Tib.StackBase))
647 memset( p, vprot, size >> page_shift );
648 mprotect( base, size, unix_prot );
649 VIRTUAL_DEBUG_DUMP_VIEW( view );
653 if (force_exec_prot && !(view->protect & VPROT_NOEXEC) &&
654 (unix_prot & PROT_READ) && !(unix_prot & PROT_EXEC))
656 TRACE( "forcing exec permission on %p-%p\n", base, (char *)base + size - 1 );
657 if (!mprotect( base, size, unix_prot | PROT_EXEC )) goto done;
658 /* exec + write may legitimately fail, in that case fall back to write only */
659 if (!(unix_prot & PROT_WRITE)) return FALSE;
662 if (mprotect( base, size, unix_prot )) return FALSE; /* FIXME: last error */
665 memset( p, vprot, size >> page_shift );
666 VIRTUAL_DEBUG_DUMP_VIEW( view );
671 /***********************************************************************
672 * reset_write_watches
674 * Reset write watches in a memory range.
676 static void reset_write_watches( struct file_view *view, void *base, SIZE_T size )
681 BYTE *p = view->prot + ((addr - (char *)view->base) >> page_shift);
683 p[0] |= VPROT_WRITEWATCH;
684 unix_prot = VIRTUAL_GetUnixProt( p[0] );
685 for (count = i = 1; i < size >> page_shift; i++, count++)
687 p[i] |= VPROT_WRITEWATCH;
688 prot = VIRTUAL_GetUnixProt( p[i] );
689 if (prot == unix_prot) continue;
690 mprotect( addr, count << page_shift, unix_prot );
691 addr += count << page_shift;
695 if (count) mprotect( addr, count << page_shift, unix_prot );
699 /***********************************************************************
702 * Release the extra memory while keeping the range starting on the granularity boundary.
704 static inline void *unmap_extra_space( void *ptr, size_t total_size, size_t wanted_size, size_t mask )
706 if ((ULONG_PTR)ptr & mask)
708 size_t extra = mask + 1 - ((ULONG_PTR)ptr & mask);
709 munmap( ptr, extra );
710 ptr = (char *)ptr + extra;
713 if (total_size > wanted_size)
714 munmap( (char *)ptr + wanted_size, total_size - wanted_size );
728 /***********************************************************************
729 * alloc_reserved_area_callback
731 * Try to map some space inside a reserved area. Callback for wine_mmap_enum_reserved_areas.
733 static int alloc_reserved_area_callback( void *start, size_t size, void *arg )
735 struct alloc_area *alloc = arg;
736 void *end = (char *)start + size;
738 if (start < address_space_start) start = address_space_start;
739 if (is_beyond_limit( start, size, alloc->limit )) end = alloc->limit;
740 if (start >= end) return 0;
742 /* make sure we don't touch the preloader reserved range */
743 if (preload_reserve_end >= start)
745 if (preload_reserve_end >= end)
747 if (preload_reserve_start <= start) return 0; /* no space in that area */
748 if (preload_reserve_start < end) end = preload_reserve_start;
750 else if (preload_reserve_start <= start) start = preload_reserve_end;
753 /* range is split in two by the preloader reservation, try first part */
754 if ((alloc->result = find_free_area( start, preload_reserve_start, alloc->size,
755 alloc->mask, alloc->top_down )))
757 /* then fall through to try second part */
758 start = preload_reserve_end;
761 if ((alloc->result = find_free_area( start, end, alloc->size, alloc->mask, alloc->top_down )))
768 /***********************************************************************
771 * Create a view and mmap the corresponding memory area.
772 * The csVirtual section must be held by caller.
774 static NTSTATUS map_view( struct file_view **view_ret, void *base, size_t size, size_t mask,
775 int top_down, unsigned int vprot )
782 if (is_beyond_limit( base, size, address_space_limit ))
783 return STATUS_WORKING_SET_LIMIT_RANGE;
785 switch (wine_mmap_is_in_reserved_area( base, size ))
787 case -1: /* partially in a reserved area */
788 return STATUS_CONFLICTING_ADDRESSES;
790 case 0: /* not in a reserved area, do a normal allocation */
791 if ((ptr = wine_anon_mmap( base, size, VIRTUAL_GetUnixProt(vprot), 0 )) == (void *)-1)
793 if (errno == ENOMEM) return STATUS_NO_MEMORY;
794 return STATUS_INVALID_PARAMETER;
798 /* We couldn't get the address we wanted */
799 if (is_beyond_limit( ptr, size, user_space_limit )) add_reserved_area( ptr, size );
800 else munmap( ptr, size );
801 return STATUS_CONFLICTING_ADDRESSES;
806 case 1: /* in a reserved area, make sure the address is available */
807 if (find_view_range( base, size )) return STATUS_CONFLICTING_ADDRESSES;
808 /* replace the reserved area by our mapping */
809 if ((ptr = wine_anon_mmap( base, size, VIRTUAL_GetUnixProt(vprot), MAP_FIXED )) != base)
810 return STATUS_INVALID_PARAMETER;
813 if (is_beyond_limit( ptr, size, working_set_limit )) working_set_limit = address_space_limit;
817 size_t view_size = size + mask + 1;
818 struct alloc_area alloc;
822 alloc.top_down = top_down;
823 alloc.limit = user_space_limit;
824 if (wine_mmap_enum_reserved_areas( alloc_reserved_area_callback, &alloc, top_down ))
827 TRACE( "got mem in reserved area %p-%p\n", ptr, (char *)ptr + size );
828 if (wine_anon_mmap( ptr, size, VIRTUAL_GetUnixProt(vprot), MAP_FIXED ) != ptr)
829 return STATUS_INVALID_PARAMETER;
835 if ((ptr = wine_anon_mmap( NULL, view_size, VIRTUAL_GetUnixProt(vprot), 0 )) == (void *)-1)
837 if (errno == ENOMEM) return STATUS_NO_MEMORY;
838 return STATUS_INVALID_PARAMETER;
840 TRACE( "got mem with anon mmap %p-%p\n", ptr, (char *)ptr + size );
841 /* if we got something beyond the user limit, unmap it and retry */
842 if (is_beyond_limit( ptr, view_size, user_space_limit )) add_reserved_area( ptr, view_size );
845 ptr = unmap_extra_space( ptr, view_size, size, mask );
848 status = create_view( view_ret, ptr, size, vprot );
849 if (status != STATUS_SUCCESS) unmap_area( ptr, size );
854 /***********************************************************************
857 * Wrapper for mmap() to map a file into a view, falling back to read if mmap fails.
858 * The csVirtual section must be held by caller.
860 static NTSTATUS map_file_into_view( struct file_view *view, int fd, size_t start, size_t size,
861 off_t offset, unsigned int vprot, BOOL removable )
864 int prot = VIRTUAL_GetUnixProt( vprot | VPROT_COMMITTED /* make sure it is accessible */ );
865 BOOL shared_write = (vprot & VPROT_WRITE) != 0;
867 assert( start < view->size );
868 assert( start + size <= view->size );
870 if (force_exec_prot && !(vprot & VPROT_NOEXEC) && (vprot & VPROT_READ))
872 TRACE( "forcing exec permission on mapping %p-%p\n",
873 (char *)view->base + start, (char *)view->base + start + size - 1 );
877 /* only try mmap if media is not removable (or if we require write access) */
878 if (!removable || shared_write)
880 int flags = MAP_FIXED | (shared_write ? MAP_SHARED : MAP_PRIVATE);
882 if (mmap( (char *)view->base + start, size, prot, flags, fd, offset ) != (void *)-1)
885 if ((errno == EPERM) && (prot & PROT_EXEC))
886 ERR( "failed to set %08x protection on file map, noexec filesystem?\n", prot );
888 /* mmap() failed; if this is because the file offset is not */
889 /* page-aligned (EINVAL), or because the underlying filesystem */
890 /* does not support mmap() (ENOEXEC,ENODEV), we do it by hand. */
891 if ((errno != ENOEXEC) && (errno != EINVAL) && (errno != ENODEV)) return FILE_GetNtStatus();
892 if (shared_write) /* we cannot fake shared write mappings */
894 if (errno == EINVAL) return STATUS_INVALID_PARAMETER;
895 ERR( "shared writable mmap not supported, broken filesystem?\n" );
896 return STATUS_NOT_SUPPORTED;
900 /* Reserve the memory with an anonymous mmap */
901 ptr = wine_anon_mmap( (char *)view->base + start, size, PROT_READ | PROT_WRITE, MAP_FIXED );
902 if (ptr == (void *)-1) return FILE_GetNtStatus();
903 /* Now read in the file */
904 pread( fd, ptr, size, offset );
905 if (prot != (PROT_READ|PROT_WRITE)) mprotect( ptr, size, prot ); /* Set the right protection */
907 memset( view->prot + (start >> page_shift), vprot, ROUND_SIZE(start,size) >> page_shift );
908 return STATUS_SUCCESS;
912 /***********************************************************************
915 * Get the size of the committed range starting at base.
916 * Also return the protections for the first page.
918 static SIZE_T get_committed_size( struct file_view *view, void *base, BYTE *vprot )
922 start = ((char *)base - (char *)view->base) >> page_shift;
923 *vprot = view->prot[start];
925 if (view->mapping && !(view->protect & VPROT_COMMITTED))
928 SERVER_START_REQ( get_mapping_committed_range )
930 req->handle = wine_server_obj_handle( view->mapping );
931 req->offset = start << page_shift;
932 if (!wine_server_call( req ))
935 if (reply->committed)
937 *vprot |= VPROT_COMMITTED;
938 for (i = 0; i < ret >> page_shift; i++) view->prot[start+i] |= VPROT_COMMITTED;
945 for (i = start + 1; i < view->size >> page_shift; i++)
946 if ((*vprot ^ view->prot[i]) & VPROT_COMMITTED) break;
947 return (i - start) << page_shift;
951 /***********************************************************************
954 * Decommit some pages of a given view.
955 * The csVirtual section must be held by caller.
957 static NTSTATUS decommit_pages( struct file_view *view, size_t start, size_t size )
959 if (wine_anon_mmap( (char *)view->base + start, size, PROT_NONE, MAP_FIXED ) != (void *)-1)
961 BYTE *p = view->prot + (start >> page_shift);
963 while (size--) *p++ &= ~VPROT_COMMITTED;
964 return STATUS_SUCCESS;
966 return FILE_GetNtStatus();
970 /***********************************************************************
971 * allocate_dos_memory
973 * Allocate the DOS memory range.
975 static NTSTATUS allocate_dos_memory( struct file_view **view, unsigned int vprot )
979 void * const low_64k = (void *)0x10000;
980 const size_t dosmem_size = 0x110000;
981 int unix_prot = VIRTUAL_GetUnixProt( vprot );
984 /* check for existing view */
986 if ((ptr = list_head( &views_list )))
988 struct file_view *first_view = LIST_ENTRY( ptr, struct file_view, entry );
989 if (first_view->base < (void *)dosmem_size) return STATUS_CONFLICTING_ADDRESSES;
992 /* check without the first 64K */
994 if (wine_mmap_is_in_reserved_area( low_64k, dosmem_size - 0x10000 ) != 1)
996 addr = wine_anon_mmap( low_64k, dosmem_size - 0x10000, unix_prot, 0 );
999 if (addr != (void *)-1) munmap( addr, dosmem_size - 0x10000 );
1000 return map_view( view, NULL, dosmem_size, 0xffff, 0, vprot );
1004 /* now try to allocate the low 64K too */
1006 if (wine_mmap_is_in_reserved_area( NULL, 0x10000 ) != 1)
1008 addr = wine_anon_mmap( (void *)page_size, 0x10000 - page_size, unix_prot, 0 );
1009 if (addr == (void *)page_size)
1011 if (!wine_anon_mmap( NULL, page_size, unix_prot, MAP_FIXED ))
1014 TRACE( "successfully mapped low 64K range\n" );
1016 else TRACE( "failed to map page 0\n" );
1020 if (addr != (void *)-1) munmap( addr, 0x10000 - page_size );
1022 TRACE( "failed to map low 64K range\n" );
1026 /* now reserve the whole range */
1028 size = (char *)dosmem_size - (char *)addr;
1029 wine_anon_mmap( addr, size, unix_prot, MAP_FIXED );
1030 return create_view( view, addr, size, vprot );
1034 /***********************************************************************
1035 * check_architecture
1037 * Check the architecture of a PE binary.
1039 static NTSTATUS check_architecture( const IMAGE_NT_HEADERS *nt )
1041 static const char *arch;
1044 if (nt->FileHeader.Machine == IMAGE_FILE_MACHINE_I386) return STATUS_SUCCESS;
1045 if (nt->FileHeader.Machine == IMAGE_FILE_MACHINE_AMD64)
1047 if (nt->FileHeader.Characteristics & IMAGE_FILE_DLL) /* don't warn for a 64-bit exe */
1048 WARN( "loading amd64 dll in 32-bit mode will fail\n" );
1049 return STATUS_INVALID_IMAGE_FORMAT;
1051 #elif defined(__x86_64__)
1052 if (nt->FileHeader.Machine == IMAGE_FILE_MACHINE_AMD64) return STATUS_SUCCESS;
1053 if (nt->FileHeader.Machine == IMAGE_FILE_MACHINE_I386)
1055 if (nt->FileHeader.Characteristics & IMAGE_FILE_DLL) /* don't warn for a 32-bit exe */
1056 WARN( "loading 32-bit dll in 64-bit mode will fail\n" );
1057 return STATUS_INVALID_IMAGE_FORMAT;
1059 #elif defined(__arm__) && !defined(__ARMEB__)
1060 if (nt->FileHeader.Machine == IMAGE_FILE_MACHINE_ARM ||
1061 nt->FileHeader.Machine == IMAGE_FILE_MACHINE_THUMB)
1062 return STATUS_SUCCESS;
1063 if (nt->FileHeader.Machine == IMAGE_FILE_MACHINE_ARMNT)
1065 SYSTEM_CPU_INFORMATION sci;
1066 if (SUCCEEDED(NtQuerySystemInformation( SystemCpuInformation, &sci, sizeof(sci), NULL )) &&
1067 sci.Architecture == PROCESSOR_ARCHITECTURE_ARM && sci.Level >= 7)
1068 return STATUS_SUCCESS;
1072 switch (nt->FileHeader.Machine)
1074 case IMAGE_FILE_MACHINE_UNKNOWN: arch = "Unknown"; break;
1075 case IMAGE_FILE_MACHINE_I860: arch = "I860"; break;
1076 case IMAGE_FILE_MACHINE_I386: arch = "I386"; break;
1077 case IMAGE_FILE_MACHINE_R3000: arch = "R3000"; break;
1078 case IMAGE_FILE_MACHINE_R4000: arch = "R4000"; break;
1079 case IMAGE_FILE_MACHINE_R10000: arch = "R10000"; break;
1080 case IMAGE_FILE_MACHINE_ALPHA: arch = "Alpha"; break;
1081 case IMAGE_FILE_MACHINE_POWERPC: arch = "PowerPC"; break;
1082 case IMAGE_FILE_MACHINE_IA64: arch = "IA-64"; break;
1083 case IMAGE_FILE_MACHINE_ALPHA64: arch = "Alpha-64"; break;
1084 case IMAGE_FILE_MACHINE_AMD64: arch = "AMD-64"; break;
1085 case IMAGE_FILE_MACHINE_ARM: arch = "ARM"; break;
1086 case IMAGE_FILE_MACHINE_ARMNT: arch = "ARMNT"; break;
1087 case IMAGE_FILE_MACHINE_THUMB: arch = "ARM Thumb"; break;
1088 case IMAGE_FILE_MACHINE_SPARC: arch = "SPARC"; break;
1089 default: arch = wine_dbg_sprintf( "Unknown-%04x", nt->FileHeader.Machine ); break;
1091 ERR( "Trying to load PE image for unsupported architecture %s\n", arch );
1092 return STATUS_INVALID_IMAGE_FORMAT;
1096 /***********************************************************************
1099 * Stat the underlying file for a memory view.
1101 static NTSTATUS stat_mapping_file( struct file_view *view, struct stat *st )
1104 int unix_fd, needs_close;
1106 if (!view->mapping) return STATUS_NOT_MAPPED_VIEW;
1107 if (!(status = server_get_unix_fd( view->mapping, 0, &unix_fd, &needs_close, NULL, NULL )))
1109 if (fstat( unix_fd, st ) == -1) status = FILE_GetNtStatus();
1110 if (needs_close) close( unix_fd );
1116 /***********************************************************************
1119 * Map an executable (PE format) image into memory.
1121 static NTSTATUS map_image( HANDLE hmapping, int fd, char *base, SIZE_T total_size, SIZE_T mask,
1122 SIZE_T header_size, int shared_fd, HANDLE dup_mapping, unsigned int map_vprot, PVOID *addr_ptr )
1124 IMAGE_DOS_HEADER *dos;
1125 IMAGE_NT_HEADERS *nt;
1126 IMAGE_SECTION_HEADER sections[96];
1127 IMAGE_SECTION_HEADER *sec;
1128 IMAGE_DATA_DIRECTORY *imports;
1129 NTSTATUS status = STATUS_CONFLICTING_ADDRESSES;
1134 struct file_view *view = NULL;
1135 char *ptr, *header_end, *header_start;
1138 /* zero-map the whole range */
1140 server_enter_uninterrupted_section( &csVirtual, &sigset );
1142 if (base >= (char *)address_space_start) /* make sure the DOS area remains free */
1143 status = map_view( &view, base, total_size, mask, FALSE,
1144 VPROT_COMMITTED | VPROT_READ | VPROT_EXEC | VPROT_WRITECOPY | VPROT_IMAGE );
1146 if (status != STATUS_SUCCESS)
1147 status = map_view( &view, NULL, total_size, mask, FALSE,
1148 VPROT_COMMITTED | VPROT_READ | VPROT_EXEC | VPROT_WRITECOPY | VPROT_IMAGE );
1150 if (status != STATUS_SUCCESS) goto error;
1153 TRACE_(module)( "mapped PE file at %p-%p\n", ptr, ptr + total_size );
1155 /* map the header */
1157 if (fstat( fd, &st ) == -1)
1159 status = FILE_GetNtStatus();
1162 status = STATUS_INVALID_IMAGE_FORMAT; /* generic error */
1163 if (!st.st_size) goto error;
1164 header_size = min( header_size, st.st_size );
1165 if (map_file_into_view( view, fd, 0, header_size, 0, VPROT_COMMITTED | VPROT_READ | VPROT_WRITECOPY,
1166 !dup_mapping ) != STATUS_SUCCESS) goto error;
1167 dos = (IMAGE_DOS_HEADER *)ptr;
1168 nt = (IMAGE_NT_HEADERS *)(ptr + dos->e_lfanew);
1169 header_end = ptr + ROUND_SIZE( 0, header_size );
1170 memset( ptr + header_size, 0, header_end - (ptr + header_size) );
1171 if ((char *)(nt + 1) > header_end) goto error;
1172 header_start = (char*)&nt->OptionalHeader+nt->FileHeader.SizeOfOptionalHeader;
1173 if (nt->FileHeader.NumberOfSections > sizeof(sections)/sizeof(*sections)) goto error;
1174 if (header_start + sizeof(*sections) * nt->FileHeader.NumberOfSections > header_end) goto error;
1175 /* Some applications (e.g. the Steam version of Borderlands) map over the top of the section headers,
1176 * copying the headers into local memory is necessary to properly load such applications. */
1177 memcpy(sections, header_start, sizeof(*sections) * nt->FileHeader.NumberOfSections);
1180 imports = nt->OptionalHeader.DataDirectory + IMAGE_DIRECTORY_ENTRY_IMPORT;
1181 if (!imports->Size || !imports->VirtualAddress) imports = NULL;
1183 if (check_architecture( nt )) goto error;
1185 /* check for non page-aligned binary */
1187 if (nt->OptionalHeader.SectionAlignment <= page_mask)
1189 /* unaligned sections, this happens for native subsystem binaries */
1190 /* in that case Windows simply maps in the whole file */
1192 if (map_file_into_view( view, fd, 0, total_size, 0, VPROT_COMMITTED | VPROT_READ,
1193 !dup_mapping ) != STATUS_SUCCESS) goto error;
1195 /* check that all sections are loaded at the right offset */
1196 if (nt->OptionalHeader.FileAlignment != nt->OptionalHeader.SectionAlignment) goto error;
1197 for (i = 0; i < nt->FileHeader.NumberOfSections; i++)
1199 if (sec[i].VirtualAddress != sec[i].PointerToRawData)
1200 goto error; /* Windows refuses to load in that case too */
1203 /* set the image protections */
1204 VIRTUAL_SetProt( view, ptr, total_size,
1205 VPROT_COMMITTED | VPROT_READ | VPROT_WRITECOPY | VPROT_EXEC );
1207 /* no relocations are performed on non page-aligned binaries */
1212 /* map all the sections */
1214 for (i = pos = 0; i < nt->FileHeader.NumberOfSections; i++, sec++)
1216 static const SIZE_T sector_align = 0x1ff;
1217 SIZE_T map_size, file_start, file_size, end;
1219 if (!sec->Misc.VirtualSize)
1220 map_size = ROUND_SIZE( 0, sec->SizeOfRawData );
1222 map_size = ROUND_SIZE( 0, sec->Misc.VirtualSize );
1224 /* file positions are rounded to sector boundaries regardless of OptionalHeader.FileAlignment */
1225 file_start = sec->PointerToRawData & ~sector_align;
1226 file_size = (sec->SizeOfRawData + (sec->PointerToRawData & sector_align) + sector_align) & ~sector_align;
1227 if (file_size > map_size) file_size = map_size;
1229 /* a few sanity checks */
1230 end = sec->VirtualAddress + ROUND_SIZE( sec->VirtualAddress, map_size );
1231 if (sec->VirtualAddress > total_size || end > total_size || end < sec->VirtualAddress)
1233 WARN_(module)( "Section %.8s too large (%x+%lx/%lx)\n",
1234 sec->Name, sec->VirtualAddress, map_size, total_size );
1238 if ((sec->Characteristics & IMAGE_SCN_MEM_SHARED) &&
1239 (sec->Characteristics & IMAGE_SCN_MEM_WRITE))
1241 TRACE_(module)( "mapping shared section %.8s at %p off %x (%x) size %lx (%lx) flags %x\n",
1242 sec->Name, ptr + sec->VirtualAddress,
1243 sec->PointerToRawData, (int)pos, file_size, map_size,
1244 sec->Characteristics );
1245 if (map_file_into_view( view, shared_fd, sec->VirtualAddress, map_size, pos,
1246 VPROT_COMMITTED | VPROT_READ | VPROT_WRITE,
1247 FALSE ) != STATUS_SUCCESS)
1249 ERR_(module)( "Could not map shared section %.8s\n", sec->Name );
1253 /* check if the import directory falls inside this section */
1254 if (imports && imports->VirtualAddress >= sec->VirtualAddress &&
1255 imports->VirtualAddress < sec->VirtualAddress + map_size)
1257 UINT_PTR base = imports->VirtualAddress & ~page_mask;
1258 UINT_PTR end = base + ROUND_SIZE( imports->VirtualAddress, imports->Size );
1259 if (end > sec->VirtualAddress + map_size) end = sec->VirtualAddress + map_size;
1261 map_file_into_view( view, shared_fd, base, end - base,
1262 pos + (base - sec->VirtualAddress),
1263 VPROT_COMMITTED | VPROT_READ | VPROT_WRITECOPY,
1270 TRACE_(module)( "mapping section %.8s at %p off %x size %x virt %x flags %x\n",
1271 sec->Name, ptr + sec->VirtualAddress,
1272 sec->PointerToRawData, sec->SizeOfRawData,
1273 sec->Misc.VirtualSize, sec->Characteristics );
1275 if (!sec->PointerToRawData || !file_size) continue;
1277 /* Note: if the section is not aligned properly map_file_into_view will magically
1278 * fall back to read(), so we don't need to check anything here.
1280 end = file_start + file_size;
1281 if (sec->PointerToRawData >= st.st_size ||
1282 end > ((st.st_size + sector_align) & ~sector_align) ||
1284 map_file_into_view( view, fd, sec->VirtualAddress, file_size, file_start,
1285 VPROT_COMMITTED | VPROT_READ | VPROT_WRITECOPY,
1286 !dup_mapping ) != STATUS_SUCCESS)
1288 ERR_(module)( "Could not map section %.8s, file probably truncated\n", sec->Name );
1292 if (file_size & page_mask)
1294 end = ROUND_SIZE( 0, file_size );
1295 if (end > map_size) end = map_size;
1296 TRACE_(module)("clearing %p - %p\n",
1297 ptr + sec->VirtualAddress + file_size,
1298 ptr + sec->VirtualAddress + end );
1299 memset( ptr + sec->VirtualAddress + file_size, 0, end - file_size );
1304 /* perform base relocation, if necessary */
1307 ((nt->FileHeader.Characteristics & IMAGE_FILE_DLL) ||
1308 !NtCurrentTeb()->Peb->ImageBaseAddress) )
1310 IMAGE_BASE_RELOCATION *rel, *end;
1311 const IMAGE_DATA_DIRECTORY *relocs;
1313 if (nt->FileHeader.Characteristics & IMAGE_FILE_RELOCS_STRIPPED)
1315 WARN_(module)( "Need to relocate module from %p to %p, but there are no relocation records\n",
1317 status = STATUS_CONFLICTING_ADDRESSES;
1321 TRACE_(module)( "relocating from %p-%p to %p-%p\n",
1322 base, base + total_size, ptr, ptr + total_size );
1324 relocs = &nt->OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_BASERELOC];
1325 rel = (IMAGE_BASE_RELOCATION *)(ptr + relocs->VirtualAddress);
1326 end = (IMAGE_BASE_RELOCATION *)(ptr + relocs->VirtualAddress + relocs->Size);
1329 while (rel < end - 1 && rel->SizeOfBlock)
1331 if (rel->VirtualAddress >= total_size)
1333 WARN_(module)( "invalid address %p in relocation %p\n", ptr + rel->VirtualAddress, rel );
1334 status = STATUS_ACCESS_VIOLATION;
1337 rel = LdrProcessRelocationBlock( ptr + rel->VirtualAddress,
1338 (rel->SizeOfBlock - sizeof(*rel)) / sizeof(USHORT),
1339 (USHORT *)(rel + 1), delta );
1340 if (!rel) goto error;
1344 /* set the image protections */
1346 VIRTUAL_SetProt( view, ptr, ROUND_SIZE( 0, header_size ), VPROT_COMMITTED | VPROT_READ );
1349 for (i = 0; i < nt->FileHeader.NumberOfSections; i++, sec++)
1352 BYTE vprot = VPROT_COMMITTED;
1354 if (sec->Misc.VirtualSize)
1355 size = ROUND_SIZE( sec->VirtualAddress, sec->Misc.VirtualSize );
1357 size = ROUND_SIZE( sec->VirtualAddress, sec->SizeOfRawData );
1359 if (sec->Characteristics & IMAGE_SCN_MEM_READ) vprot |= VPROT_READ;
1360 if (sec->Characteristics & IMAGE_SCN_MEM_WRITE) vprot |= VPROT_WRITECOPY;
1361 if (sec->Characteristics & IMAGE_SCN_MEM_EXECUTE) vprot |= VPROT_EXEC;
1363 /* Dumb game crack lets the AOEP point into a data section. Adjust. */
1364 if ((nt->OptionalHeader.AddressOfEntryPoint >= sec->VirtualAddress) &&
1365 (nt->OptionalHeader.AddressOfEntryPoint < sec->VirtualAddress + size))
1366 vprot |= VPROT_EXEC;
1368 if (!VIRTUAL_SetProt( view, ptr + sec->VirtualAddress, size, vprot ) && (vprot & VPROT_EXEC))
1369 ERR( "failed to set %08x protection on section %.8s, noexec filesystem?\n",
1370 sec->Characteristics, sec->Name );
1374 view->mapping = dup_mapping;
1375 view->map_protect = map_vprot;
1376 server_leave_uninterrupted_section( &csVirtual, &sigset );
1379 #ifdef VALGRIND_LOAD_PDB_DEBUGINFO
1380 VALGRIND_LOAD_PDB_DEBUGINFO(fd, ptr, total_size, delta);
1382 if (ptr != base) return STATUS_IMAGE_NOT_AT_BASE;
1383 return STATUS_SUCCESS;
1386 if (view) delete_view( view );
1387 server_leave_uninterrupted_section( &csVirtual, &sigset );
1388 if (dup_mapping) NtClose( dup_mapping );
1393 /* callback for wine_mmap_enum_reserved_areas to allocate space for the virtual heap */
1394 static int alloc_virtual_heap( void *base, size_t size, void *arg )
1396 void **heap_base = arg;
1398 if (is_beyond_limit( base, size, address_space_limit )) address_space_limit = (char *)base + size;
1399 if (size < VIRTUAL_HEAP_SIZE) return 0;
1400 if (is_win64 && base < (void *)0x80000000) return 0;
1401 *heap_base = wine_anon_mmap( (char *)base + size - VIRTUAL_HEAP_SIZE,
1402 VIRTUAL_HEAP_SIZE, PROT_READ|PROT_WRITE, MAP_FIXED );
1403 return (*heap_base != (void *)-1);
1406 /***********************************************************************
1409 void virtual_init(void)
1411 const char *preload;
1414 struct file_view *heap_view;
1416 #if !defined(__i386__) && !defined(__x86_64__)
1417 page_size = sysconf( _SC_PAGESIZE );
1418 page_mask = page_size - 1;
1419 /* Make sure we have a power of 2 */
1420 assert( !(page_size & page_mask) );
1422 while ((1 << page_shift) != page_size) page_shift++;
1423 user_space_limit = working_set_limit = address_space_limit = (void *)~page_mask;
1424 #endif /* page_mask */
1425 if ((preload = getenv("WINEPRELOADRESERVE")))
1427 unsigned long start, end;
1428 if (sscanf( preload, "%lx-%lx", &start, &end ) == 2)
1430 preload_reserve_start = (void *)start;
1431 preload_reserve_end = (void *)end;
1435 /* try to find space in a reserved area for the virtual heap */
1436 if (!wine_mmap_enum_reserved_areas( alloc_virtual_heap, &heap_base, 1 ))
1437 heap_base = wine_anon_mmap( NULL, VIRTUAL_HEAP_SIZE, PROT_READ|PROT_WRITE, 0 );
1439 assert( heap_base != (void *)-1 );
1440 virtual_heap = RtlCreateHeap( HEAP_NO_SERIALIZE, heap_base, VIRTUAL_HEAP_SIZE,
1441 VIRTUAL_HEAP_SIZE, NULL, NULL );
1442 create_view( &heap_view, heap_base, VIRTUAL_HEAP_SIZE, VPROT_COMMITTED | VPROT_READ | VPROT_WRITE );
1444 /* make the DOS area accessible (except the low 64K) to hide bugs in broken apps like Excel 2003 */
1445 size = (char *)address_space_start - (char *)0x10000;
1446 if (size && wine_mmap_is_in_reserved_area( (void*)0x10000, size ) == 1)
1447 wine_anon_mmap( (void *)0x10000, size, PROT_READ | PROT_WRITE, MAP_FIXED );
1451 /***********************************************************************
1452 * virtual_init_threading
1454 void virtual_init_threading(void)
1460 /***********************************************************************
1461 * virtual_get_system_info
1463 void virtual_get_system_info( SYSTEM_BASIC_INFORMATION *info )
1466 info->KeMaximumIncrement = 0; /* FIXME */
1467 info->PageSize = page_size;
1468 info->MmLowestPhysicalPage = 1;
1469 info->MmHighestPhysicalPage = 0x7fffffff / page_size;
1470 info->MmNumberOfPhysicalPages = info->MmHighestPhysicalPage - info->MmLowestPhysicalPage;
1471 info->AllocationGranularity = get_mask(0) + 1;
1472 info->LowestUserAddress = (void *)0x10000;
1473 info->HighestUserAddress = (char *)user_space_limit - 1;
1474 info->ActiveProcessorsAffinityMask = (1 << NtCurrentTeb()->Peb->NumberOfProcessors) - 1;
1475 info->NumberOfProcessors = NtCurrentTeb()->Peb->NumberOfProcessors;
1479 /***********************************************************************
1480 * virtual_create_builtin_view
1482 NTSTATUS virtual_create_builtin_view( void *module )
1486 IMAGE_NT_HEADERS *nt = RtlImageNtHeader( module );
1487 SIZE_T size = nt->OptionalHeader.SizeOfImage;
1488 IMAGE_SECTION_HEADER *sec;
1489 struct file_view *view;
1493 size = ROUND_SIZE( module, size );
1494 base = ROUND_ADDR( module, page_mask );
1495 server_enter_uninterrupted_section( &csVirtual, &sigset );
1496 status = create_view( &view, base, size, VPROT_SYSTEM | VPROT_IMAGE |
1497 VPROT_COMMITTED | VPROT_READ | VPROT_WRITECOPY | VPROT_EXEC );
1498 if (!status) TRACE( "created %p-%p\n", base, (char *)base + size );
1499 server_leave_uninterrupted_section( &csVirtual, &sigset );
1501 if (status) return status;
1503 /* The PE header is always read-only, no write, no execute. */
1504 view->prot[0] = VPROT_COMMITTED | VPROT_READ;
1506 sec = (IMAGE_SECTION_HEADER *)((char *)&nt->OptionalHeader + nt->FileHeader.SizeOfOptionalHeader);
1507 for (i = 0; i < nt->FileHeader.NumberOfSections; i++)
1509 BYTE flags = VPROT_COMMITTED;
1511 if (sec[i].Characteristics & IMAGE_SCN_MEM_EXECUTE) flags |= VPROT_EXEC;
1512 if (sec[i].Characteristics & IMAGE_SCN_MEM_READ) flags |= VPROT_READ;
1513 if (sec[i].Characteristics & IMAGE_SCN_MEM_WRITE) flags |= VPROT_WRITE;
1514 memset (view->prot + (sec[i].VirtualAddress >> page_shift), flags,
1515 ROUND_SIZE( sec[i].VirtualAddress, sec[i].Misc.VirtualSize ) >> page_shift );
1522 /***********************************************************************
1523 * virtual_alloc_thread_stack
1525 NTSTATUS virtual_alloc_thread_stack( TEB *teb, SIZE_T reserve_size, SIZE_T commit_size )
1527 struct file_view *view;
1532 if (!reserve_size || !commit_size)
1534 IMAGE_NT_HEADERS *nt = RtlImageNtHeader( NtCurrentTeb()->Peb->ImageBaseAddress );
1535 if (!reserve_size) reserve_size = nt->OptionalHeader.SizeOfStackReserve;
1536 if (!commit_size) commit_size = nt->OptionalHeader.SizeOfStackCommit;
1539 size = max( reserve_size, commit_size );
1540 if (size < 1024 * 1024) size = 1024 * 1024; /* Xlib needs a large stack */
1541 size = (size + 0xffff) & ~0xffff; /* round to 64K boundary */
1543 server_enter_uninterrupted_section( &csVirtual, &sigset );
1545 if ((status = map_view( &view, NULL, size, 0xffff, 0,
1546 VPROT_READ | VPROT_WRITE | VPROT_COMMITTED | VPROT_VALLOC )) != STATUS_SUCCESS)
1549 #ifdef VALGRIND_STACK_REGISTER
1550 VALGRIND_STACK_REGISTER( view->base, (char *)view->base + view->size );
1553 /* setup no access guard page */
1554 VIRTUAL_SetProt( view, view->base, page_size, VPROT_COMMITTED );
1555 VIRTUAL_SetProt( view, (char *)view->base + page_size, page_size,
1556 VPROT_READ | VPROT_WRITE | VPROT_COMMITTED | VPROT_GUARD );
1558 /* note: limit is lower than base since the stack grows down */
1559 teb->DeallocationStack = view->base;
1560 teb->Tib.StackBase = (char *)view->base + view->size;
1561 teb->Tib.StackLimit = (char *)view->base + 2 * page_size;
1563 server_leave_uninterrupted_section( &csVirtual, &sigset );
1568 /***********************************************************************
1569 * virtual_clear_thread_stack
1571 * Clear the stack contents before calling the main entry point, some broken apps need that.
1573 void virtual_clear_thread_stack(void)
1575 void *stack = NtCurrentTeb()->Tib.StackLimit;
1576 size_t size = (char *)NtCurrentTeb()->Tib.StackBase - (char *)NtCurrentTeb()->Tib.StackLimit;
1578 wine_anon_mmap( stack, size, PROT_READ | PROT_WRITE, MAP_FIXED );
1579 if (force_exec_prot) mprotect( stack, size, PROT_READ | PROT_WRITE | PROT_EXEC );
1583 /***********************************************************************
1584 * virtual_handle_fault
1586 NTSTATUS virtual_handle_fault( LPCVOID addr, DWORD err )
1588 struct file_view *view;
1589 NTSTATUS ret = STATUS_ACCESS_VIOLATION;
1592 server_enter_uninterrupted_section( &csVirtual, &sigset );
1593 if ((view = VIRTUAL_FindView( addr, 0 )))
1595 void *page = ROUND_ADDR( addr, page_mask );
1596 BYTE *vprot = &view->prot[((const char *)page - (const char *)view->base) >> page_shift];
1597 if (*vprot & VPROT_GUARD)
1599 VIRTUAL_SetProt( view, page, page_size, *vprot & ~VPROT_GUARD );
1600 ret = STATUS_GUARD_PAGE_VIOLATION;
1602 if ((err & EXCEPTION_WRITE_FAULT) && (view->protect & VPROT_WRITEWATCH))
1604 if (*vprot & VPROT_WRITEWATCH)
1606 *vprot &= ~VPROT_WRITEWATCH;
1607 VIRTUAL_SetProt( view, page, page_size, *vprot );
1609 /* ignore fault if page is writable now */
1610 if (VIRTUAL_GetUnixProt( *vprot ) & PROT_WRITE) ret = STATUS_SUCCESS;
1613 server_leave_uninterrupted_section( &csVirtual, &sigset );
1619 /***********************************************************************
1620 * virtual_is_valid_code_address
1622 BOOL virtual_is_valid_code_address( const void *addr, SIZE_T size )
1624 struct file_view *view;
1628 server_enter_uninterrupted_section( &csVirtual, &sigset );
1629 if ((view = VIRTUAL_FindView( addr, size )))
1630 ret = !(view->protect & VPROT_SYSTEM); /* system views are not visible to the app */
1631 server_leave_uninterrupted_section( &csVirtual, &sigset );
1636 /***********************************************************************
1637 * virtual_handle_stack_fault
1639 * Handle an access fault inside the current thread stack.
1640 * Called from inside a signal handler.
1642 BOOL virtual_handle_stack_fault( void *addr )
1644 struct file_view *view;
1647 RtlEnterCriticalSection( &csVirtual ); /* no need for signal masking inside signal handler */
1648 if ((view = VIRTUAL_FindView( addr, 0 )))
1650 void *page = ROUND_ADDR( addr, page_mask );
1651 BYTE vprot = view->prot[((const char *)page - (const char *)view->base) >> page_shift];
1652 if (vprot & VPROT_GUARD)
1654 VIRTUAL_SetProt( view, page, page_size, vprot & ~VPROT_GUARD );
1655 NtCurrentTeb()->Tib.StackLimit = page;
1656 if ((char *)page >= (char *)NtCurrentTeb()->DeallocationStack + 2*page_size)
1658 vprot = view->prot[((char *)page - page_size - (char *)view->base) >> page_shift];
1659 VIRTUAL_SetProt( view, (char *)page - page_size, page_size, vprot | VPROT_GUARD );
1664 RtlLeaveCriticalSection( &csVirtual );
1669 /***********************************************************************
1670 * virtual_check_buffer_for_read
1672 * Check if a memory buffer can be read, triggering page faults if needed for DIB section access.
1674 BOOL virtual_check_buffer_for_read( const void *ptr, SIZE_T size )
1676 if (!size) return TRUE;
1677 if (!ptr) return FALSE;
1681 volatile const char *p = ptr;
1682 char dummy __attribute__((unused));
1683 SIZE_T count = size;
1685 while (count > page_size)
1692 dummy = p[count - 1];
1703 /***********************************************************************
1704 * virtual_check_buffer_for_write
1706 * Check if a memory buffer can be written to, triggering page faults if needed for write watches.
1708 BOOL virtual_check_buffer_for_write( void *ptr, SIZE_T size )
1710 if (!size) return TRUE;
1711 if (!ptr) return FALSE;
1715 volatile char *p = ptr;
1716 SIZE_T count = size;
1718 while (count > page_size)
1736 /***********************************************************************
1737 * VIRTUAL_SetForceExec
1739 * Whether to force exec prot on all views.
1741 void VIRTUAL_SetForceExec( BOOL enable )
1743 struct file_view *view;
1746 server_enter_uninterrupted_section( &csVirtual, &sigset );
1747 if (!force_exec_prot != !enable) /* change all existing views */
1749 force_exec_prot = enable;
1751 LIST_FOR_EACH_ENTRY( view, &views_list, struct file_view, entry )
1754 char *addr = view->base;
1755 BYTE commit = view->mapping ? VPROT_COMMITTED : 0; /* file mappings are always accessible */
1756 int unix_prot = VIRTUAL_GetUnixProt( view->prot[0] | commit );
1758 if (view->protect & VPROT_NOEXEC) continue;
1759 for (count = i = 1; i < view->size >> page_shift; i++, count++)
1761 int prot = VIRTUAL_GetUnixProt( view->prot[i] | commit );
1762 if (prot == unix_prot) continue;
1763 if ((unix_prot & PROT_READ) && !(unix_prot & PROT_EXEC))
1765 TRACE( "%s exec prot for %p-%p\n",
1766 force_exec_prot ? "enabling" : "disabling",
1767 addr, addr + (count << page_shift) - 1 );
1768 mprotect( addr, count << page_shift,
1769 unix_prot | (force_exec_prot ? PROT_EXEC : 0) );
1771 addr += (count << page_shift);
1777 if ((unix_prot & PROT_READ) && !(unix_prot & PROT_EXEC))
1779 TRACE( "%s exec prot for %p-%p\n",
1780 force_exec_prot ? "enabling" : "disabling",
1781 addr, addr + (count << page_shift) - 1 );
1782 mprotect( addr, count << page_shift,
1783 unix_prot | (force_exec_prot ? PROT_EXEC : 0) );
1788 server_leave_uninterrupted_section( &csVirtual, &sigset );
1797 /* free reserved areas above the limit; callback for wine_mmap_enum_reserved_areas */
1798 static int free_reserved_memory( void *base, size_t size, void *arg )
1800 struct free_range *range = arg;
1802 if ((char *)base >= range->limit) return 0;
1803 if ((char *)base + size <= range->base) return 0;
1804 if ((char *)base < range->base)
1806 size -= range->base - (char *)base;
1809 if ((char *)base + size > range->limit) size = range->limit - (char *)base;
1810 remove_reserved_area( base, size );
1811 return 1; /* stop enumeration since the list has changed */
1814 /***********************************************************************
1815 * virtual_release_address_space
1817 * Release some address space once we have loaded and initialized the app.
1819 void virtual_release_address_space( BOOL free_high_mem )
1821 struct free_range range;
1824 if (user_space_limit == address_space_limit) return; /* no need to free anything */
1826 server_enter_uninterrupted_section( &csVirtual, &sigset );
1828 /* no large address space on win9x */
1829 if (free_high_mem && NtCurrentTeb()->Peb->OSPlatformId == VER_PLATFORM_WIN32_NT)
1831 range.base = (char *)0x82000000;
1832 range.limit = address_space_limit;
1833 while (wine_mmap_enum_reserved_areas( free_reserved_memory, &range, 1 )) /* nothing */;
1834 user_space_limit = working_set_limit = address_space_limit;
1838 #ifndef __APPLE__ /* dyld doesn't support parts of the WINE_DOS segment being unmapped */
1839 range.base = (char *)0x20000000;
1840 range.limit = (char *)0x7f000000;
1841 while (wine_mmap_enum_reserved_areas( free_reserved_memory, &range, 0 )) /* nothing */;
1845 server_leave_uninterrupted_section( &csVirtual, &sigset );
1849 /***********************************************************************
1850 * NtAllocateVirtualMemory (NTDLL.@)
1851 * ZwAllocateVirtualMemory (NTDLL.@)
1853 NTSTATUS WINAPI NtAllocateVirtualMemory( HANDLE process, PVOID *ret, ULONG zero_bits,
1854 SIZE_T *size_ptr, ULONG type, ULONG protect )
1858 SIZE_T size = *size_ptr;
1859 SIZE_T mask = get_mask( zero_bits );
1860 NTSTATUS status = STATUS_SUCCESS;
1861 struct file_view *view;
1864 TRACE("%p %p %08lx %x %08x\n", process, *ret, size, type, protect );
1866 if (!size) return STATUS_INVALID_PARAMETER;
1868 if (process != NtCurrentProcess())
1871 apc_result_t result;
1873 memset( &call, 0, sizeof(call) );
1875 call.virtual_alloc.type = APC_VIRTUAL_ALLOC;
1876 call.virtual_alloc.addr = wine_server_client_ptr( *ret );
1877 call.virtual_alloc.size = *size_ptr;
1878 call.virtual_alloc.zero_bits = zero_bits;
1879 call.virtual_alloc.op_type = type;
1880 call.virtual_alloc.prot = protect;
1881 status = NTDLL_queue_process_apc( process, &call, &result );
1882 if (status != STATUS_SUCCESS) return status;
1884 if (result.virtual_alloc.status == STATUS_SUCCESS)
1886 *ret = wine_server_get_ptr( result.virtual_alloc.addr );
1887 *size_ptr = result.virtual_alloc.size;
1889 return result.virtual_alloc.status;
1892 /* Round parameters to a page boundary */
1894 if (is_beyond_limit( 0, size, working_set_limit )) return STATUS_WORKING_SET_LIMIT_RANGE;
1896 if ((status = get_vprot_flags( protect, &vprot, FALSE ))) return status;
1897 if (vprot & VPROT_WRITECOPY) return STATUS_INVALID_PAGE_PROTECTION;
1898 vprot |= VPROT_VALLOC;
1899 if (type & MEM_COMMIT) vprot |= VPROT_COMMITTED;
1903 if (type & MEM_RESERVE) /* Round down to 64k boundary */
1904 base = ROUND_ADDR( *ret, mask );
1906 base = ROUND_ADDR( *ret, page_mask );
1907 size = (((UINT_PTR)*ret + size + page_mask) & ~page_mask) - (UINT_PTR)base;
1909 /* address 1 is magic to mean DOS area */
1910 if (!base && *ret == (void *)1 && size == 0x110000)
1912 server_enter_uninterrupted_section( &csVirtual, &sigset );
1913 status = allocate_dos_memory( &view, vprot );
1914 if (status == STATUS_SUCCESS)
1917 *size_ptr = view->size;
1919 server_leave_uninterrupted_section( &csVirtual, &sigset );
1923 /* disallow low 64k, wrap-around and kernel space */
1924 if (((char *)base < (char *)0x10000) ||
1925 ((char *)base + size < (char *)base) ||
1926 is_beyond_limit( base, size, address_space_limit ))
1927 return STATUS_INVALID_PARAMETER;
1932 size = (size + page_mask) & ~page_mask;
1935 /* Compute the alloc type flags */
1937 if (!(type & (MEM_COMMIT | MEM_RESERVE | MEM_RESET)) ||
1938 (type & ~(MEM_COMMIT | MEM_RESERVE | MEM_TOP_DOWN | MEM_WRITE_WATCH | MEM_RESET)))
1940 WARN("called with wrong alloc type flags (%08x) !\n", type);
1941 return STATUS_INVALID_PARAMETER;
1944 /* Reserve the memory */
1946 if (use_locks) server_enter_uninterrupted_section( &csVirtual, &sigset );
1948 if ((type & MEM_RESERVE) || !base)
1950 if (type & MEM_WRITE_WATCH) vprot |= VPROT_WRITEWATCH;
1951 status = map_view( &view, base, size, mask, type & MEM_TOP_DOWN, vprot );
1952 if (status == STATUS_SUCCESS) base = view->base;
1954 else if (type & MEM_RESET)
1956 if (!(view = VIRTUAL_FindView( base, size ))) status = STATUS_NOT_MAPPED_VIEW;
1957 else madvise( base, size, MADV_DONTNEED );
1959 else /* commit the pages */
1961 if (!(view = VIRTUAL_FindView( base, size ))) status = STATUS_NOT_MAPPED_VIEW;
1962 else if (!VIRTUAL_SetProt( view, base, size, vprot )) status = STATUS_ACCESS_DENIED;
1963 else if (view->mapping && !(view->protect & VPROT_COMMITTED))
1965 SERVER_START_REQ( add_mapping_committed_range )
1967 req->handle = wine_server_obj_handle( view->mapping );
1968 req->offset = (char *)base - (char *)view->base;
1970 wine_server_call( req );
1976 if (use_locks) server_leave_uninterrupted_section( &csVirtual, &sigset );
1978 if (status == STATUS_SUCCESS)
1987 /***********************************************************************
1988 * NtFreeVirtualMemory (NTDLL.@)
1989 * ZwFreeVirtualMemory (NTDLL.@)
1991 NTSTATUS WINAPI NtFreeVirtualMemory( HANDLE process, PVOID *addr_ptr, SIZE_T *size_ptr, ULONG type )
1993 struct file_view *view;
1996 NTSTATUS status = STATUS_SUCCESS;
1997 LPVOID addr = *addr_ptr;
1998 SIZE_T size = *size_ptr;
2000 TRACE("%p %p %08lx %x\n", process, addr, size, type );
2002 if (process != NtCurrentProcess())
2005 apc_result_t result;
2007 memset( &call, 0, sizeof(call) );
2009 call.virtual_free.type = APC_VIRTUAL_FREE;
2010 call.virtual_free.addr = wine_server_client_ptr( addr );
2011 call.virtual_free.size = size;
2012 call.virtual_free.op_type = type;
2013 status = NTDLL_queue_process_apc( process, &call, &result );
2014 if (status != STATUS_SUCCESS) return status;
2016 if (result.virtual_free.status == STATUS_SUCCESS)
2018 *addr_ptr = wine_server_get_ptr( result.virtual_free.addr );
2019 *size_ptr = result.virtual_free.size;
2021 return result.virtual_free.status;
2024 /* Fix the parameters */
2026 size = ROUND_SIZE( addr, size );
2027 base = ROUND_ADDR( addr, page_mask );
2029 /* avoid freeing the DOS area when a broken app passes a NULL pointer */
2030 if (!base) return STATUS_INVALID_PARAMETER;
2032 server_enter_uninterrupted_section( &csVirtual, &sigset );
2034 if (!(view = VIRTUAL_FindView( base, size )) || !(view->protect & VPROT_VALLOC))
2036 status = STATUS_INVALID_PARAMETER;
2038 else if (type == MEM_RELEASE)
2040 /* Free the pages */
2042 if (size || (base != view->base)) status = STATUS_INVALID_PARAMETER;
2045 delete_view( view );
2050 else if (type == MEM_DECOMMIT)
2052 status = decommit_pages( view, base - (char *)view->base, size );
2053 if (status == STATUS_SUCCESS)
2061 WARN("called with wrong free type flags (%08x) !\n", type);
2062 status = STATUS_INVALID_PARAMETER;
2065 server_leave_uninterrupted_section( &csVirtual, &sigset );
2069 static ULONG map_protection_to_access( ULONG vprot )
2071 vprot &= VPROT_READ | VPROT_WRITE | VPROT_EXEC | VPROT_WRITECOPY;
2072 if (vprot & VPROT_EXEC)
2074 if (vprot & VPROT_WRITE) vprot |= VPROT_WRITECOPY;
2076 else vprot &= ~VPROT_WRITECOPY;
2080 static BOOL is_compatible_protection( const struct file_view *view, ULONG new_prot )
2082 ULONG view_prot, map_prot;
2084 view_prot = map_protection_to_access( view->protect );
2085 new_prot = map_protection_to_access( new_prot );
2087 if (view_prot == new_prot) return TRUE;
2088 if (!view_prot) return FALSE;
2090 if ((view_prot & new_prot) != new_prot) return FALSE;
2092 map_prot = map_protection_to_access( view->map_protect );
2093 if ((map_prot & new_prot) == new_prot) return TRUE;
2098 /***********************************************************************
2099 * NtProtectVirtualMemory (NTDLL.@)
2100 * ZwProtectVirtualMemory (NTDLL.@)
2102 NTSTATUS WINAPI NtProtectVirtualMemory( HANDLE process, PVOID *addr_ptr, SIZE_T *size_ptr,
2103 ULONG new_prot, ULONG *old_prot )
2105 struct file_view *view;
2107 NTSTATUS status = STATUS_SUCCESS;
2110 unsigned int new_vprot;
2111 SIZE_T size = *size_ptr;
2112 LPVOID addr = *addr_ptr;
2114 TRACE("%p %p %08lx %08x\n", process, addr, size, new_prot );
2116 if (process != NtCurrentProcess())
2119 apc_result_t result;
2121 memset( &call, 0, sizeof(call) );
2123 call.virtual_protect.type = APC_VIRTUAL_PROTECT;
2124 call.virtual_protect.addr = wine_server_client_ptr( addr );
2125 call.virtual_protect.size = size;
2126 call.virtual_protect.prot = new_prot;
2127 status = NTDLL_queue_process_apc( process, &call, &result );
2128 if (status != STATUS_SUCCESS) return status;
2130 if (result.virtual_protect.status == STATUS_SUCCESS)
2132 *addr_ptr = wine_server_get_ptr( result.virtual_protect.addr );
2133 *size_ptr = result.virtual_protect.size;
2134 if (old_prot) *old_prot = result.virtual_protect.prot;
2136 return result.virtual_protect.status;
2139 /* Fix the parameters */
2141 size = ROUND_SIZE( addr, size );
2142 base = ROUND_ADDR( addr, page_mask );
2144 server_enter_uninterrupted_section( &csVirtual, &sigset );
2146 if ((view = VIRTUAL_FindView( base, size )))
2148 /* Make sure all the pages are committed */
2149 if (get_committed_size( view, base, &vprot ) >= size && (vprot & VPROT_COMMITTED))
2151 if (!(status = get_vprot_flags( new_prot, &new_vprot, view->protect & VPROT_IMAGE )))
2153 if ((new_vprot & VPROT_WRITECOPY) && (view->protect & VPROT_VALLOC))
2154 status = STATUS_INVALID_PAGE_PROTECTION;
2157 if (!view->mapping || is_compatible_protection( view, new_vprot ))
2159 new_vprot |= VPROT_COMMITTED;
2160 if (old_prot) *old_prot = VIRTUAL_GetWin32Prot( vprot );
2161 if (!VIRTUAL_SetProt( view, base, size, new_vprot )) status = STATUS_ACCESS_DENIED;
2163 else status = STATUS_INVALID_PAGE_PROTECTION;
2167 else status = STATUS_NOT_COMMITTED;
2169 else status = STATUS_INVALID_PARAMETER;
2171 server_leave_uninterrupted_section( &csVirtual, &sigset );
2173 if (status == STATUS_SUCCESS)
2182 /* retrieve state for a free memory area; callback for wine_mmap_enum_reserved_areas */
2183 static int get_free_mem_state_callback( void *start, size_t size, void *arg )
2185 MEMORY_BASIC_INFORMATION *info = arg;
2186 void *end = (char *)start + size;
2188 if ((char *)info->BaseAddress + info->RegionSize < (char *)start) return 0;
2190 if (info->BaseAddress >= end)
2192 if (info->AllocationBase < end) info->AllocationBase = end;
2196 if (info->BaseAddress >= start || start <= address_space_start)
2198 /* it's a real free area */
2199 info->State = MEM_FREE;
2200 info->Protect = PAGE_NOACCESS;
2201 info->AllocationBase = 0;
2202 info->AllocationProtect = 0;
2204 if ((char *)info->BaseAddress + info->RegionSize > (char *)end)
2205 info->RegionSize = (char *)end - (char *)info->BaseAddress;
2207 else /* outside of the reserved area, pretend it's allocated */
2209 info->RegionSize = (char *)start - (char *)info->BaseAddress;
2210 info->State = MEM_RESERVE;
2211 info->Protect = PAGE_NOACCESS;
2212 info->AllocationProtect = PAGE_NOACCESS;
2213 info->Type = MEM_PRIVATE;
2218 #define UNIMPLEMENTED_INFO_CLASS(c) \
2220 FIXME("(process=%p,addr=%p) Unimplemented information class: " #c "\n", process, addr); \
2221 return STATUS_INVALID_INFO_CLASS
2223 /***********************************************************************
2224 * NtQueryVirtualMemory (NTDLL.@)
2225 * ZwQueryVirtualMemory (NTDLL.@)
2227 NTSTATUS WINAPI NtQueryVirtualMemory( HANDLE process, LPCVOID addr,
2228 MEMORY_INFORMATION_CLASS info_class, PVOID buffer,
2229 SIZE_T len, SIZE_T *res_len )
2231 struct file_view *view;
2232 char *base, *alloc_base = 0;
2235 MEMORY_BASIC_INFORMATION *info = buffer;
2238 if (info_class != MemoryBasicInformation)
2242 UNIMPLEMENTED_INFO_CLASS(MemoryWorkingSetList);
2243 UNIMPLEMENTED_INFO_CLASS(MemorySectionName);
2244 UNIMPLEMENTED_INFO_CLASS(MemoryBasicVlmInformation);
2247 FIXME("(%p,%p,info_class=%d,%p,%ld,%p) Unknown information class\n",
2248 process, addr, info_class, buffer, len, res_len);
2249 return STATUS_INVALID_INFO_CLASS;
2253 if (process != NtCurrentProcess())
2257 apc_result_t result;
2259 memset( &call, 0, sizeof(call) );
2261 call.virtual_query.type = APC_VIRTUAL_QUERY;
2262 call.virtual_query.addr = wine_server_client_ptr( addr );
2263 status = NTDLL_queue_process_apc( process, &call, &result );
2264 if (status != STATUS_SUCCESS) return status;
2266 if (result.virtual_query.status == STATUS_SUCCESS)
2268 info->BaseAddress = wine_server_get_ptr( result.virtual_query.base );
2269 info->AllocationBase = wine_server_get_ptr( result.virtual_query.alloc_base );
2270 info->RegionSize = result.virtual_query.size;
2271 info->Protect = result.virtual_query.prot;
2272 info->AllocationProtect = result.virtual_query.alloc_prot;
2273 info->State = (DWORD)result.virtual_query.state << 12;
2274 info->Type = (DWORD)result.virtual_query.alloc_type << 16;
2275 if (info->RegionSize != result.virtual_query.size) /* truncated */
2276 return STATUS_INVALID_PARAMETER; /* FIXME */
2277 if (res_len) *res_len = sizeof(*info);
2279 return result.virtual_query.status;
2282 base = ROUND_ADDR( addr, page_mask );
2284 if (is_beyond_limit( base, 1, working_set_limit )) return STATUS_WORKING_SET_LIMIT_RANGE;
2286 /* Find the view containing the address */
2288 server_enter_uninterrupted_section( &csVirtual, &sigset );
2289 ptr = list_head( &views_list );
2294 size = (char *)working_set_limit - alloc_base;
2298 view = LIST_ENTRY( ptr, struct file_view, entry );
2299 if ((char *)view->base > base)
2301 size = (char *)view->base - alloc_base;
2305 if ((char *)view->base + view->size > base)
2307 alloc_base = view->base;
2311 alloc_base = (char *)view->base + view->size;
2312 ptr = list_next( &views_list, ptr );
2315 /* Fill the info structure */
2317 info->AllocationBase = alloc_base;
2318 info->BaseAddress = base;
2319 info->RegionSize = size - (base - alloc_base);
2323 if (!wine_mmap_enum_reserved_areas( get_free_mem_state_callback, info, 0 ))
2325 /* not in a reserved area at all, pretend it's allocated */
2327 if (base >= (char *)address_space_start)
2329 info->State = MEM_RESERVE;
2330 info->Protect = PAGE_NOACCESS;
2331 info->AllocationProtect = PAGE_NOACCESS;
2332 info->Type = MEM_PRIVATE;
2337 info->State = MEM_FREE;
2338 info->Protect = PAGE_NOACCESS;
2339 info->AllocationBase = 0;
2340 info->AllocationProtect = 0;
2348 SIZE_T range_size = get_committed_size( view, base, &vprot );
2350 info->State = (vprot & VPROT_COMMITTED) ? MEM_COMMIT : MEM_RESERVE;
2351 info->Protect = (vprot & VPROT_COMMITTED) ? VIRTUAL_GetWin32Prot( vprot ) : 0;
2352 info->AllocationBase = alloc_base;
2353 info->AllocationProtect = VIRTUAL_GetWin32Prot( view->protect );
2354 if (view->protect & VPROT_IMAGE) info->Type = MEM_IMAGE;
2355 else if (view->protect & VPROT_VALLOC) info->Type = MEM_PRIVATE;
2356 else info->Type = MEM_MAPPED;
2357 for (size = base - alloc_base; size < base + range_size - alloc_base; size += page_size)
2358 if ((view->prot[size >> page_shift] ^ vprot) & ~VPROT_WRITEWATCH) break;
2359 info->RegionSize = size - (base - alloc_base);
2361 server_leave_uninterrupted_section( &csVirtual, &sigset );
2363 if (res_len) *res_len = sizeof(*info);
2364 return STATUS_SUCCESS;
2368 /***********************************************************************
2369 * NtLockVirtualMemory (NTDLL.@)
2370 * ZwLockVirtualMemory (NTDLL.@)
2372 NTSTATUS WINAPI NtLockVirtualMemory( HANDLE process, PVOID *addr, SIZE_T *size, ULONG unknown )
2374 NTSTATUS status = STATUS_SUCCESS;
2376 if (process != NtCurrentProcess())
2379 apc_result_t result;
2381 memset( &call, 0, sizeof(call) );
2383 call.virtual_lock.type = APC_VIRTUAL_LOCK;
2384 call.virtual_lock.addr = wine_server_client_ptr( *addr );
2385 call.virtual_lock.size = *size;
2386 status = NTDLL_queue_process_apc( process, &call, &result );
2387 if (status != STATUS_SUCCESS) return status;
2389 if (result.virtual_lock.status == STATUS_SUCCESS)
2391 *addr = wine_server_get_ptr( result.virtual_lock.addr );
2392 *size = result.virtual_lock.size;
2394 return result.virtual_lock.status;
2397 *size = ROUND_SIZE( *addr, *size );
2398 *addr = ROUND_ADDR( *addr, page_mask );
2400 if (mlock( *addr, *size )) status = STATUS_ACCESS_DENIED;
2405 /***********************************************************************
2406 * NtUnlockVirtualMemory (NTDLL.@)
2407 * ZwUnlockVirtualMemory (NTDLL.@)
2409 NTSTATUS WINAPI NtUnlockVirtualMemory( HANDLE process, PVOID *addr, SIZE_T *size, ULONG unknown )
2411 NTSTATUS status = STATUS_SUCCESS;
2413 if (process != NtCurrentProcess())
2416 apc_result_t result;
2418 memset( &call, 0, sizeof(call) );
2420 call.virtual_unlock.type = APC_VIRTUAL_UNLOCK;
2421 call.virtual_unlock.addr = wine_server_client_ptr( *addr );
2422 call.virtual_unlock.size = *size;
2423 status = NTDLL_queue_process_apc( process, &call, &result );
2424 if (status != STATUS_SUCCESS) return status;
2426 if (result.virtual_unlock.status == STATUS_SUCCESS)
2428 *addr = wine_server_get_ptr( result.virtual_unlock.addr );
2429 *size = result.virtual_unlock.size;
2431 return result.virtual_unlock.status;
2434 *size = ROUND_SIZE( *addr, *size );
2435 *addr = ROUND_ADDR( *addr, page_mask );
2437 if (munlock( *addr, *size )) status = STATUS_ACCESS_DENIED;
2442 /***********************************************************************
2443 * NtCreateSection (NTDLL.@)
2444 * ZwCreateSection (NTDLL.@)
2446 NTSTATUS WINAPI NtCreateSection( HANDLE *handle, ACCESS_MASK access, const OBJECT_ATTRIBUTES *attr,
2447 const LARGE_INTEGER *size, ULONG protect,
2448 ULONG sec_flags, HANDLE file )
2452 DWORD len = (attr && attr->ObjectName) ? attr->ObjectName->Length : 0;
2453 struct security_descriptor *sd = NULL;
2454 struct object_attributes objattr;
2456 /* Check parameters */
2458 if (len > MAX_PATH*sizeof(WCHAR)) return STATUS_NAME_TOO_LONG;
2460 if ((ret = get_vprot_flags( protect, &vprot, sec_flags & SEC_IMAGE ))) return ret;
2462 objattr.rootdir = wine_server_obj_handle( attr ? attr->RootDirectory : 0 );
2464 objattr.name_len = len;
2467 ret = NTDLL_create_struct_sd( attr->SecurityDescriptor, &sd, &objattr.sd_len );
2468 if (ret != STATUS_SUCCESS) return ret;
2471 if (!(sec_flags & SEC_RESERVE)) vprot |= VPROT_COMMITTED;
2472 if (sec_flags & SEC_NOCACHE) vprot |= VPROT_NOCACHE;
2473 if (sec_flags & SEC_IMAGE) vprot |= VPROT_IMAGE;
2475 /* Create the server object */
2477 SERVER_START_REQ( create_mapping )
2479 req->access = access;
2480 req->attributes = (attr) ? attr->Attributes : 0;
2481 req->file_handle = wine_server_obj_handle( file );
2482 req->size = size ? size->QuadPart : 0;
2483 req->protect = vprot;
2484 wine_server_add_data( req, &objattr, sizeof(objattr) );
2485 if (objattr.sd_len) wine_server_add_data( req, sd, objattr.sd_len );
2486 if (len) wine_server_add_data( req, attr->ObjectName->Buffer, len );
2487 ret = wine_server_call( req );
2488 *handle = wine_server_ptr_handle( reply->handle );
2492 NTDLL_free_struct_sd( sd );
2498 /***********************************************************************
2499 * NtOpenSection (NTDLL.@)
2500 * ZwOpenSection (NTDLL.@)
2502 NTSTATUS WINAPI NtOpenSection( HANDLE *handle, ACCESS_MASK access, const OBJECT_ATTRIBUTES *attr )
2505 DWORD len = attr->ObjectName->Length;
2507 if (len > MAX_PATH*sizeof(WCHAR)) return STATUS_NAME_TOO_LONG;
2509 SERVER_START_REQ( open_mapping )
2511 req->access = access;
2512 req->attributes = attr->Attributes;
2513 req->rootdir = wine_server_obj_handle( attr->RootDirectory );
2514 wine_server_add_data( req, attr->ObjectName->Buffer, len );
2515 if (!(ret = wine_server_call( req ))) *handle = wine_server_ptr_handle( reply->handle );
2522 /***********************************************************************
2523 * NtMapViewOfSection (NTDLL.@)
2524 * ZwMapViewOfSection (NTDLL.@)
2526 NTSTATUS WINAPI NtMapViewOfSection( HANDLE handle, HANDLE process, PVOID *addr_ptr, ULONG zero_bits,
2527 SIZE_T commit_size, const LARGE_INTEGER *offset_ptr, SIZE_T *size_ptr,
2528 SECTION_INHERIT inherit, ULONG alloc_type, ULONG protect )
2531 mem_size_t full_size;
2533 SIZE_T size, mask = get_mask( zero_bits );
2534 int unix_handle = -1, needs_close;
2535 unsigned int map_vprot, vprot;
2537 struct file_view *view;
2539 HANDLE dup_mapping, shared_file;
2540 LARGE_INTEGER offset;
2543 offset.QuadPart = offset_ptr ? offset_ptr->QuadPart : 0;
2545 TRACE("handle=%p process=%p addr=%p off=%x%08x size=%lx access=%x\n",
2546 handle, process, *addr_ptr, offset.u.HighPart, offset.u.LowPart, *size_ptr, protect );
2548 /* Check parameters */
2550 if ((offset.u.LowPart & mask) || (*addr_ptr && ((UINT_PTR)*addr_ptr & mask)))
2551 return STATUS_INVALID_PARAMETER;
2556 access = SECTION_MAP_READ;
2558 case PAGE_READWRITE:
2559 case PAGE_EXECUTE_READWRITE:
2560 access = SECTION_MAP_WRITE;
2563 case PAGE_WRITECOPY:
2565 case PAGE_EXECUTE_READ:
2566 case PAGE_EXECUTE_WRITECOPY:
2567 access = SECTION_MAP_READ;
2570 return STATUS_INVALID_PAGE_PROTECTION;
2573 if (process != NtCurrentProcess())
2576 apc_result_t result;
2578 memset( &call, 0, sizeof(call) );
2580 call.map_view.type = APC_MAP_VIEW;
2581 call.map_view.handle = wine_server_obj_handle( handle );
2582 call.map_view.addr = wine_server_client_ptr( *addr_ptr );
2583 call.map_view.size = *size_ptr;
2584 call.map_view.offset = offset.QuadPart;
2585 call.map_view.zero_bits = zero_bits;
2586 call.map_view.alloc_type = alloc_type;
2587 call.map_view.prot = protect;
2588 res = NTDLL_queue_process_apc( process, &call, &result );
2589 if (res != STATUS_SUCCESS) return res;
2591 if ((NTSTATUS)result.map_view.status >= 0)
2593 *addr_ptr = wine_server_get_ptr( result.map_view.addr );
2594 *size_ptr = result.map_view.size;
2596 return result.map_view.status;
2599 SERVER_START_REQ( get_mapping_info )
2601 req->handle = wine_server_obj_handle( handle );
2602 req->access = access;
2603 res = wine_server_call( req );
2604 map_vprot = reply->protect;
2605 base = wine_server_get_ptr( reply->base );
2606 full_size = reply->size;
2607 header_size = reply->header_size;
2608 dup_mapping = wine_server_ptr_handle( reply->mapping );
2609 shared_file = wine_server_ptr_handle( reply->shared_file );
2610 if ((ULONG_PTR)base != reply->base) base = NULL;
2613 if (res) return res;
2615 if ((res = server_get_unix_fd( handle, 0, &unix_handle, &needs_close, NULL, NULL ))) goto done;
2617 if (map_vprot & VPROT_IMAGE)
2620 if (size != full_size) /* truncated */
2622 WARN( "Modules larger than 4Gb (%s) not supported\n", wine_dbgstr_longlong(full_size) );
2623 res = STATUS_INVALID_PARAMETER;
2628 int shared_fd, shared_needs_close;
2630 if ((res = server_get_unix_fd( shared_file, FILE_READ_DATA|FILE_WRITE_DATA,
2631 &shared_fd, &shared_needs_close, NULL, NULL ))) goto done;
2632 res = map_image( handle, unix_handle, base, size, mask, header_size,
2633 shared_fd, dup_mapping, map_vprot, addr_ptr );
2634 if (shared_needs_close) close( shared_fd );
2635 NtClose( shared_file );
2639 res = map_image( handle, unix_handle, base, size, mask, header_size,
2640 -1, dup_mapping, map_vprot, addr_ptr );
2642 if (needs_close) close( unix_handle );
2643 if (res >= 0) *size_ptr = size;
2647 res = STATUS_INVALID_PARAMETER;
2648 if (offset.QuadPart >= full_size) goto done;
2651 if (*size_ptr > full_size - offset.QuadPart) goto done;
2652 size = ROUND_SIZE( offset.u.LowPart, *size_ptr );
2653 if (size < *size_ptr) goto done; /* wrap-around */
2657 size = full_size - offset.QuadPart;
2658 if (size != full_size - offset.QuadPart) /* truncated */
2660 WARN( "Files larger than 4Gb (%s) not supported on this platform\n",
2661 wine_dbgstr_longlong(full_size) );
2666 /* Reserve a properly aligned area */
2668 server_enter_uninterrupted_section( &csVirtual, &sigset );
2670 get_vprot_flags( protect, &vprot, map_vprot & VPROT_IMAGE );
2671 vprot |= (map_vprot & VPROT_COMMITTED);
2672 res = map_view( &view, *addr_ptr, size, mask, FALSE, vprot );
2675 server_leave_uninterrupted_section( &csVirtual, &sigset );
2681 TRACE("handle=%p size=%lx offset=%x%08x\n",
2682 handle, size, offset.u.HighPart, offset.u.LowPart );
2684 res = map_file_into_view( view, unix_handle, 0, size, offset.QuadPart, vprot, !dup_mapping );
2685 if (res == STATUS_SUCCESS)
2687 *addr_ptr = view->base;
2689 view->mapping = dup_mapping;
2690 view->map_protect = map_vprot;
2691 dup_mapping = 0; /* don't close it */
2695 ERR( "map_file_into_view %p %lx %x%08x failed\n",
2696 view->base, size, offset.u.HighPart, offset.u.LowPart );
2697 delete_view( view );
2700 server_leave_uninterrupted_section( &csVirtual, &sigset );
2703 if (dup_mapping) NtClose( dup_mapping );
2704 if (needs_close) close( unix_handle );
2709 /***********************************************************************
2710 * NtUnmapViewOfSection (NTDLL.@)
2711 * ZwUnmapViewOfSection (NTDLL.@)
2713 NTSTATUS WINAPI NtUnmapViewOfSection( HANDLE process, PVOID addr )
2715 struct file_view *view;
2716 NTSTATUS status = STATUS_NOT_MAPPED_VIEW;
2718 void *base = ROUND_ADDR( addr, page_mask );
2720 if (process != NtCurrentProcess())
2723 apc_result_t result;
2725 memset( &call, 0, sizeof(call) );
2727 call.unmap_view.type = APC_UNMAP_VIEW;
2728 call.unmap_view.addr = wine_server_client_ptr( addr );
2729 status = NTDLL_queue_process_apc( process, &call, &result );
2730 if (status == STATUS_SUCCESS) status = result.unmap_view.status;
2734 server_enter_uninterrupted_section( &csVirtual, &sigset );
2735 if ((view = VIRTUAL_FindView( base, 0 )) && (base == view->base) && !(view->protect & VPROT_VALLOC))
2737 delete_view( view );
2738 status = STATUS_SUCCESS;
2740 server_leave_uninterrupted_section( &csVirtual, &sigset );
2745 /***********************************************************************
2746 * NtFlushVirtualMemory (NTDLL.@)
2747 * ZwFlushVirtualMemory (NTDLL.@)
2749 NTSTATUS WINAPI NtFlushVirtualMemory( HANDLE process, LPCVOID *addr_ptr,
2750 SIZE_T *size_ptr, ULONG unknown )
2752 struct file_view *view;
2753 NTSTATUS status = STATUS_SUCCESS;
2755 void *addr = ROUND_ADDR( *addr_ptr, page_mask );
2757 if (process != NtCurrentProcess())
2760 apc_result_t result;
2762 memset( &call, 0, sizeof(call) );
2764 call.virtual_flush.type = APC_VIRTUAL_FLUSH;
2765 call.virtual_flush.addr = wine_server_client_ptr( addr );
2766 call.virtual_flush.size = *size_ptr;
2767 status = NTDLL_queue_process_apc( process, &call, &result );
2768 if (status != STATUS_SUCCESS) return status;
2770 if (result.virtual_flush.status == STATUS_SUCCESS)
2772 *addr_ptr = wine_server_get_ptr( result.virtual_flush.addr );
2773 *size_ptr = result.virtual_flush.size;
2775 return result.virtual_flush.status;
2778 server_enter_uninterrupted_section( &csVirtual, &sigset );
2779 if (!(view = VIRTUAL_FindView( addr, *size_ptr ))) status = STATUS_INVALID_PARAMETER;
2782 if (!*size_ptr) *size_ptr = view->size;
2784 if (msync( addr, *size_ptr, MS_SYNC )) status = STATUS_NOT_MAPPED_DATA;
2786 server_leave_uninterrupted_section( &csVirtual, &sigset );
2791 /***********************************************************************
2792 * NtGetWriteWatch (NTDLL.@)
2793 * ZwGetWriteWatch (NTDLL.@)
2795 NTSTATUS WINAPI NtGetWriteWatch( HANDLE process, ULONG flags, PVOID base, SIZE_T size, PVOID *addresses,
2796 ULONG_PTR *count, ULONG *granularity )
2798 struct file_view *view;
2799 NTSTATUS status = STATUS_SUCCESS;
2802 size = ROUND_SIZE( base, size );
2803 base = ROUND_ADDR( base, page_mask );
2805 if (!count || !granularity) return STATUS_ACCESS_VIOLATION;
2806 if (!*count || !size) return STATUS_INVALID_PARAMETER;
2807 if (flags & ~WRITE_WATCH_FLAG_RESET) return STATUS_INVALID_PARAMETER;
2809 if (!addresses) return STATUS_ACCESS_VIOLATION;
2811 TRACE( "%p %x %p-%p %p %lu\n", process, flags, base, (char *)base + size,
2812 addresses, *count );
2814 server_enter_uninterrupted_section( &csVirtual, &sigset );
2816 if ((view = VIRTUAL_FindView( base, size )) && (view->protect & VPROT_WRITEWATCH))
2820 char *end = addr + size;
2822 while (pos < *count && addr < end)
2824 BYTE prot = view->prot[(addr - (char *)view->base) >> page_shift];
2825 if (!(prot & VPROT_WRITEWATCH)) addresses[pos++] = addr;
2828 if (flags & WRITE_WATCH_FLAG_RESET) reset_write_watches( view, base, addr - (char *)base );
2830 *granularity = page_size;
2832 else status = STATUS_INVALID_PARAMETER;
2834 server_leave_uninterrupted_section( &csVirtual, &sigset );
2839 /***********************************************************************
2840 * NtResetWriteWatch (NTDLL.@)
2841 * ZwResetWriteWatch (NTDLL.@)
2843 NTSTATUS WINAPI NtResetWriteWatch( HANDLE process, PVOID base, SIZE_T size )
2845 struct file_view *view;
2846 NTSTATUS status = STATUS_SUCCESS;
2849 size = ROUND_SIZE( base, size );
2850 base = ROUND_ADDR( base, page_mask );
2852 TRACE( "%p %p-%p\n", process, base, (char *)base + size );
2854 if (!size) return STATUS_INVALID_PARAMETER;
2856 server_enter_uninterrupted_section( &csVirtual, &sigset );
2858 if ((view = VIRTUAL_FindView( base, size )) && (view->protect & VPROT_WRITEWATCH))
2859 reset_write_watches( view, base, size );
2861 status = STATUS_INVALID_PARAMETER;
2863 server_leave_uninterrupted_section( &csVirtual, &sigset );
2868 /***********************************************************************
2869 * NtReadVirtualMemory (NTDLL.@)
2870 * ZwReadVirtualMemory (NTDLL.@)
2872 NTSTATUS WINAPI NtReadVirtualMemory( HANDLE process, const void *addr, void *buffer,
2873 SIZE_T size, SIZE_T *bytes_read )
2877 if (virtual_check_buffer_for_write( buffer, size ))
2879 SERVER_START_REQ( read_process_memory )
2881 req->handle = wine_server_obj_handle( process );
2882 req->addr = wine_server_client_ptr( addr );
2883 wine_server_set_reply( req, buffer, size );
2884 if ((status = wine_server_call( req ))) size = 0;
2890 status = STATUS_ACCESS_VIOLATION;
2893 if (bytes_read) *bytes_read = size;
2898 /***********************************************************************
2899 * NtWriteVirtualMemory (NTDLL.@)
2900 * ZwWriteVirtualMemory (NTDLL.@)
2902 NTSTATUS WINAPI NtWriteVirtualMemory( HANDLE process, void *addr, const void *buffer,
2903 SIZE_T size, SIZE_T *bytes_written )
2907 if (virtual_check_buffer_for_read( buffer, size ))
2909 SERVER_START_REQ( write_process_memory )
2911 req->handle = wine_server_obj_handle( process );
2912 req->addr = wine_server_client_ptr( addr );
2913 wine_server_add_data( req, buffer, size );
2914 if ((status = wine_server_call( req ))) size = 0;
2920 status = STATUS_PARTIAL_COPY;
2923 if (bytes_written) *bytes_written = size;
2928 /***********************************************************************
2929 * NtAreMappedFilesTheSame (NTDLL.@)
2930 * ZwAreMappedFilesTheSame (NTDLL.@)
2932 NTSTATUS WINAPI NtAreMappedFilesTheSame(PVOID addr1, PVOID addr2)
2934 struct file_view *view1, *view2;
2935 struct stat st1, st2;
2939 TRACE("%p %p\n", addr1, addr2);
2941 server_enter_uninterrupted_section( &csVirtual, &sigset );
2943 view1 = VIRTUAL_FindView( addr1, 0 );
2944 view2 = VIRTUAL_FindView( addr2, 0 );
2946 if (!view1 || !view2)
2947 status = STATUS_INVALID_ADDRESS;
2948 else if ((view1->protect & VPROT_VALLOC) || (view2->protect & VPROT_VALLOC))
2949 status = STATUS_CONFLICTING_ADDRESSES;
2950 else if (!(view1->protect & VPROT_IMAGE) || !(view2->protect & VPROT_IMAGE))
2951 status = STATUS_NOT_SAME_DEVICE;
2952 else if (view1 == view2)
2953 status = STATUS_SUCCESS;
2954 else if (!stat_mapping_file( view1, &st1 ) && !stat_mapping_file( view2, &st2 ) &&
2955 st1.st_dev == st2.st_dev && st1.st_ino == st2.st_ino)
2956 status = STATUS_SUCCESS;
2958 status = STATUS_NOT_SAME_DEVICE;
2960 server_leave_uninterrupted_section( &csVirtual, &sigset );