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"
26 #ifdef HAVE_SYS_ERRNO_H
27 #include <sys/errno.h>
37 #include <sys/types.h>
38 #ifdef HAVE_SYS_STAT_H
39 # include <sys/stat.h>
41 #ifdef HAVE_SYS_MMAN_H
42 # include <sys/mman.h>
44 #ifdef HAVE_VALGRIND_VALGRIND_H
45 # include <valgrind/valgrind.h>
48 #define NONAMELESSUNION
49 #define NONAMELESSSTRUCT
51 #define WIN32_NO_STATUS
54 #include "wine/library.h"
55 #include "wine/server.h"
56 #include "wine/exception.h"
57 #include "wine/list.h"
58 #include "wine/debug.h"
59 #include "ntdll_misc.h"
61 WINE_DEFAULT_DEBUG_CHANNEL(virtual);
62 WINE_DECLARE_DEBUG_CHANNEL(module);
69 #define MAP_NORESERVE 0
73 typedef struct file_view
75 struct list entry; /* Entry in global view list */
76 void *base; /* Base address */
77 size_t size; /* Size in bytes */
78 HANDLE mapping; /* Handle to the file mapping */
79 unsigned int protect; /* Protection for all pages at allocation time */
80 BYTE prot[1]; /* Protection byte for each page */
84 /* Conversion from VPROT_* to Win32 flags */
85 static const BYTE VIRTUAL_Win32Flags[16] =
87 PAGE_NOACCESS, /* 0 */
88 PAGE_READONLY, /* READ */
89 PAGE_READWRITE, /* WRITE */
90 PAGE_READWRITE, /* READ | WRITE */
91 PAGE_EXECUTE, /* EXEC */
92 PAGE_EXECUTE_READ, /* READ | EXEC */
93 PAGE_EXECUTE_READWRITE, /* WRITE | EXEC */
94 PAGE_EXECUTE_READWRITE, /* READ | WRITE | EXEC */
95 PAGE_WRITECOPY, /* WRITECOPY */
96 PAGE_WRITECOPY, /* READ | WRITECOPY */
97 PAGE_WRITECOPY, /* WRITE | WRITECOPY */
98 PAGE_WRITECOPY, /* READ | WRITE | WRITECOPY */
99 PAGE_EXECUTE_WRITECOPY, /* EXEC | WRITECOPY */
100 PAGE_EXECUTE_WRITECOPY, /* READ | EXEC | WRITECOPY */
101 PAGE_EXECUTE_WRITECOPY, /* WRITE | EXEC | WRITECOPY */
102 PAGE_EXECUTE_WRITECOPY /* READ | WRITE | EXEC | WRITECOPY */
105 static struct list views_list = LIST_INIT(views_list);
107 static RTL_CRITICAL_SECTION csVirtual;
108 static RTL_CRITICAL_SECTION_DEBUG critsect_debug =
111 { &critsect_debug.ProcessLocksList, &critsect_debug.ProcessLocksList },
112 0, 0, { (DWORD_PTR)(__FILE__ ": csVirtual") }
114 static RTL_CRITICAL_SECTION csVirtual = { &critsect_debug, -1, 0, 0, 0, 0 };
117 /* These are always the same on an i386, and it will be faster this way */
118 # define page_mask 0xfff
119 # define page_shift 12
120 # define page_size 0x1000
121 /* Note: these are Windows limits, you cannot change them. */
122 static void *address_space_limit = (void *)0xc0000000; /* top of the total available address space */
123 static void *user_space_limit = (void *)0x7fff0000; /* top of the user address space */
124 static void *working_set_limit = (void *)0x7fff0000; /* top of the current working set */
126 static UINT page_shift;
127 static UINT_PTR page_size;
128 static UINT_PTR page_mask;
129 static void *address_space_limit;
130 static void *user_space_limit;
131 static void *working_set_limit;
132 #endif /* __i386__ */
134 #define ROUND_ADDR(addr,mask) \
135 ((void *)((UINT_PTR)(addr) & ~(UINT_PTR)(mask)))
137 #define ROUND_SIZE(addr,size) \
138 (((SIZE_T)(size) + ((UINT_PTR)(addr) & page_mask) + page_mask) & ~page_mask)
140 #define VIRTUAL_DEBUG_DUMP_VIEW(view) \
141 do { if (TRACE_ON(virtual)) VIRTUAL_DumpView(view); } while (0)
143 #define VIRTUAL_HEAP_SIZE (4*1024*1024)
145 static HANDLE virtual_heap;
146 static void *preload_reserve_start;
147 static void *preload_reserve_end;
148 static int use_locks;
149 static int force_exec_prot; /* whether to force PROT_EXEC on all PROT_READ mmaps */
152 /***********************************************************************
155 static const char *VIRTUAL_GetProtStr( BYTE prot )
157 static char buffer[6];
158 buffer[0] = (prot & VPROT_COMMITTED) ? 'c' : '-';
159 buffer[1] = (prot & VPROT_GUARD) ? 'g' : '-';
160 buffer[2] = (prot & VPROT_READ) ? 'r' : '-';
161 buffer[3] = (prot & VPROT_WRITECOPY) ? 'W' : ((prot & VPROT_WRITE) ? 'w' : '-');
162 buffer[4] = (prot & VPROT_EXEC) ? 'x' : '-';
168 /***********************************************************************
169 * VIRTUAL_GetUnixProt
171 * Convert page protections to protection for mmap/mprotect.
173 static int VIRTUAL_GetUnixProt( BYTE vprot )
176 if ((vprot & VPROT_COMMITTED) && !(vprot & VPROT_GUARD))
178 if (vprot & VPROT_READ) prot |= PROT_READ;
179 if (vprot & VPROT_WRITE) prot |= PROT_WRITE;
180 if (vprot & VPROT_WRITECOPY) prot |= PROT_WRITE;
181 if (vprot & VPROT_EXEC) prot |= PROT_EXEC;
182 if (vprot & VPROT_WRITEWATCH) prot &= ~PROT_WRITE;
184 if (!prot) prot = PROT_NONE;
189 /***********************************************************************
192 static void VIRTUAL_DumpView( FILE_VIEW *view )
195 char *addr = view->base;
196 BYTE prot = view->prot[0];
198 TRACE( "View: %p - %p", addr, addr + view->size - 1 );
199 if (view->protect & VPROT_SYSTEM)
200 TRACE( " (system)\n" );
201 else if (view->protect & VPROT_VALLOC)
202 TRACE( " (valloc)\n" );
203 else if (view->mapping)
204 TRACE( " %p\n", view->mapping );
206 TRACE( " (anonymous)\n");
208 for (count = i = 1; i < view->size >> page_shift; i++, count++)
210 if (view->prot[i] == prot) continue;
211 TRACE( " %p - %p %s\n",
212 addr, addr + (count << page_shift) - 1, VIRTUAL_GetProtStr(prot) );
213 addr += (count << page_shift);
214 prot = view->prot[i];
218 TRACE( " %p - %p %s\n",
219 addr, addr + (count << page_shift) - 1, VIRTUAL_GetProtStr(prot) );
223 /***********************************************************************
227 static void VIRTUAL_Dump(void)
230 struct file_view *view;
232 TRACE( "Dump of all virtual memory views:\n" );
233 server_enter_uninterrupted_section( &csVirtual, &sigset );
234 LIST_FOR_EACH_ENTRY( view, &views_list, FILE_VIEW, entry )
236 VIRTUAL_DumpView( view );
238 server_leave_uninterrupted_section( &csVirtual, &sigset );
243 /***********************************************************************
246 * Find the view containing a given address. The csVirtual section must be held by caller.
255 static struct file_view *VIRTUAL_FindView( const void *addr, size_t size )
257 struct file_view *view;
259 LIST_FOR_EACH_ENTRY( view, &views_list, struct file_view, entry )
261 if (view->base > addr) break; /* no matching view */
262 if ((const char *)view->base + view->size <= (const char *)addr) continue;
263 if ((const char *)view->base + view->size < (const char *)addr + size) break; /* size too large */
264 if ((const char *)addr + size < (const char *)addr) break; /* overflow */
271 /***********************************************************************
274 static inline UINT_PTR get_mask( ULONG zero_bits )
276 if (!zero_bits) return 0xffff; /* allocations are aligned to 64K by default */
277 if (zero_bits < page_shift) zero_bits = page_shift;
278 return (1 << zero_bits) - 1;
282 /***********************************************************************
285 * Find the first view overlapping at least part of the specified range.
286 * The csVirtual section must be held by caller.
288 static struct file_view *find_view_range( const void *addr, size_t size )
290 struct file_view *view;
292 LIST_FOR_EACH_ENTRY( view, &views_list, struct file_view, entry )
294 if ((const char *)view->base >= (const char *)addr + size) break;
295 if ((const char *)view->base + view->size > (const char *)addr) return view;
301 /***********************************************************************
304 * Find a free area between views inside the specified range.
305 * The csVirtual section must be held by caller.
307 static void *find_free_area( void *base, void *end, size_t size, size_t mask, int top_down )
314 start = ROUND_ADDR( (char *)end - size, mask );
315 if (start >= end || start < base) return NULL;
317 for (ptr = views_list.prev; ptr != &views_list; ptr = ptr->prev)
319 struct file_view *view = LIST_ENTRY( ptr, struct file_view, entry );
321 if ((char *)view->base + view->size <= (char *)start) break;
322 if ((char *)view->base >= (char *)start + size) continue;
323 start = ROUND_ADDR( (char *)view->base - size, mask );
324 /* stop if remaining space is not large enough */
325 if (!start || start >= end || start < base) return NULL;
330 start = ROUND_ADDR( (char *)base + mask, mask );
331 if (start >= end || (char *)end - (char *)start < size) return NULL;
333 for (ptr = views_list.next; ptr != &views_list; ptr = ptr->next)
335 struct file_view *view = LIST_ENTRY( ptr, struct file_view, entry );
337 if ((char *)view->base >= (char *)start + size) break;
338 if ((char *)view->base + view->size <= (char *)start) continue;
339 start = ROUND_ADDR( (char *)view->base + view->size + mask, mask );
340 /* stop if remaining space is not large enough */
341 if (!start || start >= end || (char *)end - (char *)start < size) return NULL;
348 /***********************************************************************
351 * Add a reserved area to the list maintained by libwine.
352 * The csVirtual section must be held by caller.
354 static void add_reserved_area( void *addr, size_t size )
356 TRACE( "adding %p-%p\n", addr, (char *)addr + size );
358 if (addr < user_space_limit)
360 /* unmap the part of the area that is below the limit */
361 assert( (char *)addr + size > (char *)user_space_limit );
362 munmap( addr, (char *)user_space_limit - (char *)addr );
363 size -= (char *)user_space_limit - (char *)addr;
364 addr = user_space_limit;
366 /* blow away existing mappings */
367 wine_anon_mmap( addr, size, PROT_NONE, MAP_NORESERVE | MAP_FIXED );
368 wine_mmap_add_reserved_area( addr, size );
372 /***********************************************************************
373 * remove_reserved_area
375 * Remove a reserved area from the list maintained by libwine.
376 * The csVirtual section must be held by caller.
378 static void remove_reserved_area( void *addr, size_t size )
380 struct file_view *view;
382 TRACE( "removing %p-%p\n", addr, (char *)addr + size );
383 wine_mmap_remove_reserved_area( addr, size, 0 );
385 /* unmap areas not covered by an existing view */
386 LIST_FOR_EACH_ENTRY( view, &views_list, struct file_view, entry )
388 if ((char *)view->base >= (char *)addr + size)
390 munmap( addr, size );
393 if ((char *)view->base + view->size <= (char *)addr) continue;
394 if (view->base > addr) munmap( addr, (char *)view->base - (char *)addr );
395 if ((char *)view->base + view->size > (char *)addr + size) break;
396 size = (char *)addr + size - ((char *)view->base + view->size);
397 addr = (char *)view->base + view->size;
402 /***********************************************************************
405 * Check if an address range goes beyond a given limit.
407 static inline int is_beyond_limit( const void *addr, size_t size, const void *limit )
409 return (addr >= limit || (const char *)addr + size > (const char *)limit);
413 /***********************************************************************
416 * Unmap an area, or simply replace it by an empty mapping if it is
417 * in a reserved area. The csVirtual section must be held by caller.
419 static inline void unmap_area( void *addr, size_t size )
421 if (wine_mmap_is_in_reserved_area( addr, size ))
422 wine_anon_mmap( addr, size, PROT_NONE, MAP_NORESERVE | MAP_FIXED );
423 else if (is_beyond_limit( addr, size, user_space_limit ))
424 add_reserved_area( addr, size );
426 munmap( addr, size );
430 /***********************************************************************
433 * Deletes a view. The csVirtual section must be held by caller.
435 static void delete_view( struct file_view *view ) /* [in] View */
437 if (!(view->protect & VPROT_SYSTEM)) unmap_area( view->base, view->size );
438 list_remove( &view->entry );
439 if (view->mapping) NtClose( view->mapping );
440 RtlFreeHeap( virtual_heap, 0, view );
444 /***********************************************************************
447 * Create a view. The csVirtual section must be held by caller.
449 static NTSTATUS create_view( struct file_view **view_ret, void *base, size_t size, unsigned int vprot )
451 struct file_view *view;
453 int unix_prot = VIRTUAL_GetUnixProt( vprot );
455 assert( !((UINT_PTR)base & page_mask) );
456 assert( !(size & page_mask) );
458 /* Create the view structure */
460 if (!(view = RtlAllocateHeap( virtual_heap, 0, sizeof(*view) + (size >> page_shift) - 1 )))
462 FIXME( "out of memory in virtual heap for %p-%p\n", base, (char *)base + size );
463 return STATUS_NO_MEMORY;
469 view->protect = vprot;
470 memset( view->prot, vprot, size >> page_shift );
472 /* Insert it in the linked list */
474 LIST_FOR_EACH( ptr, &views_list )
476 struct file_view *next = LIST_ENTRY( ptr, struct file_view, entry );
477 if (next->base > base) break;
479 list_add_before( ptr, &view->entry );
481 /* Check for overlapping views. This can happen if the previous view
482 * was a system view that got unmapped behind our back. In that case
483 * we recover by simply deleting it. */
485 if ((ptr = list_prev( &views_list, &view->entry )) != NULL)
487 struct file_view *prev = LIST_ENTRY( ptr, struct file_view, entry );
488 if ((char *)prev->base + prev->size > (char *)base)
490 TRACE( "overlapping prev view %p-%p for %p-%p\n",
491 prev->base, (char *)prev->base + prev->size,
492 base, (char *)base + view->size );
493 assert( prev->protect & VPROT_SYSTEM );
497 if ((ptr = list_next( &views_list, &view->entry )) != NULL)
499 struct file_view *next = LIST_ENTRY( ptr, struct file_view, entry );
500 if ((char *)base + view->size > (char *)next->base)
502 TRACE( "overlapping next view %p-%p for %p-%p\n",
503 next->base, (char *)next->base + next->size,
504 base, (char *)base + view->size );
505 assert( next->protect & VPROT_SYSTEM );
511 VIRTUAL_DEBUG_DUMP_VIEW( view );
513 if (force_exec_prot && !(vprot & VPROT_NOEXEC) && (unix_prot & PROT_READ) && !(unix_prot & PROT_EXEC))
515 TRACE( "forcing exec permission on %p-%p\n", base, (char *)base + size - 1 );
516 mprotect( base, size, unix_prot | PROT_EXEC );
518 return STATUS_SUCCESS;
522 /***********************************************************************
523 * VIRTUAL_GetWin32Prot
525 * Convert page protections to Win32 flags.
527 static DWORD VIRTUAL_GetWin32Prot( BYTE vprot )
529 DWORD ret = VIRTUAL_Win32Flags[vprot & 0x0f];
530 if (vprot & VPROT_NOCACHE) ret |= PAGE_NOCACHE;
531 if (vprot & VPROT_GUARD) ret |= PAGE_GUARD;
536 /***********************************************************************
539 * Build page protections from Win32 flags.
542 * protect [I] Win32 protection flags
545 * Value of page protection flags
547 static NTSTATUS get_vprot_flags( DWORD protect, unsigned int *vprot )
549 switch(protect & 0xff)
555 *vprot = VPROT_READ | VPROT_WRITE;
558 *vprot = VPROT_READ | VPROT_WRITECOPY;
563 case PAGE_EXECUTE_READ:
564 *vprot = VPROT_EXEC | VPROT_READ;
566 case PAGE_EXECUTE_READWRITE:
567 *vprot = VPROT_EXEC | VPROT_READ | VPROT_WRITE;
569 case PAGE_EXECUTE_WRITECOPY:
570 *vprot = VPROT_EXEC | VPROT_READ | VPROT_WRITECOPY;
576 return STATUS_INVALID_PARAMETER;
578 if (protect & PAGE_GUARD) *vprot |= VPROT_GUARD;
579 if (protect & PAGE_NOCACHE) *vprot |= VPROT_NOCACHE;
580 return STATUS_SUCCESS;
584 /***********************************************************************
587 * Change the protection of a range of pages.
593 static BOOL VIRTUAL_SetProt( FILE_VIEW *view, /* [in] Pointer to view */
594 void *base, /* [in] Starting address */
595 size_t size, /* [in] Size in bytes */
596 BYTE vprot ) /* [in] Protections to use */
598 int unix_prot = VIRTUAL_GetUnixProt(vprot);
599 BYTE *p = view->prot + (((char *)base - (char *)view->base) >> page_shift);
602 base, (char *)base + size - 1, VIRTUAL_GetProtStr( vprot ) );
604 if (view->protect & VPROT_WRITEWATCH)
606 /* each page may need different protections depending on write watch flag */
611 p[0] = vprot | (p[0] & VPROT_WRITEWATCH);
612 unix_prot = VIRTUAL_GetUnixProt( p[0] );
613 for (count = i = 1; i < size >> page_shift; i++, count++)
615 p[i] = vprot | (p[i] & VPROT_WRITEWATCH);
616 prot = VIRTUAL_GetUnixProt( p[i] );
617 if (prot == unix_prot) continue;
618 mprotect( addr, count << page_shift, unix_prot );
619 addr += count << page_shift;
623 if (count) mprotect( addr, count << page_shift, unix_prot );
624 VIRTUAL_DEBUG_DUMP_VIEW( view );
628 /* if setting stack guard pages, store the permissions first, as the guard may be
629 * triggered at any point after mprotect and change the permissions again */
630 if ((vprot & VPROT_GUARD) &&
631 (base >= NtCurrentTeb()->DeallocationStack) &&
632 (base < NtCurrentTeb()->Tib.StackBase))
634 memset( p, vprot, size >> page_shift );
635 mprotect( base, size, unix_prot );
636 VIRTUAL_DEBUG_DUMP_VIEW( view );
640 if (force_exec_prot && !(view->protect & VPROT_NOEXEC) &&
641 (unix_prot & PROT_READ) && !(unix_prot & PROT_EXEC))
643 TRACE( "forcing exec permission on %p-%p\n", base, (char *)base + size - 1 );
644 if (!mprotect( base, size, unix_prot | PROT_EXEC )) goto done;
645 /* exec + write may legitimately fail, in that case fall back to write only */
646 if (!(unix_prot & PROT_WRITE)) return FALSE;
649 if (mprotect( base, size, unix_prot )) return FALSE; /* FIXME: last error */
652 memset( p, vprot, size >> page_shift );
653 VIRTUAL_DEBUG_DUMP_VIEW( view );
658 /***********************************************************************
659 * reset_write_watches
661 * Reset write watches in a memory range.
663 static void reset_write_watches( struct file_view *view, void *base, SIZE_T size )
668 BYTE *p = view->prot + ((addr - (char *)view->base) >> page_shift);
670 p[0] |= VPROT_WRITEWATCH;
671 unix_prot = VIRTUAL_GetUnixProt( p[0] );
672 for (count = i = 1; i < size >> page_shift; i++, count++)
674 p[i] |= VPROT_WRITEWATCH;
675 prot = VIRTUAL_GetUnixProt( p[i] );
676 if (prot == unix_prot) continue;
677 mprotect( addr, count << page_shift, unix_prot );
678 addr += count << page_shift;
682 if (count) mprotect( addr, count << page_shift, unix_prot );
686 /***********************************************************************
689 * Release the extra memory while keeping the range starting on the granularity boundary.
691 static inline void *unmap_extra_space( void *ptr, size_t total_size, size_t wanted_size, size_t mask )
693 if ((ULONG_PTR)ptr & mask)
695 size_t extra = mask + 1 - ((ULONG_PTR)ptr & mask);
696 munmap( ptr, extra );
697 ptr = (char *)ptr + extra;
700 if (total_size > wanted_size)
701 munmap( (char *)ptr + wanted_size, total_size - wanted_size );
715 /***********************************************************************
716 * alloc_reserved_area_callback
718 * Try to map some space inside a reserved area. Callback for wine_mmap_enum_reserved_areas.
720 static int alloc_reserved_area_callback( void *start, size_t size, void *arg )
722 static void * const address_space_start = (void *)0x110000;
723 struct alloc_area *alloc = arg;
724 void *end = (char *)start + size;
726 if (start < address_space_start) start = address_space_start;
727 if (is_beyond_limit( start, size, alloc->limit )) end = alloc->limit;
728 if (start >= end) return 0;
730 /* make sure we don't touch the preloader reserved range */
731 if (preload_reserve_end >= start)
733 if (preload_reserve_end >= end)
735 if (preload_reserve_start <= start) return 0; /* no space in that area */
736 if (preload_reserve_start < end) end = preload_reserve_start;
738 else if (preload_reserve_start <= start) start = preload_reserve_end;
741 /* range is split in two by the preloader reservation, try first part */
742 if ((alloc->result = find_free_area( start, preload_reserve_start, alloc->size,
743 alloc->mask, alloc->top_down )))
745 /* then fall through to try second part */
746 start = preload_reserve_end;
749 if ((alloc->result = find_free_area( start, end, alloc->size, alloc->mask, alloc->top_down )))
756 /***********************************************************************
759 * Create a view and mmap the corresponding memory area.
760 * The csVirtual section must be held by caller.
762 static NTSTATUS map_view( struct file_view **view_ret, void *base, size_t size, size_t mask,
763 int top_down, unsigned int vprot )
770 if (is_beyond_limit( base, size, address_space_limit ))
771 return STATUS_WORKING_SET_LIMIT_RANGE;
773 switch (wine_mmap_is_in_reserved_area( base, size ))
775 case -1: /* partially in a reserved area */
776 return STATUS_CONFLICTING_ADDRESSES;
778 case 0: /* not in a reserved area, do a normal allocation */
779 if ((ptr = wine_anon_mmap( base, size, VIRTUAL_GetUnixProt(vprot), 0 )) == (void *)-1)
781 if (errno == ENOMEM) return STATUS_NO_MEMORY;
782 return STATUS_INVALID_PARAMETER;
786 /* We couldn't get the address we wanted */
787 if (is_beyond_limit( ptr, size, user_space_limit )) add_reserved_area( ptr, size );
788 else munmap( ptr, size );
789 return STATUS_CONFLICTING_ADDRESSES;
794 case 1: /* in a reserved area, make sure the address is available */
795 if (find_view_range( base, size )) return STATUS_CONFLICTING_ADDRESSES;
796 /* replace the reserved area by our mapping */
797 if ((ptr = wine_anon_mmap( base, size, VIRTUAL_GetUnixProt(vprot), MAP_FIXED )) != base)
798 return STATUS_INVALID_PARAMETER;
801 if (is_beyond_limit( ptr, size, working_set_limit )) working_set_limit = address_space_limit;
805 size_t view_size = size + mask + 1;
806 struct alloc_area alloc;
810 alloc.top_down = top_down;
811 alloc.limit = user_space_limit;
812 if (wine_mmap_enum_reserved_areas( alloc_reserved_area_callback, &alloc, top_down ))
815 TRACE( "got mem in reserved area %p-%p\n", ptr, (char *)ptr + size );
816 if (wine_anon_mmap( ptr, size, VIRTUAL_GetUnixProt(vprot), MAP_FIXED ) != ptr)
817 return STATUS_INVALID_PARAMETER;
823 if ((ptr = wine_anon_mmap( NULL, view_size, VIRTUAL_GetUnixProt(vprot), 0 )) == (void *)-1)
825 if (errno == ENOMEM) return STATUS_NO_MEMORY;
826 return STATUS_INVALID_PARAMETER;
828 TRACE( "got mem with anon mmap %p-%p\n", ptr, (char *)ptr + size );
829 /* if we got something beyond the user limit, unmap it and retry */
830 if (is_beyond_limit( ptr, view_size, user_space_limit )) add_reserved_area( ptr, view_size );
833 ptr = unmap_extra_space( ptr, view_size, size, mask );
836 status = create_view( view_ret, ptr, size, vprot );
837 if (status != STATUS_SUCCESS) unmap_area( ptr, size );
842 /***********************************************************************
845 * Wrapper for mmap() to map a file into a view, falling back to read if mmap fails.
846 * The csVirtual section must be held by caller.
848 static NTSTATUS map_file_into_view( struct file_view *view, int fd, size_t start, size_t size,
849 off_t offset, unsigned int vprot, BOOL removable )
852 int prot = VIRTUAL_GetUnixProt( vprot | VPROT_COMMITTED /* make sure it is accessible */ );
853 BOOL shared_write = (vprot & VPROT_WRITE) != 0;
855 assert( start < view->size );
856 assert( start + size <= view->size );
858 /* only try mmap if media is not removable (or if we require write access) */
859 if (!removable || shared_write)
861 int flags = MAP_FIXED | (shared_write ? MAP_SHARED : MAP_PRIVATE);
863 if (mmap( (char *)view->base + start, size, prot, flags, fd, offset ) != (void *)-1)
866 /* mmap() failed; if this is because the file offset is not */
867 /* page-aligned (EINVAL), or because the underlying filesystem */
868 /* does not support mmap() (ENOEXEC,ENODEV), we do it by hand. */
869 if ((errno != ENOEXEC) && (errno != EINVAL) && (errno != ENODEV)) return FILE_GetNtStatus();
870 if (shared_write) /* we cannot fake shared write mappings */
872 if (errno == EINVAL) return STATUS_INVALID_PARAMETER;
873 ERR( "shared writable mmap not supported, broken filesystem?\n" );
874 return STATUS_NOT_SUPPORTED;
878 /* Reserve the memory with an anonymous mmap */
879 ptr = wine_anon_mmap( (char *)view->base + start, size, PROT_READ | PROT_WRITE, MAP_FIXED );
880 if (ptr == (void *)-1) return FILE_GetNtStatus();
881 /* Now read in the file */
882 pread( fd, ptr, size, offset );
883 if (prot != (PROT_READ|PROT_WRITE)) mprotect( ptr, size, prot ); /* Set the right protection */
885 memset( view->prot + (start >> page_shift), vprot, ROUND_SIZE(start,size) >> page_shift );
886 return STATUS_SUCCESS;
890 /***********************************************************************
893 * Get the size of the committed range starting at base.
894 * Also return the protections for the first page.
896 static SIZE_T get_committed_size( struct file_view *view, void *base, BYTE *vprot )
900 start = ((char *)base - (char *)view->base) >> page_shift;
901 *vprot = view->prot[start];
903 if (view->mapping && !(view->protect & VPROT_COMMITTED))
906 SERVER_START_REQ( get_mapping_committed_range )
908 req->handle = wine_server_obj_handle( view->mapping );
909 req->offset = start << page_shift;
910 if (!wine_server_call( req ))
913 if (reply->committed)
915 *vprot |= VPROT_COMMITTED;
916 for (i = 0; i < ret >> page_shift; i++) view->prot[start+i] |= VPROT_COMMITTED;
923 for (i = start + 1; i < view->size >> page_shift; i++)
924 if ((*vprot ^ view->prot[i]) & VPROT_COMMITTED) break;
925 return (i - start) << page_shift;
929 /***********************************************************************
932 * Decommit some pages of a given view.
933 * The csVirtual section must be held by caller.
935 static NTSTATUS decommit_pages( struct file_view *view, size_t start, size_t size )
937 if (wine_anon_mmap( (char *)view->base + start, size, PROT_NONE, MAP_FIXED ) != (void *)-1)
939 BYTE *p = view->prot + (start >> page_shift);
941 while (size--) *p++ &= ~VPROT_COMMITTED;
942 return STATUS_SUCCESS;
944 return FILE_GetNtStatus();
948 /***********************************************************************
949 * allocate_dos_memory
951 * Allocate the DOS memory range.
953 static NTSTATUS allocate_dos_memory( struct file_view **view, unsigned int vprot )
957 void * const low_64k = (void *)0x10000;
958 const size_t dosmem_size = 0x110000;
959 int unix_prot = VIRTUAL_GetUnixProt( vprot );
962 /* check for existing view */
964 if ((ptr = list_head( &views_list )))
966 struct file_view *first_view = LIST_ENTRY( ptr, struct file_view, entry );
967 if (first_view->base < (void *)dosmem_size) return STATUS_CONFLICTING_ADDRESSES;
970 /* check without the first 64K */
972 if (wine_mmap_is_in_reserved_area( low_64k, dosmem_size - 0x10000 ) != 1)
974 addr = wine_anon_mmap( low_64k, dosmem_size - 0x10000, unix_prot, 0 );
977 if (addr != (void *)-1) munmap( addr, dosmem_size - 0x10000 );
978 return map_view( view, NULL, dosmem_size, 0xffff, 0, vprot );
982 /* now try to allocate the low 64K too */
984 if (wine_mmap_is_in_reserved_area( NULL, 0x10000 ) != 1)
986 addr = wine_anon_mmap( (void *)page_size, 0x10000 - page_size, unix_prot, 0 );
987 if (addr == (void *)page_size)
990 TRACE( "successfully mapped low 64K range\n" );
994 if (addr != (void *)-1) munmap( addr, 0x10000 - page_size );
996 TRACE( "failed to map low 64K range\n" );
1000 /* now reserve the whole range */
1002 size = (char *)dosmem_size - (char *)addr;
1003 wine_anon_mmap( addr, size, unix_prot, MAP_FIXED );
1004 return create_view( view, addr, size, vprot );
1008 /***********************************************************************
1011 * Map an executable (PE format) image into memory.
1013 static NTSTATUS map_image( HANDLE hmapping, int fd, char *base, SIZE_T total_size, SIZE_T mask,
1014 SIZE_T header_size, int shared_fd, HANDLE dup_mapping, PVOID *addr_ptr )
1016 IMAGE_DOS_HEADER *dos;
1017 IMAGE_NT_HEADERS *nt;
1018 IMAGE_SECTION_HEADER *sec;
1019 IMAGE_DATA_DIRECTORY *imports;
1020 NTSTATUS status = STATUS_CONFLICTING_ADDRESSES;
1025 struct file_view *view = NULL;
1026 char *ptr, *header_end;
1029 /* zero-map the whole range */
1031 server_enter_uninterrupted_section( &csVirtual, &sigset );
1033 if (base >= (char *)0x110000) /* make sure the DOS area remains free */
1034 status = map_view( &view, base, total_size, mask, FALSE,
1035 VPROT_COMMITTED | VPROT_READ | VPROT_EXEC | VPROT_WRITECOPY | VPROT_IMAGE );
1037 if (status != STATUS_SUCCESS)
1038 status = map_view( &view, NULL, total_size, mask, FALSE,
1039 VPROT_COMMITTED | VPROT_READ | VPROT_EXEC | VPROT_WRITECOPY | VPROT_IMAGE );
1041 if (status != STATUS_SUCCESS) goto error;
1044 TRACE_(module)( "mapped PE file at %p-%p\n", ptr, ptr + total_size );
1046 /* map the header */
1048 if (fstat( fd, &st ) == -1)
1050 status = FILE_GetNtStatus();
1053 status = STATUS_INVALID_IMAGE_FORMAT; /* generic error */
1054 if (!st.st_size) goto error;
1055 header_size = min( header_size, st.st_size );
1056 if (map_file_into_view( view, fd, 0, header_size, 0, VPROT_COMMITTED | VPROT_READ | VPROT_WRITECOPY,
1057 !dup_mapping ) != STATUS_SUCCESS) goto error;
1058 dos = (IMAGE_DOS_HEADER *)ptr;
1059 nt = (IMAGE_NT_HEADERS *)(ptr + dos->e_lfanew);
1060 header_end = ptr + ROUND_SIZE( 0, header_size );
1061 memset( ptr + header_size, 0, header_end - (ptr + header_size) );
1062 if ((char *)(nt + 1) > header_end) goto error;
1063 sec = (IMAGE_SECTION_HEADER*)((char*)&nt->OptionalHeader+nt->FileHeader.SizeOfOptionalHeader);
1064 if ((char *)(sec + nt->FileHeader.NumberOfSections) > header_end) goto error;
1066 imports = nt->OptionalHeader.DataDirectory + IMAGE_DIRECTORY_ENTRY_IMPORT;
1067 if (!imports->Size || !imports->VirtualAddress) imports = NULL;
1069 /* check the architecture */
1072 if (nt->FileHeader.Machine != IMAGE_FILE_MACHINE_AMD64)
1074 if (nt->FileHeader.Machine != IMAGE_FILE_MACHINE_I386)
1077 MESSAGE("Trying to load PE image for unsupported architecture (");
1078 switch (nt->FileHeader.Machine)
1080 case IMAGE_FILE_MACHINE_UNKNOWN: MESSAGE("Unknown"); break;
1081 case IMAGE_FILE_MACHINE_I860: MESSAGE("I860"); break;
1082 case IMAGE_FILE_MACHINE_I386: MESSAGE("I386"); break;
1083 case IMAGE_FILE_MACHINE_R3000: MESSAGE("R3000"); break;
1084 case IMAGE_FILE_MACHINE_R4000: MESSAGE("R4000"); break;
1085 case IMAGE_FILE_MACHINE_R10000: MESSAGE("R10000"); break;
1086 case IMAGE_FILE_MACHINE_ALPHA: MESSAGE("Alpha"); break;
1087 case IMAGE_FILE_MACHINE_POWERPC: MESSAGE("PowerPC"); break;
1088 case IMAGE_FILE_MACHINE_IA64: MESSAGE("IA-64"); break;
1089 case IMAGE_FILE_MACHINE_ALPHA64: MESSAGE("Alpha-64"); break;
1090 case IMAGE_FILE_MACHINE_AMD64: MESSAGE("AMD-64"); break;
1091 case IMAGE_FILE_MACHINE_ARM: MESSAGE("ARM"); break;
1092 default: MESSAGE("Unknown-%04x", nt->FileHeader.Machine); break;
1098 /* check for non page-aligned binary */
1100 if (nt->OptionalHeader.SectionAlignment <= page_mask)
1102 /* unaligned sections, this happens for native subsystem binaries */
1103 /* in that case Windows simply maps in the whole file */
1105 if (map_file_into_view( view, fd, 0, total_size, 0, VPROT_COMMITTED | VPROT_READ,
1106 !dup_mapping ) != STATUS_SUCCESS) goto error;
1108 /* check that all sections are loaded at the right offset */
1109 if (nt->OptionalHeader.FileAlignment != nt->OptionalHeader.SectionAlignment) goto error;
1110 for (i = 0; i < nt->FileHeader.NumberOfSections; i++)
1112 if (sec[i].VirtualAddress != sec[i].PointerToRawData)
1113 goto error; /* Windows refuses to load in that case too */
1116 /* set the image protections */
1117 VIRTUAL_SetProt( view, ptr, total_size,
1118 VPROT_COMMITTED | VPROT_READ | VPROT_WRITECOPY | VPROT_EXEC );
1120 /* no relocations are performed on non page-aligned binaries */
1125 /* map all the sections */
1127 for (i = pos = 0; i < nt->FileHeader.NumberOfSections; i++, sec++)
1129 static const SIZE_T sector_align = 0x1ff;
1130 SIZE_T map_size, file_start, file_size, end;
1132 if (!sec->Misc.VirtualSize)
1133 map_size = ROUND_SIZE( 0, sec->SizeOfRawData );
1135 map_size = ROUND_SIZE( 0, sec->Misc.VirtualSize );
1137 /* file positions are rounded to sector boundaries regardless of OptionalHeader.FileAlignment */
1138 file_start = sec->PointerToRawData & ~sector_align;
1139 file_size = (sec->SizeOfRawData + (sec->PointerToRawData & sector_align) + sector_align) & ~sector_align;
1140 if (file_size > map_size) file_size = map_size;
1142 /* a few sanity checks */
1143 end = sec->VirtualAddress + ROUND_SIZE( sec->VirtualAddress, map_size );
1144 if (sec->VirtualAddress > total_size || end > total_size || end < sec->VirtualAddress)
1146 WARN_(module)( "Section %.8s too large (%x+%lx/%lx)\n",
1147 sec->Name, sec->VirtualAddress, map_size, total_size );
1151 if ((sec->Characteristics & IMAGE_SCN_MEM_SHARED) &&
1152 (sec->Characteristics & IMAGE_SCN_MEM_WRITE))
1154 TRACE_(module)( "mapping shared section %.8s at %p off %x (%x) size %lx (%lx) flags %x\n",
1155 sec->Name, ptr + sec->VirtualAddress,
1156 sec->PointerToRawData, (int)pos, file_size, map_size,
1157 sec->Characteristics );
1158 if (map_file_into_view( view, shared_fd, sec->VirtualAddress, map_size, pos,
1159 VPROT_COMMITTED | VPROT_READ | VPROT_WRITE,
1160 FALSE ) != STATUS_SUCCESS)
1162 ERR_(module)( "Could not map shared section %.8s\n", sec->Name );
1166 /* check if the import directory falls inside this section */
1167 if (imports && imports->VirtualAddress >= sec->VirtualAddress &&
1168 imports->VirtualAddress < sec->VirtualAddress + map_size)
1170 UINT_PTR base = imports->VirtualAddress & ~page_mask;
1171 UINT_PTR end = base + ROUND_SIZE( imports->VirtualAddress, imports->Size );
1172 if (end > sec->VirtualAddress + map_size) end = sec->VirtualAddress + map_size;
1174 map_file_into_view( view, shared_fd, base, end - base,
1175 pos + (base - sec->VirtualAddress),
1176 VPROT_COMMITTED | VPROT_READ | VPROT_WRITECOPY,
1183 TRACE_(module)( "mapping section %.8s at %p off %x size %x virt %x flags %x\n",
1184 sec->Name, ptr + sec->VirtualAddress,
1185 sec->PointerToRawData, sec->SizeOfRawData,
1186 sec->Misc.VirtualSize, sec->Characteristics );
1188 if (!sec->PointerToRawData || !file_size) continue;
1190 /* Note: if the section is not aligned properly map_file_into_view will magically
1191 * fall back to read(), so we don't need to check anything here.
1193 end = file_start + file_size;
1194 if (sec->PointerToRawData >= st.st_size ||
1195 end > ((st.st_size + sector_align) & ~sector_align) ||
1197 map_file_into_view( view, fd, sec->VirtualAddress, file_size, file_start,
1198 VPROT_COMMITTED | VPROT_READ | VPROT_WRITECOPY,
1199 !dup_mapping ) != STATUS_SUCCESS)
1201 ERR_(module)( "Could not map section %.8s, file probably truncated\n", sec->Name );
1205 if (file_size & page_mask)
1207 end = ROUND_SIZE( 0, file_size );
1208 if (end > map_size) end = map_size;
1209 TRACE_(module)("clearing %p - %p\n",
1210 ptr + sec->VirtualAddress + file_size,
1211 ptr + sec->VirtualAddress + end );
1212 memset( ptr + sec->VirtualAddress + file_size, 0, end - file_size );
1217 /* perform base relocation, if necessary */
1220 ((nt->FileHeader.Characteristics & IMAGE_FILE_DLL) ||
1221 !NtCurrentTeb()->Peb->ImageBaseAddress) )
1223 IMAGE_BASE_RELOCATION *rel, *end;
1224 const IMAGE_DATA_DIRECTORY *relocs;
1226 if (nt->FileHeader.Characteristics & IMAGE_FILE_RELOCS_STRIPPED)
1228 WARN_(module)( "Need to relocate module from %p to %p, but there are no relocation records\n",
1230 status = STATUS_CONFLICTING_ADDRESSES;
1234 TRACE_(module)( "relocating from %p-%p to %p-%p\n",
1235 base, base + total_size, ptr, ptr + total_size );
1237 relocs = &nt->OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_BASERELOC];
1238 rel = (IMAGE_BASE_RELOCATION *)(ptr + relocs->VirtualAddress);
1239 end = (IMAGE_BASE_RELOCATION *)(ptr + relocs->VirtualAddress + relocs->Size);
1242 while (rel < end - 1 && rel->SizeOfBlock)
1244 if (rel->VirtualAddress >= total_size)
1246 WARN_(module)( "invalid address %p in relocation %p\n", ptr + rel->VirtualAddress, rel );
1247 status = STATUS_ACCESS_VIOLATION;
1250 rel = LdrProcessRelocationBlock( ptr + rel->VirtualAddress,
1251 (rel->SizeOfBlock - sizeof(*rel)) / sizeof(USHORT),
1252 (USHORT *)(rel + 1), delta );
1253 if (!rel) goto error;
1257 /* set the image protections */
1259 VIRTUAL_SetProt( view, ptr, ROUND_SIZE( 0, header_size ), VPROT_COMMITTED | VPROT_READ );
1261 sec = (IMAGE_SECTION_HEADER*)((char *)&nt->OptionalHeader+nt->FileHeader.SizeOfOptionalHeader);
1262 for (i = 0; i < nt->FileHeader.NumberOfSections; i++, sec++)
1265 BYTE vprot = VPROT_COMMITTED;
1267 if (sec->Misc.VirtualSize)
1268 size = ROUND_SIZE( sec->VirtualAddress, sec->Misc.VirtualSize );
1270 size = ROUND_SIZE( sec->VirtualAddress, sec->SizeOfRawData );
1272 if (sec->Characteristics & IMAGE_SCN_MEM_READ) vprot |= VPROT_READ;
1273 if (sec->Characteristics & IMAGE_SCN_MEM_WRITE) vprot |= VPROT_READ|VPROT_WRITECOPY;
1274 if (sec->Characteristics & IMAGE_SCN_MEM_EXECUTE) vprot |= VPROT_EXEC;
1276 /* Dumb game crack lets the AOEP point into a data section. Adjust. */
1277 if ((nt->OptionalHeader.AddressOfEntryPoint >= sec->VirtualAddress) &&
1278 (nt->OptionalHeader.AddressOfEntryPoint < sec->VirtualAddress + size))
1279 vprot |= VPROT_EXEC;
1281 VIRTUAL_SetProt( view, ptr + sec->VirtualAddress, size, vprot );
1285 view->mapping = dup_mapping;
1286 server_leave_uninterrupted_section( &csVirtual, &sigset );
1289 #ifdef VALGRIND_LOAD_PDB_DEBUGINFO
1290 VALGRIND_LOAD_PDB_DEBUGINFO(fd, ptr, total_size, delta);
1292 return STATUS_SUCCESS;
1295 if (view) delete_view( view );
1296 server_leave_uninterrupted_section( &csVirtual, &sigset );
1297 if (dup_mapping) NtClose( dup_mapping );
1302 /* callback for wine_mmap_enum_reserved_areas to allocate space for the virtual heap */
1303 static int alloc_virtual_heap( void *base, size_t size, void *arg )
1305 void **heap_base = arg;
1307 if (is_beyond_limit( base, size, address_space_limit )) address_space_limit = (char *)base + size;
1308 if (size < VIRTUAL_HEAP_SIZE) return 0;
1309 *heap_base = wine_anon_mmap( (char *)base + size - VIRTUAL_HEAP_SIZE,
1310 VIRTUAL_HEAP_SIZE, PROT_READ|PROT_WRITE, MAP_FIXED );
1311 return (*heap_base != (void *)-1);
1314 /***********************************************************************
1317 void virtual_init(void)
1319 const char *preload;
1321 struct file_view *heap_view;
1324 page_size = getpagesize();
1325 page_mask = page_size - 1;
1326 /* Make sure we have a power of 2 */
1327 assert( !(page_size & page_mask) );
1329 while ((1 << page_shift) != page_size) page_shift++;
1330 user_space_limit = working_set_limit = address_space_limit = (void *)~page_mask;
1331 #endif /* page_mask */
1332 if ((preload = getenv("WINEPRELOADRESERVE")))
1334 unsigned long start, end;
1335 if (sscanf( preload, "%lx-%lx", &start, &end ) == 2)
1337 preload_reserve_start = (void *)start;
1338 preload_reserve_end = (void *)end;
1342 /* try to find space in a reserved area for the virtual heap */
1343 if (!wine_mmap_enum_reserved_areas( alloc_virtual_heap, &heap_base, 1 ))
1344 heap_base = wine_anon_mmap( NULL, VIRTUAL_HEAP_SIZE, PROT_READ|PROT_WRITE, 0 );
1346 assert( heap_base != (void *)-1 );
1347 virtual_heap = RtlCreateHeap( HEAP_NO_SERIALIZE, heap_base, VIRTUAL_HEAP_SIZE,
1348 VIRTUAL_HEAP_SIZE, NULL, NULL );
1349 create_view( &heap_view, heap_base, VIRTUAL_HEAP_SIZE, VPROT_COMMITTED | VPROT_READ | VPROT_WRITE );
1353 /***********************************************************************
1354 * virtual_init_threading
1356 void virtual_init_threading(void)
1362 /***********************************************************************
1363 * virtual_get_system_info
1365 void virtual_get_system_info( SYSTEM_BASIC_INFORMATION *info )
1367 info->dwUnknown1 = 0;
1368 info->uKeMaximumIncrement = 0; /* FIXME */
1369 info->uPageSize = page_size;
1370 info->uMmLowestPhysicalPage = 1;
1371 info->uMmHighestPhysicalPage = 0x7fffffff / page_size;
1372 info->uMmNumberOfPhysicalPages = info->uMmHighestPhysicalPage - info->uMmLowestPhysicalPage;
1373 info->uAllocationGranularity = get_mask(0) + 1;
1374 info->pLowestUserAddress = (void *)0x10000;
1375 info->pMmHighestUserAddress = (char *)user_space_limit - 1;
1376 info->uKeActiveProcessors = NtCurrentTeb()->Peb->NumberOfProcessors;
1377 info->bKeNumberProcessors = info->uKeActiveProcessors;
1381 /***********************************************************************
1382 * virtual_create_system_view
1384 NTSTATUS virtual_create_system_view( void *base, SIZE_T size, DWORD vprot )
1390 size = ROUND_SIZE( base, size );
1391 base = ROUND_ADDR( base, page_mask );
1392 server_enter_uninterrupted_section( &csVirtual, &sigset );
1393 status = create_view( &view, base, size, vprot );
1394 if (!status) TRACE( "created %p-%p\n", base, (char *)base + size );
1395 server_leave_uninterrupted_section( &csVirtual, &sigset );
1400 /***********************************************************************
1401 * virtual_alloc_thread_stack
1403 NTSTATUS virtual_alloc_thread_stack( TEB *teb, SIZE_T reserve_size, SIZE_T commit_size )
1410 if (!reserve_size || !commit_size)
1412 IMAGE_NT_HEADERS *nt = RtlImageNtHeader( NtCurrentTeb()->Peb->ImageBaseAddress );
1413 if (!reserve_size) reserve_size = nt->OptionalHeader.SizeOfStackReserve;
1414 if (!commit_size) commit_size = nt->OptionalHeader.SizeOfStackCommit;
1417 size = max( reserve_size, commit_size );
1418 if (size < 1024 * 1024) size = 1024 * 1024; /* Xlib needs a large stack */
1419 size = (size + 0xffff) & ~0xffff; /* round to 64K boundary */
1421 server_enter_uninterrupted_section( &csVirtual, &sigset );
1423 if ((status = map_view( &view, NULL, size, 0xffff, 0,
1424 VPROT_READ | VPROT_WRITE | VPROT_COMMITTED | VPROT_VALLOC )) != STATUS_SUCCESS)
1427 #ifdef VALGRIND_STACK_REGISTER
1428 VALGRIND_STACK_REGISTER( view->base, (char *)view->base + view->size );
1431 /* setup no access guard page */
1432 VIRTUAL_SetProt( view, view->base, page_size, VPROT_COMMITTED );
1433 VIRTUAL_SetProt( view, (char *)view->base + page_size, page_size,
1434 VPROT_READ | VPROT_WRITE | VPROT_COMMITTED | VPROT_GUARD );
1436 /* note: limit is lower than base since the stack grows down */
1437 teb->DeallocationStack = view->base;
1438 teb->Tib.StackBase = (char *)view->base + view->size;
1439 teb->Tib.StackLimit = (char *)view->base + 2 * page_size;
1441 server_leave_uninterrupted_section( &csVirtual, &sigset );
1446 /***********************************************************************
1447 * virtual_clear_thread_stack
1449 * Clear the stack contents before calling the main entry point, some broken apps need that.
1451 void virtual_clear_thread_stack(void)
1453 void *stack = NtCurrentTeb()->Tib.StackLimit;
1454 size_t size = (char *)NtCurrentTeb()->Tib.StackBase - (char *)NtCurrentTeb()->Tib.StackLimit;
1456 wine_anon_mmap( stack, size, PROT_READ | PROT_WRITE, MAP_FIXED );
1457 if (force_exec_prot) mprotect( stack, size, PROT_READ | PROT_WRITE | PROT_EXEC );
1461 /***********************************************************************
1462 * virtual_handle_fault
1464 NTSTATUS virtual_handle_fault( LPCVOID addr, DWORD err )
1467 NTSTATUS ret = STATUS_ACCESS_VIOLATION;
1470 server_enter_uninterrupted_section( &csVirtual, &sigset );
1471 if ((view = VIRTUAL_FindView( addr, 0 )))
1473 void *page = ROUND_ADDR( addr, page_mask );
1474 BYTE *vprot = &view->prot[((const char *)page - (const char *)view->base) >> page_shift];
1475 if (*vprot & VPROT_GUARD)
1477 VIRTUAL_SetProt( view, page, page_size, *vprot & ~VPROT_GUARD );
1478 ret = STATUS_GUARD_PAGE_VIOLATION;
1480 if ((err & EXCEPTION_WRITE_FAULT) && (view->protect & VPROT_WRITEWATCH))
1482 if (*vprot & VPROT_WRITEWATCH)
1484 *vprot &= ~VPROT_WRITEWATCH;
1485 VIRTUAL_SetProt( view, page, page_size, *vprot );
1487 /* ignore fault if page is writable now */
1488 if (VIRTUAL_GetUnixProt( *vprot ) & PROT_WRITE) ret = STATUS_SUCCESS;
1491 server_leave_uninterrupted_section( &csVirtual, &sigset );
1497 /***********************************************************************
1498 * virtual_handle_stack_fault
1500 * Handle an access fault inside the current thread stack.
1501 * Called from inside a signal handler.
1503 BOOL virtual_handle_stack_fault( void *addr )
1508 RtlEnterCriticalSection( &csVirtual ); /* no need for signal masking inside signal handler */
1509 if ((view = VIRTUAL_FindView( addr, 0 )))
1511 void *page = ROUND_ADDR( addr, page_mask );
1512 BYTE vprot = view->prot[((const char *)page - (const char *)view->base) >> page_shift];
1513 if (vprot & VPROT_GUARD)
1515 VIRTUAL_SetProt( view, page, page_size, vprot & ~VPROT_GUARD );
1516 if ((char *)page + page_size == NtCurrentTeb()->Tib.StackLimit)
1517 NtCurrentTeb()->Tib.StackLimit = page;
1521 RtlLeaveCriticalSection( &csVirtual );
1526 /***********************************************************************
1527 * virtual_check_buffer_for_read
1529 * Check if a memory buffer can be read, triggering page faults if needed for DIB section access.
1531 BOOL virtual_check_buffer_for_read( const void *ptr, SIZE_T size )
1533 if (!size) return TRUE;
1534 if (!ptr) return FALSE;
1538 volatile const char *p = ptr;
1540 SIZE_T count = size;
1542 while (count > page_size)
1549 dummy = p[count - 1];
1560 /***********************************************************************
1561 * virtual_check_buffer_for_write
1563 * Check if a memory buffer can be written to, triggering page faults if needed for write watches.
1565 BOOL virtual_check_buffer_for_write( void *ptr, SIZE_T size )
1567 if (!size) return TRUE;
1568 if (!ptr) return FALSE;
1572 volatile char *p = ptr;
1573 SIZE_T count = size;
1575 while (count > page_size)
1593 /***********************************************************************
1594 * VIRTUAL_SetForceExec
1596 * Whether to force exec prot on all views.
1598 void VIRTUAL_SetForceExec( BOOL enable )
1600 struct file_view *view;
1603 server_enter_uninterrupted_section( &csVirtual, &sigset );
1604 if (!force_exec_prot != !enable) /* change all existing views */
1606 force_exec_prot = enable;
1608 LIST_FOR_EACH_ENTRY( view, &views_list, struct file_view, entry )
1611 char *addr = view->base;
1612 BYTE commit = view->mapping ? VPROT_COMMITTED : 0; /* file mappings are always accessible */
1613 int unix_prot = VIRTUAL_GetUnixProt( view->prot[0] | commit );
1615 if (view->protect & VPROT_NOEXEC) continue;
1616 for (count = i = 1; i < view->size >> page_shift; i++, count++)
1618 int prot = VIRTUAL_GetUnixProt( view->prot[i] | commit );
1619 if (prot == unix_prot) continue;
1620 if ((unix_prot & PROT_READ) && !(unix_prot & PROT_EXEC))
1622 TRACE( "%s exec prot for %p-%p\n",
1623 force_exec_prot ? "enabling" : "disabling",
1624 addr, addr + (count << page_shift) - 1 );
1625 mprotect( addr, count << page_shift,
1626 unix_prot | (force_exec_prot ? PROT_EXEC : 0) );
1628 addr += (count << page_shift);
1634 if ((unix_prot & PROT_READ) && !(unix_prot & PROT_EXEC))
1636 TRACE( "%s exec prot for %p-%p\n",
1637 force_exec_prot ? "enabling" : "disabling",
1638 addr, addr + (count << page_shift) - 1 );
1639 mprotect( addr, count << page_shift,
1640 unix_prot | (force_exec_prot ? PROT_EXEC : 0) );
1645 server_leave_uninterrupted_section( &csVirtual, &sigset );
1654 /* free reserved areas above the limit; callback for wine_mmap_enum_reserved_areas */
1655 static int free_reserved_memory( void *base, size_t size, void *arg )
1657 struct free_range *range = arg;
1659 if ((char *)base >= range->limit) return 0;
1660 if ((char *)base + size <= range->base) return 0;
1661 if ((char *)base < range->base)
1663 size -= range->base - (char *)base;
1666 if ((char *)base + size > range->limit) size = range->limit - (char *)base;
1667 remove_reserved_area( base, size );
1668 return 1; /* stop enumeration since the list has changed */
1671 /***********************************************************************
1672 * virtual_release_address_space
1674 * Release some address space once we have loaded and initialized the app.
1676 void virtual_release_address_space( BOOL free_high_mem )
1679 struct free_range range;
1682 server_enter_uninterrupted_section( &csVirtual, &sigset );
1684 #ifndef __APPLE__ /* dyld doesn't support parts of the WINE_DOS segment being unmapped */
1685 range.base = (char *)0x20000000;
1686 range.limit = (char *)0x7f000000;
1687 while (wine_mmap_enum_reserved_areas( free_reserved_memory, &range, 0 )) /* nothing */;
1690 /* no large address space on win9x */
1691 if (free_high_mem && NtCurrentTeb()->Peb->OSPlatformId == VER_PLATFORM_WIN32_NT)
1693 range.base = (char *)0x82000000;
1694 range.limit = address_space_limit;
1695 while (wine_mmap_enum_reserved_areas( free_reserved_memory, &range, 1 )) /* nothing */;
1696 user_space_limit = working_set_limit = address_space_limit;
1698 server_leave_uninterrupted_section( &csVirtual, &sigset );
1703 /***********************************************************************
1704 * NtAllocateVirtualMemory (NTDLL.@)
1705 * ZwAllocateVirtualMemory (NTDLL.@)
1707 NTSTATUS WINAPI NtAllocateVirtualMemory( HANDLE process, PVOID *ret, ULONG zero_bits,
1708 SIZE_T *size_ptr, ULONG type, ULONG protect )
1712 SIZE_T size = *size_ptr;
1713 SIZE_T mask = get_mask( zero_bits );
1714 NTSTATUS status = STATUS_SUCCESS;
1715 struct file_view *view;
1718 TRACE("%p %p %08lx %x %08x\n", process, *ret, size, type, protect );
1720 if (!size) return STATUS_INVALID_PARAMETER;
1722 if (process != NtCurrentProcess())
1725 apc_result_t result;
1727 memset( &call, 0, sizeof(call) );
1729 call.virtual_alloc.type = APC_VIRTUAL_ALLOC;
1730 call.virtual_alloc.addr = wine_server_client_ptr( *ret );
1731 call.virtual_alloc.size = *size_ptr;
1732 call.virtual_alloc.zero_bits = zero_bits;
1733 call.virtual_alloc.op_type = type;
1734 call.virtual_alloc.prot = protect;
1735 status = NTDLL_queue_process_apc( process, &call, &result );
1736 if (status != STATUS_SUCCESS) return status;
1738 if (result.virtual_alloc.status == STATUS_SUCCESS)
1740 *ret = wine_server_get_ptr( result.virtual_alloc.addr );
1741 *size_ptr = result.virtual_alloc.size;
1743 return result.virtual_alloc.status;
1746 /* Round parameters to a page boundary */
1748 if (is_beyond_limit( 0, size, working_set_limit )) return STATUS_WORKING_SET_LIMIT_RANGE;
1750 if ((status = get_vprot_flags( protect, &vprot ))) return status;
1751 vprot |= VPROT_VALLOC;
1752 if (type & MEM_COMMIT) vprot |= VPROT_COMMITTED;
1756 if (type & MEM_RESERVE) /* Round down to 64k boundary */
1757 base = ROUND_ADDR( *ret, mask );
1759 base = ROUND_ADDR( *ret, page_mask );
1760 size = (((UINT_PTR)*ret + size + page_mask) & ~page_mask) - (UINT_PTR)base;
1762 /* address 1 is magic to mean DOS area */
1763 if (!base && *ret == (void *)1 && size == 0x110000)
1765 server_enter_uninterrupted_section( &csVirtual, &sigset );
1766 status = allocate_dos_memory( &view, vprot );
1767 if (status == STATUS_SUCCESS)
1770 *size_ptr = view->size;
1772 server_leave_uninterrupted_section( &csVirtual, &sigset );
1776 /* disallow low 64k, wrap-around and kernel space */
1777 if (((char *)base < (char *)0x10000) ||
1778 ((char *)base + size < (char *)base) ||
1779 is_beyond_limit( base, size, address_space_limit ))
1780 return STATUS_INVALID_PARAMETER;
1785 size = (size + page_mask) & ~page_mask;
1788 /* Compute the alloc type flags */
1790 if (!(type & (MEM_COMMIT | MEM_RESERVE)) ||
1791 (type & ~(MEM_COMMIT | MEM_RESERVE | MEM_TOP_DOWN | MEM_WRITE_WATCH | MEM_RESET)))
1793 WARN("called with wrong alloc type flags (%08x) !\n", type);
1794 return STATUS_INVALID_PARAMETER;
1797 /* Reserve the memory */
1799 if (use_locks) server_enter_uninterrupted_section( &csVirtual, &sigset );
1801 if ((type & MEM_RESERVE) || !base)
1803 if (type & MEM_WRITE_WATCH) vprot |= VPROT_WRITEWATCH;
1804 status = map_view( &view, base, size, mask, type & MEM_TOP_DOWN, vprot );
1805 if (status == STATUS_SUCCESS) base = view->base;
1807 else /* commit the pages */
1809 if (!(view = VIRTUAL_FindView( base, size ))) status = STATUS_NOT_MAPPED_VIEW;
1810 else if (!VIRTUAL_SetProt( view, base, size, vprot )) status = STATUS_ACCESS_DENIED;
1811 else if (view->mapping && !(view->protect & VPROT_COMMITTED))
1813 SERVER_START_REQ( add_mapping_committed_range )
1815 req->handle = wine_server_obj_handle( view->mapping );
1816 req->offset = (char *)base - (char *)view->base;
1818 wine_server_call( req );
1824 if (use_locks) server_leave_uninterrupted_section( &csVirtual, &sigset );
1826 if (status == STATUS_SUCCESS)
1835 /***********************************************************************
1836 * NtFreeVirtualMemory (NTDLL.@)
1837 * ZwFreeVirtualMemory (NTDLL.@)
1839 NTSTATUS WINAPI NtFreeVirtualMemory( HANDLE process, PVOID *addr_ptr, SIZE_T *size_ptr, ULONG type )
1844 NTSTATUS status = STATUS_SUCCESS;
1845 LPVOID addr = *addr_ptr;
1846 SIZE_T size = *size_ptr;
1848 TRACE("%p %p %08lx %x\n", process, addr, size, type );
1850 if (process != NtCurrentProcess())
1853 apc_result_t result;
1855 memset( &call, 0, sizeof(call) );
1857 call.virtual_free.type = APC_VIRTUAL_FREE;
1858 call.virtual_free.addr = wine_server_client_ptr( addr );
1859 call.virtual_free.size = size;
1860 call.virtual_free.op_type = type;
1861 status = NTDLL_queue_process_apc( process, &call, &result );
1862 if (status != STATUS_SUCCESS) return status;
1864 if (result.virtual_free.status == STATUS_SUCCESS)
1866 *addr_ptr = wine_server_get_ptr( result.virtual_free.addr );
1867 *size_ptr = result.virtual_free.size;
1869 return result.virtual_free.status;
1872 /* Fix the parameters */
1874 size = ROUND_SIZE( addr, size );
1875 base = ROUND_ADDR( addr, page_mask );
1877 /* avoid freeing the DOS area when a broken app passes a NULL pointer */
1878 if (!base) return STATUS_INVALID_PARAMETER;
1880 server_enter_uninterrupted_section( &csVirtual, &sigset );
1882 if (!(view = VIRTUAL_FindView( base, size )) || !(view->protect & VPROT_VALLOC))
1884 status = STATUS_INVALID_PARAMETER;
1886 else if (type == MEM_RELEASE)
1888 /* Free the pages */
1890 if (size || (base != view->base)) status = STATUS_INVALID_PARAMETER;
1893 delete_view( view );
1898 else if (type == MEM_DECOMMIT)
1900 status = decommit_pages( view, base - (char *)view->base, size );
1901 if (status == STATUS_SUCCESS)
1909 WARN("called with wrong free type flags (%08x) !\n", type);
1910 status = STATUS_INVALID_PARAMETER;
1913 server_leave_uninterrupted_section( &csVirtual, &sigset );
1918 /***********************************************************************
1919 * NtProtectVirtualMemory (NTDLL.@)
1920 * ZwProtectVirtualMemory (NTDLL.@)
1922 NTSTATUS WINAPI NtProtectVirtualMemory( HANDLE process, PVOID *addr_ptr, SIZE_T *size_ptr,
1923 ULONG new_prot, ULONG *old_prot )
1927 NTSTATUS status = STATUS_SUCCESS;
1930 unsigned int new_vprot;
1931 SIZE_T size = *size_ptr;
1932 LPVOID addr = *addr_ptr;
1934 TRACE("%p %p %08lx %08x\n", process, addr, size, new_prot );
1936 if (process != NtCurrentProcess())
1939 apc_result_t result;
1941 memset( &call, 0, sizeof(call) );
1943 call.virtual_protect.type = APC_VIRTUAL_PROTECT;
1944 call.virtual_protect.addr = wine_server_client_ptr( addr );
1945 call.virtual_protect.size = size;
1946 call.virtual_protect.prot = new_prot;
1947 status = NTDLL_queue_process_apc( process, &call, &result );
1948 if (status != STATUS_SUCCESS) return status;
1950 if (result.virtual_protect.status == STATUS_SUCCESS)
1952 *addr_ptr = wine_server_get_ptr( result.virtual_protect.addr );
1953 *size_ptr = result.virtual_protect.size;
1954 if (old_prot) *old_prot = result.virtual_protect.prot;
1956 return result.virtual_protect.status;
1959 /* Fix the parameters */
1961 size = ROUND_SIZE( addr, size );
1962 base = ROUND_ADDR( addr, page_mask );
1963 if ((status = get_vprot_flags( new_prot, &new_vprot ))) return status;
1964 new_vprot |= VPROT_COMMITTED;
1966 server_enter_uninterrupted_section( &csVirtual, &sigset );
1968 if (!(view = VIRTUAL_FindView( base, size )))
1970 status = STATUS_INVALID_PARAMETER;
1974 /* Make sure all the pages are committed */
1975 if (get_committed_size( view, base, &vprot ) >= size && (vprot & VPROT_COMMITTED))
1977 if (old_prot) *old_prot = VIRTUAL_GetWin32Prot( vprot );
1978 if (!VIRTUAL_SetProt( view, base, size, new_vprot )) status = STATUS_ACCESS_DENIED;
1980 else status = STATUS_NOT_COMMITTED;
1982 server_leave_uninterrupted_section( &csVirtual, &sigset );
1984 if (status == STATUS_SUCCESS)
1993 /* retrieve state for a free memory area; callback for wine_mmap_enum_reserved_areas */
1994 static int get_free_mem_state_callback( void *start, size_t size, void *arg )
1996 MEMORY_BASIC_INFORMATION *info = arg;
1997 void *end = (char *)start + size;
1999 if ((char *)info->BaseAddress + info->RegionSize < (char *)start) return 0;
2001 if (info->BaseAddress >= end)
2003 if (info->AllocationBase < end) info->AllocationBase = end;
2007 if (info->BaseAddress >= start)
2009 /* it's a real free area */
2010 info->State = MEM_FREE;
2011 info->Protect = PAGE_NOACCESS;
2012 info->AllocationBase = 0;
2013 info->AllocationProtect = 0;
2015 if ((char *)info->BaseAddress + info->RegionSize > (char *)end)
2016 info->RegionSize = (char *)end - (char *)info->BaseAddress;
2018 else /* outside of the reserved area, pretend it's allocated */
2020 info->RegionSize = (char *)start - (char *)info->BaseAddress;
2021 info->State = MEM_RESERVE;
2022 info->Protect = PAGE_NOACCESS;
2023 info->AllocationProtect = PAGE_NOACCESS;
2024 info->Type = MEM_PRIVATE;
2029 #define UNIMPLEMENTED_INFO_CLASS(c) \
2031 FIXME("(process=%p,addr=%p) Unimplemented information class: " #c "\n", process, addr); \
2032 return STATUS_INVALID_INFO_CLASS
2034 /***********************************************************************
2035 * NtQueryVirtualMemory (NTDLL.@)
2036 * ZwQueryVirtualMemory (NTDLL.@)
2038 NTSTATUS WINAPI NtQueryVirtualMemory( HANDLE process, LPCVOID addr,
2039 MEMORY_INFORMATION_CLASS info_class, PVOID buffer,
2040 SIZE_T len, SIZE_T *res_len )
2043 char *base, *alloc_base = 0;
2046 MEMORY_BASIC_INFORMATION *info = buffer;
2049 if (info_class != MemoryBasicInformation)
2053 UNIMPLEMENTED_INFO_CLASS(MemoryWorkingSetList);
2054 UNIMPLEMENTED_INFO_CLASS(MemorySectionName);
2055 UNIMPLEMENTED_INFO_CLASS(MemoryBasicVlmInformation);
2058 FIXME("(%p,%p,info_class=%d,%p,%ld,%p) Unknown information class\n",
2059 process, addr, info_class, buffer, len, res_len);
2060 return STATUS_INVALID_INFO_CLASS;
2064 if (process != NtCurrentProcess())
2068 apc_result_t result;
2070 memset( &call, 0, sizeof(call) );
2072 call.virtual_query.type = APC_VIRTUAL_QUERY;
2073 call.virtual_query.addr = wine_server_client_ptr( addr );
2074 status = NTDLL_queue_process_apc( process, &call, &result );
2075 if (status != STATUS_SUCCESS) return status;
2077 if (result.virtual_query.status == STATUS_SUCCESS)
2079 info->BaseAddress = wine_server_get_ptr( result.virtual_query.base );
2080 info->AllocationBase = wine_server_get_ptr( result.virtual_query.alloc_base );
2081 info->RegionSize = result.virtual_query.size;
2082 info->Protect = result.virtual_query.prot;
2083 info->AllocationProtect = result.virtual_query.alloc_prot;
2084 info->State = (DWORD)result.virtual_query.state << 12;
2085 info->Type = (DWORD)result.virtual_query.alloc_type << 16;
2086 if (info->RegionSize != result.virtual_query.size) /* truncated */
2087 return STATUS_INVALID_PARAMETER; /* FIXME */
2088 if (res_len) *res_len = sizeof(*info);
2090 return result.virtual_query.status;
2093 base = ROUND_ADDR( addr, page_mask );
2095 if (is_beyond_limit( base, 1, working_set_limit )) return STATUS_WORKING_SET_LIMIT_RANGE;
2097 /* Find the view containing the address */
2099 server_enter_uninterrupted_section( &csVirtual, &sigset );
2100 ptr = list_head( &views_list );
2105 size = (char *)working_set_limit - alloc_base;
2109 view = LIST_ENTRY( ptr, struct file_view, entry );
2110 if ((char *)view->base > base)
2112 size = (char *)view->base - alloc_base;
2116 if ((char *)view->base + view->size > base)
2118 alloc_base = view->base;
2122 alloc_base = (char *)view->base + view->size;
2123 ptr = list_next( &views_list, ptr );
2126 /* Fill the info structure */
2128 info->AllocationBase = alloc_base;
2129 info->BaseAddress = base;
2130 info->RegionSize = size - (base - alloc_base);
2134 if (!wine_mmap_enum_reserved_areas( get_free_mem_state_callback, info, 0 ))
2136 /* not in a reserved area at all, pretend it's allocated */
2138 info->State = MEM_RESERVE;
2139 info->Protect = PAGE_NOACCESS;
2140 info->AllocationProtect = PAGE_NOACCESS;
2141 info->Type = MEM_PRIVATE;
2143 info->State = MEM_FREE;
2144 info->Protect = PAGE_NOACCESS;
2145 info->AllocationBase = 0;
2146 info->AllocationProtect = 0;
2154 SIZE_T range_size = get_committed_size( view, base, &vprot );
2156 info->State = (vprot & VPROT_COMMITTED) ? MEM_COMMIT : MEM_RESERVE;
2157 info->Protect = (vprot & VPROT_COMMITTED) ? VIRTUAL_GetWin32Prot( vprot ) : 0;
2158 info->AllocationBase = alloc_base;
2159 info->AllocationProtect = VIRTUAL_GetWin32Prot( view->protect );
2160 if (view->protect & VPROT_IMAGE) info->Type = MEM_IMAGE;
2161 else if (view->protect & VPROT_VALLOC) info->Type = MEM_PRIVATE;
2162 else info->Type = MEM_MAPPED;
2163 for (size = base - alloc_base; size < base + range_size - alloc_base; size += page_size)
2164 if ((view->prot[size >> page_shift] ^ vprot) & ~VPROT_WRITEWATCH) break;
2165 info->RegionSize = size - (base - alloc_base);
2167 server_leave_uninterrupted_section( &csVirtual, &sigset );
2169 if (res_len) *res_len = sizeof(*info);
2170 return STATUS_SUCCESS;
2174 /***********************************************************************
2175 * NtLockVirtualMemory (NTDLL.@)
2176 * ZwLockVirtualMemory (NTDLL.@)
2178 NTSTATUS WINAPI NtLockVirtualMemory( HANDLE process, PVOID *addr, SIZE_T *size, ULONG unknown )
2180 NTSTATUS status = STATUS_SUCCESS;
2182 if (process != NtCurrentProcess())
2185 apc_result_t result;
2187 memset( &call, 0, sizeof(call) );
2189 call.virtual_lock.type = APC_VIRTUAL_LOCK;
2190 call.virtual_lock.addr = wine_server_client_ptr( *addr );
2191 call.virtual_lock.size = *size;
2192 status = NTDLL_queue_process_apc( process, &call, &result );
2193 if (status != STATUS_SUCCESS) return status;
2195 if (result.virtual_lock.status == STATUS_SUCCESS)
2197 *addr = wine_server_get_ptr( result.virtual_lock.addr );
2198 *size = result.virtual_lock.size;
2200 return result.virtual_lock.status;
2203 *size = ROUND_SIZE( *addr, *size );
2204 *addr = ROUND_ADDR( *addr, page_mask );
2206 if (mlock( *addr, *size )) status = STATUS_ACCESS_DENIED;
2211 /***********************************************************************
2212 * NtUnlockVirtualMemory (NTDLL.@)
2213 * ZwUnlockVirtualMemory (NTDLL.@)
2215 NTSTATUS WINAPI NtUnlockVirtualMemory( HANDLE process, PVOID *addr, SIZE_T *size, ULONG unknown )
2217 NTSTATUS status = STATUS_SUCCESS;
2219 if (process != NtCurrentProcess())
2222 apc_result_t result;
2224 memset( &call, 0, sizeof(call) );
2226 call.virtual_unlock.type = APC_VIRTUAL_UNLOCK;
2227 call.virtual_unlock.addr = wine_server_client_ptr( *addr );
2228 call.virtual_unlock.size = *size;
2229 status = NTDLL_queue_process_apc( process, &call, &result );
2230 if (status != STATUS_SUCCESS) return status;
2232 if (result.virtual_unlock.status == STATUS_SUCCESS)
2234 *addr = wine_server_get_ptr( result.virtual_unlock.addr );
2235 *size = result.virtual_unlock.size;
2237 return result.virtual_unlock.status;
2240 *size = ROUND_SIZE( *addr, *size );
2241 *addr = ROUND_ADDR( *addr, page_mask );
2243 if (munlock( *addr, *size )) status = STATUS_ACCESS_DENIED;
2248 /***********************************************************************
2249 * NtCreateSection (NTDLL.@)
2250 * ZwCreateSection (NTDLL.@)
2252 NTSTATUS WINAPI NtCreateSection( HANDLE *handle, ACCESS_MASK access, const OBJECT_ATTRIBUTES *attr,
2253 const LARGE_INTEGER *size, ULONG protect,
2254 ULONG sec_flags, HANDLE file )
2258 DWORD len = (attr && attr->ObjectName) ? attr->ObjectName->Length : 0;
2259 struct security_descriptor *sd = NULL;
2260 struct object_attributes objattr;
2262 /* Check parameters */
2264 if (len > MAX_PATH*sizeof(WCHAR)) return STATUS_NAME_TOO_LONG;
2266 if ((ret = get_vprot_flags( protect, &vprot ))) return ret;
2268 objattr.rootdir = wine_server_obj_handle( attr ? attr->RootDirectory : 0 );
2270 objattr.name_len = len;
2273 ret = NTDLL_create_struct_sd( attr->SecurityDescriptor, &sd, &objattr.sd_len );
2274 if (ret != STATUS_SUCCESS) return ret;
2277 if (!(sec_flags & SEC_RESERVE)) vprot |= VPROT_COMMITTED;
2278 if (sec_flags & SEC_NOCACHE) vprot |= VPROT_NOCACHE;
2279 if (sec_flags & SEC_IMAGE) vprot |= VPROT_IMAGE;
2281 /* Create the server object */
2283 SERVER_START_REQ( create_mapping )
2285 req->access = access;
2286 req->attributes = (attr) ? attr->Attributes : 0;
2287 req->file_handle = wine_server_obj_handle( file );
2288 req->size = size ? size->QuadPart : 0;
2289 req->protect = vprot;
2290 wine_server_add_data( req, &objattr, sizeof(objattr) );
2291 if (objattr.sd_len) wine_server_add_data( req, sd, objattr.sd_len );
2292 if (len) wine_server_add_data( req, attr->ObjectName->Buffer, len );
2293 ret = wine_server_call( req );
2294 *handle = wine_server_ptr_handle( reply->handle );
2298 NTDLL_free_struct_sd( sd );
2304 /***********************************************************************
2305 * NtOpenSection (NTDLL.@)
2306 * ZwOpenSection (NTDLL.@)
2308 NTSTATUS WINAPI NtOpenSection( HANDLE *handle, ACCESS_MASK access, const OBJECT_ATTRIBUTES *attr )
2311 DWORD len = attr->ObjectName->Length;
2313 if (len > MAX_PATH*sizeof(WCHAR)) return STATUS_NAME_TOO_LONG;
2315 SERVER_START_REQ( open_mapping )
2317 req->access = access;
2318 req->attributes = attr->Attributes;
2319 req->rootdir = wine_server_obj_handle( attr->RootDirectory );
2320 wine_server_add_data( req, attr->ObjectName->Buffer, len );
2321 if (!(ret = wine_server_call( req ))) *handle = wine_server_ptr_handle( reply->handle );
2328 /***********************************************************************
2329 * NtMapViewOfSection (NTDLL.@)
2330 * ZwMapViewOfSection (NTDLL.@)
2332 NTSTATUS WINAPI NtMapViewOfSection( HANDLE handle, HANDLE process, PVOID *addr_ptr, ULONG zero_bits,
2333 SIZE_T commit_size, const LARGE_INTEGER *offset_ptr, SIZE_T *size_ptr,
2334 SECTION_INHERIT inherit, ULONG alloc_type, ULONG protect )
2337 mem_size_t full_size;
2339 SIZE_T size, mask = get_mask( zero_bits );
2340 int unix_handle = -1, needs_close;
2341 unsigned int map_vprot, vprot;
2343 struct file_view *view;
2345 HANDLE dup_mapping, shared_file;
2346 LARGE_INTEGER offset;
2349 offset.QuadPart = offset_ptr ? offset_ptr->QuadPart : 0;
2351 TRACE("handle=%p process=%p addr=%p off=%x%08x size=%lx access=%x\n",
2352 handle, process, *addr_ptr, offset.u.HighPart, offset.u.LowPart, *size_ptr, protect );
2354 /* Check parameters */
2356 if ((offset.u.LowPart & mask) || (*addr_ptr && ((UINT_PTR)*addr_ptr & mask)))
2357 return STATUS_INVALID_PARAMETER;
2364 case PAGE_READWRITE:
2365 case PAGE_EXECUTE_READWRITE:
2366 access = SECTION_MAP_WRITE;
2369 case PAGE_WRITECOPY:
2371 case PAGE_EXECUTE_READ:
2372 case PAGE_EXECUTE_WRITECOPY:
2373 access = SECTION_MAP_READ;
2376 return STATUS_INVALID_PARAMETER;
2379 if (process != NtCurrentProcess())
2382 apc_result_t result;
2384 memset( &call, 0, sizeof(call) );
2386 call.map_view.type = APC_MAP_VIEW;
2387 call.map_view.handle = wine_server_obj_handle( handle );
2388 call.map_view.addr = wine_server_client_ptr( *addr_ptr );
2389 call.map_view.size = *size_ptr;
2390 call.map_view.offset = offset.QuadPart;
2391 call.map_view.zero_bits = zero_bits;
2392 call.map_view.alloc_type = alloc_type;
2393 call.map_view.prot = protect;
2394 res = NTDLL_queue_process_apc( process, &call, &result );
2395 if (res != STATUS_SUCCESS) return res;
2397 if (result.map_view.status == STATUS_SUCCESS)
2399 *addr_ptr = wine_server_get_ptr( result.map_view.addr );
2400 *size_ptr = result.map_view.size;
2402 return result.map_view.status;
2405 SERVER_START_REQ( get_mapping_info )
2407 req->handle = wine_server_obj_handle( handle );
2408 req->access = access;
2409 res = wine_server_call( req );
2410 map_vprot = reply->protect;
2411 base = wine_server_get_ptr( reply->base );
2412 full_size = reply->size;
2413 header_size = reply->header_size;
2414 dup_mapping = wine_server_ptr_handle( reply->mapping );
2415 shared_file = wine_server_ptr_handle( reply->shared_file );
2416 if ((ULONG_PTR)base != reply->base) base = NULL;
2419 if (res) return res;
2421 if ((res = server_get_unix_fd( handle, 0, &unix_handle, &needs_close, NULL, NULL ))) goto done;
2423 if (map_vprot & VPROT_IMAGE)
2426 if (size != full_size) /* truncated */
2428 WARN( "Modules larger than 4Gb (%s) not supported\n", wine_dbgstr_longlong(full_size) );
2429 res = STATUS_INVALID_PARAMETER;
2434 int shared_fd, shared_needs_close;
2436 if ((res = server_get_unix_fd( shared_file, FILE_READ_DATA|FILE_WRITE_DATA,
2437 &shared_fd, &shared_needs_close, NULL, NULL ))) goto done;
2438 res = map_image( handle, unix_handle, base, size, mask, header_size,
2439 shared_fd, dup_mapping, addr_ptr );
2440 if (shared_needs_close) close( shared_fd );
2441 NtClose( shared_file );
2445 res = map_image( handle, unix_handle, base, size, mask, header_size,
2446 -1, dup_mapping, addr_ptr );
2448 if (needs_close) close( unix_handle );
2449 if (!res) *size_ptr = size;
2453 res = STATUS_INVALID_PARAMETER;
2454 if (offset.QuadPart >= full_size) goto done;
2457 if (*size_ptr > full_size - offset.QuadPart) goto done;
2458 size = ROUND_SIZE( offset.u.LowPart, *size_ptr );
2459 if (size < *size_ptr) goto done; /* wrap-around */
2463 size = full_size - offset.QuadPart;
2464 if (size != full_size - offset.QuadPart) /* truncated */
2466 WARN( "Files larger than 4Gb (%s) not supported on this platform\n",
2467 wine_dbgstr_longlong(full_size) );
2472 /* Reserve a properly aligned area */
2474 server_enter_uninterrupted_section( &csVirtual, &sigset );
2476 get_vprot_flags( protect, &vprot );
2477 vprot |= (map_vprot & VPROT_COMMITTED);
2478 res = map_view( &view, *addr_ptr, size, mask, FALSE, vprot );
2481 server_leave_uninterrupted_section( &csVirtual, &sigset );
2487 TRACE("handle=%p size=%lx offset=%x%08x\n",
2488 handle, size, offset.u.HighPart, offset.u.LowPart );
2490 res = map_file_into_view( view, unix_handle, 0, size, offset.QuadPart, vprot, !dup_mapping );
2491 if (res == STATUS_SUCCESS)
2493 *addr_ptr = view->base;
2495 view->mapping = dup_mapping;
2496 dup_mapping = 0; /* don't close it */
2500 ERR( "map_file_into_view %p %lx %x%08x failed\n",
2501 view->base, size, offset.u.HighPart, offset.u.LowPart );
2502 delete_view( view );
2505 server_leave_uninterrupted_section( &csVirtual, &sigset );
2508 if (dup_mapping) NtClose( dup_mapping );
2509 if (needs_close) close( unix_handle );
2514 /***********************************************************************
2515 * NtUnmapViewOfSection (NTDLL.@)
2516 * ZwUnmapViewOfSection (NTDLL.@)
2518 NTSTATUS WINAPI NtUnmapViewOfSection( HANDLE process, PVOID addr )
2521 NTSTATUS status = STATUS_INVALID_PARAMETER;
2523 void *base = ROUND_ADDR( addr, page_mask );
2525 if (process != NtCurrentProcess())
2528 apc_result_t result;
2530 memset( &call, 0, sizeof(call) );
2532 call.unmap_view.type = APC_UNMAP_VIEW;
2533 call.unmap_view.addr = wine_server_client_ptr( addr );
2534 status = NTDLL_queue_process_apc( process, &call, &result );
2535 if (status == STATUS_SUCCESS) status = result.unmap_view.status;
2539 server_enter_uninterrupted_section( &csVirtual, &sigset );
2540 if ((view = VIRTUAL_FindView( base, 0 )) && (base == view->base))
2542 delete_view( view );
2543 status = STATUS_SUCCESS;
2545 server_leave_uninterrupted_section( &csVirtual, &sigset );
2550 /***********************************************************************
2551 * NtFlushVirtualMemory (NTDLL.@)
2552 * ZwFlushVirtualMemory (NTDLL.@)
2554 NTSTATUS WINAPI NtFlushVirtualMemory( HANDLE process, LPCVOID *addr_ptr,
2555 SIZE_T *size_ptr, ULONG unknown )
2558 NTSTATUS status = STATUS_SUCCESS;
2560 void *addr = ROUND_ADDR( *addr_ptr, page_mask );
2562 if (process != NtCurrentProcess())
2565 apc_result_t result;
2567 memset( &call, 0, sizeof(call) );
2569 call.virtual_flush.type = APC_VIRTUAL_FLUSH;
2570 call.virtual_flush.addr = wine_server_client_ptr( addr );
2571 call.virtual_flush.size = *size_ptr;
2572 status = NTDLL_queue_process_apc( process, &call, &result );
2573 if (status != STATUS_SUCCESS) return status;
2575 if (result.virtual_flush.status == STATUS_SUCCESS)
2577 *addr_ptr = wine_server_get_ptr( result.virtual_flush.addr );
2578 *size_ptr = result.virtual_flush.size;
2580 return result.virtual_flush.status;
2583 server_enter_uninterrupted_section( &csVirtual, &sigset );
2584 if (!(view = VIRTUAL_FindView( addr, *size_ptr ))) status = STATUS_INVALID_PARAMETER;
2587 if (!*size_ptr) *size_ptr = view->size;
2589 if (msync( addr, *size_ptr, MS_SYNC )) status = STATUS_NOT_MAPPED_DATA;
2591 server_leave_uninterrupted_section( &csVirtual, &sigset );
2596 /***********************************************************************
2597 * NtGetWriteWatch (NTDLL.@)
2598 * ZwGetWriteWatch (NTDLL.@)
2600 NTSTATUS WINAPI NtGetWriteWatch( HANDLE process, ULONG flags, PVOID base, SIZE_T size, PVOID *addresses,
2601 ULONG_PTR *count, ULONG *granularity )
2603 struct file_view *view;
2604 NTSTATUS status = STATUS_SUCCESS;
2607 size = ROUND_SIZE( base, size );
2608 base = ROUND_ADDR( base, page_mask );
2610 if (!count || !granularity) return STATUS_ACCESS_VIOLATION;
2611 if (!*count || !size) return STATUS_INVALID_PARAMETER;
2612 if (flags & ~WRITE_WATCH_FLAG_RESET) return STATUS_INVALID_PARAMETER;
2614 if (!addresses) return STATUS_ACCESS_VIOLATION;
2616 TRACE( "%p %x %p-%p %p %lu\n", process, flags, base, (char *)base + size,
2617 addresses, count ? *count : 0 );
2619 server_enter_uninterrupted_section( &csVirtual, &sigset );
2621 if ((view = VIRTUAL_FindView( base, size )) && (view->protect & VPROT_WRITEWATCH))
2625 char *end = addr + size;
2627 while (pos < *count && addr < end)
2629 BYTE prot = view->prot[(addr - (char *)view->base) >> page_shift];
2630 if (!(prot & VPROT_WRITEWATCH)) addresses[pos++] = addr;
2633 if (flags & WRITE_WATCH_FLAG_RESET) reset_write_watches( view, base, addr - (char *)base );
2635 *granularity = page_size;
2637 else status = STATUS_INVALID_PARAMETER;
2639 server_leave_uninterrupted_section( &csVirtual, &sigset );
2644 /***********************************************************************
2645 * NtResetWriteWatch (NTDLL.@)
2646 * ZwResetWriteWatch (NTDLL.@)
2648 NTSTATUS WINAPI NtResetWriteWatch( HANDLE process, PVOID base, SIZE_T size )
2650 struct file_view *view;
2651 NTSTATUS status = STATUS_SUCCESS;
2654 size = ROUND_SIZE( base, size );
2655 base = ROUND_ADDR( base, page_mask );
2657 TRACE( "%p %p-%p\n", process, base, (char *)base + size );
2659 if (!size) return STATUS_INVALID_PARAMETER;
2661 server_enter_uninterrupted_section( &csVirtual, &sigset );
2663 if ((view = VIRTUAL_FindView( base, size )) && (view->protect & VPROT_WRITEWATCH))
2664 reset_write_watches( view, base, size );
2666 status = STATUS_INVALID_PARAMETER;
2668 server_leave_uninterrupted_section( &csVirtual, &sigset );
2673 /***********************************************************************
2674 * NtReadVirtualMemory (NTDLL.@)
2675 * ZwReadVirtualMemory (NTDLL.@)
2677 NTSTATUS WINAPI NtReadVirtualMemory( HANDLE process, const void *addr, void *buffer,
2678 SIZE_T size, SIZE_T *bytes_read )
2682 if (virtual_check_buffer_for_write( buffer, size ))
2684 SERVER_START_REQ( read_process_memory )
2686 req->handle = wine_server_obj_handle( process );
2687 req->addr = wine_server_client_ptr( addr );
2688 wine_server_set_reply( req, buffer, size );
2689 if ((status = wine_server_call( req ))) size = 0;
2695 status = STATUS_ACCESS_VIOLATION;
2698 if (bytes_read) *bytes_read = size;
2703 /***********************************************************************
2704 * NtWriteVirtualMemory (NTDLL.@)
2705 * ZwWriteVirtualMemory (NTDLL.@)
2707 NTSTATUS WINAPI NtWriteVirtualMemory( HANDLE process, void *addr, const void *buffer,
2708 SIZE_T size, SIZE_T *bytes_written )
2712 if (virtual_check_buffer_for_read( buffer, size ))
2714 SERVER_START_REQ( write_process_memory )
2716 req->handle = wine_server_obj_handle( process );
2717 req->addr = wine_server_client_ptr( addr );
2718 wine_server_add_data( req, buffer, size );
2719 if ((status = wine_server_call( req ))) size = 0;
2725 status = STATUS_PARTIAL_COPY;
2728 if (bytes_written) *bytes_written = size;
2733 /***********************************************************************
2734 * NtAreMappedFilesTheSame (NTDLL.@)
2735 * ZwAreMappedFilesTheSame (NTDLL.@)
2737 NTSTATUS WINAPI NtAreMappedFilesTheSame(PVOID addr1, PVOID addr2)
2739 TRACE("%p %p\n", addr1, addr2);
2741 return STATUS_NOT_SAME_DEVICE;