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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 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_MMAN_H
42 #define NONAMELESSUNION
43 #define NONAMELESSSTRUCT
45 #define WIN32_NO_STATUS
49 #include "wine/library.h"
50 #include "wine/server.h"
51 #include "wine/list.h"
52 #include "wine/debug.h"
53 #include "ntdll_misc.h"
55 WINE_DEFAULT_DEBUG_CHANNEL(virtual);
56 WINE_DECLARE_DEBUG_CHANNEL(module);
63 #define MAP_NORESERVE 0
67 typedef struct file_view
69 struct list entry; /* Entry in global view list */
70 void *base; /* Base address */
71 size_t size; /* Size in bytes */
72 HANDLE mapping; /* Handle to the file mapping */
73 BYTE flags; /* Allocation flags (VFLAG_*) */
74 BYTE protect; /* Protection for all pages at allocation time */
75 BYTE prot[1]; /* Protection byte for each page */
79 #define VFLAG_SYSTEM 0x01 /* system view (underlying mmap not under our control) */
80 #define VFLAG_VALLOC 0x02 /* allocated by VirtualAlloc */
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 /* These are always the same on an i386, and it will be faster this way */
116 # define page_mask 0xfff
117 # define page_shift 12
118 # define page_size 0x1000
119 /* Note: these are Windows limits, you cannot change them. */
120 # define ADDRESS_SPACE_LIMIT ((void *)0xc0000000) /* top of the total available address space */
121 # define USER_SPACE_LIMIT ((void *)0x7fff0000) /* top of the user address space */
123 static UINT page_shift;
124 static UINT page_size;
125 static UINT_PTR page_mask;
126 # define ADDRESS_SPACE_LIMIT 0 /* no limit needed on other platforms */
127 # define USER_SPACE_LIMIT 0 /* no limit needed on other platforms */
128 #endif /* __i386__ */
129 static const UINT_PTR granularity_mask = 0xffff; /* Allocation granularity (usually 64k) */
131 #define ROUND_ADDR(addr,mask) \
132 ((void *)((UINT_PTR)(addr) & ~(UINT_PTR)(mask)))
134 #define ROUND_SIZE(addr,size) \
135 (((UINT)(size) + ((UINT_PTR)(addr) & page_mask) + page_mask) & ~page_mask)
137 #define VIRTUAL_DEBUG_DUMP_VIEW(view) \
138 do { if (TRACE_ON(virtual)) VIRTUAL_DumpView(view); } while (0)
140 static void *user_space_limit = USER_SPACE_LIMIT;
143 /***********************************************************************
146 static const char *VIRTUAL_GetProtStr( BYTE prot )
148 static char buffer[6];
149 buffer[0] = (prot & VPROT_COMMITTED) ? 'c' : '-';
150 buffer[1] = (prot & VPROT_GUARD) ? 'g' : '-';
151 buffer[2] = (prot & VPROT_READ) ? 'r' : '-';
152 buffer[3] = (prot & VPROT_WRITECOPY) ? 'W' : ((prot & VPROT_WRITE) ? 'w' : '-');
153 buffer[4] = (prot & VPROT_EXEC) ? 'x' : '-';
159 /***********************************************************************
162 static void VIRTUAL_DumpView( FILE_VIEW *view )
165 char *addr = view->base;
166 BYTE prot = view->prot[0];
168 TRACE( "View: %p - %p", addr, addr + view->size - 1 );
169 if (view->flags & VFLAG_SYSTEM)
170 TRACE( " (system)\n" );
171 else if (view->flags & VFLAG_VALLOC)
172 TRACE( " (valloc)\n" );
173 else if (view->mapping)
174 TRACE( " %p\n", view->mapping );
176 TRACE( " (anonymous)\n");
178 for (count = i = 1; i < view->size >> page_shift; i++, count++)
180 if (view->prot[i] == prot) continue;
181 TRACE( " %p - %p %s\n",
182 addr, addr + (count << page_shift) - 1, VIRTUAL_GetProtStr(prot) );
183 addr += (count << page_shift);
184 prot = view->prot[i];
188 TRACE( " %p - %p %s\n",
189 addr, addr + (count << page_shift) - 1, VIRTUAL_GetProtStr(prot) );
193 /***********************************************************************
196 void VIRTUAL_Dump(void)
198 struct file_view *view;
200 TRACE( "Dump of all virtual memory views:\n" );
201 RtlEnterCriticalSection(&csVirtual);
202 LIST_FOR_EACH_ENTRY( view, &views_list, FILE_VIEW, entry )
204 VIRTUAL_DumpView( view );
206 RtlLeaveCriticalSection(&csVirtual);
210 /***********************************************************************
213 * Find the view containing a given address. The csVirtual section must be held by caller.
222 static struct file_view *VIRTUAL_FindView( const void *addr )
224 struct file_view *view;
226 LIST_FOR_EACH_ENTRY( view, &views_list, struct file_view, entry )
228 if (view->base > addr) break;
229 if ((const char*)view->base + view->size > (const char*)addr) return view;
235 /***********************************************************************
238 * Find the first view overlapping at least part of the specified range.
239 * The csVirtual section must be held by caller.
241 static struct file_view *find_view_range( const void *addr, size_t size )
243 struct file_view *view;
245 LIST_FOR_EACH_ENTRY( view, &views_list, struct file_view, entry )
247 if ((const char *)view->base >= (const char *)addr + size) break;
248 if ((const char *)view->base + view->size > (const char *)addr) return view;
254 /***********************************************************************
257 * Add a reserved area to the list maintained by libwine.
258 * The csVirtual section must be held by caller.
260 static void add_reserved_area( void *addr, size_t size )
262 TRACE( "adding %p-%p\n", addr, (char *)addr + size );
264 if (addr < user_space_limit)
266 /* unmap the part of the area that is below the limit */
267 assert( (char *)addr + size > (char *)user_space_limit );
268 munmap( addr, (char *)user_space_limit - (char *)addr );
269 size -= (char *)user_space_limit - (char *)addr;
270 addr = user_space_limit;
272 /* blow away existing mappings */
273 wine_anon_mmap( addr, size, PROT_NONE, MAP_NORESERVE | MAP_FIXED );
274 wine_mmap_add_reserved_area( addr, size );
278 /***********************************************************************
279 * remove_reserved_area
281 * Remove a reserved area from the list maintained by libwine.
282 * The csVirtual section must be held by caller.
284 static void remove_reserved_area( void *addr, size_t size )
286 struct file_view *view;
288 LIST_FOR_EACH_ENTRY( view, &views_list, struct file_view, entry )
290 if ((char *)view->base >= (char *)addr + size) break;
291 if ((char *)view->base + view->size <= (char *)addr) continue;
292 /* now we have an overlapping view */
293 if (view->base > addr)
295 wine_mmap_remove_reserved_area( addr, (char *)view->base - (char *)addr, TRUE );
296 size -= (char *)view->base - (char *)addr;
299 if ((char *)view->base + view->size >= (char *)addr + size)
301 /* view covers all the remaining area */
302 wine_mmap_remove_reserved_area( addr, size, FALSE );
306 else /* view covers only part of the area */
308 wine_mmap_remove_reserved_area( addr, (char *)view->base + view->size - (char *)addr, FALSE );
309 size -= (char *)view->base + view->size - (char *)addr;
310 addr = (char *)view->base + view->size;
313 /* remove remaining space */
314 if (size) wine_mmap_remove_reserved_area( addr, size, TRUE );
318 /***********************************************************************
321 * Check if an address range goes beyond a given limit.
323 static inline int is_beyond_limit( void *addr, size_t size, void *limit )
325 return (limit && (addr >= limit || (char *)addr + size > (char *)limit));
329 /***********************************************************************
332 * Unmap an area, or simply replace it by an empty mapping if it is
333 * in a reserved area. The csVirtual section must be held by caller.
335 static inline void unmap_area( void *addr, size_t size )
337 if (wine_mmap_is_in_reserved_area( addr, size ))
338 wine_anon_mmap( addr, size, PROT_NONE, MAP_NORESERVE | MAP_FIXED );
339 else if (is_beyond_limit( addr, size, user_space_limit ))
340 add_reserved_area( addr, size );
342 munmap( addr, size );
346 /***********************************************************************
349 * Deletes a view. The csVirtual section must be held by caller.
351 static void delete_view( struct file_view *view ) /* [in] View */
353 if (!(view->flags & VFLAG_SYSTEM)) unmap_area( view->base, view->size );
354 list_remove( &view->entry );
355 if (view->mapping) NtClose( view->mapping );
360 /***********************************************************************
363 * Create a view. The csVirtual section must be held by caller.
365 static NTSTATUS create_view( struct file_view **view_ret, void *base, size_t size, BYTE vprot )
367 struct file_view *view;
370 assert( !((UINT_PTR)base & page_mask) );
371 assert( !(size & page_mask) );
373 /* Create the view structure */
375 if (!(view = malloc( sizeof(*view) + (size >> page_shift) - 1 ))) return STATUS_NO_MEMORY;
381 view->protect = vprot;
382 memset( view->prot, vprot & ~VPROT_IMAGE, size >> page_shift );
384 /* Insert it in the linked list */
386 LIST_FOR_EACH( ptr, &views_list )
388 struct file_view *next = LIST_ENTRY( ptr, struct file_view, entry );
389 if (next->base > base) break;
391 list_add_before( ptr, &view->entry );
393 /* Check for overlapping views. This can happen if the previous view
394 * was a system view that got unmapped behind our back. In that case
395 * we recover by simply deleting it. */
397 if ((ptr = list_prev( &views_list, &view->entry )) != NULL)
399 struct file_view *prev = LIST_ENTRY( ptr, struct file_view, entry );
400 if ((char *)prev->base + prev->size > (char *)base)
402 TRACE( "overlapping prev view %p-%p for %p-%p\n",
403 prev->base, (char *)prev->base + prev->size,
404 base, (char *)base + view->size );
405 assert( prev->flags & VFLAG_SYSTEM );
409 if ((ptr = list_next( &views_list, &view->entry )) != NULL)
411 struct file_view *next = LIST_ENTRY( ptr, struct file_view, entry );
412 if ((char *)base + view->size > (char *)next->base)
414 TRACE( "overlapping next view %p-%p for %p-%p\n",
415 next->base, (char *)next->base + next->size,
416 base, (char *)base + view->size );
417 assert( next->flags & VFLAG_SYSTEM );
423 VIRTUAL_DEBUG_DUMP_VIEW( view );
424 return STATUS_SUCCESS;
428 /***********************************************************************
429 * VIRTUAL_GetUnixProt
431 * Convert page protections to protection for mmap/mprotect.
433 static int VIRTUAL_GetUnixProt( BYTE vprot )
436 if ((vprot & VPROT_COMMITTED) && !(vprot & VPROT_GUARD))
438 if (vprot & VPROT_READ) prot |= PROT_READ;
439 if (vprot & VPROT_WRITE) prot |= PROT_WRITE;
440 if (vprot & VPROT_WRITECOPY) prot |= PROT_WRITE;
441 if (vprot & VPROT_EXEC) prot |= PROT_EXEC;
447 /***********************************************************************
448 * VIRTUAL_GetWin32Prot
450 * Convert page protections to Win32 flags.
452 static DWORD VIRTUAL_GetWin32Prot( BYTE vprot )
454 DWORD ret = VIRTUAL_Win32Flags[vprot & 0x0f];
455 if (vprot & VPROT_NOCACHE) ret |= PAGE_NOCACHE;
456 if (vprot & VPROT_GUARD) ret |= PAGE_GUARD;
461 /***********************************************************************
464 * Build page protections from Win32 flags.
467 * protect [I] Win32 protection flags
470 * Value of page protection flags
472 static BYTE VIRTUAL_GetProt( DWORD protect )
476 switch(protect & 0xff)
482 vprot = VPROT_READ | VPROT_WRITE;
485 /* MSDN CreateFileMapping() states that if PAGE_WRITECOPY is given,
486 * that the hFile must have been opened with GENERIC_READ and
487 * GENERIC_WRITE access. This is WRONG as tests show that you
488 * only need GENERIC_READ access (at least for Win9x,
489 * FIXME: what about NT?). Thus, we don't put VPROT_WRITE in
490 * PAGE_WRITECOPY and PAGE_EXECUTE_WRITECOPY.
492 vprot = VPROT_READ | VPROT_WRITECOPY;
497 case PAGE_EXECUTE_READ:
498 vprot = VPROT_EXEC | VPROT_READ;
500 case PAGE_EXECUTE_READWRITE:
501 vprot = VPROT_EXEC | VPROT_READ | VPROT_WRITE;
503 case PAGE_EXECUTE_WRITECOPY:
504 /* See comment for PAGE_WRITECOPY above */
505 vprot = VPROT_EXEC | VPROT_READ | VPROT_WRITECOPY;
512 if (protect & PAGE_GUARD) vprot |= VPROT_GUARD;
513 if (protect & PAGE_NOCACHE) vprot |= VPROT_NOCACHE;
518 /***********************************************************************
521 * Change the protection of a range of pages.
527 static BOOL VIRTUAL_SetProt( FILE_VIEW *view, /* [in] Pointer to view */
528 void *base, /* [in] Starting address */
529 size_t size, /* [in] Size in bytes */
530 BYTE vprot ) /* [in] Protections to use */
533 base, (char *)base + size - 1, VIRTUAL_GetProtStr( vprot ) );
535 if (mprotect( base, size, VIRTUAL_GetUnixProt(vprot) ))
536 return FALSE; /* FIXME: last error */
538 memset( view->prot + (((char *)base - (char *)view->base) >> page_shift),
539 vprot, size >> page_shift );
540 VIRTUAL_DEBUG_DUMP_VIEW( view );
545 /***********************************************************************
548 * Release the extra memory while keeping the range starting on the granularity boundary.
550 static inline void *unmap_extra_space( void *ptr, size_t total_size, size_t wanted_size, size_t mask )
552 if ((ULONG_PTR)ptr & mask)
554 size_t extra = mask + 1 - ((ULONG_PTR)ptr & mask);
555 munmap( ptr, extra );
556 ptr = (char *)ptr + extra;
559 if (total_size > wanted_size)
560 munmap( (char *)ptr + wanted_size, total_size - wanted_size );
565 /***********************************************************************
568 * Create a view and mmap the corresponding memory area.
569 * The csVirtual section must be held by caller.
571 static NTSTATUS map_view( struct file_view **view_ret, void *base, size_t size, BYTE vprot )
578 if (is_beyond_limit( base, size, ADDRESS_SPACE_LIMIT ))
579 return STATUS_WORKING_SET_LIMIT_RANGE;
581 switch (wine_mmap_is_in_reserved_area( base, size ))
583 case -1: /* partially in a reserved area */
584 return STATUS_CONFLICTING_ADDRESSES;
586 case 0: /* not in a reserved area, do a normal allocation */
587 if ((ptr = wine_anon_mmap( base, size, VIRTUAL_GetUnixProt(vprot), 0 )) == (void *)-1)
589 if (errno == ENOMEM) return STATUS_NO_MEMORY;
590 return STATUS_INVALID_PARAMETER;
594 /* We couldn't get the address we wanted */
595 if (is_beyond_limit( ptr, size, user_space_limit )) add_reserved_area( ptr, size );
596 else munmap( ptr, size );
597 return STATUS_CONFLICTING_ADDRESSES;
602 case 1: /* in a reserved area, make sure the address is available */
603 if (find_view_range( base, size )) return STATUS_CONFLICTING_ADDRESSES;
604 /* replace the reserved area by our mapping */
605 if ((ptr = wine_anon_mmap( base, size, VIRTUAL_GetUnixProt(vprot), MAP_FIXED )) != base)
606 return STATUS_INVALID_PARAMETER;
612 size_t view_size = size + granularity_mask + 1;
616 if ((ptr = wine_anon_mmap( NULL, view_size, VIRTUAL_GetUnixProt(vprot), 0 )) == (void *)-1)
618 if (errno == ENOMEM) return STATUS_NO_MEMORY;
619 return STATUS_INVALID_PARAMETER;
621 /* if we got something beyond the user limit, unmap it and retry */
622 if (is_beyond_limit( ptr, view_size, user_space_limit )) add_reserved_area( ptr, view_size );
625 ptr = unmap_extra_space( ptr, view_size, size, granularity_mask );
628 status = create_view( view_ret, ptr, size, vprot );
629 if (status != STATUS_SUCCESS) unmap_area( ptr, size );
634 /***********************************************************************
637 * Linux kernels before 2.4.x can support non page-aligned offsets, as
638 * long as the offset is aligned to the filesystem block size. This is
639 * a big performance gain so we want to take advantage of it.
641 * However, when we use 64-bit file support this doesn't work because
642 * glibc rejects unaligned offsets. Also glibc 2.1.3 mmap64 is broken
643 * in that it rounds unaligned offsets down to a page boundary. For
644 * these reasons we do a direct system call here.
646 static void *unaligned_mmap( void *addr, size_t length, unsigned int prot,
647 unsigned int flags, int fd, off_t offset )
649 #if defined(linux) && defined(__i386__) && defined(__GNUC__)
650 if (!(offset >> 32) && (offset & page_mask))
665 args.length = length;
669 args.offset = offset;
671 __asm__ __volatile__("push %%ebx\n\t"
676 : "0" (90), /* SYS_mmap */
679 if (ret < 0 && ret > -4096)
687 return mmap( addr, length, prot, flags, fd, offset );
691 /***********************************************************************
694 * Wrapper for mmap() to map a file into a view, falling back to read if mmap fails.
695 * The csVirtual section must be held by caller.
697 static NTSTATUS map_file_into_view( struct file_view *view, int fd, size_t start, size_t size,
698 off_t offset, BYTE vprot, BOOL removable )
701 int prot = VIRTUAL_GetUnixProt( vprot );
702 BOOL shared_write = (vprot & VPROT_WRITE) != 0;
704 assert( start < view->size );
705 assert( start + size <= view->size );
707 /* only try mmap if media is not removable (or if we require write access) */
708 if (!removable || shared_write)
710 int flags = MAP_FIXED | (shared_write ? MAP_SHARED : MAP_PRIVATE);
712 if (unaligned_mmap( (char *)view->base + start, size, prot, flags, fd, offset ) != (void *)-1)
715 /* mmap() failed; if this is because the file offset is not */
716 /* page-aligned (EINVAL), or because the underlying filesystem */
717 /* does not support mmap() (ENOEXEC,ENODEV), we do it by hand. */
718 if ((errno != ENOEXEC) && (errno != EINVAL) && (errno != ENODEV)) return FILE_GetNtStatus();
719 if (shared_write) return FILE_GetNtStatus(); /* we cannot fake shared write mappings */
722 /* Reserve the memory with an anonymous mmap */
723 ptr = wine_anon_mmap( (char *)view->base + start, size, PROT_READ | PROT_WRITE, MAP_FIXED );
724 if (ptr == (void *)-1) return FILE_GetNtStatus();
725 /* Now read in the file */
726 pread( fd, ptr, size, offset );
727 if (prot != (PROT_READ|PROT_WRITE)) mprotect( ptr, size, prot ); /* Set the right protection */
729 memset( view->prot + (start >> page_shift), vprot, size >> page_shift );
730 return STATUS_SUCCESS;
734 /***********************************************************************
737 * Decommit some pages of a given view.
738 * The csVirtual section must be held by caller.
740 static NTSTATUS decommit_pages( struct file_view *view, size_t start, size_t size )
742 if (wine_anon_mmap( (char *)view->base + start, size, PROT_NONE, MAP_FIXED ) != (void *)-1)
744 BYTE *p = view->prot + (start >> page_shift);
746 while (size--) *p++ &= ~VPROT_COMMITTED;
747 return STATUS_SUCCESS;
749 return FILE_GetNtStatus();
753 /***********************************************************************
756 * Apply the relocations to a mapped PE image
758 static int do_relocations( char *base, const IMAGE_DATA_DIRECTORY *dir,
759 int delta, SIZE_T total_size )
761 IMAGE_BASE_RELOCATION *rel;
763 TRACE_(module)( "relocating from %p-%p to %p-%p\n",
764 base - delta, base - delta + total_size, base, base + total_size );
766 for (rel = (IMAGE_BASE_RELOCATION *)(base + dir->VirtualAddress);
767 ((char *)rel < base + dir->VirtualAddress + dir->Size) && rel->SizeOfBlock;
768 rel = (IMAGE_BASE_RELOCATION*)((char*)rel + rel->SizeOfBlock) )
770 char *page = base + rel->VirtualAddress;
771 WORD *TypeOffset = (WORD *)(rel + 1);
772 int i, count = (rel->SizeOfBlock - sizeof(*rel)) / sizeof(*TypeOffset);
774 if (!count) continue;
777 if ((char *)rel + rel->SizeOfBlock > base + dir->VirtualAddress + dir->Size)
779 ERR_(module)("invalid relocation %p,%lx,%ld at %p,%lx,%lx\n",
780 rel, rel->VirtualAddress, rel->SizeOfBlock,
781 base, dir->VirtualAddress, dir->Size );
785 if (page > base + total_size)
787 WARN_(module)("skipping %d relocations for page %p beyond module %p-%p\n",
788 count, page, base, base + total_size );
792 TRACE_(module)("%d relocations for page %lx\n", count, rel->VirtualAddress);
794 /* patching in reverse order */
795 for (i = 0 ; i < count; i++)
797 int offset = TypeOffset[i] & 0xFFF;
798 int type = TypeOffset[i] >> 12;
801 case IMAGE_REL_BASED_ABSOLUTE:
803 case IMAGE_REL_BASED_HIGH:
804 *(short*)(page+offset) += HIWORD(delta);
806 case IMAGE_REL_BASED_LOW:
807 *(short*)(page+offset) += LOWORD(delta);
809 case IMAGE_REL_BASED_HIGHLOW:
810 *(int*)(page+offset) += delta;
811 /* FIXME: if this is an exported address, fire up enhanced logic */
814 FIXME_(module)("Unknown/unsupported fixup type %d.\n", type);
823 /***********************************************************************
826 * Map an executable (PE format) image into memory.
828 static NTSTATUS map_image( HANDLE hmapping, int fd, char *base, SIZE_T total_size,
829 SIZE_T header_size, int shared_fd, BOOL removable, PVOID *addr_ptr )
831 IMAGE_DOS_HEADER *dos;
832 IMAGE_NT_HEADERS *nt;
833 IMAGE_SECTION_HEADER *sec;
834 IMAGE_DATA_DIRECTORY *imports;
835 NTSTATUS status = STATUS_CONFLICTING_ADDRESSES;
838 struct file_view *view = NULL;
841 /* zero-map the whole range */
843 RtlEnterCriticalSection( &csVirtual );
845 if (base >= (char *)0x110000) /* make sure the DOS area remains free */
846 status = map_view( &view, base, total_size,
847 VPROT_COMMITTED | VPROT_READ | VPROT_EXEC | VPROT_WRITECOPY | VPROT_IMAGE );
849 if (status == STATUS_CONFLICTING_ADDRESSES)
850 status = map_view( &view, NULL, total_size,
851 VPROT_COMMITTED | VPROT_READ | VPROT_EXEC | VPROT_WRITECOPY | VPROT_IMAGE );
853 if (status != STATUS_SUCCESS) goto error;
856 TRACE_(module)( "mapped PE file at %p-%p\n", ptr, ptr + total_size );
860 status = STATUS_INVALID_IMAGE_FORMAT; /* generic error */
861 if (map_file_into_view( view, fd, 0, header_size, 0, VPROT_COMMITTED | VPROT_READ,
862 removable ) != STATUS_SUCCESS) goto error;
863 dos = (IMAGE_DOS_HEADER *)ptr;
864 nt = (IMAGE_NT_HEADERS *)(ptr + dos->e_lfanew);
865 if ((char *)(nt + 1) > ptr + header_size) goto error;
867 sec = (IMAGE_SECTION_HEADER*)((char*)&nt->OptionalHeader+nt->FileHeader.SizeOfOptionalHeader);
868 if ((char *)(sec + nt->FileHeader.NumberOfSections) > ptr + header_size) goto error;
870 imports = nt->OptionalHeader.DataDirectory + IMAGE_DIRECTORY_ENTRY_IMPORT;
871 if (!imports->Size || !imports->VirtualAddress) imports = NULL;
873 /* check the architecture */
875 if (nt->FileHeader.Machine != IMAGE_FILE_MACHINE_I386)
877 MESSAGE("Trying to load PE image for unsupported architecture (");
878 switch (nt->FileHeader.Machine)
880 case IMAGE_FILE_MACHINE_UNKNOWN: MESSAGE("Unknown"); break;
881 case IMAGE_FILE_MACHINE_I860: MESSAGE("I860"); break;
882 case IMAGE_FILE_MACHINE_R3000: MESSAGE("R3000"); break;
883 case IMAGE_FILE_MACHINE_R4000: MESSAGE("R4000"); break;
884 case IMAGE_FILE_MACHINE_R10000: MESSAGE("R10000"); break;
885 case IMAGE_FILE_MACHINE_ALPHA: MESSAGE("Alpha"); break;
886 case IMAGE_FILE_MACHINE_POWERPC: MESSAGE("PowerPC"); break;
887 case IMAGE_FILE_MACHINE_IA64: MESSAGE("IA-64"); break;
888 case IMAGE_FILE_MACHINE_ALPHA64: MESSAGE("Alpha-64"); break;
889 case IMAGE_FILE_MACHINE_AMD64: MESSAGE("AMD-64"); break;
890 default: MESSAGE("Unknown-%04x", nt->FileHeader.Machine); break;
896 /* check for non page-aligned binary */
898 if (nt->OptionalHeader.SectionAlignment <= page_mask)
900 /* unaligned sections, this happens for native subsystem binaries */
901 /* in that case Windows simply maps in the whole file */
903 if (map_file_into_view( view, fd, 0, total_size, 0, VPROT_COMMITTED | VPROT_READ,
904 removable ) != STATUS_SUCCESS) goto error;
906 /* check that all sections are loaded at the right offset */
907 for (i = 0; i < nt->FileHeader.NumberOfSections; i++)
909 if (sec[i].VirtualAddress != sec[i].PointerToRawData)
910 goto error; /* Windows refuses to load in that case too */
913 /* set the image protections */
914 VIRTUAL_SetProt( view, ptr, total_size,
915 VPROT_COMMITTED | VPROT_READ | VPROT_WRITECOPY | VPROT_EXEC );
917 /* perform relocations if necessary */
918 /* FIXME: not 100% compatible, Windows doesn't do this for non page-aligned binaries */
921 const IMAGE_DATA_DIRECTORY *relocs;
922 relocs = &nt->OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_BASERELOC];
923 if (relocs->VirtualAddress && relocs->Size)
924 do_relocations( ptr, relocs, ptr - base, total_size );
931 /* map all the sections */
933 for (i = pos = 0; i < nt->FileHeader.NumberOfSections; i++, sec++)
935 SIZE_T map_size, file_size, end;
937 if (!sec->Misc.VirtualSize)
939 file_size = sec->SizeOfRawData;
940 map_size = ROUND_SIZE( 0, file_size );
944 map_size = ROUND_SIZE( 0, sec->Misc.VirtualSize );
945 file_size = min( sec->SizeOfRawData, map_size );
948 /* a few sanity checks */
949 end = sec->VirtualAddress + ROUND_SIZE( sec->VirtualAddress, map_size );
950 if (sec->VirtualAddress > total_size || end > total_size || end < sec->VirtualAddress)
952 ERR_(module)( "Section %.8s too large (%lx+%lx/%lx)\n",
953 sec->Name, sec->VirtualAddress, map_size, total_size );
957 if ((sec->Characteristics & IMAGE_SCN_MEM_SHARED) &&
958 (sec->Characteristics & IMAGE_SCN_MEM_WRITE))
960 TRACE_(module)( "mapping shared section %.8s at %p off %lx (%x) size %lx (%lx) flags %lx\n",
961 sec->Name, ptr + sec->VirtualAddress,
962 sec->PointerToRawData, (int)pos, file_size, map_size,
963 sec->Characteristics );
964 if (map_file_into_view( view, shared_fd, sec->VirtualAddress, map_size, pos,
965 VPROT_COMMITTED | VPROT_READ | PROT_WRITE,
966 FALSE ) != STATUS_SUCCESS)
968 ERR_(module)( "Could not map shared section %.8s\n", sec->Name );
972 /* check if the import directory falls inside this section */
973 if (imports && imports->VirtualAddress >= sec->VirtualAddress &&
974 imports->VirtualAddress < sec->VirtualAddress + map_size)
976 UINT_PTR base = imports->VirtualAddress & ~page_mask;
977 UINT_PTR end = base + ROUND_SIZE( imports->VirtualAddress, imports->Size );
978 if (end > sec->VirtualAddress + map_size) end = sec->VirtualAddress + map_size;
980 map_file_into_view( view, shared_fd, base, end - base,
981 pos + (base - sec->VirtualAddress),
982 VPROT_COMMITTED | VPROT_READ | VPROT_WRITECOPY,
989 TRACE_(module)( "mapping section %.8s at %p off %lx size %lx virt %lx flags %lx\n",
990 sec->Name, ptr + sec->VirtualAddress,
991 sec->PointerToRawData, sec->SizeOfRawData,
992 sec->Misc.VirtualSize, sec->Characteristics );
994 if (!sec->PointerToRawData || !file_size) continue;
996 /* Note: if the section is not aligned properly map_file_into_view will magically
997 * fall back to read(), so we don't need to check anything here.
999 if (map_file_into_view( view, fd, sec->VirtualAddress, file_size, sec->PointerToRawData,
1000 VPROT_COMMITTED | VPROT_READ | VPROT_WRITECOPY,
1001 removable ) != STATUS_SUCCESS)
1003 ERR_(module)( "Could not map section %.8s, file probably truncated\n", sec->Name );
1007 if (file_size & page_mask)
1009 end = ROUND_SIZE( 0, file_size );
1010 if (end > map_size) end = map_size;
1011 TRACE_(module)("clearing %p - %p\n",
1012 ptr + sec->VirtualAddress + file_size,
1013 ptr + sec->VirtualAddress + end );
1014 memset( ptr + sec->VirtualAddress + file_size, 0, end - file_size );
1019 /* perform base relocation, if necessary */
1023 const IMAGE_DATA_DIRECTORY *relocs;
1025 relocs = &nt->OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_BASERELOC];
1026 if (!relocs->VirtualAddress || !relocs->Size)
1028 if (nt->OptionalHeader.ImageBase == 0x400000) {
1029 ERR("Image was mapped at %p: standard load address for a Win32 program (0x00400000) not available\n", ptr);
1030 ERR("Do you have exec-shield or prelink active?\n");
1032 ERR( "FATAL: Need to relocate module from addr %lx, but there are no relocation records\n",
1033 nt->OptionalHeader.ImageBase );
1037 /* FIXME: If we need to relocate a system DLL (base > 2GB) we should
1038 * really make sure that the *new* base address is also > 2GB.
1039 * Some DLLs really check the MSB of the module handle :-/
1041 if ((nt->OptionalHeader.ImageBase & 0x80000000) && !((ULONG_PTR)base & 0x80000000))
1042 ERR( "Forced to relocate system DLL (base > 2GB). This is not good.\n" );
1044 if (!do_relocations( ptr, relocs, ptr - base, total_size ))
1050 /* set the image protections */
1052 sec = (IMAGE_SECTION_HEADER*)((char *)&nt->OptionalHeader+nt->FileHeader.SizeOfOptionalHeader);
1053 for (i = 0; i < nt->FileHeader.NumberOfSections; i++, sec++)
1055 SIZE_T size = ROUND_SIZE( sec->VirtualAddress, sec->Misc.VirtualSize );
1056 BYTE vprot = VPROT_COMMITTED;
1057 if (sec->Characteristics & IMAGE_SCN_MEM_READ) vprot |= VPROT_READ;
1058 if (sec->Characteristics & IMAGE_SCN_MEM_WRITE) vprot |= VPROT_READ|VPROT_WRITECOPY;
1059 if (sec->Characteristics & IMAGE_SCN_MEM_EXECUTE) vprot |= VPROT_EXEC;
1060 VIRTUAL_SetProt( view, ptr + sec->VirtualAddress, size, vprot );
1064 if (!removable) /* don't keep handle open on removable media */
1065 NtDuplicateObject( NtCurrentProcess(), hmapping,
1066 NtCurrentProcess(), &view->mapping,
1067 0, 0, DUPLICATE_SAME_ACCESS );
1069 RtlLeaveCriticalSection( &csVirtual );
1072 return STATUS_SUCCESS;
1075 if (view) delete_view( view );
1076 RtlLeaveCriticalSection( &csVirtual );
1081 /***********************************************************************
1082 * is_current_process
1084 * Check whether a process handle is for the current process.
1086 BOOL is_current_process( HANDLE handle )
1090 if (handle == NtCurrentProcess()) return TRUE;
1091 SERVER_START_REQ( get_process_info )
1093 req->handle = handle;
1094 if (!wine_server_call( req ))
1095 ret = ((DWORD)reply->pid == GetCurrentProcessId());
1102 /***********************************************************************
1105 static inline void virtual_init(void)
1108 page_size = getpagesize();
1109 page_mask = page_size - 1;
1110 /* Make sure we have a power of 2 */
1111 assert( !(page_size & page_mask) );
1113 while ((1 << page_shift) != page_size) page_shift++;
1114 #endif /* page_mask */
1118 /***********************************************************************
1121 * Allocate a memory view for a new TEB, properly aligned to a multiple of the size.
1123 NTSTATUS VIRTUAL_alloc_teb( void **ret, size_t size, BOOL first )
1127 struct file_view *view;
1129 BYTE vprot = VPROT_READ | VPROT_WRITE | VPROT_COMMITTED;
1131 if (first) virtual_init();
1134 size = ROUND_SIZE( 0, size );
1135 align_size = page_size;
1136 while (align_size < size) align_size *= 2;
1140 if ((ptr = wine_anon_mmap( NULL, 2 * align_size, VIRTUAL_GetUnixProt(vprot), 0 )) == (void *)-1)
1142 if (errno == ENOMEM) return STATUS_NO_MEMORY;
1143 return STATUS_INVALID_PARAMETER;
1145 if (!is_beyond_limit( ptr, 2 * align_size, user_space_limit ))
1147 ptr = unmap_extra_space( ptr, 2 * align_size, align_size, align_size - 1 );
1150 /* if we got something beyond the user limit, unmap it and retry */
1151 add_reserved_area( ptr, 2 * align_size );
1154 if (!first) RtlEnterCriticalSection( &csVirtual );
1156 status = create_view( &view, ptr, size, vprot );
1157 if (status == STATUS_SUCCESS)
1159 view->flags |= VFLAG_VALLOC;
1162 else unmap_area( ptr, size );
1164 if (!first) RtlLeaveCriticalSection( &csVirtual );
1170 /***********************************************************************
1171 * VIRTUAL_HandleFault
1173 NTSTATUS VIRTUAL_HandleFault( LPCVOID addr )
1176 NTSTATUS ret = STATUS_ACCESS_VIOLATION;
1178 RtlEnterCriticalSection( &csVirtual );
1179 if ((view = VIRTUAL_FindView( addr )))
1181 void *page = ROUND_ADDR( addr, page_mask );
1182 BYTE vprot = view->prot[((const char *)page - (const char *)view->base) >> page_shift];
1183 if (vprot & VPROT_GUARD)
1185 VIRTUAL_SetProt( view, page, page_mask + 1, vprot & ~VPROT_GUARD );
1186 ret = STATUS_GUARD_PAGE_VIOLATION;
1189 RtlLeaveCriticalSection( &csVirtual );
1193 /***********************************************************************
1194 * VIRTUAL_HasMapping
1196 * Check if the specified view has an associated file mapping.
1198 BOOL VIRTUAL_HasMapping( LPCVOID addr )
1203 RtlEnterCriticalSection( &csVirtual );
1204 if ((view = VIRTUAL_FindView( addr ))) ret = (view->mapping != 0);
1205 RtlLeaveCriticalSection( &csVirtual );
1210 /***********************************************************************
1211 * VIRTUAL_UseLargeAddressSpace
1213 * Increase the address space size for apps that support it.
1215 void VIRTUAL_UseLargeAddressSpace(void)
1217 if (user_space_limit >= ADDRESS_SPACE_LIMIT) return;
1218 /* no large address space on win9x */
1219 if (NtCurrentTeb()->Peb->OSPlatformId != VER_PLATFORM_WIN32_NT) return;
1221 RtlEnterCriticalSection( &csVirtual );
1222 remove_reserved_area( user_space_limit, (char *)ADDRESS_SPACE_LIMIT - (char *)user_space_limit );
1223 user_space_limit = ADDRESS_SPACE_LIMIT;
1224 RtlLeaveCriticalSection( &csVirtual );
1228 /***********************************************************************
1229 * NtAllocateVirtualMemory (NTDLL.@)
1230 * ZwAllocateVirtualMemory (NTDLL.@)
1232 NTSTATUS WINAPI NtAllocateVirtualMemory( HANDLE process, PVOID *ret, ULONG zero_bits,
1233 SIZE_T *size_ptr, ULONG type, ULONG protect )
1237 SIZE_T size = *size_ptr;
1238 NTSTATUS status = STATUS_SUCCESS;
1239 struct file_view *view;
1241 TRACE("%p %p %08lx %lx %08lx\n", process, *ret, size, type, protect );
1243 if (!size) return STATUS_INVALID_PARAMETER;
1245 if (!is_current_process( process ))
1247 ERR("Unsupported on other process\n");
1248 return STATUS_ACCESS_DENIED;
1251 /* Round parameters to a page boundary */
1253 if (size > 0x7fc00000) return STATUS_WORKING_SET_LIMIT_RANGE; /* 2Gb - 4Mb */
1257 if (type & MEM_RESERVE) /* Round down to 64k boundary */
1258 base = ROUND_ADDR( *ret, granularity_mask );
1260 base = ROUND_ADDR( *ret, page_mask );
1261 size = (((UINT_PTR)*ret + size + page_mask) & ~page_mask) - (UINT_PTR)base;
1263 /* disallow low 64k, wrap-around and kernel space */
1264 if (((char *)base <= (char *)granularity_mask) ||
1265 ((char *)base + size < (char *)base) ||
1266 is_beyond_limit( base, size, ADDRESS_SPACE_LIMIT ))
1267 return STATUS_INVALID_PARAMETER;
1272 size = (size + page_mask) & ~page_mask;
1275 if (type & MEM_TOP_DOWN) {
1276 /* FIXME: MEM_TOP_DOWN allocates the largest possible address. */
1277 WARN("MEM_TOP_DOWN ignored\n");
1278 type &= ~MEM_TOP_DOWN;
1282 WARN("zero_bits %lu ignored\n", zero_bits);
1284 /* Compute the alloc type flags */
1286 if (!(type & MEM_SYSTEM))
1288 if (!(type & (MEM_COMMIT | MEM_RESERVE)) || (type & ~(MEM_COMMIT | MEM_RESERVE)))
1290 WARN("called with wrong alloc type flags (%08lx) !\n", type);
1291 return STATUS_INVALID_PARAMETER;
1294 vprot = VIRTUAL_GetProt( protect );
1295 if (type & MEM_COMMIT) vprot |= VPROT_COMMITTED;
1297 /* Reserve the memory */
1299 RtlEnterCriticalSection( &csVirtual );
1301 if (type & MEM_SYSTEM)
1303 if (type & MEM_IMAGE) vprot |= VPROT_IMAGE;
1304 status = create_view( &view, base, size, vprot | VPROT_COMMITTED );
1305 if (status == STATUS_SUCCESS)
1307 view->flags |= VFLAG_VALLOC | VFLAG_SYSTEM;
1311 else if ((type & MEM_RESERVE) || !base)
1313 status = map_view( &view, base, size, vprot );
1314 if (status == STATUS_SUCCESS)
1316 view->flags |= VFLAG_VALLOC;
1320 else /* commit the pages */
1322 if (!(view = VIRTUAL_FindView( base )) ||
1323 ((char *)base + size > (char *)view->base + view->size)) status = STATUS_NOT_MAPPED_VIEW;
1324 else if (!VIRTUAL_SetProt( view, base, size, vprot )) status = STATUS_ACCESS_DENIED;
1327 RtlLeaveCriticalSection( &csVirtual );
1329 if (status == STATUS_SUCCESS)
1338 /***********************************************************************
1339 * NtFreeVirtualMemory (NTDLL.@)
1340 * ZwFreeVirtualMemory (NTDLL.@)
1342 NTSTATUS WINAPI NtFreeVirtualMemory( HANDLE process, PVOID *addr_ptr, SIZE_T *size_ptr, ULONG type )
1346 NTSTATUS status = STATUS_SUCCESS;
1347 LPVOID addr = *addr_ptr;
1348 SIZE_T size = *size_ptr;
1350 TRACE("%p %p %08lx %lx\n", process, addr, size, type );
1352 if (!is_current_process( process ))
1354 ERR("Unsupported on other process\n");
1355 return STATUS_ACCESS_DENIED;
1358 /* Fix the parameters */
1360 size = ROUND_SIZE( addr, size );
1361 base = ROUND_ADDR( addr, page_mask );
1363 RtlEnterCriticalSection(&csVirtual);
1365 if (!(view = VIRTUAL_FindView( base )) ||
1366 (base + size > (char *)view->base + view->size) ||
1367 !(view->flags & VFLAG_VALLOC))
1369 status = STATUS_INVALID_PARAMETER;
1371 else if (type & MEM_SYSTEM)
1373 /* return the values that the caller should use to unmap the area */
1374 *addr_ptr = view->base;
1375 *size_ptr = view->size;
1376 view->flags |= VFLAG_SYSTEM;
1377 delete_view( view );
1379 else if (type == MEM_RELEASE)
1381 /* Free the pages */
1383 if (size || (base != view->base)) status = STATUS_INVALID_PARAMETER;
1386 delete_view( view );
1391 else if (type == MEM_DECOMMIT)
1393 status = decommit_pages( view, base - (char *)view->base, size );
1394 if (status == STATUS_SUCCESS)
1402 WARN("called with wrong free type flags (%08lx) !\n", type);
1403 status = STATUS_INVALID_PARAMETER;
1406 RtlLeaveCriticalSection(&csVirtual);
1411 /***********************************************************************
1412 * NtProtectVirtualMemory (NTDLL.@)
1413 * ZwProtectVirtualMemory (NTDLL.@)
1415 NTSTATUS WINAPI NtProtectVirtualMemory( HANDLE process, PVOID *addr_ptr, SIZE_T *size_ptr,
1416 ULONG new_prot, ULONG *old_prot )
1419 NTSTATUS status = STATUS_SUCCESS;
1424 SIZE_T size = *size_ptr;
1425 LPVOID addr = *addr_ptr;
1427 TRACE("%p %p %08lx %08lx\n", process, addr, size, new_prot );
1429 if (!is_current_process( process ))
1431 ERR("Unsupported on other process\n");
1432 return STATUS_ACCESS_DENIED;
1435 /* Fix the parameters */
1437 size = ROUND_SIZE( addr, size );
1438 base = ROUND_ADDR( addr, page_mask );
1440 RtlEnterCriticalSection( &csVirtual );
1442 if (!(view = VIRTUAL_FindView( base )) || (base + size > (char *)view->base + view->size))
1444 status = STATUS_INVALID_PARAMETER;
1448 /* Make sure all the pages are committed */
1450 p = view->prot + ((base - (char *)view->base) >> page_shift);
1451 prot = VIRTUAL_GetWin32Prot( *p );
1452 for (i = size >> page_shift; i; i--, p++)
1454 if (!(*p & VPROT_COMMITTED))
1456 status = STATUS_NOT_COMMITTED;
1462 if (old_prot) *old_prot = prot;
1463 vprot = VIRTUAL_GetProt( new_prot ) | VPROT_COMMITTED;
1464 if (!VIRTUAL_SetProt( view, base, size, vprot )) status = STATUS_ACCESS_DENIED;
1467 RtlLeaveCriticalSection( &csVirtual );
1469 if (status == STATUS_SUCCESS)
1477 #define UNIMPLEMENTED_INFO_CLASS(c) \
1479 FIXME("(process=%p,addr=%p) Unimplemented information class: " #c "\n", process, addr); \
1480 return STATUS_INVALID_INFO_CLASS
1482 /***********************************************************************
1483 * NtQueryVirtualMemory (NTDLL.@)
1484 * ZwQueryVirtualMemory (NTDLL.@)
1486 NTSTATUS WINAPI NtQueryVirtualMemory( HANDLE process, LPCVOID addr,
1487 MEMORY_INFORMATION_CLASS info_class, PVOID buffer,
1488 SIZE_T len, SIZE_T *res_len )
1491 char *base, *alloc_base = 0;
1494 MEMORY_BASIC_INFORMATION *info = buffer;
1496 if (info_class != MemoryBasicInformation)
1500 UNIMPLEMENTED_INFO_CLASS(MemoryWorkingSetList);
1501 UNIMPLEMENTED_INFO_CLASS(MemorySectionName);
1502 UNIMPLEMENTED_INFO_CLASS(MemoryBasicVlmInformation);
1505 FIXME("(%p,%p,info_class=%d,%p,%ld,%p) Unknown information class\n",
1506 process, addr, info_class, buffer, len, res_len);
1507 return STATUS_INVALID_INFO_CLASS;
1510 if (ADDRESS_SPACE_LIMIT && addr >= ADDRESS_SPACE_LIMIT)
1511 return STATUS_WORKING_SET_LIMIT_RANGE;
1513 if (!is_current_process( process ))
1515 ERR("Unsupported on other process\n");
1516 return STATUS_ACCESS_DENIED;
1519 base = ROUND_ADDR( addr, page_mask );
1521 /* Find the view containing the address */
1523 RtlEnterCriticalSection(&csVirtual);
1524 ptr = list_head( &views_list );
1529 /* make the address space end at the user limit, except if
1530 * the last view was mapped beyond that */
1531 if (alloc_base <= (char *)user_space_limit)
1533 if (user_space_limit && base >= (char *)user_space_limit)
1535 RtlLeaveCriticalSection( &csVirtual );
1536 return STATUS_WORKING_SET_LIMIT_RANGE;
1538 size = (char *)user_space_limit - alloc_base;
1540 else size = (char *)ADDRESS_SPACE_LIMIT - alloc_base;
1544 view = LIST_ENTRY( ptr, struct file_view, entry );
1545 if ((char *)view->base > base)
1547 size = (char *)view->base - alloc_base;
1551 if ((char *)view->base + view->size > base)
1553 alloc_base = view->base;
1557 alloc_base = (char *)view->base + view->size;
1558 ptr = list_next( &views_list, ptr );
1561 /* Fill the info structure */
1565 info->State = MEM_FREE;
1567 info->AllocationProtect = 0;
1572 BYTE vprot = view->prot[(base - alloc_base) >> page_shift];
1573 info->State = (vprot & VPROT_COMMITTED) ? MEM_COMMIT : MEM_RESERVE;
1574 info->Protect = VIRTUAL_GetWin32Prot( vprot );
1575 info->AllocationProtect = VIRTUAL_GetWin32Prot( view->protect );
1576 if (view->protect & VPROT_IMAGE) info->Type = MEM_IMAGE;
1577 else if (view->flags & VFLAG_VALLOC) info->Type = MEM_PRIVATE;
1578 else info->Type = MEM_MAPPED;
1579 for (size = base - alloc_base; size < view->size; size += page_mask+1)
1580 if (view->prot[size >> page_shift] != vprot) break;
1582 RtlLeaveCriticalSection(&csVirtual);
1584 info->BaseAddress = (LPVOID)base;
1585 info->AllocationBase = (LPVOID)alloc_base;
1586 info->RegionSize = size - (base - alloc_base);
1587 if (res_len) *res_len = sizeof(*info);
1588 return STATUS_SUCCESS;
1592 /***********************************************************************
1593 * NtLockVirtualMemory (NTDLL.@)
1594 * ZwLockVirtualMemory (NTDLL.@)
1596 NTSTATUS WINAPI NtLockVirtualMemory( HANDLE process, PVOID *addr, SIZE_T *size, ULONG unknown )
1598 if (!is_current_process( process ))
1600 ERR("Unsupported on other process\n");
1601 return STATUS_ACCESS_DENIED;
1603 return STATUS_SUCCESS;
1607 /***********************************************************************
1608 * NtUnlockVirtualMemory (NTDLL.@)
1609 * ZwUnlockVirtualMemory (NTDLL.@)
1611 NTSTATUS WINAPI NtUnlockVirtualMemory( HANDLE process, PVOID *addr, SIZE_T *size, ULONG unknown )
1613 if (!is_current_process( process ))
1615 ERR("Unsupported on other process\n");
1616 return STATUS_ACCESS_DENIED;
1618 return STATUS_SUCCESS;
1622 /***********************************************************************
1623 * NtCreateSection (NTDLL.@)
1624 * ZwCreateSection (NTDLL.@)
1626 NTSTATUS WINAPI NtCreateSection( HANDLE *handle, ACCESS_MASK access, const OBJECT_ATTRIBUTES *attr,
1627 const LARGE_INTEGER *size, ULONG protect,
1628 ULONG sec_flags, HANDLE file )
1632 DWORD len = (attr && attr->ObjectName) ? attr->ObjectName->Length : 0;
1634 /* Check parameters */
1636 if (len > MAX_PATH*sizeof(WCHAR)) return STATUS_NAME_TOO_LONG;
1638 vprot = VIRTUAL_GetProt( protect );
1639 if (sec_flags & SEC_RESERVE)
1641 if (file) return STATUS_INVALID_PARAMETER;
1643 else vprot |= VPROT_COMMITTED;
1644 if (sec_flags & SEC_NOCACHE) vprot |= VPROT_NOCACHE;
1645 if (sec_flags & SEC_IMAGE) vprot |= VPROT_IMAGE;
1647 /* Create the server object */
1649 SERVER_START_REQ( create_mapping )
1651 req->access = access;
1652 req->attributes = (attr) ? attr->Attributes : 0;
1653 req->rootdir = attr ? attr->RootDirectory : 0;
1654 req->file_handle = file;
1655 req->size_high = size ? size->u.HighPart : 0;
1656 req->size_low = size ? size->u.LowPart : 0;
1657 req->protect = vprot;
1658 if (len) wine_server_add_data( req, attr->ObjectName->Buffer, len );
1659 ret = wine_server_call( req );
1660 *handle = reply->handle;
1667 /***********************************************************************
1668 * NtOpenSection (NTDLL.@)
1669 * ZwOpenSection (NTDLL.@)
1671 NTSTATUS WINAPI NtOpenSection( HANDLE *handle, ACCESS_MASK access, const OBJECT_ATTRIBUTES *attr )
1674 DWORD len = attr->ObjectName->Length;
1676 if (len > MAX_PATH*sizeof(WCHAR)) return STATUS_NAME_TOO_LONG;
1678 SERVER_START_REQ( open_mapping )
1680 req->access = access;
1681 req->attributes = (attr) ? attr->Attributes : 0;
1682 req->rootdir = attr ? attr->RootDirectory : 0;
1683 wine_server_add_data( req, attr->ObjectName->Buffer, len );
1684 if (!(ret = wine_server_call( req ))) *handle = reply->handle;
1691 /***********************************************************************
1692 * NtMapViewOfSection (NTDLL.@)
1693 * ZwMapViewOfSection (NTDLL.@)
1695 NTSTATUS WINAPI NtMapViewOfSection( HANDLE handle, HANDLE process, PVOID *addr_ptr, ULONG zero_bits,
1696 SIZE_T commit_size, const LARGE_INTEGER *offset_ptr, SIZE_T *size_ptr,
1697 SECTION_INHERIT inherit, ULONG alloc_type, ULONG protect )
1699 FILE_FS_DEVICE_INFORMATION device_info;
1702 int unix_handle = -1;
1705 struct file_view *view;
1706 DWORD size_low, size_high, header_size, shared_size;
1708 BOOL removable = FALSE;
1709 LARGE_INTEGER offset;
1711 offset.QuadPart = offset_ptr ? offset_ptr->QuadPart : 0;
1713 TRACE("handle=%p process=%p addr=%p off=%lx%08lx size=%lx access=%lx\n",
1714 handle, process, *addr_ptr, offset.u.HighPart, offset.u.LowPart, size, protect );
1716 if (!is_current_process( process ))
1718 ERR("Unsupported on other process\n");
1719 return STATUS_ACCESS_DENIED;
1722 /* Check parameters */
1724 if ((offset.u.LowPart & granularity_mask) ||
1725 (*addr_ptr && ((UINT_PTR)*addr_ptr & granularity_mask)))
1726 return STATUS_INVALID_PARAMETER;
1728 SERVER_START_REQ( get_mapping_info )
1730 req->handle = handle;
1731 res = wine_server_call( req );
1732 prot = reply->protect;
1734 size_low = reply->size_low;
1735 size_high = reply->size_high;
1736 header_size = reply->header_size;
1737 shared_file = reply->shared_file;
1738 shared_size = reply->shared_size;
1741 if (res) return res;
1743 if ((res = wine_server_handle_to_fd( handle, 0, &unix_handle, NULL ))) return res;
1745 if (FILE_GetDeviceInfo( unix_handle, &device_info ) == STATUS_SUCCESS)
1746 removable = device_info.Characteristics & FILE_REMOVABLE_MEDIA;
1748 if (prot & VPROT_IMAGE)
1754 if ((res = wine_server_handle_to_fd( shared_file, FILE_READ_DATA|FILE_WRITE_DATA,
1755 &shared_fd, NULL ))) goto done;
1756 res = map_image( handle, unix_handle, base, size_low, header_size,
1757 shared_fd, removable, addr_ptr );
1758 wine_server_release_fd( shared_file, shared_fd );
1759 NtClose( shared_file );
1763 res = map_image( handle, unix_handle, base, size_low, header_size,
1764 -1, removable, addr_ptr );
1766 wine_server_release_fd( handle, unix_handle );
1767 if (!res) *size_ptr = size_low;
1772 ERR("Sizes larger than 4Gb not supported\n");
1774 if ((offset.u.LowPart >= size_low) ||
1775 (*size_ptr > size_low - offset.u.LowPart))
1777 res = STATUS_INVALID_PARAMETER;
1780 if (*size_ptr) size = ROUND_SIZE( offset.u.LowPart, *size_ptr );
1781 else size = size_low - offset.u.LowPart;
1787 case PAGE_READWRITE:
1788 case PAGE_EXECUTE_READWRITE:
1789 if (!(prot & VPROT_WRITE))
1791 res = STATUS_INVALID_PARAMETER;
1797 case PAGE_WRITECOPY:
1799 case PAGE_EXECUTE_READ:
1800 case PAGE_EXECUTE_WRITECOPY:
1801 if (prot & VPROT_READ) break;
1804 res = STATUS_INVALID_PARAMETER;
1808 /* FIXME: If a mapping is created with SEC_RESERVE and a process,
1809 * which has a view of this mapping commits some pages, they will
1810 * appear commited in all other processes, which have the same
1811 * view created. Since we don`t support this yet, we create the
1812 * whole mapping commited.
1814 prot |= VPROT_COMMITTED;
1816 /* Reserve a properly aligned area */
1818 RtlEnterCriticalSection( &csVirtual );
1820 res = map_view( &view, *addr_ptr, size, prot );
1823 RtlLeaveCriticalSection( &csVirtual );
1829 TRACE("handle=%p size=%lx offset=%lx%08lx\n",
1830 handle, size, offset.u.HighPart, offset.u.LowPart );
1832 res = map_file_into_view( view, unix_handle, 0, size, offset.QuadPart, prot, removable );
1833 if (res == STATUS_SUCCESS)
1835 if (!removable) /* don't keep handle open on removable media */
1836 NtDuplicateObject( NtCurrentProcess(), handle,
1837 NtCurrentProcess(), &view->mapping,
1838 0, 0, DUPLICATE_SAME_ACCESS );
1840 *addr_ptr = view->base;
1845 ERR( "map_file_into_view %p %lx %lx%08lx failed\n",
1846 view->base, size, offset.u.HighPart, offset.u.LowPart );
1847 delete_view( view );
1850 RtlLeaveCriticalSection( &csVirtual );
1853 wine_server_release_fd( handle, unix_handle );
1858 /***********************************************************************
1859 * NtUnmapViewOfSection (NTDLL.@)
1860 * ZwUnmapViewOfSection (NTDLL.@)
1862 NTSTATUS WINAPI NtUnmapViewOfSection( HANDLE process, PVOID addr )
1865 NTSTATUS status = STATUS_INVALID_PARAMETER;
1866 void *base = ROUND_ADDR( addr, page_mask );
1868 if (!is_current_process( process ))
1870 ERR("Unsupported on other process\n");
1871 return STATUS_ACCESS_DENIED;
1873 RtlEnterCriticalSection( &csVirtual );
1874 if ((view = VIRTUAL_FindView( base )) && (base == view->base))
1876 delete_view( view );
1877 status = STATUS_SUCCESS;
1879 RtlLeaveCriticalSection( &csVirtual );
1884 /***********************************************************************
1885 * NtFlushVirtualMemory (NTDLL.@)
1886 * ZwFlushVirtualMemory (NTDLL.@)
1888 NTSTATUS WINAPI NtFlushVirtualMemory( HANDLE process, LPCVOID *addr_ptr,
1889 SIZE_T *size_ptr, ULONG unknown )
1892 NTSTATUS status = STATUS_SUCCESS;
1893 void *addr = ROUND_ADDR( *addr_ptr, page_mask );
1895 if (!is_current_process( process ))
1897 ERR("Unsupported on other process\n");
1898 return STATUS_ACCESS_DENIED;
1900 RtlEnterCriticalSection( &csVirtual );
1901 if (!(view = VIRTUAL_FindView( addr ))) status = STATUS_INVALID_PARAMETER;
1904 if (!*size_ptr) *size_ptr = view->size;
1906 if (msync( addr, *size_ptr, MS_SYNC )) status = STATUS_NOT_MAPPED_DATA;
1908 RtlLeaveCriticalSection( &csVirtual );
1913 /***********************************************************************
1914 * NtReadVirtualMemory (NTDLL.@)
1915 * ZwReadVirtualMemory (NTDLL.@)
1917 NTSTATUS WINAPI NtReadVirtualMemory( HANDLE process, const void *addr, void *buffer,
1918 SIZE_T size, SIZE_T *bytes_read )
1922 SERVER_START_REQ( read_process_memory )
1924 req->handle = process;
1925 req->addr = (void *)addr;
1926 wine_server_set_reply( req, buffer, size );
1927 if ((status = wine_server_call( req ))) size = 0;
1930 if (bytes_read) *bytes_read = size;
1935 /***********************************************************************
1936 * NtWriteVirtualMemory (NTDLL.@)
1937 * ZwWriteVirtualMemory (NTDLL.@)
1939 NTSTATUS WINAPI NtWriteVirtualMemory( HANDLE process, void *addr, const void *buffer,
1940 SIZE_T size, SIZE_T *bytes_written )
1942 static const unsigned int zero;
1943 SIZE_T first_offset, last_offset, first_mask, last_mask;
1946 if (!size) return STATUS_INVALID_PARAMETER;
1948 /* compute the mask for the first int */
1950 first_offset = (ULONG_PTR)addr % sizeof(int);
1951 memset( &first_mask, 0, first_offset );
1953 /* compute the mask for the last int */
1954 last_offset = (size + first_offset) % sizeof(int);
1956 memset( &last_mask, 0xff, last_offset ? last_offset : sizeof(int) );
1958 SERVER_START_REQ( write_process_memory )
1960 req->handle = process;
1961 req->addr = (char *)addr - first_offset;
1962 req->first_mask = first_mask;
1963 req->last_mask = last_mask;
1964 if (first_offset) wine_server_add_data( req, &zero, first_offset );
1965 wine_server_add_data( req, buffer, size );
1966 if (last_offset) wine_server_add_data( req, &zero, sizeof(int) - last_offset );
1968 if ((status = wine_server_call( req ))) size = 0;
1971 if (bytes_written) *bytes_written = size;