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
48 #include "wine/library.h"
49 #include "wine/server.h"
50 #include "wine/list.h"
51 #include "wine/debug.h"
52 #include "ntdll_misc.h"
54 WINE_DEFAULT_DEBUG_CHANNEL(virtual);
55 WINE_DECLARE_DEBUG_CHANNEL(module);
62 #define MAP_NORESERVE 0
66 typedef struct file_view
68 struct list entry; /* Entry in global view list */
69 void *base; /* Base address */
70 UINT size; /* Size in bytes */
71 HANDLE mapping; /* Handle to the file mapping */
72 BYTE flags; /* Allocation flags (VFLAG_*) */
73 BYTE protect; /* Protection for all pages at allocation time */
74 BYTE prot[1]; /* Protection byte for each page */
78 #define VFLAG_SYSTEM 0x01 /* system view (underlying mmap not under our control) */
79 #define VFLAG_VALLOC 0x02 /* allocated by VirtualAlloc */
81 /* Conversion from VPROT_* to Win32 flags */
82 static const BYTE VIRTUAL_Win32Flags[16] =
84 PAGE_NOACCESS, /* 0 */
85 PAGE_READONLY, /* READ */
86 PAGE_READWRITE, /* WRITE */
87 PAGE_READWRITE, /* READ | WRITE */
88 PAGE_EXECUTE, /* EXEC */
89 PAGE_EXECUTE_READ, /* READ | EXEC */
90 PAGE_EXECUTE_READWRITE, /* WRITE | EXEC */
91 PAGE_EXECUTE_READWRITE, /* READ | WRITE | EXEC */
92 PAGE_WRITECOPY, /* WRITECOPY */
93 PAGE_WRITECOPY, /* READ | WRITECOPY */
94 PAGE_WRITECOPY, /* WRITE | WRITECOPY */
95 PAGE_WRITECOPY, /* READ | WRITE | WRITECOPY */
96 PAGE_EXECUTE_WRITECOPY, /* EXEC | WRITECOPY */
97 PAGE_EXECUTE_WRITECOPY, /* READ | EXEC | WRITECOPY */
98 PAGE_EXECUTE_WRITECOPY, /* WRITE | EXEC | WRITECOPY */
99 PAGE_EXECUTE_WRITECOPY /* READ | WRITE | EXEC | WRITECOPY */
102 static struct list views_list = LIST_INIT(views_list);
104 static RTL_CRITICAL_SECTION csVirtual;
105 static RTL_CRITICAL_SECTION_DEBUG critsect_debug =
108 { &critsect_debug.ProcessLocksList, &critsect_debug.ProcessLocksList },
109 0, 0, { 0, (DWORD)(__FILE__ ": csVirtual") }
111 static RTL_CRITICAL_SECTION csVirtual = { &critsect_debug, -1, 0, 0, 0, 0 };
114 /* These are always the same on an i386, and it will be faster this way */
115 # define page_mask 0xfff
116 # define page_shift 12
117 # define page_size 0x1000
118 /* Note: these are Windows limits, you cannot change them. */
119 # define ADDRESS_SPACE_LIMIT ((void *)0xc0000000) /* top of the total available address space */
120 # define USER_SPACE_LIMIT ((void *)0x80000000) /* top of the user address space */
122 static UINT page_shift;
123 static UINT page_mask;
124 static UINT page_size;
125 # define ADDRESS_SPACE_LIMIT 0 /* no limit needed on other platforms */
126 # define USER_SPACE_LIMIT 0 /* no limit needed on other platforms */
127 #endif /* __i386__ */
128 #define granularity_mask 0xffff /* Allocation granularity (usually 64k) */
130 #define ROUND_ADDR(addr,mask) \
131 ((void *)((UINT_PTR)(addr) & ~(mask)))
133 #define ROUND_SIZE(addr,size) \
134 (((UINT)(size) + ((UINT_PTR)(addr) & page_mask) + page_mask) & ~page_mask)
136 #define VIRTUAL_DEBUG_DUMP_VIEW(view) \
137 if (!TRACE_ON(virtual)); else VIRTUAL_DumpView(view)
139 static void *user_space_limit = USER_SPACE_LIMIT;
142 /***********************************************************************
145 static const char *VIRTUAL_GetProtStr( BYTE prot )
147 static char buffer[6];
148 buffer[0] = (prot & VPROT_COMMITTED) ? 'c' : '-';
149 buffer[1] = (prot & VPROT_GUARD) ? 'g' : '-';
150 buffer[2] = (prot & VPROT_READ) ? 'r' : '-';
151 buffer[3] = (prot & VPROT_WRITECOPY) ? 'W' : ((prot & VPROT_WRITE) ? 'w' : '-');
152 buffer[4] = (prot & VPROT_EXEC) ? 'x' : '-';
158 /***********************************************************************
161 static void VIRTUAL_DumpView( FILE_VIEW *view )
164 char *addr = view->base;
165 BYTE prot = view->prot[0];
167 DPRINTF( "View: %p - %p", addr, addr + view->size - 1 );
168 if (view->flags & VFLAG_SYSTEM)
169 DPRINTF( " (system)\n" );
170 else if (view->flags & VFLAG_VALLOC)
171 DPRINTF( " (valloc)\n" );
172 else if (view->mapping)
173 DPRINTF( " %p\n", view->mapping );
175 DPRINTF( " (anonymous)\n");
177 for (count = i = 1; i < view->size >> page_shift; i++, count++)
179 if (view->prot[i] == prot) continue;
180 DPRINTF( " %p - %p %s\n",
181 addr, addr + (count << page_shift) - 1, VIRTUAL_GetProtStr(prot) );
182 addr += (count << page_shift);
183 prot = view->prot[i];
187 DPRINTF( " %p - %p %s\n",
188 addr, addr + (count << page_shift) - 1, VIRTUAL_GetProtStr(prot) );
192 /***********************************************************************
195 void VIRTUAL_Dump(void)
197 struct file_view *view;
199 DPRINTF( "\nDump of all virtual memory views:\n\n" );
200 RtlEnterCriticalSection(&csVirtual);
201 LIST_FOR_EACH_ENTRY( view, &views_list, FILE_VIEW, entry )
203 VIRTUAL_DumpView( view );
205 RtlLeaveCriticalSection(&csVirtual);
209 /***********************************************************************
212 * Find the view containing a given address. The csVirtual section must be held by caller.
221 static struct file_view *VIRTUAL_FindView( const void *addr )
223 struct file_view *view;
225 LIST_FOR_EACH_ENTRY( view, &views_list, struct file_view, entry )
227 if (view->base > addr) break;
228 if ((const char*)view->base + view->size > (const char*)addr) return view;
234 /***********************************************************************
237 * Find the first view overlapping at least part of the specified range.
238 * The csVirtual section must be held by caller.
240 static struct file_view *find_view_range( const void *addr, size_t size )
242 struct file_view *view;
244 LIST_FOR_EACH_ENTRY( view, &views_list, struct file_view, entry )
246 if ((const char *)view->base >= (const char *)addr + size) break;
247 if ((const char *)view->base + view->size > (const char *)addr) return view;
253 /***********************************************************************
256 * Add a reserved area to the list maintained by libwine.
257 * The csVirtual section must be held by caller.
259 static void add_reserved_area( void *addr, size_t size )
261 TRACE( "adding %p-%p\n", addr, (char *)addr + size );
263 if (addr < user_space_limit)
265 /* unmap the part of the area that is below the limit */
266 assert( (char *)addr + size > (char *)user_space_limit );
267 munmap( addr, (char *)user_space_limit - (char *)addr );
268 size -= (char *)user_space_limit - (char *)addr;
269 addr = user_space_limit;
271 /* blow away existing mappings */
272 wine_anon_mmap( addr, size, PROT_NONE, MAP_NORESERVE | MAP_FIXED );
273 wine_mmap_add_reserved_area( addr, size );
277 /***********************************************************************
278 * remove_reserved_area
280 * Remove a reserved area from the list maintained by libwine.
281 * The csVirtual section must be held by caller.
283 static void remove_reserved_area( void *addr, size_t size )
285 struct file_view *view;
287 LIST_FOR_EACH_ENTRY( view, &views_list, struct file_view, entry )
289 if ((char *)view->base >= (char *)addr + size) break;
290 if ((char *)view->base + view->size <= (char *)addr) continue;
291 /* now we have an overlapping view */
292 if (view->base > addr)
294 wine_mmap_remove_reserved_area( addr, (char *)view->base - (char *)addr, TRUE );
295 size -= (char *)view->base - (char *)addr;
298 if ((char *)view->base + view->size >= (char *)addr + size)
300 /* view covers all the remaining area */
301 wine_mmap_remove_reserved_area( addr, size, FALSE );
305 else /* view covers only part of the area */
307 wine_mmap_remove_reserved_area( addr, (char *)view->base + view->size - (char *)addr, FALSE );
308 size -= (char *)view->base + view->size - (char *)addr;
309 addr = (char *)view->base + view->size;
312 /* remove remaining space */
313 if (size) wine_mmap_remove_reserved_area( addr, size, TRUE );
317 /***********************************************************************
320 * Check if an address range goes beyond a given limit.
322 static inline int is_beyond_limit( void *addr, size_t size, void *limit )
324 return (limit && (addr >= limit || (char *)addr + size > (char *)limit));
328 /***********************************************************************
331 * Unmap an area, or simply replace it by an empty mapping if it is
332 * in a reserved area. The csVirtual section must be held by caller.
334 static inline void unmap_area( void *addr, size_t size )
336 if (wine_mmap_is_in_reserved_area( addr, size ))
337 wine_anon_mmap( addr, size, PROT_NONE, MAP_NORESERVE | MAP_FIXED );
339 munmap( addr, size );
343 /***********************************************************************
346 * Deletes a view. The csVirtual section must be held by caller.
348 static void delete_view( struct file_view *view ) /* [in] View */
350 if (!(view->flags & VFLAG_SYSTEM)) unmap_area( view->base, view->size );
351 list_remove( &view->entry );
352 if (view->mapping) NtClose( view->mapping );
357 /***********************************************************************
360 * Create a view. The csVirtual section must be held by caller.
362 static NTSTATUS create_view( struct file_view **view_ret, void *base, size_t size, BYTE vprot )
364 struct file_view *view;
367 assert( !((unsigned int)base & page_mask) );
368 assert( !(size & page_mask) );
370 /* Create the view structure */
372 if (!(view = malloc( sizeof(*view) + (size >> page_shift) - 1 ))) return STATUS_NO_MEMORY;
378 view->protect = vprot;
379 memset( view->prot, vprot, size >> page_shift );
381 /* Insert it in the linked list */
383 LIST_FOR_EACH( ptr, &views_list )
385 struct file_view *next = LIST_ENTRY( ptr, struct file_view, entry );
386 if (next->base > base) break;
388 list_add_before( ptr, &view->entry );
390 /* Check for overlapping views. This can happen if the previous view
391 * was a system view that got unmapped behind our back. In that case
392 * we recover by simply deleting it. */
394 if ((ptr = list_prev( &views_list, &view->entry )) != NULL)
396 struct file_view *prev = LIST_ENTRY( ptr, struct file_view, entry );
397 if ((char *)prev->base + prev->size > (char *)base)
399 TRACE( "overlapping prev view %p-%p for %p-%p\n",
400 prev->base, (char *)prev->base + prev->size,
401 base, (char *)base + view->size );
402 assert( prev->flags & VFLAG_SYSTEM );
406 if ((ptr = list_next( &views_list, &view->entry )) != NULL)
408 struct file_view *next = LIST_ENTRY( ptr, struct file_view, entry );
409 if ((char *)base + view->size > (char *)next->base)
411 TRACE( "overlapping next view %p-%p for %p-%p\n",
412 next->base, (char *)next->base + next->size,
413 base, (char *)base + view->size );
414 assert( next->flags & VFLAG_SYSTEM );
420 VIRTUAL_DEBUG_DUMP_VIEW( view );
421 return STATUS_SUCCESS;
425 /***********************************************************************
426 * VIRTUAL_GetUnixProt
428 * Convert page protections to protection for mmap/mprotect.
430 static int VIRTUAL_GetUnixProt( BYTE vprot )
433 if ((vprot & VPROT_COMMITTED) && !(vprot & VPROT_GUARD))
435 if (vprot & VPROT_READ) prot |= PROT_READ;
436 if (vprot & VPROT_WRITE) prot |= PROT_WRITE;
437 if (vprot & VPROT_WRITECOPY) prot |= PROT_WRITE;
438 if (vprot & VPROT_EXEC) prot |= PROT_EXEC;
444 /***********************************************************************
445 * VIRTUAL_GetWin32Prot
447 * Convert page protections to Win32 flags.
452 static void VIRTUAL_GetWin32Prot(
453 BYTE vprot, /* [in] Page protection flags */
454 DWORD *protect, /* [out] Location to store Win32 protection flags */
455 DWORD *state ) /* [out] Location to store mem state flag */
458 *protect = VIRTUAL_Win32Flags[vprot & 0x0f];
459 if (vprot & VPROT_NOCACHE) *protect |= PAGE_NOCACHE;
460 if (vprot & VPROT_GUARD) *protect = PAGE_NOACCESS | PAGE_GUARD;
463 if (state) *state = (vprot & VPROT_COMMITTED) ? MEM_COMMIT : MEM_RESERVE;
467 /***********************************************************************
470 * Build page protections from Win32 flags.
473 * protect [I] Win32 protection flags
476 * Value of page protection flags
478 static BYTE VIRTUAL_GetProt( DWORD protect )
482 switch(protect & 0xff)
488 vprot = VPROT_READ | VPROT_WRITE;
491 /* MSDN CreateFileMapping() states that if PAGE_WRITECOPY is given,
492 * that the hFile must have been opened with GENERIC_READ and
493 * GENERIC_WRITE access. This is WRONG as tests show that you
494 * only need GENERIC_READ access (at least for Win9x,
495 * FIXME: what about NT?). Thus, we don't put VPROT_WRITE in
496 * PAGE_WRITECOPY and PAGE_EXECUTE_WRITECOPY.
498 vprot = VPROT_READ | VPROT_WRITECOPY;
503 case PAGE_EXECUTE_READ:
504 vprot = VPROT_EXEC | VPROT_READ;
506 case PAGE_EXECUTE_READWRITE:
507 vprot = VPROT_EXEC | VPROT_READ | VPROT_WRITE;
509 case PAGE_EXECUTE_WRITECOPY:
510 /* See comment for PAGE_WRITECOPY above */
511 vprot = VPROT_EXEC | VPROT_READ | VPROT_WRITECOPY;
518 if (protect & PAGE_GUARD) vprot |= VPROT_GUARD;
519 if (protect & PAGE_NOCACHE) vprot |= VPROT_NOCACHE;
524 /***********************************************************************
527 * Change the protection of a range of pages.
533 static BOOL VIRTUAL_SetProt( FILE_VIEW *view, /* [in] Pointer to view */
534 void *base, /* [in] Starting address */
535 UINT size, /* [in] Size in bytes */
536 BYTE vprot ) /* [in] Protections to use */
539 base, (char *)base + size - 1, VIRTUAL_GetProtStr( vprot ) );
541 if (mprotect( base, size, VIRTUAL_GetUnixProt(vprot) ))
542 return FALSE; /* FIXME: last error */
544 memset( view->prot + (((char *)base - (char *)view->base) >> page_shift),
545 vprot, size >> page_shift );
546 VIRTUAL_DEBUG_DUMP_VIEW( view );
551 /***********************************************************************
554 * Create a view and mmap the corresponding memory area.
555 * The csVirtual section must be held by caller.
557 static NTSTATUS map_view( struct file_view **view_ret, void *base, size_t size, BYTE vprot )
564 if (is_beyond_limit( base, size, ADDRESS_SPACE_LIMIT ))
565 return STATUS_WORKING_SET_LIMIT_RANGE;
567 switch (wine_mmap_is_in_reserved_area( base, size ))
569 case -1: /* partially in a reserved area */
570 return STATUS_CONFLICTING_ADDRESSES;
572 case 0: /* not in a reserved area, do a normal allocation */
573 if ((ptr = wine_anon_mmap( base, size, VIRTUAL_GetUnixProt(vprot), 0 )) == (void *)-1)
575 if (errno == ENOMEM) return STATUS_NO_MEMORY;
576 return STATUS_INVALID_PARAMETER;
580 /* We couldn't get the address we wanted */
581 if (is_beyond_limit( ptr, size, user_space_limit )) add_reserved_area( ptr, size );
582 else munmap( ptr, size );
583 return STATUS_CONFLICTING_ADDRESSES;
588 case 1: /* in a reserved area, make sure the address is available */
589 if (find_view_range( base, size )) return STATUS_CONFLICTING_ADDRESSES;
590 /* replace the reserved area by our mapping */
591 if ((ptr = wine_anon_mmap( base, size, VIRTUAL_GetUnixProt(vprot), MAP_FIXED )) != base)
592 return STATUS_INVALID_PARAMETER;
598 size_t view_size = size + granularity_mask + 1;
602 if ((ptr = wine_anon_mmap( NULL, view_size, VIRTUAL_GetUnixProt(vprot), 0 )) == (void *)-1)
604 if (errno == ENOMEM) return STATUS_NO_MEMORY;
605 return STATUS_INVALID_PARAMETER;
607 /* if we got something beyond the user limit, unmap it and retry */
608 if (is_beyond_limit( ptr, view_size, user_space_limit )) add_reserved_area( ptr, view_size );
612 /* Release the extra memory while keeping the range
613 * starting on the granularity boundary. */
614 if ((unsigned int)ptr & granularity_mask)
616 unsigned int extra = granularity_mask + 1 - ((unsigned int)ptr & granularity_mask);
617 munmap( ptr, extra );
618 ptr = (char *)ptr + extra;
621 if (view_size > size)
622 munmap( (char *)ptr + size, view_size - size );
625 status = create_view( view_ret, ptr, size, vprot );
626 if (status != STATUS_SUCCESS) unmap_area( ptr, size );
631 /***********************************************************************
634 * Linux kernels before 2.4.x can support non page-aligned offsets, as
635 * long as the offset is aligned to the filesystem block size. This is
636 * a big performance gain so we want to take advantage of it.
638 * However, when we use 64-bit file support this doesn't work because
639 * glibc rejects unaligned offsets. Also glibc 2.1.3 mmap64 is broken
640 * in that it rounds unaligned offsets down to a page boundary. For
641 * these reasons we do a direct system call here.
643 static void *unaligned_mmap( void *addr, size_t length, unsigned int prot,
644 unsigned int flags, int fd, off_t offset )
646 #if defined(linux) && defined(__i386__) && defined(__GNUC__)
647 if (!(offset >> 32) && (offset & page_mask))
662 args.length = length;
666 args.offset = offset;
668 __asm__ __volatile__("push %%ebx\n\t"
673 : "0" (90), /* SYS_mmap */
676 if (ret < 0 && ret > -4096)
684 return mmap( addr, length, prot, flags, fd, offset );
688 /***********************************************************************
691 * Wrapper for mmap() to map a file into a view, falling back to read if mmap fails.
692 * The csVirtual section must be held by caller.
694 static NTSTATUS map_file_into_view( struct file_view *view, int fd, size_t start, size_t size,
695 off_t offset, BYTE vprot, BOOL removable )
698 int prot = VIRTUAL_GetUnixProt( vprot );
699 BOOL shared_write = (vprot & VPROT_WRITE) != 0;
701 assert( start < view->size );
702 assert( start + size <= view->size );
704 /* only try mmap if media is not removable (or if we require write access) */
705 if (!removable || shared_write)
707 int flags = MAP_FIXED | (shared_write ? MAP_SHARED : MAP_PRIVATE);
709 if (unaligned_mmap( (char *)view->base + start, size, prot, flags, fd, offset ) != (void *)-1)
712 /* mmap() failed; if this is because the file offset is not */
713 /* page-aligned (EINVAL), or because the underlying filesystem */
714 /* does not support mmap() (ENOEXEC,ENODEV), we do it by hand. */
715 if ((errno != ENOEXEC) && (errno != EINVAL) && (errno != ENODEV)) return FILE_GetNtStatus();
716 if (shared_write) return FILE_GetNtStatus(); /* we cannot fake shared write mappings */
719 /* Reserve the memory with an anonymous mmap */
720 ptr = wine_anon_mmap( (char *)view->base + start, size, PROT_READ | PROT_WRITE, MAP_FIXED );
721 if (ptr == (void *)-1) return FILE_GetNtStatus();
722 /* Now read in the file */
723 pread( fd, ptr, size, offset );
724 if (prot != (PROT_READ|PROT_WRITE)) mprotect( ptr, size, prot ); /* Set the right protection */
726 memset( view->prot + (start >> page_shift), vprot, size >> page_shift );
727 return STATUS_SUCCESS;
731 /***********************************************************************
734 * Decommit some pages of a given view.
735 * The csVirtual section must be held by caller.
737 static NTSTATUS decommit_pages( struct file_view *view, size_t start, size_t size )
739 if (wine_anon_mmap( (char *)view->base + start, size, PROT_NONE, MAP_FIXED ) != (void *)-1)
741 BYTE *p = view->prot + (start >> page_shift);
743 while (size--) *p++ &= ~VPROT_COMMITTED;
744 return STATUS_SUCCESS;
746 return FILE_GetNtStatus();
750 /***********************************************************************
753 * Apply the relocations to a mapped PE image
755 static int do_relocations( char *base, const IMAGE_DATA_DIRECTORY *dir,
756 int delta, DWORD total_size )
758 IMAGE_BASE_RELOCATION *rel;
760 TRACE_(module)( "relocating from %p-%p to %p-%p\n",
761 base - delta, base - delta + total_size, base, base + total_size );
763 for (rel = (IMAGE_BASE_RELOCATION *)(base + dir->VirtualAddress);
764 ((char *)rel < base + dir->VirtualAddress + dir->Size) && rel->SizeOfBlock;
765 rel = (IMAGE_BASE_RELOCATION*)((char*)rel + rel->SizeOfBlock) )
767 char *page = base + rel->VirtualAddress;
768 WORD *TypeOffset = (WORD *)(rel + 1);
769 int i, count = (rel->SizeOfBlock - sizeof(*rel)) / sizeof(*TypeOffset);
771 if (!count) continue;
774 if ((char *)rel + rel->SizeOfBlock > base + dir->VirtualAddress + dir->Size ||
775 page > base + total_size)
777 ERR_(module)("invalid relocation %p,%lx,%ld at %p,%lx,%lx\n",
778 rel, rel->VirtualAddress, rel->SizeOfBlock,
779 base, dir->VirtualAddress, dir->Size );
783 TRACE_(module)("%ld relocations for page %lx\n", rel->SizeOfBlock, rel->VirtualAddress);
785 /* patching in reverse order */
786 for (i = 0 ; i < count; i++)
788 int offset = TypeOffset[i] & 0xFFF;
789 int type = TypeOffset[i] >> 12;
792 case IMAGE_REL_BASED_ABSOLUTE:
794 case IMAGE_REL_BASED_HIGH:
795 *(short*)(page+offset) += HIWORD(delta);
797 case IMAGE_REL_BASED_LOW:
798 *(short*)(page+offset) += LOWORD(delta);
800 case IMAGE_REL_BASED_HIGHLOW:
801 *(int*)(page+offset) += delta;
802 /* FIXME: if this is an exported address, fire up enhanced logic */
805 FIXME_(module)("Unknown/unsupported fixup type %d.\n", type);
814 /***********************************************************************
817 * Map an executable (PE format) image into memory.
819 static NTSTATUS map_image( HANDLE hmapping, int fd, char *base, DWORD total_size,
820 DWORD header_size, int shared_fd, BOOL removable, PVOID *addr_ptr )
822 IMAGE_DOS_HEADER *dos;
823 IMAGE_NT_HEADERS *nt;
824 IMAGE_SECTION_HEADER *sec;
825 IMAGE_DATA_DIRECTORY *imports;
826 NTSTATUS status = STATUS_CONFLICTING_ADDRESSES;
829 struct file_view *view = NULL;
832 /* zero-map the whole range */
834 RtlEnterCriticalSection( &csVirtual );
836 if (base >= (char *)0x110000) /* make sure the DOS area remains free */
837 status = map_view( &view, base, total_size,
838 VPROT_COMMITTED | VPROT_READ | VPROT_EXEC | VPROT_WRITECOPY | VPROT_IMAGE );
840 if (status == STATUS_CONFLICTING_ADDRESSES)
841 status = map_view( &view, NULL, total_size,
842 VPROT_COMMITTED | VPROT_READ | VPROT_EXEC | VPROT_WRITECOPY | VPROT_IMAGE );
844 if (status != STATUS_SUCCESS) goto error;
847 TRACE_(module)( "mapped PE file at %p-%p\n", ptr, ptr + total_size );
851 status = STATUS_INVALID_IMAGE_FORMAT; /* generic error */
852 if (map_file_into_view( view, fd, 0, header_size, 0, VPROT_COMMITTED | VPROT_READ,
853 removable ) != STATUS_SUCCESS) goto error;
854 dos = (IMAGE_DOS_HEADER *)ptr;
855 nt = (IMAGE_NT_HEADERS *)(ptr + dos->e_lfanew);
856 if ((char *)(nt + 1) > ptr + header_size) goto error;
858 sec = (IMAGE_SECTION_HEADER*)((char*)&nt->OptionalHeader+nt->FileHeader.SizeOfOptionalHeader);
859 if ((char *)(sec + nt->FileHeader.NumberOfSections) > ptr + header_size) goto error;
861 imports = nt->OptionalHeader.DataDirectory + IMAGE_DIRECTORY_ENTRY_IMPORT;
862 if (!imports->Size || !imports->VirtualAddress) imports = NULL;
864 /* check the architecture */
866 if (nt->FileHeader.Machine != IMAGE_FILE_MACHINE_I386)
868 MESSAGE("Trying to load PE image for unsupported architecture (");
869 switch (nt->FileHeader.Machine)
871 case IMAGE_FILE_MACHINE_UNKNOWN: MESSAGE("Unknown"); break;
872 case IMAGE_FILE_MACHINE_I860: MESSAGE("I860"); break;
873 case IMAGE_FILE_MACHINE_R3000: MESSAGE("R3000"); break;
874 case IMAGE_FILE_MACHINE_R4000: MESSAGE("R4000"); break;
875 case IMAGE_FILE_MACHINE_R10000: MESSAGE("R10000"); break;
876 case IMAGE_FILE_MACHINE_ALPHA: MESSAGE("Alpha"); break;
877 case IMAGE_FILE_MACHINE_POWERPC: MESSAGE("PowerPC"); break;
878 default: MESSAGE("Unknown-%04x", nt->FileHeader.Machine); break;
884 /* check for non page-aligned binary */
886 if (nt->OptionalHeader.SectionAlignment <= page_mask)
888 /* unaligned sections, this happens for native subsystem binaries */
889 /* in that case Windows simply maps in the whole file */
891 if (map_file_into_view( view, fd, 0, total_size, 0, VPROT_COMMITTED | VPROT_READ,
892 removable ) != STATUS_SUCCESS) goto error;
894 /* check that all sections are loaded at the right offset */
895 for (i = 0; i < nt->FileHeader.NumberOfSections; i++)
897 if (sec[i].VirtualAddress != sec[i].PointerToRawData)
898 goto error; /* Windows refuses to load in that case too */
901 /* set the image protections */
902 VIRTUAL_SetProt( view, ptr, total_size,
903 VPROT_COMMITTED | VPROT_READ | VPROT_WRITECOPY | VPROT_EXEC );
905 /* perform relocations if necessary */
906 /* FIXME: not 100% compatible, Windows doesn't do this for non page-aligned binaries */
909 const IMAGE_DATA_DIRECTORY *relocs;
910 relocs = &nt->OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_BASERELOC];
911 if (relocs->VirtualAddress && relocs->Size)
912 do_relocations( ptr, relocs, ptr - base, total_size );
919 /* map all the sections */
921 for (i = pos = 0; i < nt->FileHeader.NumberOfSections; i++, sec++)
925 /* a few sanity checks */
926 size = sec->VirtualAddress + ROUND_SIZE( sec->VirtualAddress, sec->Misc.VirtualSize );
927 if (sec->VirtualAddress > total_size || size > total_size || size < sec->VirtualAddress)
929 ERR_(module)( "Section %.8s too large (%lx+%lx/%lx)\n",
930 sec->Name, sec->VirtualAddress, sec->Misc.VirtualSize, total_size );
934 if ((sec->Characteristics & IMAGE_SCN_MEM_SHARED) &&
935 (sec->Characteristics & IMAGE_SCN_MEM_WRITE))
937 size = ROUND_SIZE( 0, sec->Misc.VirtualSize );
938 TRACE_(module)( "mapping shared section %.8s at %p off %lx (%x) size %lx (%lx) flags %lx\n",
939 sec->Name, ptr + sec->VirtualAddress,
940 sec->PointerToRawData, (int)pos, sec->SizeOfRawData,
941 size, sec->Characteristics );
942 if (map_file_into_view( view, shared_fd, sec->VirtualAddress, size, pos,
943 VPROT_COMMITTED | VPROT_READ | PROT_WRITE,
944 FALSE ) != STATUS_SUCCESS)
946 ERR_(module)( "Could not map shared section %.8s\n", sec->Name );
950 /* check if the import directory falls inside this section */
951 if (imports && imports->VirtualAddress >= sec->VirtualAddress &&
952 imports->VirtualAddress < sec->VirtualAddress + size)
954 UINT_PTR base = imports->VirtualAddress & ~page_mask;
955 UINT_PTR end = base + ROUND_SIZE( imports->VirtualAddress, imports->Size );
956 if (end > sec->VirtualAddress + size) end = sec->VirtualAddress + size;
958 map_file_into_view( view, shared_fd, base, end - base,
959 pos + (base - sec->VirtualAddress),
960 VPROT_COMMITTED | VPROT_READ | VPROT_WRITECOPY,
967 TRACE_(module)( "mapping section %.8s at %p off %lx size %lx flags %lx\n",
968 sec->Name, ptr + sec->VirtualAddress,
969 sec->PointerToRawData, sec->SizeOfRawData,
970 sec->Characteristics );
972 if ((sec->Characteristics & IMAGE_SCN_CNT_UNINITIALIZED_DATA) &&
973 !(sec->Characteristics & IMAGE_SCN_CNT_INITIALIZED_DATA)) continue;
974 if (!sec->PointerToRawData || !sec->SizeOfRawData) continue;
976 /* Note: if the section is not aligned properly map_file_into_view will magically
977 * fall back to read(), so we don't need to check anything here.
979 if (map_file_into_view( view, fd, sec->VirtualAddress, sec->SizeOfRawData, sec->PointerToRawData,
980 VPROT_COMMITTED | VPROT_READ | VPROT_WRITECOPY,
981 removable ) != STATUS_SUCCESS)
983 ERR_(module)( "Could not map section %.8s, file probably truncated\n", sec->Name );
987 if ((sec->SizeOfRawData < sec->Misc.VirtualSize) && (sec->SizeOfRawData & page_mask))
989 DWORD end = ROUND_SIZE( 0, sec->SizeOfRawData );
990 if (end > sec->Misc.VirtualSize) end = sec->Misc.VirtualSize;
991 TRACE_(module)("clearing %p - %p\n",
992 ptr + sec->VirtualAddress + sec->SizeOfRawData,
993 ptr + sec->VirtualAddress + end );
994 memset( ptr + sec->VirtualAddress + sec->SizeOfRawData, 0,
995 end - sec->SizeOfRawData );
1000 /* perform base relocation, if necessary */
1004 const IMAGE_DATA_DIRECTORY *relocs;
1006 relocs = &nt->OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_BASERELOC];
1007 if (!relocs->VirtualAddress || !relocs->Size)
1009 if (nt->OptionalHeader.ImageBase == 0x400000) {
1010 ERR("Image was mapped at %p: standard load address for a Win32 program (0x00400000) not available\n", ptr);
1011 ERR("Do you have exec-shield or prelink active?\n");
1013 ERR( "FATAL: Need to relocate module from addr %lx, but there are no relocation records\n",
1014 nt->OptionalHeader.ImageBase );
1018 /* FIXME: If we need to relocate a system DLL (base > 2GB) we should
1019 * really make sure that the *new* base address is also > 2GB.
1020 * Some DLLs really check the MSB of the module handle :-/
1022 if ((nt->OptionalHeader.ImageBase & 0x80000000) && !((DWORD)base & 0x80000000))
1023 ERR( "Forced to relocate system DLL (base > 2GB). This is not good.\n" );
1025 if (!do_relocations( ptr, relocs, ptr - base, total_size ))
1031 /* set the image protections */
1033 sec = (IMAGE_SECTION_HEADER*)((char *)&nt->OptionalHeader+nt->FileHeader.SizeOfOptionalHeader);
1034 for (i = 0; i < nt->FileHeader.NumberOfSections; i++, sec++)
1036 DWORD size = ROUND_SIZE( sec->VirtualAddress, sec->Misc.VirtualSize );
1037 BYTE vprot = VPROT_COMMITTED;
1038 if (sec->Characteristics & IMAGE_SCN_MEM_READ) vprot |= VPROT_READ;
1039 if (sec->Characteristics & IMAGE_SCN_MEM_WRITE) vprot |= VPROT_READ|VPROT_WRITECOPY;
1040 if (sec->Characteristics & IMAGE_SCN_MEM_EXECUTE) vprot |= VPROT_EXEC;
1041 VIRTUAL_SetProt( view, ptr + sec->VirtualAddress, size, vprot );
1045 if (!removable) /* don't keep handle open on removable media */
1046 NtDuplicateObject( NtCurrentProcess(), hmapping,
1047 NtCurrentProcess(), &view->mapping,
1048 0, 0, DUPLICATE_SAME_ACCESS );
1050 RtlLeaveCriticalSection( &csVirtual );
1053 return STATUS_SUCCESS;
1056 if (view) delete_view( view );
1057 RtlLeaveCriticalSection( &csVirtual );
1062 /***********************************************************************
1063 * is_current_process
1065 * Check whether a process handle is for the current process.
1067 BOOL is_current_process( HANDLE handle )
1071 if (handle == NtCurrentProcess()) return TRUE;
1072 SERVER_START_REQ( get_process_info )
1074 req->handle = handle;
1075 if (!wine_server_call( req ))
1076 ret = ((DWORD)reply->pid == GetCurrentProcessId());
1083 /***********************************************************************
1086 void virtual_init(void)
1089 page_size = getpagesize();
1090 page_mask = page_size - 1;
1091 /* Make sure we have a power of 2 */
1092 assert( !(page_size & page_mask) );
1094 while ((1 << page_shift) != page_size) page_shift++;
1095 #endif /* page_mask */
1099 /***********************************************************************
1100 * VIRTUAL_HandleFault
1102 DWORD VIRTUAL_HandleFault( LPCVOID addr )
1105 DWORD ret = EXCEPTION_ACCESS_VIOLATION;
1107 RtlEnterCriticalSection( &csVirtual );
1108 if ((view = VIRTUAL_FindView( addr )))
1110 BYTE vprot = view->prot[((const char *)addr - (const char *)view->base) >> page_shift];
1111 void *page = (void *)((UINT_PTR)addr & ~page_mask);
1112 char *stack = NtCurrentTeb()->Tib.StackLimit;
1113 if (vprot & VPROT_GUARD)
1115 VIRTUAL_SetProt( view, page, page_mask + 1, vprot & ~VPROT_GUARD );
1116 ret = STATUS_GUARD_PAGE_VIOLATION;
1118 /* is it inside the stack guard page? */
1119 if (((const char *)addr >= stack) && ((const char *)addr < stack + (page_mask+1)))
1120 ret = STATUS_STACK_OVERFLOW;
1122 RtlLeaveCriticalSection( &csVirtual );
1126 /***********************************************************************
1127 * VIRTUAL_HasMapping
1129 * Check if the specified view has an associated file mapping.
1131 BOOL VIRTUAL_HasMapping( LPCVOID addr )
1136 RtlEnterCriticalSection( &csVirtual );
1137 if ((view = VIRTUAL_FindView( addr ))) ret = (view->mapping != 0);
1138 RtlLeaveCriticalSection( &csVirtual );
1143 /***********************************************************************
1144 * VIRTUAL_UseLargeAddressSpace
1146 * Increase the address space size for apps that support it.
1148 void VIRTUAL_UseLargeAddressSpace(void)
1150 if (user_space_limit >= ADDRESS_SPACE_LIMIT) return;
1151 RtlEnterCriticalSection( &csVirtual );
1152 remove_reserved_area( user_space_limit, (char *)ADDRESS_SPACE_LIMIT - (char *)user_space_limit );
1153 user_space_limit = ADDRESS_SPACE_LIMIT;
1154 RtlLeaveCriticalSection( &csVirtual );
1158 /***********************************************************************
1159 * NtAllocateVirtualMemory (NTDLL.@)
1160 * ZwAllocateVirtualMemory (NTDLL.@)
1162 NTSTATUS WINAPI NtAllocateVirtualMemory( HANDLE process, PVOID *ret, ULONG zero_bits,
1163 ULONG *size_ptr, ULONG type, ULONG protect )
1167 DWORD size = *size_ptr;
1168 NTSTATUS status = STATUS_SUCCESS;
1169 struct file_view *view;
1171 TRACE("%p %p %08lx %lx %08lx\n", process, *ret, size, type, protect );
1173 if (!size) return STATUS_INVALID_PARAMETER;
1175 if (!is_current_process( process ))
1177 ERR("Unsupported on other process\n");
1178 return STATUS_ACCESS_DENIED;
1181 /* Round parameters to a page boundary */
1183 if (size > 0x7fc00000) return STATUS_WORKING_SET_LIMIT_RANGE; /* 2Gb - 4Mb */
1187 if (type & MEM_RESERVE) /* Round down to 64k boundary */
1188 base = ROUND_ADDR( *ret, granularity_mask );
1190 base = ROUND_ADDR( *ret, page_mask );
1191 size = (((UINT_PTR)*ret + size + page_mask) & ~page_mask) - (UINT_PTR)base;
1193 /* disallow low 64k, wrap-around and kernel space */
1194 if (((char *)base <= (char *)granularity_mask) ||
1195 ((char *)base + size < (char *)base) ||
1196 is_beyond_limit( base, size, ADDRESS_SPACE_LIMIT ))
1197 return STATUS_INVALID_PARAMETER;
1202 size = (size + page_mask) & ~page_mask;
1205 if (type & MEM_TOP_DOWN) {
1206 /* FIXME: MEM_TOP_DOWN allocates the largest possible address. */
1207 WARN("MEM_TOP_DOWN ignored\n");
1208 type &= ~MEM_TOP_DOWN;
1212 WARN("zero_bits %lu ignored\n", zero_bits);
1214 /* Compute the alloc type flags */
1216 if (!(type & MEM_SYSTEM))
1218 if (!(type & (MEM_COMMIT | MEM_RESERVE)) || (type & ~(MEM_COMMIT | MEM_RESERVE)))
1220 WARN("called with wrong alloc type flags (%08lx) !\n", type);
1221 return STATUS_INVALID_PARAMETER;
1224 vprot = VIRTUAL_GetProt( protect );
1225 if (type & MEM_COMMIT) vprot |= VPROT_COMMITTED;
1227 /* Reserve the memory */
1229 RtlEnterCriticalSection( &csVirtual );
1231 if (type & MEM_SYSTEM)
1233 if (type & MEM_IMAGE) vprot |= VPROT_IMAGE;
1234 status = create_view( &view, base, size, vprot | VPROT_COMMITTED );
1235 if (status == STATUS_SUCCESS)
1237 view->flags |= VFLAG_VALLOC | VFLAG_SYSTEM;
1241 else if ((type & MEM_RESERVE) || !base)
1243 status = map_view( &view, base, size, vprot );
1244 if (status == STATUS_SUCCESS)
1246 view->flags |= VFLAG_VALLOC;
1250 else /* commit the pages */
1252 if (!(view = VIRTUAL_FindView( base )) ||
1253 ((char *)base + size > (char *)view->base + view->size)) status = STATUS_NOT_MAPPED_VIEW;
1254 else if (!VIRTUAL_SetProt( view, base, size, vprot )) status = STATUS_ACCESS_DENIED;
1257 RtlLeaveCriticalSection( &csVirtual );
1259 if (status == STATUS_SUCCESS)
1268 /***********************************************************************
1269 * NtFreeVirtualMemory (NTDLL.@)
1270 * ZwFreeVirtualMemory (NTDLL.@)
1272 NTSTATUS WINAPI NtFreeVirtualMemory( HANDLE process, PVOID *addr_ptr, ULONG *size_ptr, ULONG type )
1276 NTSTATUS status = STATUS_SUCCESS;
1277 LPVOID addr = *addr_ptr;
1278 DWORD size = *size_ptr;
1280 TRACE("%p %p %08lx %lx\n", process, addr, size, type );
1282 if (!is_current_process( process ))
1284 ERR("Unsupported on other process\n");
1285 return STATUS_ACCESS_DENIED;
1288 /* Fix the parameters */
1290 size = ROUND_SIZE( addr, size );
1291 base = ROUND_ADDR( addr, page_mask );
1293 RtlEnterCriticalSection(&csVirtual);
1295 if (!(view = VIRTUAL_FindView( base )) ||
1296 (base + size > (char *)view->base + view->size) ||
1297 !(view->flags & VFLAG_VALLOC))
1299 status = STATUS_INVALID_PARAMETER;
1301 else if (type & MEM_SYSTEM)
1303 /* return the values that the caller should use to unmap the area */
1304 *addr_ptr = view->base;
1305 *size_ptr = view->size;
1306 view->flags |= VFLAG_SYSTEM;
1307 delete_view( view );
1309 else if (type == MEM_RELEASE)
1311 /* Free the pages */
1313 if (size || (base != view->base)) status = STATUS_INVALID_PARAMETER;
1316 delete_view( view );
1321 else if (type == MEM_DECOMMIT)
1323 status = decommit_pages( view, base - (char *)view->base, size );
1324 if (status == STATUS_SUCCESS)
1332 WARN("called with wrong free type flags (%08lx) !\n", type);
1333 status = STATUS_INVALID_PARAMETER;
1336 RtlLeaveCriticalSection(&csVirtual);
1341 /***********************************************************************
1342 * NtProtectVirtualMemory (NTDLL.@)
1343 * ZwProtectVirtualMemory (NTDLL.@)
1345 NTSTATUS WINAPI NtProtectVirtualMemory( HANDLE process, PVOID *addr_ptr, ULONG *size_ptr,
1346 ULONG new_prot, ULONG *old_prot )
1349 NTSTATUS status = STATUS_SUCCESS;
1353 DWORD prot, size = *size_ptr;
1354 LPVOID addr = *addr_ptr;
1356 TRACE("%p %p %08lx %08lx\n", process, addr, size, new_prot );
1358 if (!is_current_process( process ))
1360 ERR("Unsupported on other process\n");
1361 return STATUS_ACCESS_DENIED;
1364 /* Fix the parameters */
1366 size = ROUND_SIZE( addr, size );
1367 base = ROUND_ADDR( addr, page_mask );
1369 RtlEnterCriticalSection( &csVirtual );
1371 if (!(view = VIRTUAL_FindView( base )) || (base + size > (char *)view->base + view->size))
1373 status = STATUS_INVALID_PARAMETER;
1377 /* Make sure all the pages are committed */
1379 p = view->prot + ((base - (char *)view->base) >> page_shift);
1380 VIRTUAL_GetWin32Prot( *p, &prot, NULL );
1381 for (i = size >> page_shift; i; i--, p++)
1383 if (!(*p & VPROT_COMMITTED))
1385 status = STATUS_NOT_COMMITTED;
1391 if (old_prot) *old_prot = prot;
1392 vprot = VIRTUAL_GetProt( new_prot ) | VPROT_COMMITTED;
1393 if (!VIRTUAL_SetProt( view, base, size, vprot )) status = STATUS_ACCESS_DENIED;
1396 RtlLeaveCriticalSection( &csVirtual );
1398 if (status == STATUS_SUCCESS)
1407 /***********************************************************************
1408 * NtQueryVirtualMemory (NTDLL.@)
1409 * ZwQueryVirtualMemory (NTDLL.@)
1411 NTSTATUS WINAPI NtQueryVirtualMemory( HANDLE process, LPCVOID addr,
1412 MEMORY_INFORMATION_CLASS info_class, PVOID buffer,
1413 ULONG len, ULONG *res_len )
1416 char *base, *alloc_base = 0;
1419 MEMORY_BASIC_INFORMATION *info = buffer;
1421 if (info_class != MemoryBasicInformation)
1423 FIXME("(%p, %p, %d, %p, %ld, %p) Unimplemented information class\n", process, addr,
1424 info_class, buffer, len, res_len);
1425 return STATUS_INVALID_INFO_CLASS;
1427 if (ADDRESS_SPACE_LIMIT && addr >= ADDRESS_SPACE_LIMIT)
1428 return STATUS_WORKING_SET_LIMIT_RANGE;
1430 if (!is_current_process( process ))
1432 ERR("Unsupported on other process\n");
1433 return STATUS_ACCESS_DENIED;
1436 base = ROUND_ADDR( addr, page_mask );
1438 /* Find the view containing the address */
1440 RtlEnterCriticalSection(&csVirtual);
1441 ptr = list_head( &views_list );
1446 /* make the address space end at the user limit, except if
1447 * the last view was mapped beyond that */
1448 if (alloc_base < (char *)user_space_limit)
1450 if (user_space_limit && base >= (char *)user_space_limit)
1452 RtlLeaveCriticalSection( &csVirtual );
1453 return STATUS_WORKING_SET_LIMIT_RANGE;
1455 size = (char *)user_space_limit - alloc_base;
1457 else size = (char *)ADDRESS_SPACE_LIMIT - alloc_base;
1461 view = LIST_ENTRY( ptr, struct file_view, entry );
1462 if ((char *)view->base > base)
1464 size = (char *)view->base - alloc_base;
1468 if ((char *)view->base + view->size > base)
1470 alloc_base = view->base;
1474 alloc_base = (char *)view->base + view->size;
1475 ptr = list_next( &views_list, ptr );
1478 /* Fill the info structure */
1482 info->State = MEM_FREE;
1484 info->AllocationProtect = 0;
1489 BYTE vprot = view->prot[(base - alloc_base) >> page_shift];
1490 VIRTUAL_GetWin32Prot( vprot, &info->Protect, &info->State );
1491 for (size = base - alloc_base; size < view->size; size += page_mask+1)
1492 if (view->prot[size >> page_shift] != vprot) break;
1493 VIRTUAL_GetWin32Prot( view->protect, &info->AllocationProtect, NULL );
1494 if (view->protect & VPROT_IMAGE) info->Type = MEM_IMAGE;
1495 else if (view->flags & VFLAG_VALLOC) info->Type = MEM_PRIVATE;
1496 else info->Type = MEM_MAPPED;
1498 RtlLeaveCriticalSection(&csVirtual);
1500 info->BaseAddress = (LPVOID)base;
1501 info->AllocationBase = (LPVOID)alloc_base;
1502 info->RegionSize = size - (base - alloc_base);
1503 if (res_len) *res_len = sizeof(*info);
1504 return STATUS_SUCCESS;
1508 /***********************************************************************
1509 * NtLockVirtualMemory (NTDLL.@)
1510 * ZwLockVirtualMemory (NTDLL.@)
1512 NTSTATUS WINAPI NtLockVirtualMemory( HANDLE process, PVOID *addr, ULONG *size, ULONG unknown )
1514 if (!is_current_process( process ))
1516 ERR("Unsupported on other process\n");
1517 return STATUS_ACCESS_DENIED;
1519 return STATUS_SUCCESS;
1523 /***********************************************************************
1524 * NtUnlockVirtualMemory (NTDLL.@)
1525 * ZwUnlockVirtualMemory (NTDLL.@)
1527 NTSTATUS WINAPI NtUnlockVirtualMemory( HANDLE process, PVOID *addr, ULONG *size, ULONG unknown )
1529 if (!is_current_process( process ))
1531 ERR("Unsupported on other process\n");
1532 return STATUS_ACCESS_DENIED;
1534 return STATUS_SUCCESS;
1538 /***********************************************************************
1539 * NtCreateSection (NTDLL.@)
1540 * ZwCreateSection (NTDLL.@)
1542 NTSTATUS WINAPI NtCreateSection( HANDLE *handle, ACCESS_MASK access, const OBJECT_ATTRIBUTES *attr,
1543 const LARGE_INTEGER *size, ULONG protect,
1544 ULONG sec_flags, HANDLE file )
1548 DWORD len = (attr && attr->ObjectName) ? attr->ObjectName->Length : 0;
1550 /* Check parameters */
1552 if (len > MAX_PATH*sizeof(WCHAR)) return STATUS_NAME_TOO_LONG;
1554 vprot = VIRTUAL_GetProt( protect );
1555 if (sec_flags & SEC_RESERVE)
1557 if (file) return STATUS_INVALID_PARAMETER;
1559 else vprot |= VPROT_COMMITTED;
1560 if (sec_flags & SEC_NOCACHE) vprot |= VPROT_NOCACHE;
1561 if (sec_flags & SEC_IMAGE) vprot |= VPROT_IMAGE;
1563 /* Create the server object */
1565 SERVER_START_REQ( create_mapping )
1567 req->file_handle = file;
1568 req->size_high = size ? size->u.HighPart : 0;
1569 req->size_low = size ? size->u.LowPart : 0;
1570 req->protect = vprot;
1571 req->access = access;
1572 req->inherit = (attr && (attr->Attributes & OBJ_INHERIT) != 0);
1573 if (len) wine_server_add_data( req, attr->ObjectName->Buffer, len );
1574 ret = wine_server_call( req );
1575 *handle = reply->handle;
1582 /***********************************************************************
1583 * NtOpenSection (NTDLL.@)
1584 * ZwOpenSection (NTDLL.@)
1586 NTSTATUS WINAPI NtOpenSection( HANDLE *handle, ACCESS_MASK access, const OBJECT_ATTRIBUTES *attr )
1589 DWORD len = attr->ObjectName->Length;
1591 if (len > MAX_PATH*sizeof(WCHAR)) return STATUS_NAME_TOO_LONG;
1593 SERVER_START_REQ( open_mapping )
1595 req->access = access;
1596 req->inherit = (attr->Attributes & OBJ_INHERIT) != 0;
1597 wine_server_add_data( req, attr->ObjectName->Buffer, len );
1598 if (!(ret = wine_server_call( req ))) *handle = reply->handle;
1605 /***********************************************************************
1606 * NtMapViewOfSection (NTDLL.@)
1607 * ZwMapViewOfSection (NTDLL.@)
1609 NTSTATUS WINAPI NtMapViewOfSection( HANDLE handle, HANDLE process, PVOID *addr_ptr, ULONG zero_bits,
1610 ULONG commit_size, const LARGE_INTEGER *offset_ptr, ULONG *size_ptr,
1611 SECTION_INHERIT inherit, ULONG alloc_type, ULONG protect )
1614 FILE_FS_DEVICE_INFORMATION device_info;
1617 int unix_handle = -1;
1620 struct file_view *view;
1621 DWORD size_low, size_high, header_size, shared_size;
1623 BOOL removable = FALSE;
1624 LARGE_INTEGER offset;
1626 offset.QuadPart = offset_ptr ? offset_ptr->QuadPart : 0;
1628 TRACE("handle=%p process=%p addr=%p off=%lx%08lx size=%x access=%lx\n",
1629 handle, process, *addr_ptr, offset.u.HighPart, offset.u.LowPart, size, protect );
1631 if (!is_current_process( process ))
1633 ERR("Unsupported on other process\n");
1634 return STATUS_ACCESS_DENIED;
1637 /* Check parameters */
1639 if ((offset.u.LowPart & granularity_mask) ||
1640 (*addr_ptr && ((UINT_PTR)*addr_ptr & granularity_mask)))
1641 return STATUS_INVALID_PARAMETER;
1643 SERVER_START_REQ( get_mapping_info )
1645 req->handle = handle;
1646 res = wine_server_call( req );
1647 prot = reply->protect;
1649 size_low = reply->size_low;
1650 size_high = reply->size_high;
1651 header_size = reply->header_size;
1652 shared_file = reply->shared_file;
1653 shared_size = reply->shared_size;
1656 if (res) return res;
1658 if ((res = wine_server_handle_to_fd( handle, 0, &unix_handle, NULL ))) return res;
1660 if (NtQueryVolumeInformationFile( handle, &io, &device_info, sizeof(device_info),
1661 FileFsDeviceInformation ) == STATUS_SUCCESS)
1662 removable = device_info.Characteristics & FILE_REMOVABLE_MEDIA;
1664 if (prot & VPROT_IMAGE)
1670 if ((res = wine_server_handle_to_fd( shared_file, GENERIC_READ, &shared_fd,
1672 res = map_image( handle, unix_handle, base, size_low, header_size,
1673 shared_fd, removable, addr_ptr );
1674 wine_server_release_fd( shared_file, shared_fd );
1675 NtClose( shared_file );
1679 res = map_image( handle, unix_handle, base, size_low, header_size,
1680 -1, removable, addr_ptr );
1682 wine_server_release_fd( handle, unix_handle );
1683 if (!res) *size_ptr = size_low;
1688 ERR("Sizes larger than 4Gb not supported\n");
1690 if ((offset.u.LowPart >= size_low) ||
1691 (*size_ptr > size_low - offset.u.LowPart))
1693 res = STATUS_INVALID_PARAMETER;
1696 if (*size_ptr) size = ROUND_SIZE( offset.u.LowPart, *size_ptr );
1697 else size = size_low - offset.u.LowPart;
1703 case PAGE_READWRITE:
1704 case PAGE_EXECUTE_READWRITE:
1705 if (!(prot & VPROT_WRITE))
1707 res = STATUS_INVALID_PARAMETER;
1713 case PAGE_WRITECOPY:
1715 case PAGE_EXECUTE_READ:
1716 case PAGE_EXECUTE_WRITECOPY:
1717 if (prot & VPROT_READ) break;
1720 res = STATUS_INVALID_PARAMETER;
1724 /* FIXME: If a mapping is created with SEC_RESERVE and a process,
1725 * which has a view of this mapping commits some pages, they will
1726 * appear commited in all other processes, which have the same
1727 * view created. Since we don`t support this yet, we create the
1728 * whole mapping commited.
1730 prot |= VPROT_COMMITTED;
1732 /* Reserve a properly aligned area */
1734 RtlEnterCriticalSection( &csVirtual );
1736 res = map_view( &view, *addr_ptr, size, prot );
1739 RtlLeaveCriticalSection( &csVirtual );
1745 TRACE("handle=%p size=%x offset=%lx%08lx\n",
1746 handle, size, offset.u.HighPart, offset.u.LowPart );
1748 res = map_file_into_view( view, unix_handle, 0, size, offset.QuadPart, prot, removable );
1749 if (res == STATUS_SUCCESS)
1751 if (!removable) /* don't keep handle open on removable media */
1752 NtDuplicateObject( NtCurrentProcess(), handle,
1753 NtCurrentProcess(), &view->mapping,
1754 0, 0, DUPLICATE_SAME_ACCESS );
1756 *addr_ptr = view->base;
1761 ERR( "map_file_into_view %p %x %lx%08lx failed\n",
1762 view->base, size, offset.u.HighPart, offset.u.LowPart );
1763 delete_view( view );
1766 RtlLeaveCriticalSection( &csVirtual );
1769 wine_server_release_fd( handle, unix_handle );
1774 /***********************************************************************
1775 * NtUnmapViewOfSection (NTDLL.@)
1776 * ZwUnmapViewOfSection (NTDLL.@)
1778 NTSTATUS WINAPI NtUnmapViewOfSection( HANDLE process, PVOID addr )
1781 NTSTATUS status = STATUS_INVALID_PARAMETER;
1782 void *base = ROUND_ADDR( addr, page_mask );
1784 if (!is_current_process( process ))
1786 ERR("Unsupported on other process\n");
1787 return STATUS_ACCESS_DENIED;
1789 RtlEnterCriticalSection( &csVirtual );
1790 if ((view = VIRTUAL_FindView( base )) && (base == view->base))
1792 delete_view( view );
1793 status = STATUS_SUCCESS;
1795 RtlLeaveCriticalSection( &csVirtual );
1800 /***********************************************************************
1801 * NtFlushVirtualMemory (NTDLL.@)
1802 * ZwFlushVirtualMemory (NTDLL.@)
1804 NTSTATUS WINAPI NtFlushVirtualMemory( HANDLE process, LPCVOID *addr_ptr,
1805 ULONG *size_ptr, ULONG unknown )
1808 NTSTATUS status = STATUS_SUCCESS;
1809 void *addr = ROUND_ADDR( *addr_ptr, page_mask );
1811 if (!is_current_process( process ))
1813 ERR("Unsupported on other process\n");
1814 return STATUS_ACCESS_DENIED;
1816 RtlEnterCriticalSection( &csVirtual );
1817 if (!(view = VIRTUAL_FindView( addr ))) status = STATUS_INVALID_PARAMETER;
1820 if (!*size_ptr) *size_ptr = view->size;
1822 if (msync( addr, *size_ptr, MS_SYNC )) status = STATUS_NOT_MAPPED_DATA;
1824 RtlLeaveCriticalSection( &csVirtual );
1829 /***********************************************************************
1830 * NtReadVirtualMemory (NTDLL.@)
1831 * ZwReadVirtualMemory (NTDLL.@)
1833 NTSTATUS WINAPI NtReadVirtualMemory( HANDLE process, const void *addr, void *buffer,
1834 SIZE_T size, SIZE_T *bytes_read )
1838 SERVER_START_REQ( read_process_memory )
1840 req->handle = process;
1841 req->addr = (void *)addr;
1842 wine_server_set_reply( req, buffer, size );
1843 if ((status = wine_server_call( req ))) size = 0;
1846 if (bytes_read) *bytes_read = size;
1851 /***********************************************************************
1852 * NtWriteVirtualMemory (NTDLL.@)
1853 * ZwWriteVirtualMemory (NTDLL.@)
1855 NTSTATUS WINAPI NtWriteVirtualMemory( HANDLE process, void *addr, const void *buffer,
1856 SIZE_T size, SIZE_T *bytes_written )
1858 static const unsigned int zero;
1859 unsigned int first_offset, last_offset, first_mask, last_mask;
1862 if (!size) return STATUS_INVALID_PARAMETER;
1864 /* compute the mask for the first int */
1866 first_offset = (unsigned int)addr % sizeof(int);
1867 memset( &first_mask, 0, first_offset );
1869 /* compute the mask for the last int */
1870 last_offset = (size + first_offset) % sizeof(int);
1872 memset( &last_mask, 0xff, last_offset ? last_offset : sizeof(int) );
1874 SERVER_START_REQ( write_process_memory )
1876 req->handle = process;
1877 req->addr = (char *)addr - first_offset;
1878 req->first_mask = first_mask;
1879 req->last_mask = last_mask;
1880 if (first_offset) wine_server_add_data( req, &zero, first_offset );
1881 wine_server_add_data( req, buffer, size );
1882 if (last_offset) wine_server_add_data( req, &zero, sizeof(int) - last_offset );
1884 if ((status = wine_server_call( req ))) size = 0;
1887 if (bytes_written) *bytes_written = size;