2 * Win32 virtual memory functions
4 * Copyright 1997 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>
34 #include <sys/types.h>
35 #ifdef HAVE_SYS_MMAN_H
40 #include "wine/exception.h"
41 #include "wine/unicode.h"
42 #include "wine/library.h"
46 #include "wine/server.h"
47 #include "msvcrt/excpt.h"
48 #include "wine/debug.h"
50 WINE_DEFAULT_DEBUG_CHANNEL(virtual);
51 WINE_DECLARE_DEBUG_CHANNEL(module);
60 struct _FV *next; /* Next view */
61 struct _FV *prev; /* Prev view */
62 void *base; /* Base address */
63 UINT size; /* Size in bytes */
64 UINT flags; /* Allocation flags */
65 HANDLE mapping; /* Handle to the file mapping */
66 HANDLERPROC handlerProc; /* Fault handler */
67 LPVOID handlerArg; /* Fault handler argument */
68 BYTE protect; /* Protection for all pages at allocation time */
69 BYTE prot[1]; /* Protection byte for each page */
73 #define VFLAG_SYSTEM 0x01
74 #define VFLAG_VALLOC 0x02 /* allocated by VirtualAlloc */
76 /* Conversion from VPROT_* to Win32 flags */
77 static const BYTE VIRTUAL_Win32Flags[16] =
79 PAGE_NOACCESS, /* 0 */
80 PAGE_READONLY, /* READ */
81 PAGE_READWRITE, /* WRITE */
82 PAGE_READWRITE, /* READ | WRITE */
83 PAGE_EXECUTE, /* EXEC */
84 PAGE_EXECUTE_READ, /* READ | EXEC */
85 PAGE_EXECUTE_READWRITE, /* WRITE | EXEC */
86 PAGE_EXECUTE_READWRITE, /* READ | WRITE | EXEC */
87 PAGE_WRITECOPY, /* WRITECOPY */
88 PAGE_WRITECOPY, /* READ | WRITECOPY */
89 PAGE_WRITECOPY, /* WRITE | WRITECOPY */
90 PAGE_WRITECOPY, /* READ | WRITE | WRITECOPY */
91 PAGE_EXECUTE_WRITECOPY, /* EXEC | WRITECOPY */
92 PAGE_EXECUTE_WRITECOPY, /* READ | EXEC | WRITECOPY */
93 PAGE_EXECUTE_WRITECOPY, /* WRITE | EXEC | WRITECOPY */
94 PAGE_EXECUTE_WRITECOPY /* READ | WRITE | EXEC | WRITECOPY */
98 static FILE_VIEW *VIRTUAL_FirstView;
99 static CRITICAL_SECTION csVirtual = CRITICAL_SECTION_INIT("csVirtual");
102 /* These are always the same on an i386, and it will be faster this way */
103 # define page_mask 0xfff
104 # define page_shift 12
105 # define page_size 0x1000
107 static UINT page_shift;
108 static UINT page_mask;
109 static UINT page_size;
110 #endif /* __i386__ */
111 #define granularity_mask 0xffff /* Allocation granularity (usually 64k) */
113 #define ROUND_ADDR(addr,mask) \
114 ((void *)((UINT_PTR)(addr) & ~(mask)))
116 #define ROUND_SIZE(addr,size) \
117 (((UINT)(size) + ((UINT_PTR)(addr) & page_mask) + page_mask) & ~page_mask)
119 #define VIRTUAL_DEBUG_DUMP_VIEW(view) \
120 if (!TRACE_ON(virtual)); else VIRTUAL_DumpView(view)
122 static LPVOID VIRTUAL_mmap( int fd, LPVOID start, DWORD size, DWORD offset_low,
123 DWORD offset_high, int prot, int flags, BOOL *removable );
125 /* filter for page-fault exceptions */
126 static WINE_EXCEPTION_FILTER(page_fault)
128 if (GetExceptionCode() == EXCEPTION_ACCESS_VIOLATION)
129 return EXCEPTION_EXECUTE_HANDLER;
130 return EXCEPTION_CONTINUE_SEARCH;
133 /***********************************************************************
136 static const char *VIRTUAL_GetProtStr( BYTE prot )
138 static char buffer[6];
139 buffer[0] = (prot & VPROT_COMMITTED) ? 'c' : '-';
140 buffer[1] = (prot & VPROT_GUARD) ? 'g' : '-';
141 buffer[2] = (prot & VPROT_READ) ? 'r' : '-';
142 buffer[3] = (prot & VPROT_WRITE) ?
143 ((prot & VPROT_WRITECOPY) ? 'w' : 'W') : '-';
144 buffer[4] = (prot & VPROT_EXEC) ? 'x' : '-';
150 /***********************************************************************
153 static void VIRTUAL_DumpView( FILE_VIEW *view )
156 char *addr = view->base;
157 BYTE prot = view->prot[0];
159 DPRINTF( "View: %p - %p", addr, addr + view->size - 1 );
160 if (view->flags & VFLAG_SYSTEM)
161 DPRINTF( " (system)\n" );
162 else if (view->flags & VFLAG_VALLOC)
163 DPRINTF( " (valloc)\n" );
164 else if (view->mapping)
165 DPRINTF( " %d\n", view->mapping );
167 DPRINTF( " (anonymous)\n");
169 for (count = i = 1; i < view->size >> page_shift; i++, count++)
171 if (view->prot[i] == prot) continue;
172 DPRINTF( " %p - %p %s\n",
173 addr, addr + (count << page_shift) - 1, VIRTUAL_GetProtStr(prot) );
174 addr += (count << page_shift);
175 prot = view->prot[i];
179 DPRINTF( " %p - %p %s\n",
180 addr, addr + (count << page_shift) - 1, VIRTUAL_GetProtStr(prot) );
184 /***********************************************************************
187 void VIRTUAL_Dump(void)
190 DPRINTF( "\nDump of all virtual memory views:\n\n" );
191 EnterCriticalSection(&csVirtual);
192 view = VIRTUAL_FirstView;
195 VIRTUAL_DumpView( view );
198 LeaveCriticalSection(&csVirtual);
202 /***********************************************************************
205 * Find the view containing a given address.
211 static FILE_VIEW *VIRTUAL_FindView( const void *addr ) /* [in] Address */
215 EnterCriticalSection(&csVirtual);
216 view = VIRTUAL_FirstView;
219 if (view->base > addr)
224 if (view->base + view->size > addr) break;
227 LeaveCriticalSection(&csVirtual);
232 /***********************************************************************
235 * Create a new view and add it in the linked list.
237 static FILE_VIEW *VIRTUAL_CreateView( void *base, UINT size, UINT flags,
238 BYTE vprot, HANDLE mapping )
240 FILE_VIEW *view, *prev;
242 /* Create the view structure */
244 assert( !((unsigned int)base & page_mask) );
245 assert( !(size & page_mask) );
247 if (!(view = (FILE_VIEW *)malloc( sizeof(*view) + size - 1 ))) return NULL;
249 view->size = size << page_shift;
251 view->mapping = mapping;
252 view->protect = vprot;
253 view->handlerProc = NULL;
254 memset( view->prot, vprot, size );
256 /* Duplicate the mapping handle */
259 !DuplicateHandle( GetCurrentProcess(), view->mapping,
260 GetCurrentProcess(), &view->mapping,
261 0, FALSE, DUPLICATE_SAME_ACCESS ))
267 /* Insert it in the linked list */
269 EnterCriticalSection(&csVirtual);
270 if (!VIRTUAL_FirstView || (VIRTUAL_FirstView->base > base))
272 view->next = VIRTUAL_FirstView;
274 if (view->next) view->next->prev = view;
275 VIRTUAL_FirstView = view;
279 prev = VIRTUAL_FirstView;
280 while (prev->next && (prev->next->base < base)) prev = prev->next;
281 view->next = prev->next;
283 if (view->next) view->next->prev = view;
286 LeaveCriticalSection(&csVirtual);
287 VIRTUAL_DEBUG_DUMP_VIEW( view );
292 /***********************************************************************
299 static void VIRTUAL_DeleteView(
300 FILE_VIEW *view /* [in] View */
302 if (!(view->flags & VFLAG_SYSTEM))
303 munmap( (void *)view->base, view->size );
304 EnterCriticalSection(&csVirtual);
305 if (view->next) view->next->prev = view->prev;
306 if (view->prev) view->prev->next = view->next;
307 else VIRTUAL_FirstView = view->next;
308 LeaveCriticalSection(&csVirtual);
309 if (view->mapping) NtClose( view->mapping );
314 /***********************************************************************
315 * VIRTUAL_GetUnixProt
317 * Convert page protections to protection for mmap/mprotect.
319 static int VIRTUAL_GetUnixProt( BYTE vprot )
322 if ((vprot & VPROT_COMMITTED) && !(vprot & VPROT_GUARD))
324 if (vprot & VPROT_READ) prot |= PROT_READ;
325 if (vprot & VPROT_WRITE) prot |= PROT_WRITE;
326 if (vprot & VPROT_WRITECOPY) prot |= PROT_WRITE;
327 if (vprot & VPROT_EXEC) prot |= PROT_EXEC;
333 /***********************************************************************
334 * VIRTUAL_GetWin32Prot
336 * Convert page protections to Win32 flags.
341 static void VIRTUAL_GetWin32Prot(
342 BYTE vprot, /* [in] Page protection flags */
343 DWORD *protect, /* [out] Location to store Win32 protection flags */
344 DWORD *state /* [out] Location to store mem state flag */
347 *protect = VIRTUAL_Win32Flags[vprot & 0x0f];
348 /* if (vprot & VPROT_GUARD) *protect |= PAGE_GUARD;*/
349 if (vprot & VPROT_NOCACHE) *protect |= PAGE_NOCACHE;
351 if (vprot & VPROT_GUARD) *protect = PAGE_NOACCESS;
354 if (state) *state = (vprot & VPROT_COMMITTED) ? MEM_COMMIT : MEM_RESERVE;
358 /***********************************************************************
361 * Build page protections from Win32 flags.
364 * Value of page protection flags
366 static BYTE VIRTUAL_GetProt(
367 DWORD protect /* [in] Win32 protection flags */
371 switch(protect & 0xff)
377 vprot = VPROT_READ | VPROT_WRITE;
380 /* MSDN CreateFileMapping() states that if PAGE_WRITECOPY is given,
381 * that the hFile must have been opened with GENERIC_READ and
382 * GENERIC_WRITE access. This is WRONG as tests show that you
383 * only need GENERIC_READ access (at least for Win9x,
384 * FIXME: what about NT?). Thus, we don't put VPROT_WRITE in
385 * PAGE_WRITECOPY and PAGE_EXECUTE_WRITECOPY.
387 vprot = VPROT_READ | VPROT_WRITECOPY;
392 case PAGE_EXECUTE_READ:
393 vprot = VPROT_EXEC | VPROT_READ;
395 case PAGE_EXECUTE_READWRITE:
396 vprot = VPROT_EXEC | VPROT_READ | VPROT_WRITE;
398 case PAGE_EXECUTE_WRITECOPY:
399 /* See comment for PAGE_WRITECOPY above */
400 vprot = VPROT_EXEC | VPROT_READ | VPROT_WRITECOPY;
407 if (protect & PAGE_GUARD) vprot |= VPROT_GUARD;
408 if (protect & PAGE_NOCACHE) vprot |= VPROT_NOCACHE;
413 /***********************************************************************
416 * Change the protection of a range of pages.
422 static BOOL VIRTUAL_SetProt( FILE_VIEW *view, /* [in] Pointer to view */
423 void *base, /* [in] Starting address */
424 UINT size, /* [in] Size in bytes */
425 BYTE vprot ) /* [in] Protections to use */
428 base, (char *)base + size - 1, VIRTUAL_GetProtStr( vprot ) );
430 if (mprotect( base, size, VIRTUAL_GetUnixProt(vprot) ))
431 return FALSE; /* FIXME: last error */
433 memset( view->prot + (((char *)base - (char *)view->base) >> page_shift),
434 vprot, size >> page_shift );
435 VIRTUAL_DEBUG_DUMP_VIEW( view );
440 /***********************************************************************
443 * Create an anonymous mapping aligned to the allocation granularity.
445 static void *anon_mmap_aligned( void *base, unsigned int size, int prot, int flags )
448 unsigned int view_size = size + (base ? 0 : granularity_mask + 1);
450 if ((ptr = wine_anon_mmap( base, view_size, prot, flags )) == (void *)-1)
452 /* KB: Q125713, 25-SEP-1995, "Common File Mapping Problems and
453 * Platform Differences":
454 * Windows NT: ERROR_INVALID_PARAMETER
455 * Windows 95: ERROR_INVALID_ADDRESS.
457 if (errno == ENOMEM) SetLastError( ERROR_OUTOFMEMORY );
460 if (GetVersion() & 0x80000000) /* win95 */
461 SetLastError( ERROR_INVALID_ADDRESS );
463 SetLastError( ERROR_INVALID_PARAMETER );
470 /* Release the extra memory while keeping the range
471 * starting on the granularity boundary. */
472 if ((unsigned int)ptr & granularity_mask)
474 unsigned int extra = granularity_mask + 1 - ((unsigned int)ptr & granularity_mask);
475 munmap( ptr, extra );
476 ptr = (char *)ptr + extra;
479 if (view_size > size)
480 munmap( (char *)ptr + size, view_size - size );
482 else if (ptr != base)
484 /* We couldn't get the address we wanted */
485 munmap( ptr, view_size );
486 SetLastError( ERROR_INVALID_ADDRESS );
493 /***********************************************************************
496 * Map an executable (PE format) image into memory.
498 static LPVOID map_image( HANDLE hmapping, int fd, char *base, DWORD total_size,
499 DWORD header_size, HANDLE shared_file, DWORD shared_size,
502 IMAGE_DOS_HEADER *dos;
503 IMAGE_NT_HEADERS *nt;
504 IMAGE_SECTION_HEADER *sec;
505 IMAGE_DATA_DIRECTORY *imports;
507 DWORD err = GetLastError();
512 SetLastError( ERROR_BAD_EXE_FORMAT ); /* generic error */
514 /* zero-map the whole range */
516 if (base < (char *)0x110000) base = 0; /* make sure the DOS area remains free */
517 if ((ptr = wine_anon_mmap( base, total_size,
518 PROT_READ | PROT_WRITE | PROT_EXEC, 0 )) == (char *)-1)
520 ptr = wine_anon_mmap( NULL, total_size,
521 PROT_READ | PROT_WRITE | PROT_EXEC, 0 );
522 if (ptr == (char *)-1)
524 ERR_(module)("Not enough memory for module (%ld bytes)\n", total_size);
528 TRACE_(module)( "mapped PE file at %p-%p\n", ptr, ptr + total_size );
532 if (VIRTUAL_mmap( fd, ptr, header_size, 0, 0, PROT_READ,
533 MAP_PRIVATE | MAP_FIXED, &removable ) == (char *)-1) goto error;
534 dos = (IMAGE_DOS_HEADER *)ptr;
535 nt = (IMAGE_NT_HEADERS *)(ptr + dos->e_lfanew);
536 if ((char *)(nt + 1) > ptr + header_size) goto error;
538 sec = (IMAGE_SECTION_HEADER*)((char*)&nt->OptionalHeader+nt->FileHeader.SizeOfOptionalHeader);
539 if ((char *)(sec + nt->FileHeader.NumberOfSections) > ptr + header_size) goto error;
541 imports = nt->OptionalHeader.DataDirectory + IMAGE_DIRECTORY_ENTRY_IMPORT;
542 if (!imports->Size || !imports->VirtualAddress) imports = NULL;
544 /* check the architecture */
546 if (nt->FileHeader.Machine != IMAGE_FILE_MACHINE_I386)
548 MESSAGE("Trying to load PE image for unsupported architecture (");
549 switch (nt->FileHeader.Machine)
551 case IMAGE_FILE_MACHINE_UNKNOWN: MESSAGE("Unknown"); break;
552 case IMAGE_FILE_MACHINE_I860: MESSAGE("I860"); break;
553 case IMAGE_FILE_MACHINE_R3000: MESSAGE("R3000"); break;
554 case IMAGE_FILE_MACHINE_R4000: MESSAGE("R4000"); break;
555 case IMAGE_FILE_MACHINE_R10000: MESSAGE("R10000"); break;
556 case IMAGE_FILE_MACHINE_ALPHA: MESSAGE("Alpha"); break;
557 case IMAGE_FILE_MACHINE_POWERPC: MESSAGE("PowerPC"); break;
558 default: MESSAGE("Unknown-%04x", nt->FileHeader.Machine); break;
564 /* retrieve the shared sections file */
568 if ((shared_fd = FILE_GetUnixHandle( shared_file, GENERIC_READ )) == -1) goto error;
569 CloseHandle( shared_file ); /* we no longer need it */
573 /* map all the sections */
575 for (i = pos = 0; i < nt->FileHeader.NumberOfSections; i++, sec++)
579 /* a few sanity checks */
580 size = sec->VirtualAddress + ROUND_SIZE( sec->VirtualAddress, sec->Misc.VirtualSize );
581 if (sec->VirtualAddress > total_size || size > total_size || size < sec->VirtualAddress)
583 ERR_(module)( "Section %.8s too large (%lx+%lx/%lx)\n",
584 sec->Name, sec->VirtualAddress, sec->Misc.VirtualSize, total_size );
588 if ((sec->Characteristics & IMAGE_SCN_MEM_SHARED) &&
589 (sec->Characteristics & IMAGE_SCN_MEM_WRITE))
591 size = ROUND_SIZE( 0, sec->Misc.VirtualSize );
592 TRACE_(module)( "mapping shared section %.8s at %p off %lx (%x) size %lx (%lx) flags %lx\n",
593 sec->Name, ptr + sec->VirtualAddress,
594 sec->PointerToRawData, pos, sec->SizeOfRawData,
595 size, sec->Characteristics );
596 if (VIRTUAL_mmap( shared_fd, ptr + sec->VirtualAddress, size,
597 pos, 0, PROT_READ|PROT_WRITE|PROT_EXEC,
598 MAP_SHARED|MAP_FIXED, NULL ) == (void *)-1)
600 ERR_(module)( "Could not map shared section %.8s\n", sec->Name );
604 /* check if the import directory falls inside this section */
605 if (imports && imports->VirtualAddress >= sec->VirtualAddress &&
606 imports->VirtualAddress < sec->VirtualAddress + size)
608 DWORD base = imports->VirtualAddress & ~page_mask;
609 DWORD end = imports->VirtualAddress + ROUND_SIZE( imports->VirtualAddress,
611 if (end > sec->VirtualAddress + size) end = sec->VirtualAddress + size;
612 if (end > base) VIRTUAL_mmap( shared_fd, ptr + base, end - base,
613 pos, 0, PROT_READ|PROT_WRITE|PROT_EXEC,
614 MAP_PRIVATE|MAP_FIXED, NULL );
620 if (sec->Characteristics & IMAGE_SCN_CNT_UNINITIALIZED_DATA) continue;
621 if (!sec->PointerToRawData || !sec->SizeOfRawData) continue;
623 TRACE_(module)( "mapping section %.8s at %p off %lx size %lx flags %lx\n",
624 sec->Name, ptr + sec->VirtualAddress,
625 sec->PointerToRawData, sec->SizeOfRawData,
626 sec->Characteristics );
628 /* Note: if the section is not aligned properly VIRTUAL_mmap will magically
629 * fall back to read(), so we don't need to check anything here.
631 if (VIRTUAL_mmap( fd, ptr + sec->VirtualAddress, sec->SizeOfRawData,
632 sec->PointerToRawData, 0, PROT_READ|PROT_WRITE|PROT_EXEC,
633 MAP_PRIVATE | MAP_FIXED, &removable ) == (void *)-1)
635 ERR_(module)( "Could not map section %.8s, file probably truncated\n", sec->Name );
639 if ((sec->SizeOfRawData < sec->Misc.VirtualSize) && (sec->SizeOfRawData & page_mask))
641 DWORD end = ROUND_SIZE( 0, sec->SizeOfRawData );
642 if (end > sec->Misc.VirtualSize) end = sec->Misc.VirtualSize;
643 TRACE_(module)("clearing %p - %p\n",
644 ptr + sec->VirtualAddress + sec->SizeOfRawData,
645 ptr + sec->VirtualAddress + end );
646 memset( ptr + sec->VirtualAddress + sec->SizeOfRawData, 0,
647 end - sec->SizeOfRawData );
651 if (removable) hmapping = 0; /* don't keep handle open on removable media */
652 if (!(view = VIRTUAL_CreateView( ptr, total_size, 0,
653 VPROT_COMMITTED|VPROT_READ|VPROT_WRITE|VPROT_WRITECOPY,
656 SetLastError( ERROR_OUTOFMEMORY );
660 SetLastError( err ); /* restore last error */
662 if (shared_fd != -1) close( shared_fd );
666 if (ptr != (char *)-1) munmap( ptr, total_size );
668 if (shared_fd != -1) close( shared_fd );
669 if (shared_file) CloseHandle( shared_file );
674 /***********************************************************************
678 DECL_GLOBAL_CONSTRUCTOR(VIRTUAL_Init)
680 page_size = getpagesize();
681 page_mask = page_size - 1;
682 /* Make sure we have a power of 2 */
683 assert( !(page_size & page_mask) );
685 while ((1 << page_shift) != page_size) page_shift++;
687 #endif /* page_mask */
690 /***********************************************************************
691 * VIRTUAL_SetFaultHandler
693 BOOL VIRTUAL_SetFaultHandler( LPCVOID addr, HANDLERPROC proc, LPVOID arg )
697 if (!(view = VIRTUAL_FindView( addr ))) return FALSE;
698 view->handlerProc = proc;
699 view->handlerArg = arg;
703 /***********************************************************************
704 * VIRTUAL_HandleFault
706 DWORD VIRTUAL_HandleFault( LPCVOID addr )
708 FILE_VIEW *view = VIRTUAL_FindView( addr );
709 DWORD ret = EXCEPTION_ACCESS_VIOLATION;
713 if (view->handlerProc)
715 if (view->handlerProc(view->handlerArg, addr)) ret = 0; /* handled */
719 BYTE vprot = view->prot[((char *)addr - (char *)view->base) >> page_shift];
720 void *page = (void *)((UINT_PTR)addr & ~page_mask);
721 char *stack = (char *)NtCurrentTeb()->stack_base + SIGNAL_STACK_SIZE + page_mask + 1;
722 if (vprot & VPROT_GUARD)
724 VIRTUAL_SetProt( view, page, page_mask + 1, vprot & ~VPROT_GUARD );
725 ret = STATUS_GUARD_PAGE_VIOLATION;
727 /* is it inside the stack guard pages? */
728 if (((char *)addr >= stack) && ((char *)addr < stack + 2*(page_mask+1)))
729 ret = STATUS_STACK_OVERFLOW;
737 /***********************************************************************
740 * Linux kernels before 2.4.x can support non page-aligned offsets, as
741 * long as the offset is aligned to the filesystem block size. This is
742 * a big performance gain so we want to take advantage of it.
744 * However, when we use 64-bit file support this doesn't work because
745 * glibc rejects unaligned offsets. Also glibc 2.1.3 mmap64 is broken
746 * in that it rounds unaligned offsets down to a page boundary. For
747 * these reasons we do a direct system call here.
749 static void *unaligned_mmap( void *addr, size_t length, unsigned int prot,
750 unsigned int flags, int fd, unsigned int offset_low,
751 unsigned int offset_high )
753 #if defined(linux) && defined(__i386__) && defined(__GNUC__)
754 if (!offset_high && (offset_low & page_mask))
769 args.length = length;
773 args.offset = offset_low;
775 __asm__ __volatile__("push %%ebx\n\t"
780 : "0" (90), /* SYS_mmap */
782 if (ret < 0 && ret > -4096)
790 return mmap( addr, length, prot, flags, fd, ((off_t)offset_high << 32) | offset_low );
794 /***********************************************************************
797 * Wrapper for mmap() that handles anonymous mappings portably,
798 * and falls back to read if mmap of a file fails.
800 static LPVOID VIRTUAL_mmap( int fd, LPVOID start, DWORD size,
801 DWORD offset_low, DWORD offset_high,
802 int prot, int flags, BOOL *removable )
807 BOOL is_shared_write = FALSE;
809 if (fd == -1) return wine_anon_mmap( start, size, prot, flags );
811 if (prot & PROT_WRITE)
814 if (flags & MAP_SHARED) is_shared_write = TRUE;
817 if (!(flags & MAP_PRIVATE)) is_shared_write = TRUE;
821 if (removable && *removable)
823 /* if on removable media, try using read instead of mmap */
824 if (!is_shared_write) goto fake_mmap;
828 if ((ret = unaligned_mmap( start, size, prot, flags, fd,
829 offset_low, offset_high )) != (LPVOID)-1) return ret;
831 /* mmap() failed; if this is because the file offset is not */
832 /* page-aligned (EINVAL), or because the underlying filesystem */
833 /* does not support mmap() (ENOEXEC,ENODEV), we do it by hand. */
835 if ((errno != ENOEXEC) && (errno != EINVAL) && (errno != ENODEV)) return ret;
836 if (is_shared_write) return ret; /* we cannot fake shared write mappings */
839 /* Reserve the memory with an anonymous mmap */
840 ret = wine_anon_mmap( start, size, PROT_READ | PROT_WRITE, flags );
841 if (ret == (LPVOID)-1) return ret;
842 /* Now read in the file */
843 offset = ((off_t)offset_high << 32) | offset_low;
844 if ((pos = lseek( fd, offset, SEEK_SET )) == -1)
849 read( fd, ret, size );
850 lseek( fd, pos, SEEK_SET ); /* Restore the file pointer */
851 mprotect( ret, size, prot ); /* Set the right protection */
856 /***********************************************************************
857 * VirtualAlloc (KERNEL32.@)
858 * Reserves or commits a region of pages in virtual address space
861 * Base address of allocated region of pages
864 LPVOID WINAPI VirtualAlloc(
865 LPVOID addr, /* [in] Address of region to reserve or commit */
866 DWORD size, /* [in] Size of region */
867 DWORD type, /* [in] Type of allocation */
868 DWORD protect)/* [in] Type of access protection */
874 TRACE("%p %08lx %lx %08lx\n", addr, size, type, protect );
876 /* Round parameters to a page boundary */
878 if (size > 0x7fc00000) /* 2Gb - 4Mb */
880 SetLastError( ERROR_OUTOFMEMORY );
885 if (type & MEM_RESERVE) /* Round down to 64k boundary */
886 base = ROUND_ADDR( addr, granularity_mask );
888 base = ROUND_ADDR( addr, page_mask );
889 size = (((UINT_PTR)addr + size + page_mask) & ~page_mask) - (UINT_PTR)base;
890 if ((base <= (char *)granularity_mask) || (base + size < base))
892 /* disallow low 64k and wrap-around */
893 SetLastError( ERROR_INVALID_PARAMETER );
900 size = (size + page_mask) & ~page_mask;
903 if (type & MEM_TOP_DOWN) {
904 /* FIXME: MEM_TOP_DOWN allocates the largest possible address.
905 * Is there _ANY_ way to do it with UNIX mmap()?
907 WARN("MEM_TOP_DOWN ignored\n");
908 type &= ~MEM_TOP_DOWN;
910 /* Compute the alloc type flags */
912 if (!(type & (MEM_COMMIT | MEM_RESERVE | MEM_SYSTEM)) ||
913 (type & ~(MEM_COMMIT | MEM_RESERVE | MEM_SYSTEM)))
915 ERR("called with wrong alloc type flags (%08lx) !\n", type);
916 SetLastError( ERROR_INVALID_PARAMETER );
919 if (type & (MEM_COMMIT | MEM_SYSTEM))
920 vprot = VIRTUAL_GetProt( protect ) | VPROT_COMMITTED;
923 /* Reserve the memory */
925 if ((type & MEM_RESERVE) || !base)
927 if (type & MEM_SYSTEM)
929 if (!(view = VIRTUAL_CreateView( base, size, VFLAG_VALLOC | VFLAG_SYSTEM, vprot, 0 )))
931 SetLastError( ERROR_OUTOFMEMORY );
936 ptr = anon_mmap_aligned( base, size, VIRTUAL_GetUnixProt( vprot ), 0 );
937 if (ptr == (void *)-1) return NULL;
939 if (!(view = VIRTUAL_CreateView( ptr, size, VFLAG_VALLOC, vprot, 0 )))
942 SetLastError( ERROR_OUTOFMEMORY );
948 /* Commit the pages */
950 if (!(view = VIRTUAL_FindView( base )) ||
951 (base + size > (char *)view->base + view->size))
953 SetLastError( ERROR_INVALID_ADDRESS );
957 if (!VIRTUAL_SetProt( view, base, size, vprot )) return NULL;
962 /***********************************************************************
963 * VirtualAllocEx (KERNEL32.@)
965 * Seems to be just as VirtualAlloc, but with process handle.
967 LPVOID WINAPI VirtualAllocEx(
968 HANDLE hProcess, /* [in] Handle of process to do mem operation */
969 LPVOID addr, /* [in] Address of region to reserve or commit */
970 DWORD size, /* [in] Size of region */
971 DWORD type, /* [in] Type of allocation */
972 DWORD protect /* [in] Type of access protection */
974 if (MapProcessHandle( hProcess ) == GetCurrentProcessId())
975 return VirtualAlloc( addr, size, type, protect );
976 ERR("Unsupported on other process\n");
981 /***********************************************************************
982 * VirtualFree (KERNEL32.@)
983 * Release or decommits a region of pages in virtual address space.
989 BOOL WINAPI VirtualFree(
990 LPVOID addr, /* [in] Address of region of committed pages */
991 DWORD size, /* [in] Size of region */
992 DWORD type /* [in] Type of operation */
997 TRACE("%p %08lx %lx\n", addr, size, type );
999 /* Fix the parameters */
1001 size = ROUND_SIZE( addr, size );
1002 base = ROUND_ADDR( addr, page_mask );
1004 if (!(view = VIRTUAL_FindView( base )) ||
1005 (base + size > (char *)view->base + view->size) ||
1006 !(view->flags & VFLAG_VALLOC))
1008 SetLastError( ERROR_INVALID_PARAMETER );
1012 /* Check the type */
1014 if (type & MEM_SYSTEM)
1016 view->flags |= VFLAG_SYSTEM;
1017 type &= ~MEM_SYSTEM;
1020 if ((type != MEM_DECOMMIT) && (type != MEM_RELEASE))
1022 ERR("called with wrong free type flags (%08lx) !\n", type);
1023 SetLastError( ERROR_INVALID_PARAMETER );
1027 /* Free the pages */
1029 if (type == MEM_RELEASE)
1031 if (size || (base != view->base))
1033 SetLastError( ERROR_INVALID_PARAMETER );
1036 VIRTUAL_DeleteView( view );
1040 /* Decommit the pages by remapping zero-pages instead */
1042 if (wine_anon_mmap( (LPVOID)base, size, VIRTUAL_GetUnixProt(0), MAP_FIXED ) != (LPVOID)base)
1043 ERR( "Could not remap pages, expect trouble\n" );
1044 return VIRTUAL_SetProt( view, base, size, 0 );
1048 /***********************************************************************
1049 * VirtualLock (KERNEL32.@)
1050 * Locks the specified region of virtual address space
1053 * Always returns TRUE
1059 BOOL WINAPI VirtualLock(
1060 LPVOID addr, /* [in] Address of first byte of range to lock */
1061 DWORD size /* [in] Number of bytes in range to lock */
1067 /***********************************************************************
1068 * VirtualUnlock (KERNEL32.@)
1069 * Unlocks a range of pages in the virtual address space
1072 * Always returns TRUE
1078 BOOL WINAPI VirtualUnlock(
1079 LPVOID addr, /* [in] Address of first byte of range */
1080 DWORD size /* [in] Number of bytes in range */
1086 /***********************************************************************
1087 * VirtualProtect (KERNEL32.@)
1088 * Changes the access protection on a region of committed pages
1094 BOOL WINAPI VirtualProtect(
1095 LPVOID addr, /* [in] Address of region of committed pages */
1096 DWORD size, /* [in] Size of region */
1097 DWORD new_prot, /* [in] Desired access protection */
1098 LPDWORD old_prot /* [out] Address of variable to get old protection */
1106 TRACE("%p %08lx %08lx\n", addr, size, new_prot );
1108 /* Fix the parameters */
1110 size = ROUND_SIZE( addr, size );
1111 base = ROUND_ADDR( addr, page_mask );
1113 if (!(view = VIRTUAL_FindView( base )) ||
1114 (base + size > (char *)view->base + view->size))
1116 SetLastError( ERROR_INVALID_PARAMETER );
1120 /* Make sure all the pages are committed */
1122 p = view->prot + ((base - (char *)view->base) >> page_shift);
1123 VIRTUAL_GetWin32Prot( *p, &prot, NULL );
1124 for (i = size >> page_shift; i; i--, p++)
1126 if (!(*p & VPROT_COMMITTED))
1128 SetLastError( ERROR_INVALID_PARAMETER );
1133 if (old_prot) *old_prot = prot;
1134 vprot = VIRTUAL_GetProt( new_prot ) | VPROT_COMMITTED;
1135 return VIRTUAL_SetProt( view, base, size, vprot );
1139 /***********************************************************************
1140 * VirtualProtectEx (KERNEL32.@)
1141 * Changes the access protection on a region of committed pages in the
1142 * virtual address space of a specified process
1148 BOOL WINAPI VirtualProtectEx(
1149 HANDLE handle, /* [in] Handle of process */
1150 LPVOID addr, /* [in] Address of region of committed pages */
1151 DWORD size, /* [in] Size of region */
1152 DWORD new_prot, /* [in] Desired access protection */
1153 LPDWORD old_prot /* [out] Address of variable to get old protection */ )
1155 if (MapProcessHandle( handle ) == GetCurrentProcessId())
1156 return VirtualProtect( addr, size, new_prot, old_prot );
1157 ERR("Unsupported on other process\n");
1162 /***********************************************************************
1163 * VirtualQuery (KERNEL32.@)
1164 * Provides info about a range of pages in virtual address space
1167 * Number of bytes returned in information buffer
1168 * or 0 if addr is >= 0xc0000000 (kernel space).
1170 DWORD WINAPI VirtualQuery(
1171 LPCVOID addr, /* [in] Address of region */
1172 LPMEMORY_BASIC_INFORMATION info, /* [out] Address of info buffer */
1173 DWORD len /* [in] Size of buffer */
1176 char *base, *alloc_base = 0;
1179 if (addr >= (void*)0xc0000000) return 0;
1181 base = ROUND_ADDR( addr, page_mask );
1183 /* Find the view containing the address */
1185 EnterCriticalSection(&csVirtual);
1186 view = VIRTUAL_FirstView;
1191 size = (char *)0xffff0000 - alloc_base;
1194 if ((char *)view->base > base)
1196 size = (char *)view->base - alloc_base;
1200 if ((char *)view->base + view->size > base)
1202 alloc_base = view->base;
1206 alloc_base = (char *)view->base + view->size;
1209 LeaveCriticalSection(&csVirtual);
1211 /* Fill the info structure */
1215 info->State = MEM_FREE;
1217 info->AllocationProtect = 0;
1222 BYTE vprot = view->prot[(base - alloc_base) >> page_shift];
1223 VIRTUAL_GetWin32Prot( vprot, &info->Protect, &info->State );
1224 for (size = base - alloc_base; size < view->size; size += page_mask+1)
1225 if (view->prot[size >> page_shift] != vprot) break;
1226 info->AllocationProtect = view->protect;
1227 info->Type = MEM_PRIVATE; /* FIXME */
1230 info->BaseAddress = (LPVOID)base;
1231 info->AllocationBase = (LPVOID)alloc_base;
1232 info->RegionSize = size - (base - alloc_base);
1233 return sizeof(*info);
1237 /***********************************************************************
1238 * VirtualQueryEx (KERNEL32.@)
1239 * Provides info about a range of pages in virtual address space of a
1243 * Number of bytes returned in information buffer
1245 DWORD WINAPI VirtualQueryEx(
1246 HANDLE handle, /* [in] Handle of process */
1247 LPCVOID addr, /* [in] Address of region */
1248 LPMEMORY_BASIC_INFORMATION info, /* [out] Address of info buffer */
1249 DWORD len /* [in] Size of buffer */ )
1251 if (MapProcessHandle( handle ) == GetCurrentProcessId())
1252 return VirtualQuery( addr, info, len );
1253 ERR("Unsupported on other process\n");
1258 /***********************************************************************
1259 * IsBadReadPtr (KERNEL32.@)
1262 * FALSE: Process has read access to entire block
1265 BOOL WINAPI IsBadReadPtr(
1266 LPCVOID ptr, /* [in] Address of memory block */
1267 UINT size ) /* [in] Size of block */
1269 if (!size) return FALSE; /* handle 0 size case w/o reference */
1272 volatile const char *p = ptr;
1276 while (count > page_size)
1283 dummy = p[count - 1];
1285 __EXCEPT(page_fault) { return TRUE; }
1291 /***********************************************************************
1292 * IsBadWritePtr (KERNEL32.@)
1295 * FALSE: Process has write access to entire block
1298 BOOL WINAPI IsBadWritePtr(
1299 LPVOID ptr, /* [in] Address of memory block */
1300 UINT size ) /* [in] Size of block in bytes */
1302 if (!size) return FALSE; /* handle 0 size case w/o reference */
1305 volatile char *p = ptr;
1308 while (count > page_size)
1317 __EXCEPT(page_fault) { return TRUE; }
1323 /***********************************************************************
1324 * IsBadHugeReadPtr (KERNEL32.@)
1326 * FALSE: Process has read access to entire block
1329 BOOL WINAPI IsBadHugeReadPtr(
1330 LPCVOID ptr, /* [in] Address of memory block */
1331 UINT size /* [in] Size of block */
1333 return IsBadReadPtr( ptr, size );
1337 /***********************************************************************
1338 * IsBadHugeWritePtr (KERNEL32.@)
1340 * FALSE: Process has write access to entire block
1343 BOOL WINAPI IsBadHugeWritePtr(
1344 LPVOID ptr, /* [in] Address of memory block */
1345 UINT size /* [in] Size of block */
1347 return IsBadWritePtr( ptr, size );
1351 /***********************************************************************
1352 * IsBadCodePtr (KERNEL32.@)
1355 * FALSE: Process has read access to specified memory
1358 BOOL WINAPI IsBadCodePtr( FARPROC ptr ) /* [in] Address of function */
1360 return IsBadReadPtr( ptr, 1 );
1364 /***********************************************************************
1365 * IsBadStringPtrA (KERNEL32.@)
1368 * FALSE: Read access to all bytes in string
1371 BOOL WINAPI IsBadStringPtrA(
1372 LPCSTR str, /* [in] Address of string */
1373 UINT max ) /* [in] Maximum size of string */
1377 volatile const char *p = str;
1378 while (p != str + max) if (!*p++) break;
1380 __EXCEPT(page_fault) { return TRUE; }
1386 /***********************************************************************
1387 * IsBadStringPtrW (KERNEL32.@)
1388 * See IsBadStringPtrA
1390 BOOL WINAPI IsBadStringPtrW( LPCWSTR str, UINT max )
1394 volatile const WCHAR *p = str;
1395 while (p != str + max) if (!*p++) break;
1397 __EXCEPT(page_fault) { return TRUE; }
1403 /***********************************************************************
1404 * CreateFileMappingA (KERNEL32.@)
1405 * Creates a named or unnamed file-mapping object for the specified file
1409 * 0: Mapping object does not exist
1412 HANDLE WINAPI CreateFileMappingA(
1413 HANDLE hFile, /* [in] Handle of file to map */
1414 SECURITY_ATTRIBUTES *sa, /* [in] Optional security attributes*/
1415 DWORD protect, /* [in] Protection for mapping object */
1416 DWORD size_high, /* [in] High-order 32 bits of object size */
1417 DWORD size_low, /* [in] Low-order 32 bits of object size */
1418 LPCSTR name /* [in] Name of file-mapping object */ )
1420 WCHAR buffer[MAX_PATH];
1422 if (!name) return CreateFileMappingW( hFile, sa, protect, size_high, size_low, NULL );
1424 if (!MultiByteToWideChar( CP_ACP, 0, name, -1, buffer, MAX_PATH ))
1426 SetLastError( ERROR_FILENAME_EXCED_RANGE );
1429 return CreateFileMappingW( hFile, sa, protect, size_high, size_low, buffer );
1433 /***********************************************************************
1434 * CreateFileMappingW (KERNEL32.@)
1435 * See CreateFileMappingA
1437 HANDLE WINAPI CreateFileMappingW( HANDLE hFile, LPSECURITY_ATTRIBUTES sa,
1438 DWORD protect, DWORD size_high,
1439 DWORD size_low, LPCWSTR name )
1443 DWORD len = name ? strlenW(name) : 0;
1445 /* Check parameters */
1447 TRACE("(%x,%p,%08lx,%08lx%08lx,%s)\n",
1448 hFile, sa, protect, size_high, size_low, debugstr_w(name) );
1452 SetLastError( ERROR_FILENAME_EXCED_RANGE );
1456 vprot = VIRTUAL_GetProt( protect );
1457 if (protect & SEC_RESERVE)
1459 if (hFile != INVALID_HANDLE_VALUE)
1461 SetLastError( ERROR_INVALID_PARAMETER );
1465 else vprot |= VPROT_COMMITTED;
1466 if (protect & SEC_NOCACHE) vprot |= VPROT_NOCACHE;
1467 if (protect & SEC_IMAGE) vprot |= VPROT_IMAGE;
1469 /* Create the server object */
1471 if (hFile == INVALID_HANDLE_VALUE) hFile = 0;
1472 SERVER_START_REQ( create_mapping )
1474 req->file_handle = hFile;
1475 req->size_high = size_high;
1476 req->size_low = size_low;
1477 req->protect = vprot;
1478 req->inherit = (sa && (sa->nLength>=sizeof(*sa)) && sa->bInheritHandle);
1479 wine_server_add_data( req, name, len * sizeof(WCHAR) );
1481 wine_server_call_err( req );
1482 ret = reply->handle;
1489 /***********************************************************************
1490 * OpenFileMappingA (KERNEL32.@)
1491 * Opens a named file-mapping object.
1497 HANDLE WINAPI OpenFileMappingA(
1498 DWORD access, /* [in] Access mode */
1499 BOOL inherit, /* [in] Inherit flag */
1500 LPCSTR name ) /* [in] Name of file-mapping object */
1502 WCHAR buffer[MAX_PATH];
1504 if (!name) return OpenFileMappingW( access, inherit, NULL );
1506 if (!MultiByteToWideChar( CP_ACP, 0, name, -1, buffer, MAX_PATH ))
1508 SetLastError( ERROR_FILENAME_EXCED_RANGE );
1511 return OpenFileMappingW( access, inherit, buffer );
1515 /***********************************************************************
1516 * OpenFileMappingW (KERNEL32.@)
1517 * See OpenFileMappingA
1519 HANDLE WINAPI OpenFileMappingW( DWORD access, BOOL inherit, LPCWSTR name)
1522 DWORD len = name ? strlenW(name) : 0;
1523 if (len >= MAX_PATH)
1525 SetLastError( ERROR_FILENAME_EXCED_RANGE );
1528 SERVER_START_REQ( open_mapping )
1530 req->access = access;
1531 req->inherit = inherit;
1532 wine_server_add_data( req, name, len * sizeof(WCHAR) );
1533 wine_server_call_err( req );
1534 ret = reply->handle;
1541 /***********************************************************************
1542 * MapViewOfFile (KERNEL32.@)
1543 * Maps a view of a file into the address space
1546 * Starting address of mapped view
1549 LPVOID WINAPI MapViewOfFile(
1550 HANDLE mapping, /* [in] File-mapping object to map */
1551 DWORD access, /* [in] Access mode */
1552 DWORD offset_high, /* [in] High-order 32 bits of file offset */
1553 DWORD offset_low, /* [in] Low-order 32 bits of file offset */
1554 DWORD count /* [in] Number of bytes to map */
1556 return MapViewOfFileEx( mapping, access, offset_high,
1557 offset_low, count, NULL );
1561 /***********************************************************************
1562 * MapViewOfFileEx (KERNEL32.@)
1563 * Maps a view of a file into the address space
1566 * Starting address of mapped view
1569 LPVOID WINAPI MapViewOfFileEx(
1570 HANDLE handle, /* [in] File-mapping object to map */
1571 DWORD access, /* [in] Access mode */
1572 DWORD offset_high, /* [in] High-order 32 bits of file offset */
1573 DWORD offset_low, /* [in] Low-order 32 bits of file offset */
1574 DWORD count, /* [in] Number of bytes to map */
1575 LPVOID addr /* [in] Suggested starting address for mapped view */
1579 int flags = MAP_PRIVATE;
1580 int unix_handle = -1;
1582 void *base, *ptr = (void *)-1, *ret;
1583 DWORD size_low, size_high, header_size, shared_size;
1587 /* Check parameters */
1589 if ((offset_low & granularity_mask) ||
1590 (addr && ((UINT_PTR)addr & granularity_mask)))
1592 SetLastError( ERROR_INVALID_PARAMETER );
1596 SERVER_START_REQ( get_mapping_info )
1598 req->handle = handle;
1599 res = wine_server_call_err( req );
1600 prot = reply->protect;
1602 size_low = reply->size_low;
1603 size_high = reply->size_high;
1604 header_size = reply->header_size;
1605 shared_file = reply->shared_file;
1606 shared_size = reply->shared_size;
1607 removable = (reply->drive_type == DRIVE_REMOVABLE ||
1608 reply->drive_type == DRIVE_CDROM);
1611 if (res) goto error;
1613 if ((unix_handle = FILE_GetUnixHandle( handle, 0 )) == -1) goto error;
1615 if (prot & VPROT_IMAGE)
1616 return map_image( handle, unix_handle, base, size_low, header_size,
1617 shared_file, shared_size, removable );
1621 ERR("Sizes larger than 4Gb not supported\n");
1623 if ((offset_low >= size_low) ||
1624 (count > size_low - offset_low))
1626 SetLastError( ERROR_INVALID_PARAMETER );
1629 if (count) size = ROUND_SIZE( offset_low, count );
1630 else size = size_low - offset_low;
1634 case FILE_MAP_ALL_ACCESS:
1635 case FILE_MAP_WRITE:
1636 case FILE_MAP_WRITE | FILE_MAP_READ:
1637 if (!(prot & VPROT_WRITE))
1639 SetLastError( ERROR_INVALID_PARAMETER );
1646 case FILE_MAP_COPY | FILE_MAP_READ:
1647 if (prot & VPROT_READ) break;
1650 SetLastError( ERROR_INVALID_PARAMETER );
1654 /* FIXME: If a mapping is created with SEC_RESERVE and a process,
1655 * which has a view of this mapping commits some pages, they will
1656 * appear commited in all other processes, which have the same
1657 * view created. Since we don`t support this yet, we create the
1658 * whole mapping commited.
1660 prot |= VPROT_COMMITTED;
1662 /* Reserve a properly aligned area */
1664 if ((ptr = anon_mmap_aligned( addr, size, PROT_NONE, 0 )) == (void *)-1) goto error;
1668 TRACE("handle=%x size=%x offset=%lx\n", handle, size, offset_low );
1670 ret = VIRTUAL_mmap( unix_handle, ptr, size, offset_low, offset_high,
1671 VIRTUAL_GetUnixProt( prot ), flags | MAP_FIXED, &removable );
1674 ERR( "VIRTUAL_mmap %p %x %lx%08lx failed\n", ptr, size, offset_high, offset_low );
1677 if (removable) handle = 0; /* don't keep handle open on removable media */
1679 if (!(view = VIRTUAL_CreateView( ptr, size, 0, prot, handle )))
1681 SetLastError( ERROR_OUTOFMEMORY );
1684 if (unix_handle != -1) close( unix_handle );
1688 if (unix_handle != -1) close( unix_handle );
1689 if (ptr != (void *)-1) munmap( ptr, size );
1694 /***********************************************************************
1695 * FlushViewOfFile (KERNEL32.@)
1696 * Writes to the disk a byte range within a mapped view of a file
1702 BOOL WINAPI FlushViewOfFile(
1703 LPCVOID base, /* [in] Start address of byte range to flush */
1704 DWORD cbFlush /* [in] Number of bytes in range */
1707 void *addr = ROUND_ADDR( base, page_mask );
1709 TRACE("FlushViewOfFile at %p for %ld bytes\n",
1712 if (!(view = VIRTUAL_FindView( addr )))
1714 SetLastError( ERROR_INVALID_PARAMETER );
1717 if (!cbFlush) cbFlush = view->size;
1718 if (!msync( addr, cbFlush, MS_SYNC )) return TRUE;
1719 SetLastError( ERROR_INVALID_PARAMETER );
1724 /***********************************************************************
1725 * UnmapViewOfFile (KERNEL32.@)
1726 * Unmaps a mapped view of a file.
1729 * Should addr be an LPCVOID?
1735 BOOL WINAPI UnmapViewOfFile(
1736 LPVOID addr /* [in] Address where mapped view begins */
1739 void *base = ROUND_ADDR( addr, page_mask );
1740 if (!(view = VIRTUAL_FindView( base )) || (base != view->base))
1742 SetLastError( ERROR_INVALID_PARAMETER );
1745 VIRTUAL_DeleteView( view );