/* * Win32 virtual memory functions * * Copyright 1997 Alexandre Julliard */ #include "wine/port.h" #include #include #ifdef HAVE_SYS_ERRNO_H #include #endif #include #include #include #include #include #include #ifdef HAVE_SYS_MMAN_H #include #endif #include "winnls.h" #include "winbase.h" #include "wine/exception.h" #include "wine/unicode.h" #include "wine/library.h" #include "winerror.h" #include "file.h" #include "global.h" #include "wine/server.h" #include "debugtools.h" DEFAULT_DEBUG_CHANNEL(virtual); DECLARE_DEBUG_CHANNEL(module); #ifndef MS_SYNC #define MS_SYNC 0 #endif /* File view */ typedef struct _FV { struct _FV *next; /* Next view */ struct _FV *prev; /* Prev view */ void *base; /* Base address */ UINT size; /* Size in bytes */ UINT flags; /* Allocation flags */ HANDLE mapping; /* Handle to the file mapping */ HANDLERPROC handlerProc; /* Fault handler */ LPVOID handlerArg; /* Fault handler argument */ BYTE protect; /* Protection for all pages at allocation time */ BYTE prot[1]; /* Protection byte for each page */ } FILE_VIEW; /* Per-view flags */ #define VFLAG_SYSTEM 0x01 #define VFLAG_VALLOC 0x02 /* allocated by VirtualAlloc */ /* Conversion from VPROT_* to Win32 flags */ static const BYTE VIRTUAL_Win32Flags[16] = { PAGE_NOACCESS, /* 0 */ PAGE_READONLY, /* READ */ PAGE_READWRITE, /* WRITE */ PAGE_READWRITE, /* READ | WRITE */ PAGE_EXECUTE, /* EXEC */ PAGE_EXECUTE_READ, /* READ | EXEC */ PAGE_EXECUTE_READWRITE, /* WRITE | EXEC */ PAGE_EXECUTE_READWRITE, /* READ | WRITE | EXEC */ PAGE_WRITECOPY, /* WRITECOPY */ PAGE_WRITECOPY, /* READ | WRITECOPY */ PAGE_WRITECOPY, /* WRITE | WRITECOPY */ PAGE_WRITECOPY, /* READ | WRITE | WRITECOPY */ PAGE_EXECUTE_WRITECOPY, /* EXEC | WRITECOPY */ PAGE_EXECUTE_WRITECOPY, /* READ | EXEC | WRITECOPY */ PAGE_EXECUTE_WRITECOPY, /* WRITE | EXEC | WRITECOPY */ PAGE_EXECUTE_WRITECOPY /* READ | WRITE | EXEC | WRITECOPY */ }; static FILE_VIEW *VIRTUAL_FirstView; static CRITICAL_SECTION csVirtual = CRITICAL_SECTION_INIT("csVirtual"); #ifdef __i386__ /* These are always the same on an i386, and it will be faster this way */ # define page_mask 0xfff # define page_shift 12 # define page_size 0x1000 #else static UINT page_shift; static UINT page_mask; static UINT page_size; #endif /* __i386__ */ #define granularity_mask 0xffff /* Allocation granularity (usually 64k) */ #define ROUND_ADDR(addr,mask) \ ((void *)((UINT_PTR)(addr) & ~(mask))) #define ROUND_SIZE(addr,size) \ (((UINT)(size) + ((UINT_PTR)(addr) & page_mask) + page_mask) & ~page_mask) #define VIRTUAL_DEBUG_DUMP_VIEW(view) \ if (!TRACE_ON(virtual)); else VIRTUAL_DumpView(view) static LPVOID VIRTUAL_mmap( int fd, LPVOID start, DWORD size, DWORD offset_low, DWORD offset_high, int prot, int flags, BOOL *removable ); /* filter for page-fault exceptions */ static WINE_EXCEPTION_FILTER(page_fault) { if (GetExceptionCode() == EXCEPTION_ACCESS_VIOLATION) return EXCEPTION_EXECUTE_HANDLER; return EXCEPTION_CONTINUE_SEARCH; } /*********************************************************************** * VIRTUAL_GetProtStr */ static const char *VIRTUAL_GetProtStr( BYTE prot ) { static char buffer[6]; buffer[0] = (prot & VPROT_COMMITTED) ? 'c' : '-'; buffer[1] = (prot & VPROT_GUARD) ? 'g' : '-'; buffer[2] = (prot & VPROT_READ) ? 'r' : '-'; buffer[3] = (prot & VPROT_WRITE) ? ((prot & VPROT_WRITECOPY) ? 'w' : 'W') : '-'; buffer[4] = (prot & VPROT_EXEC) ? 'x' : '-'; buffer[5] = 0; return buffer; } /*********************************************************************** * VIRTUAL_DumpView */ static void VIRTUAL_DumpView( FILE_VIEW *view ) { UINT i, count; char *addr = view->base; BYTE prot = view->prot[0]; DPRINTF( "View: %p - %p", addr, addr + view->size - 1 ); if (view->flags & VFLAG_SYSTEM) DPRINTF( " (system)\n" ); else if (view->flags & VFLAG_VALLOC) DPRINTF( " (valloc)\n" ); else if (view->mapping) DPRINTF( " %d\n", view->mapping ); else DPRINTF( " (anonymous)\n"); for (count = i = 1; i < view->size >> page_shift; i++, count++) { if (view->prot[i] == prot) continue; DPRINTF( " %p - %p %s\n", addr, addr + (count << page_shift) - 1, VIRTUAL_GetProtStr(prot) ); addr += (count << page_shift); prot = view->prot[i]; count = 0; } if (count) DPRINTF( " %p - %p %s\n", addr, addr + (count << page_shift) - 1, VIRTUAL_GetProtStr(prot) ); } /*********************************************************************** * VIRTUAL_Dump */ void VIRTUAL_Dump(void) { FILE_VIEW *view; DPRINTF( "\nDump of all virtual memory views:\n\n" ); EnterCriticalSection(&csVirtual); view = VIRTUAL_FirstView; while (view) { VIRTUAL_DumpView( view ); view = view->next; } LeaveCriticalSection(&csVirtual); } /*********************************************************************** * VIRTUAL_FindView * * Find the view containing a given address. * * RETURNS * View: Success * NULL: Failure */ static FILE_VIEW *VIRTUAL_FindView( const void *addr ) /* [in] Address */ { FILE_VIEW *view; EnterCriticalSection(&csVirtual); view = VIRTUAL_FirstView; while (view) { if (view->base > addr) { view = NULL; break; } if (view->base + view->size > addr) break; view = view->next; } LeaveCriticalSection(&csVirtual); return view; } /*********************************************************************** * VIRTUAL_CreateView * * Create a new view and add it in the linked list. */ static FILE_VIEW *VIRTUAL_CreateView( void *base, UINT size, UINT flags, BYTE vprot, HANDLE mapping ) { FILE_VIEW *view, *prev; /* Create the view structure */ assert( !((unsigned int)base & page_mask) ); assert( !(size & page_mask) ); size >>= page_shift; if (!(view = (FILE_VIEW *)malloc( sizeof(*view) + size - 1 ))) return NULL; view->base = base; view->size = size << page_shift; view->flags = flags; view->mapping = mapping; view->protect = vprot; view->handlerProc = NULL; memset( view->prot, vprot, size ); /* Duplicate the mapping handle */ if (view->mapping && !DuplicateHandle( GetCurrentProcess(), view->mapping, GetCurrentProcess(), &view->mapping, 0, FALSE, DUPLICATE_SAME_ACCESS )) { free( view ); return NULL; } /* Insert it in the linked list */ EnterCriticalSection(&csVirtual); if (!VIRTUAL_FirstView || (VIRTUAL_FirstView->base > base)) { view->next = VIRTUAL_FirstView; view->prev = NULL; if (view->next) view->next->prev = view; VIRTUAL_FirstView = view; } else { prev = VIRTUAL_FirstView; while (prev->next && (prev->next->base < base)) prev = prev->next; view->next = prev->next; view->prev = prev; if (view->next) view->next->prev = view; prev->next = view; } LeaveCriticalSection(&csVirtual); VIRTUAL_DEBUG_DUMP_VIEW( view ); return view; } /*********************************************************************** * VIRTUAL_DeleteView * Deletes a view. * * RETURNS * None */ static void VIRTUAL_DeleteView( FILE_VIEW *view /* [in] View */ ) { if (!(view->flags & VFLAG_SYSTEM)) munmap( (void *)view->base, view->size ); EnterCriticalSection(&csVirtual); if (view->next) view->next->prev = view->prev; if (view->prev) view->prev->next = view->next; else VIRTUAL_FirstView = view->next; LeaveCriticalSection(&csVirtual); if (view->mapping) NtClose( view->mapping ); free( view ); } /*********************************************************************** * VIRTUAL_GetUnixProt * * Convert page protections to protection for mmap/mprotect. */ static int VIRTUAL_GetUnixProt( BYTE vprot ) { int prot = 0; if ((vprot & VPROT_COMMITTED) && !(vprot & VPROT_GUARD)) { if (vprot & VPROT_READ) prot |= PROT_READ; if (vprot & VPROT_WRITE) prot |= PROT_WRITE; if (vprot & VPROT_WRITECOPY) prot |= PROT_WRITE; if (vprot & VPROT_EXEC) prot |= PROT_EXEC; } return prot; } /*********************************************************************** * VIRTUAL_GetWin32Prot * * Convert page protections to Win32 flags. * * RETURNS * None */ static void VIRTUAL_GetWin32Prot( BYTE vprot, /* [in] Page protection flags */ DWORD *protect, /* [out] Location to store Win32 protection flags */ DWORD *state /* [out] Location to store mem state flag */ ) { if (protect) { *protect = VIRTUAL_Win32Flags[vprot & 0x0f]; /* if (vprot & VPROT_GUARD) *protect |= PAGE_GUARD;*/ if (vprot & VPROT_NOCACHE) *protect |= PAGE_NOCACHE; if (vprot & VPROT_GUARD) *protect = PAGE_NOACCESS; } if (state) *state = (vprot & VPROT_COMMITTED) ? MEM_COMMIT : MEM_RESERVE; } /*********************************************************************** * VIRTUAL_GetProt * * Build page protections from Win32 flags. * * RETURNS * Value of page protection flags */ static BYTE VIRTUAL_GetProt( DWORD protect /* [in] Win32 protection flags */ ) { BYTE vprot; switch(protect & 0xff) { case PAGE_READONLY: vprot = VPROT_READ; break; case PAGE_READWRITE: vprot = VPROT_READ | VPROT_WRITE; break; case PAGE_WRITECOPY: /* MSDN CreateFileMapping() states that if PAGE_WRITECOPY is given, * that the hFile must have been opened with GENERIC_READ and * GENERIC_WRITE access. This is WRONG as tests show that you * only need GENERIC_READ access (at least for Win9x, * FIXME: what about NT?). Thus, we don't put VPROT_WRITE in * PAGE_WRITECOPY and PAGE_EXECUTE_WRITECOPY. */ vprot = VPROT_READ | VPROT_WRITECOPY; break; case PAGE_EXECUTE: vprot = VPROT_EXEC; break; case PAGE_EXECUTE_READ: vprot = VPROT_EXEC | VPROT_READ; break; case PAGE_EXECUTE_READWRITE: vprot = VPROT_EXEC | VPROT_READ | VPROT_WRITE; break; case PAGE_EXECUTE_WRITECOPY: /* See comment for PAGE_WRITECOPY above */ vprot = VPROT_EXEC | VPROT_READ | VPROT_WRITECOPY; break; case PAGE_NOACCESS: default: vprot = 0; break; } if (protect & PAGE_GUARD) vprot |= VPROT_GUARD; if (protect & PAGE_NOCACHE) vprot |= VPROT_NOCACHE; return vprot; } /*********************************************************************** * VIRTUAL_SetProt * * Change the protection of a range of pages. * * RETURNS * TRUE: Success * FALSE: Failure */ static BOOL VIRTUAL_SetProt( FILE_VIEW *view, /* [in] Pointer to view */ void *base, /* [in] Starting address */ UINT size, /* [in] Size in bytes */ BYTE vprot ) /* [in] Protections to use */ { TRACE("%p-%p %s\n", base, (char *)base + size - 1, VIRTUAL_GetProtStr( vprot ) ); if (mprotect( base, size, VIRTUAL_GetUnixProt(vprot) )) return FALSE; /* FIXME: last error */ memset( view->prot + (((char *)base - (char *)view->base) >> page_shift), vprot, size >> page_shift ); VIRTUAL_DEBUG_DUMP_VIEW( view ); return TRUE; } /*********************************************************************** * anon_mmap_aligned * * Create an anonymous mapping aligned to the allocation granularity. */ static void *anon_mmap_aligned( void *base, unsigned int size, int prot, int flags ) { void *ptr; unsigned int view_size = size + (base ? 0 : granularity_mask + 1); if ((ptr = wine_anon_mmap( base, view_size, prot, flags )) == (void *)-1) { /* KB: Q125713, 25-SEP-1995, "Common File Mapping Problems and * Platform Differences": * Windows NT: ERROR_INVALID_PARAMETER * Windows 95: ERROR_INVALID_ADDRESS. */ if (errno == ENOMEM) SetLastError( ERROR_OUTOFMEMORY ); else { if (GetVersion() & 0x80000000) /* win95 */ SetLastError( ERROR_INVALID_ADDRESS ); else SetLastError( ERROR_INVALID_PARAMETER ); } return ptr; } if (!base) { /* Release the extra memory while keeping the range * starting on the granularity boundary. */ if ((unsigned int)ptr & granularity_mask) { unsigned int extra = granularity_mask + 1 - ((unsigned int)ptr & granularity_mask); munmap( ptr, extra ); ptr = (char *)ptr + extra; view_size -= extra; } if (view_size > size) munmap( (char *)ptr + size, view_size - size ); } else if (ptr != base) { /* We couldn't get the address we wanted */ munmap( ptr, view_size ); SetLastError( ERROR_INVALID_ADDRESS ); ptr = (void *)-1; } return ptr; } /*********************************************************************** * map_image * * Map an executable (PE format) image into memory. */ static LPVOID map_image( HANDLE hmapping, int fd, char *base, DWORD total_size, DWORD header_size, HANDLE shared_file, DWORD shared_size, BOOL removable ) { IMAGE_DOS_HEADER *dos; IMAGE_NT_HEADERS *nt; IMAGE_SECTION_HEADER *sec; int i, pos; DWORD err = GetLastError(); FILE_VIEW *view; char *ptr; int shared_fd = -1; SetLastError( ERROR_BAD_EXE_FORMAT ); /* generic error */ /* zero-map the whole range */ if ((ptr = wine_anon_mmap( base, total_size, PROT_READ | PROT_WRITE | PROT_EXEC, 0 )) == (char *)-1) { ptr = wine_anon_mmap( NULL, total_size, PROT_READ | PROT_WRITE | PROT_EXEC, 0 ); if (ptr == (char *)-1) { ERR_(module)("Not enough memory for module (%ld bytes)\n", total_size); goto error; } } TRACE_(module)( "mapped PE file at %p-%p\n", ptr, ptr + total_size ); /* map the header */ if (VIRTUAL_mmap( fd, ptr, header_size, 0, 0, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_FIXED, &removable ) == (char *)-1) goto error; dos = (IMAGE_DOS_HEADER *)ptr; nt = (IMAGE_NT_HEADERS *)(ptr + dos->e_lfanew); if ((char *)(nt + 1) > ptr + header_size) goto error; sec = (IMAGE_SECTION_HEADER*)((char*)&nt->OptionalHeader+nt->FileHeader.SizeOfOptionalHeader); if ((char *)(sec + nt->FileHeader.NumberOfSections) > ptr + header_size) goto error; /* check the architecture */ if (nt->FileHeader.Machine != IMAGE_FILE_MACHINE_I386) { MESSAGE("Trying to load PE image for unsupported architecture ("); switch (nt->FileHeader.Machine) { case IMAGE_FILE_MACHINE_UNKNOWN: MESSAGE("Unknown"); break; case IMAGE_FILE_MACHINE_I860: MESSAGE("I860"); break; case IMAGE_FILE_MACHINE_R3000: MESSAGE("R3000"); break; case IMAGE_FILE_MACHINE_R4000: MESSAGE("R4000"); break; case IMAGE_FILE_MACHINE_R10000: MESSAGE("R10000"); break; case IMAGE_FILE_MACHINE_ALPHA: MESSAGE("Alpha"); break; case IMAGE_FILE_MACHINE_POWERPC: MESSAGE("PowerPC"); break; default: MESSAGE("Unknown-%04x", nt->FileHeader.Machine); break; } MESSAGE(")\n"); goto error; } /* retrieve the shared sections file */ if (shared_size) { if ((shared_fd = FILE_GetUnixHandle( shared_file, GENERIC_READ )) == -1) goto error; CloseHandle( shared_file ); /* we no longer need it */ shared_file = 0; } /* map all the sections */ for (i = pos = 0; i < nt->FileHeader.NumberOfSections; i++, sec++) { DWORD size; /* a few sanity checks */ size = sec->VirtualAddress + ROUND_SIZE( sec->VirtualAddress, sec->Misc.VirtualSize ); if (sec->VirtualAddress > total_size || size > total_size || size < sec->VirtualAddress) { ERR_(module)( "Section %.8s too large (%lx+%lx/%lx)\n", sec->Name, sec->VirtualAddress, sec->Misc.VirtualSize, total_size ); goto error; } if ((sec->Characteristics & IMAGE_SCN_MEM_SHARED) && (sec->Characteristics & IMAGE_SCN_MEM_WRITE)) { size = ROUND_SIZE( 0, sec->Misc.VirtualSize ); TRACE_(module)( "mapping shared section %.8s at %p off %lx (%x) size %lx (%lx) flags %lx\n", sec->Name, ptr + sec->VirtualAddress, sec->PointerToRawData, pos, sec->SizeOfRawData, size, sec->Characteristics ); if (VIRTUAL_mmap( shared_fd, ptr + sec->VirtualAddress, size, pos, 0, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_SHARED|MAP_FIXED, NULL ) == (void *)-1) { ERR_(module)( "Could not map shared section %.8s\n", sec->Name ); goto error; } pos += size; continue; } if (sec->Characteristics & IMAGE_SCN_CNT_UNINITIALIZED_DATA) continue; if (!sec->PointerToRawData || !sec->SizeOfRawData) continue; TRACE_(module)( "mapping section %.8s at %p off %lx size %lx flags %lx\n", sec->Name, ptr + sec->VirtualAddress, sec->PointerToRawData, sec->SizeOfRawData, sec->Characteristics ); /* Note: if the section is not aligned properly VIRTUAL_mmap will magically * fall back to read(), so we don't need to check anything here. */ if (VIRTUAL_mmap( fd, ptr + sec->VirtualAddress, sec->SizeOfRawData, sec->PointerToRawData, 0, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE | MAP_FIXED, &removable ) == (void *)-1) { ERR_(module)( "Could not map section %.8s, file probably truncated\n", sec->Name ); goto error; } if ((sec->SizeOfRawData < sec->Misc.VirtualSize) && (sec->SizeOfRawData & page_mask)) { DWORD end = ROUND_SIZE( 0, sec->SizeOfRawData ); if (end > sec->Misc.VirtualSize) end = sec->Misc.VirtualSize; TRACE_(module)("clearing %p - %p\n", ptr + sec->VirtualAddress + sec->SizeOfRawData, ptr + sec->VirtualAddress + end ); memset( ptr + sec->VirtualAddress + sec->SizeOfRawData, 0, end - sec->SizeOfRawData ); } } if (removable) hmapping = 0; /* don't keep handle open on removable media */ if (!(view = VIRTUAL_CreateView( ptr, total_size, 0, VPROT_COMMITTED|VPROT_READ|VPROT_WRITE|VPROT_WRITECOPY, hmapping ))) { SetLastError( ERROR_OUTOFMEMORY ); goto error; } SetLastError( err ); /* restore last error */ close( fd ); if (shared_fd != -1) close( shared_fd ); return ptr; error: if (ptr != (char *)-1) munmap( ptr, total_size ); close( fd ); if (shared_fd != -1) close( shared_fd ); if (shared_file) CloseHandle( shared_file ); return NULL; } /*********************************************************************** * VIRTUAL_Init */ #ifndef page_mask DECL_GLOBAL_CONSTRUCTOR(VIRTUAL_Init) { page_size = getpagesize(); page_mask = page_size - 1; /* Make sure we have a power of 2 */ assert( !(page_size & page_mask) ); page_shift = 0; while ((1 << page_shift) != page_size) page_shift++; } #endif /* page_mask */ /*********************************************************************** * VIRTUAL_SetFaultHandler */ BOOL VIRTUAL_SetFaultHandler( LPCVOID addr, HANDLERPROC proc, LPVOID arg ) { FILE_VIEW *view; if (!(view = VIRTUAL_FindView( addr ))) return FALSE; view->handlerProc = proc; view->handlerArg = arg; return TRUE; } /*********************************************************************** * VIRTUAL_HandleFault */ DWORD VIRTUAL_HandleFault( LPCVOID addr ) { FILE_VIEW *view = VIRTUAL_FindView( addr ); DWORD ret = EXCEPTION_ACCESS_VIOLATION; if (view) { if (view->handlerProc) { if (view->handlerProc(view->handlerArg, addr)) ret = 0; /* handled */ } else { BYTE vprot = view->prot[((char *)addr - (char *)view->base) >> page_shift]; void *page = (void *)((UINT_PTR)addr & ~page_mask); char *stack = (char *)NtCurrentTeb()->stack_base + SIGNAL_STACK_SIZE + page_mask + 1; if (vprot & VPROT_GUARD) { VIRTUAL_SetProt( view, page, page_mask + 1, vprot & ~VPROT_GUARD ); ret = STATUS_GUARD_PAGE_VIOLATION; } /* is it inside the stack guard pages? */ if (((char *)addr >= stack) && ((char *)addr < stack + 2*(page_mask+1))) ret = STATUS_STACK_OVERFLOW; } } return ret; } /*********************************************************************** * unaligned_mmap * * Linux kernels before 2.4.x can support non page-aligned offsets, as * long as the offset is aligned to the filesystem block size. This is * a big performance gain so we want to take advantage of it. * * However, when we use 64-bit file support this doesn't work because * glibc rejects unaligned offsets. Also glibc 2.1.3 mmap64 is broken * in that it rounds unaligned offsets down to a page boundary. For * these reasons we do a direct system call here. */ static void *unaligned_mmap( void *addr, size_t length, unsigned int prot, unsigned int flags, int fd, unsigned int offset_low, unsigned int offset_high ) { #if defined(linux) && defined(__i386__) && defined(__GNUC__) if (!offset_high && (offset_low & page_mask)) { int ret; __asm__ __volatile__("push %%ebx\n\t" "movl %2,%%ebx\n\t" "int $0x80\n\t" "popl %%ebx" : "=a" (ret) : "0" (90), /* SYS_mmap */ "g" (&addr) ); if (ret < 0 && ret > -4096) { errno = -ret; ret = -1; } return (void *)ret; } #endif return mmap( addr, length, prot, flags, fd, ((off_t)offset_high << 32) | offset_low ); } /*********************************************************************** * VIRTUAL_mmap * * Wrapper for mmap() that handles anonymous mappings portably, * and falls back to read if mmap of a file fails. */ static LPVOID VIRTUAL_mmap( int fd, LPVOID start, DWORD size, DWORD offset_low, DWORD offset_high, int prot, int flags, BOOL *removable ) { int pos; LPVOID ret; off_t offset; BOOL is_shared_write = FALSE; if (fd == -1) return wine_anon_mmap( start, size, prot, flags ); if (prot & PROT_WRITE) { #ifdef MAP_SHARED if (flags & MAP_SHARED) is_shared_write = TRUE; #endif #ifdef MAP_PRIVATE if (!(flags & MAP_PRIVATE)) is_shared_write = TRUE; #endif } if (removable && *removable) { /* if on removable media, try using read instead of mmap */ if (!is_shared_write) goto fake_mmap; *removable = FALSE; } if ((ret = unaligned_mmap( start, size, prot, flags, fd, offset_low, offset_high )) != (LPVOID)-1) return ret; /* mmap() failed; if this is because the file offset is not */ /* page-aligned (EINVAL), or because the underlying filesystem */ /* does not support mmap() (ENOEXEC,ENODEV), we do it by hand. */ if ((errno != ENOEXEC) && (errno != EINVAL) && (errno != ENODEV)) return ret; if (is_shared_write) return ret; /* we cannot fake shared write mappings */ fake_mmap: /* Reserve the memory with an anonymous mmap */ ret = wine_anon_mmap( start, size, PROT_READ | PROT_WRITE, flags ); if (ret == (LPVOID)-1) return ret; /* Now read in the file */ offset = ((off_t)offset_high << 32) | offset_low; if ((pos = lseek( fd, offset, SEEK_SET )) == -1) { munmap( ret, size ); return (LPVOID)-1; } read( fd, ret, size ); lseek( fd, pos, SEEK_SET ); /* Restore the file pointer */ mprotect( ret, size, prot ); /* Set the right protection */ return ret; } /*********************************************************************** * VirtualAlloc (KERNEL32.@) * Reserves or commits a region of pages in virtual address space * * RETURNS * Base address of allocated region of pages * NULL: Failure */ LPVOID WINAPI VirtualAlloc( LPVOID addr, /* [in] Address of region to reserve or commit */ DWORD size, /* [in] Size of region */ DWORD type, /* [in] Type of allocation */ DWORD protect)/* [in] Type of access protection */ { FILE_VIEW *view; char *ptr, *base; BYTE vprot; TRACE("%p %08lx %lx %08lx\n", addr, size, type, protect ); /* Round parameters to a page boundary */ if (size > 0x7fc00000) /* 2Gb - 4Mb */ { SetLastError( ERROR_OUTOFMEMORY ); return NULL; } if (addr) { if (type & MEM_RESERVE) /* Round down to 64k boundary */ base = ROUND_ADDR( addr, granularity_mask ); else base = ROUND_ADDR( addr, page_mask ); size = (((UINT_PTR)addr + size + page_mask) & ~page_mask) - (UINT_PTR)base; if ((base <= (char *)granularity_mask) || (base + size < base)) { /* disallow low 64k and wrap-around */ SetLastError( ERROR_INVALID_PARAMETER ); return NULL; } } else { base = 0; size = (size + page_mask) & ~page_mask; } if (type & MEM_TOP_DOWN) { /* FIXME: MEM_TOP_DOWN allocates the largest possible address. * Is there _ANY_ way to do it with UNIX mmap()? */ WARN("MEM_TOP_DOWN ignored\n"); type &= ~MEM_TOP_DOWN; } /* Compute the alloc type flags */ if (!(type & (MEM_COMMIT | MEM_RESERVE | MEM_SYSTEM)) || (type & ~(MEM_COMMIT | MEM_RESERVE | MEM_SYSTEM))) { ERR("called with wrong alloc type flags (%08lx) !\n", type); SetLastError( ERROR_INVALID_PARAMETER ); return NULL; } if (type & (MEM_COMMIT | MEM_SYSTEM)) vprot = VIRTUAL_GetProt( protect ) | VPROT_COMMITTED; else vprot = 0; /* Reserve the memory */ if ((type & MEM_RESERVE) || !base) { if (type & MEM_SYSTEM) { if (!(view = VIRTUAL_CreateView( base, size, VFLAG_VALLOC | VFLAG_SYSTEM, vprot, 0 ))) { SetLastError( ERROR_OUTOFMEMORY ); return NULL; } return (LPVOID)base; } ptr = anon_mmap_aligned( base, size, VIRTUAL_GetUnixProt( vprot ), 0 ); if (ptr == (void *)-1) return NULL; if (!(view = VIRTUAL_CreateView( ptr, size, VFLAG_VALLOC, vprot, 0 ))) { munmap( ptr, size ); SetLastError( ERROR_OUTOFMEMORY ); return NULL; } return ptr; } /* Commit the pages */ if (!(view = VIRTUAL_FindView( base )) || (base + size > (char *)view->base + view->size)) { SetLastError( ERROR_INVALID_ADDRESS ); return NULL; } if (!VIRTUAL_SetProt( view, base, size, vprot )) return NULL; return (LPVOID)base; } /*********************************************************************** * VirtualAllocEx (KERNEL32.@) * * Seems to be just as VirtualAlloc, but with process handle. */ LPVOID WINAPI VirtualAllocEx( HANDLE hProcess, /* [in] Handle of process to do mem operation */ LPVOID addr, /* [in] Address of region to reserve or commit */ DWORD size, /* [in] Size of region */ DWORD type, /* [in] Type of allocation */ DWORD protect /* [in] Type of access protection */ ) { if (MapProcessHandle( hProcess ) == GetCurrentProcessId()) return VirtualAlloc( addr, size, type, protect ); ERR("Unsupported on other process\n"); return NULL; } /*********************************************************************** * VirtualFree (KERNEL32.@) * Release or decommits a region of pages in virtual address space. * * RETURNS * TRUE: Success * FALSE: Failure */ BOOL WINAPI VirtualFree( LPVOID addr, /* [in] Address of region of committed pages */ DWORD size, /* [in] Size of region */ DWORD type /* [in] Type of operation */ ) { FILE_VIEW *view; char *base; TRACE("%p %08lx %lx\n", addr, size, type ); /* Fix the parameters */ size = ROUND_SIZE( addr, size ); base = ROUND_ADDR( addr, page_mask ); if (!(view = VIRTUAL_FindView( base )) || (base + size > (char *)view->base + view->size) || !(view->flags & VFLAG_VALLOC)) { SetLastError( ERROR_INVALID_PARAMETER ); return FALSE; } /* Compute the protection flags */ if ((type != MEM_DECOMMIT) && (type != MEM_RELEASE)) { ERR("called with wrong free type flags (%08lx) !\n", type); SetLastError( ERROR_INVALID_PARAMETER ); return FALSE; } /* Free the pages */ if (type == MEM_RELEASE) { if (size || (base != view->base)) { SetLastError( ERROR_INVALID_PARAMETER ); return FALSE; } VIRTUAL_DeleteView( view ); return TRUE; } /* Decommit the pages by remapping zero-pages instead */ if (wine_anon_mmap( (LPVOID)base, size, VIRTUAL_GetUnixProt(0), MAP_FIXED ) != (LPVOID)base) ERR( "Could not remap pages, expect trouble\n" ); return VIRTUAL_SetProt( view, base, size, 0 ); } /*********************************************************************** * VirtualLock (KERNEL32.@) * Locks the specified region of virtual address space * * NOTE * Always returns TRUE * * RETURNS * TRUE: Success * FALSE: Failure */ BOOL WINAPI VirtualLock( LPVOID addr, /* [in] Address of first byte of range to lock */ DWORD size /* [in] Number of bytes in range to lock */ ) { return TRUE; } /*********************************************************************** * VirtualUnlock (KERNEL32.@) * Unlocks a range of pages in the virtual address space * * NOTE * Always returns TRUE * * RETURNS * TRUE: Success * FALSE: Failure */ BOOL WINAPI VirtualUnlock( LPVOID addr, /* [in] Address of first byte of range */ DWORD size /* [in] Number of bytes in range */ ) { return TRUE; } /*********************************************************************** * VirtualProtect (KERNEL32.@) * Changes the access protection on a region of committed pages * * RETURNS * TRUE: Success * FALSE: Failure */ BOOL WINAPI VirtualProtect( LPVOID addr, /* [in] Address of region of committed pages */ DWORD size, /* [in] Size of region */ DWORD new_prot, /* [in] Desired access protection */ LPDWORD old_prot /* [out] Address of variable to get old protection */ ) { FILE_VIEW *view; char *base; UINT i; BYTE vprot, *p; DWORD prot; TRACE("%p %08lx %08lx\n", addr, size, new_prot ); /* Fix the parameters */ size = ROUND_SIZE( addr, size ); base = ROUND_ADDR( addr, page_mask ); if (!(view = VIRTUAL_FindView( base )) || (base + size > (char *)view->base + view->size)) { SetLastError( ERROR_INVALID_PARAMETER ); return FALSE; } /* Make sure all the pages are committed */ p = view->prot + ((base - (char *)view->base) >> page_shift); VIRTUAL_GetWin32Prot( *p, &prot, NULL ); for (i = size >> page_shift; i; i--, p++) { if (!(*p & VPROT_COMMITTED)) { SetLastError( ERROR_INVALID_PARAMETER ); return FALSE; } } if (old_prot) *old_prot = prot; vprot = VIRTUAL_GetProt( new_prot ) | VPROT_COMMITTED; return VIRTUAL_SetProt( view, base, size, vprot ); } /*********************************************************************** * VirtualProtectEx (KERNEL32.@) * Changes the access protection on a region of committed pages in the * virtual address space of a specified process * * RETURNS * TRUE: Success * FALSE: Failure */ BOOL WINAPI VirtualProtectEx( HANDLE handle, /* [in] Handle of process */ LPVOID addr, /* [in] Address of region of committed pages */ DWORD size, /* [in] Size of region */ DWORD new_prot, /* [in] Desired access protection */ LPDWORD old_prot /* [out] Address of variable to get old protection */ ) { if (MapProcessHandle( handle ) == GetCurrentProcessId()) return VirtualProtect( addr, size, new_prot, old_prot ); ERR("Unsupported on other process\n"); return FALSE; } /*********************************************************************** * VirtualQuery (KERNEL32.@) * Provides info about a range of pages in virtual address space * * RETURNS * Number of bytes returned in information buffer * or 0 if addr is >= 0xc0000000 (kernel space). */ DWORD WINAPI VirtualQuery( LPCVOID addr, /* [in] Address of region */ LPMEMORY_BASIC_INFORMATION info, /* [out] Address of info buffer */ DWORD len /* [in] Size of buffer */ ) { FILE_VIEW *view; char *base, *alloc_base = 0; UINT size = 0; if (addr >= (void*)0xc0000000) return 0; base = ROUND_ADDR( addr, page_mask ); /* Find the view containing the address */ EnterCriticalSection(&csVirtual); view = VIRTUAL_FirstView; for (;;) { if (!view) { size = (char *)0xffff0000 - alloc_base; break; } if ((char *)view->base > base) { size = (char *)view->base - alloc_base; view = NULL; break; } if ((char *)view->base + view->size > base) { alloc_base = view->base; size = view->size; break; } alloc_base = (char *)view->base + view->size; view = view->next; } LeaveCriticalSection(&csVirtual); /* Fill the info structure */ if (!view) { info->State = MEM_FREE; info->Protect = 0; info->AllocationProtect = 0; info->Type = 0; } else { BYTE vprot = view->prot[(base - alloc_base) >> page_shift]; VIRTUAL_GetWin32Prot( vprot, &info->Protect, &info->State ); for (size = base - alloc_base; size < view->size; size += page_mask+1) if (view->prot[size >> page_shift] != vprot) break; info->AllocationProtect = view->protect; info->Type = MEM_PRIVATE; /* FIXME */ } info->BaseAddress = (LPVOID)base; info->AllocationBase = (LPVOID)alloc_base; info->RegionSize = size - (base - alloc_base); return sizeof(*info); } /*********************************************************************** * VirtualQueryEx (KERNEL32.@) * Provides info about a range of pages in virtual address space of a * specified process * * RETURNS * Number of bytes returned in information buffer */ DWORD WINAPI VirtualQueryEx( HANDLE handle, /* [in] Handle of process */ LPCVOID addr, /* [in] Address of region */ LPMEMORY_BASIC_INFORMATION info, /* [out] Address of info buffer */ DWORD len /* [in] Size of buffer */ ) { if (MapProcessHandle( handle ) == GetCurrentProcessId()) return VirtualQuery( addr, info, len ); ERR("Unsupported on other process\n"); return 0; } /*********************************************************************** * IsBadReadPtr (KERNEL32.@) * * RETURNS * FALSE: Process has read access to entire block * TRUE: Otherwise */ BOOL WINAPI IsBadReadPtr( LPCVOID ptr, /* [in] Address of memory block */ UINT size ) /* [in] Size of block */ { if (!size) return FALSE; /* handle 0 size case w/o reference */ __TRY { volatile const char *p = ptr; char dummy; UINT count = size; while (count > page_size) { dummy = *p; p += page_size; count -= page_size; } dummy = p[0]; dummy = p[count - 1]; } __EXCEPT(page_fault) { return TRUE; } __ENDTRY return FALSE; } /*********************************************************************** * IsBadWritePtr (KERNEL32.@) * * RETURNS * FALSE: Process has write access to entire block * TRUE: Otherwise */ BOOL WINAPI IsBadWritePtr( LPVOID ptr, /* [in] Address of memory block */ UINT size ) /* [in] Size of block in bytes */ { if (!size) return FALSE; /* handle 0 size case w/o reference */ __TRY { volatile char *p = ptr; UINT count = size; while (count > page_size) { *p |= 0; p += page_size; count -= page_size; } p[0] |= 0; p[count - 1] |= 0; } __EXCEPT(page_fault) { return TRUE; } __ENDTRY return FALSE; } /*********************************************************************** * IsBadHugeReadPtr (KERNEL32.@) * RETURNS * FALSE: Process has read access to entire block * TRUE: Otherwise */ BOOL WINAPI IsBadHugeReadPtr( LPCVOID ptr, /* [in] Address of memory block */ UINT size /* [in] Size of block */ ) { return IsBadReadPtr( ptr, size ); } /*********************************************************************** * IsBadHugeWritePtr (KERNEL32.@) * RETURNS * FALSE: Process has write access to entire block * TRUE: Otherwise */ BOOL WINAPI IsBadHugeWritePtr( LPVOID ptr, /* [in] Address of memory block */ UINT size /* [in] Size of block */ ) { return IsBadWritePtr( ptr, size ); } /*********************************************************************** * IsBadCodePtr (KERNEL32.@) * * RETURNS * FALSE: Process has read access to specified memory * TRUE: Otherwise */ BOOL WINAPI IsBadCodePtr( FARPROC ptr ) /* [in] Address of function */ { return IsBadReadPtr( ptr, 1 ); } /*********************************************************************** * IsBadStringPtrA (KERNEL32.@) * * RETURNS * FALSE: Read access to all bytes in string * TRUE: Else */ BOOL WINAPI IsBadStringPtrA( LPCSTR str, /* [in] Address of string */ UINT max ) /* [in] Maximum size of string */ { __TRY { volatile const char *p = str; while (p != str + max) if (!*p++) break; } __EXCEPT(page_fault) { return TRUE; } __ENDTRY return FALSE; } /*********************************************************************** * IsBadStringPtrW (KERNEL32.@) * See IsBadStringPtrA */ BOOL WINAPI IsBadStringPtrW( LPCWSTR str, UINT max ) { __TRY { volatile const WCHAR *p = str; while (p != str + max) if (!*p++) break; } __EXCEPT(page_fault) { return TRUE; } __ENDTRY return FALSE; } /*********************************************************************** * CreateFileMappingA (KERNEL32.@) * Creates a named or unnamed file-mapping object for the specified file * * RETURNS * Handle: Success * 0: Mapping object does not exist * NULL: Failure */ HANDLE WINAPI CreateFileMappingA( HANDLE hFile, /* [in] Handle of file to map */ SECURITY_ATTRIBUTES *sa, /* [in] Optional security attributes*/ DWORD protect, /* [in] Protection for mapping object */ DWORD size_high, /* [in] High-order 32 bits of object size */ DWORD size_low, /* [in] Low-order 32 bits of object size */ LPCSTR name /* [in] Name of file-mapping object */ ) { HANDLE ret; BYTE vprot; DWORD len = name ? MultiByteToWideChar( CP_ACP, 0, name, strlen(name), NULL, 0 ) : 0; /* Check parameters */ TRACE("(%x,%p,%08lx,%08lx%08lx,%s)\n", hFile, sa, protect, size_high, size_low, debugstr_a(name) ); if (len > MAX_PATH) { SetLastError( ERROR_FILENAME_EXCED_RANGE ); return 0; } vprot = VIRTUAL_GetProt( protect ); if (protect & SEC_RESERVE) { if (hFile != INVALID_HANDLE_VALUE) { SetLastError( ERROR_INVALID_PARAMETER ); return 0; } } else vprot |= VPROT_COMMITTED; if (protect & SEC_NOCACHE) vprot |= VPROT_NOCACHE; if (protect & SEC_IMAGE) vprot |= VPROT_IMAGE; /* Create the server object */ if (hFile == INVALID_HANDLE_VALUE) hFile = 0; SERVER_START_VAR_REQ( create_mapping, len * sizeof(WCHAR) ) { req->file_handle = hFile; req->size_high = size_high; req->size_low = size_low; req->protect = vprot; req->inherit = (sa && (sa->nLength>=sizeof(*sa)) && sa->bInheritHandle); if (len) MultiByteToWideChar( CP_ACP, 0, name, strlen(name), server_data_ptr(req), len ); SetLastError(0); SERVER_CALL_ERR(); ret = req->handle; } SERVER_END_VAR_REQ; return ret; } /*********************************************************************** * CreateFileMappingW (KERNEL32.@) * See CreateFileMappingA */ HANDLE WINAPI CreateFileMappingW( HANDLE hFile, LPSECURITY_ATTRIBUTES sa, DWORD protect, DWORD size_high, DWORD size_low, LPCWSTR name ) { HANDLE ret; BYTE vprot; DWORD len = name ? strlenW(name) : 0; /* Check parameters */ TRACE("(%x,%p,%08lx,%08lx%08lx,%s)\n", hFile, sa, protect, size_high, size_low, debugstr_w(name) ); if (len > MAX_PATH) { SetLastError( ERROR_FILENAME_EXCED_RANGE ); return 0; } vprot = VIRTUAL_GetProt( protect ); if (protect & SEC_RESERVE) { if (hFile != INVALID_HANDLE_VALUE) { SetLastError( ERROR_INVALID_PARAMETER ); return 0; } } else vprot |= VPROT_COMMITTED; if (protect & SEC_NOCACHE) vprot |= VPROT_NOCACHE; if (protect & SEC_IMAGE) vprot |= VPROT_IMAGE; /* Create the server object */ if (hFile == INVALID_HANDLE_VALUE) hFile = 0; SERVER_START_VAR_REQ( create_mapping, len * sizeof(WCHAR) ) { req->file_handle = hFile; req->size_high = size_high; req->size_low = size_low; req->protect = vprot; req->inherit = (sa && (sa->nLength>=sizeof(*sa)) && sa->bInheritHandle); memcpy( server_data_ptr(req), name, len * sizeof(WCHAR) ); SetLastError(0); SERVER_CALL_ERR(); ret = req->handle; } SERVER_END_VAR_REQ; return ret; } /*********************************************************************** * OpenFileMappingA (KERNEL32.@) * Opens a named file-mapping object. * * RETURNS * Handle: Success * NULL: Failure */ HANDLE WINAPI OpenFileMappingA( DWORD access, /* [in] Access mode */ BOOL inherit, /* [in] Inherit flag */ LPCSTR name ) /* [in] Name of file-mapping object */ { HANDLE ret; DWORD len = name ? MultiByteToWideChar( CP_ACP, 0, name, strlen(name), NULL, 0 ) : 0; if (len > MAX_PATH) { SetLastError( ERROR_FILENAME_EXCED_RANGE ); return 0; } SERVER_START_VAR_REQ( open_mapping, len * sizeof(WCHAR) ) { req->access = access; req->inherit = inherit; if (len) MultiByteToWideChar( CP_ACP, 0, name, strlen(name), server_data_ptr(req), len ); SERVER_CALL_ERR(); ret = req->handle; } SERVER_END_VAR_REQ; return ret; } /*********************************************************************** * OpenFileMappingW (KERNEL32.@) * See OpenFileMappingA */ HANDLE WINAPI OpenFileMappingW( DWORD access, BOOL inherit, LPCWSTR name) { HANDLE ret; DWORD len = name ? strlenW(name) : 0; if (len > MAX_PATH) { SetLastError( ERROR_FILENAME_EXCED_RANGE ); return 0; } SERVER_START_VAR_REQ( open_mapping, len * sizeof(WCHAR) ) { req->access = access; req->inherit = inherit; memcpy( server_data_ptr(req), name, len * sizeof(WCHAR) ); SERVER_CALL_ERR(); ret = req->handle; } SERVER_END_VAR_REQ; return ret; } /*********************************************************************** * MapViewOfFile (KERNEL32.@) * Maps a view of a file into the address space * * RETURNS * Starting address of mapped view * NULL: Failure */ LPVOID WINAPI MapViewOfFile( HANDLE mapping, /* [in] File-mapping object to map */ DWORD access, /* [in] Access mode */ DWORD offset_high, /* [in] High-order 32 bits of file offset */ DWORD offset_low, /* [in] Low-order 32 bits of file offset */ DWORD count /* [in] Number of bytes to map */ ) { return MapViewOfFileEx( mapping, access, offset_high, offset_low, count, NULL ); } /*********************************************************************** * MapViewOfFileEx (KERNEL32.@) * Maps a view of a file into the address space * * RETURNS * Starting address of mapped view * NULL: Failure */ LPVOID WINAPI MapViewOfFileEx( HANDLE handle, /* [in] File-mapping object to map */ DWORD access, /* [in] Access mode */ DWORD offset_high, /* [in] High-order 32 bits of file offset */ DWORD offset_low, /* [in] Low-order 32 bits of file offset */ DWORD count, /* [in] Number of bytes to map */ LPVOID addr /* [in] Suggested starting address for mapped view */ ) { FILE_VIEW *view; UINT size = 0; int flags = MAP_PRIVATE; int unix_handle = -1; int prot, res; void *base, *ptr = (void *)-1, *ret; DWORD size_low, size_high, header_size, shared_size; HANDLE shared_file; BOOL removable; /* Check parameters */ if ((offset_low & granularity_mask) || (addr && ((UINT_PTR)addr & granularity_mask))) { SetLastError( ERROR_INVALID_PARAMETER ); return NULL; } SERVER_START_REQ( get_mapping_info ) { req->handle = handle; res = SERVER_CALL_ERR(); prot = req->protect; base = req->base; size_low = req->size_low; size_high = req->size_high; header_size = req->header_size; shared_file = req->shared_file; shared_size = req->shared_size; removable = (req->drive_type == DRIVE_REMOVABLE || req->drive_type == DRIVE_CDROM); } SERVER_END_REQ; if (res) goto error; if ((unix_handle = FILE_GetUnixHandle( handle, 0 )) == -1) goto error; if (prot & VPROT_IMAGE) return map_image( handle, unix_handle, base, size_low, header_size, shared_file, shared_size, removable ); if (size_high) ERR("Sizes larger than 4Gb not supported\n"); if ((offset_low >= size_low) || (count > size_low - offset_low)) { SetLastError( ERROR_INVALID_PARAMETER ); goto error; } if (count) size = ROUND_SIZE( offset_low, count ); else size = size_low - offset_low; switch(access) { case FILE_MAP_ALL_ACCESS: case FILE_MAP_WRITE: case FILE_MAP_WRITE | FILE_MAP_READ: if (!(prot & VPROT_WRITE)) { SetLastError( ERROR_INVALID_PARAMETER ); goto error; } flags = MAP_SHARED; /* fall through */ case FILE_MAP_READ: case FILE_MAP_COPY: case FILE_MAP_COPY | FILE_MAP_READ: if (prot & VPROT_READ) break; /* fall through */ default: SetLastError( ERROR_INVALID_PARAMETER ); goto error; } /* FIXME: If a mapping is created with SEC_RESERVE and a process, * which has a view of this mapping commits some pages, they will * appear commited in all other processes, which have the same * view created. Since we don`t support this yet, we create the * whole mapping commited. */ prot |= VPROT_COMMITTED; /* Reserve a properly aligned area */ if ((ptr = anon_mmap_aligned( addr, size, PROT_NONE, 0 )) == (void *)-1) goto error; /* Map the file */ TRACE("handle=%x size=%x offset=%lx\n", handle, size, offset_low ); ret = VIRTUAL_mmap( unix_handle, ptr, size, offset_low, offset_high, VIRTUAL_GetUnixProt( prot ), flags | MAP_FIXED, &removable ); if (ret != ptr) { ERR( "VIRTUAL_mmap %p %x %lx%08lx failed\n", ptr, size, offset_high, offset_low ); goto error; } if (removable) handle = 0; /* don't keep handle open on removable media */ if (!(view = VIRTUAL_CreateView( ptr, size, 0, prot, handle ))) { SetLastError( ERROR_OUTOFMEMORY ); goto error; } if (unix_handle != -1) close( unix_handle ); return ptr; error: if (unix_handle != -1) close( unix_handle ); if (ptr != (void *)-1) munmap( ptr, size ); return NULL; } /*********************************************************************** * FlushViewOfFile (KERNEL32.@) * Writes to the disk a byte range within a mapped view of a file * * RETURNS * TRUE: Success * FALSE: Failure */ BOOL WINAPI FlushViewOfFile( LPCVOID base, /* [in] Start address of byte range to flush */ DWORD cbFlush /* [in] Number of bytes in range */ ) { FILE_VIEW *view; void *addr = ROUND_ADDR( base, page_mask ); TRACE("FlushViewOfFile at %p for %ld bytes\n", base, cbFlush ); if (!(view = VIRTUAL_FindView( addr ))) { SetLastError( ERROR_INVALID_PARAMETER ); return FALSE; } if (!cbFlush) cbFlush = view->size; if (!msync( addr, cbFlush, MS_SYNC )) return TRUE; SetLastError( ERROR_INVALID_PARAMETER ); return FALSE; } /*********************************************************************** * UnmapViewOfFile (KERNEL32.@) * Unmaps a mapped view of a file. * * NOTES * Should addr be an LPCVOID? * * RETURNS * TRUE: Success * FALSE: Failure */ BOOL WINAPI UnmapViewOfFile( LPVOID addr /* [in] Address where mapped view begins */ ) { FILE_VIEW *view; void *base = ROUND_ADDR( addr, page_mask ); if (!(view = VIRTUAL_FindView( base )) || (base != view->base)) { SetLastError( ERROR_INVALID_PARAMETER ); return FALSE; } VIRTUAL_DeleteView( view ); return TRUE; }