/* * Modules * * Copyright 1995 Alexandre Julliard * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ #include "config.h" #include "wine/port.h" #include #include #include #include #include #include #ifdef HAVE_UNISTD_H # include #endif #include "wine/winbase16.h" #include "winerror.h" #include "winternl.h" #include "heap.h" #include "file.h" #include "module.h" #include "wine/debug.h" #include "wine/unicode.h" #include "wine/server.h" WINE_DEFAULT_DEBUG_CHANNEL(module); WINE_DECLARE_DEBUG_CHANNEL(win32); WINE_DECLARE_DEBUG_CHANNEL(loaddll); WINE_MODREF *MODULE_modref_list = NULL; static WINE_MODREF *exe_modref; static int free_lib_count; /* recursion depth of FreeLibrary calls */ int process_detaching = 0; /* set on process detach to avoid deadlocks with thread detach */ CRITICAL_SECTION loader_section = CRITICAL_SECTION_INIT( "loader_section" ); /*********************************************************************** * wait_input_idle * * Wrapper to call WaitForInputIdle USER function */ typedef DWORD (WINAPI *WaitForInputIdle_ptr)( HANDLE hProcess, DWORD dwTimeOut ); static DWORD wait_input_idle( HANDLE process, DWORD timeout ) { HMODULE mod = GetModuleHandleA( "user32.dll" ); if (mod) { WaitForInputIdle_ptr ptr = (WaitForInputIdle_ptr)GetProcAddress( mod, "WaitForInputIdle" ); if (ptr) return ptr( process, timeout ); } return 0; } /************************************************************************* * MODULE32_LookupHMODULE * looks for the referenced HMODULE in the current process * NOTE: Assumes that the process critical section is held! */ WINE_MODREF *MODULE32_LookupHMODULE( HMODULE hmod ) { WINE_MODREF *wm; if (!hmod) return exe_modref; if (!HIWORD(hmod)) { ERR("tried to lookup %p in win32 module handler!\n",hmod); SetLastError( ERROR_INVALID_HANDLE ); return NULL; } for ( wm = MODULE_modref_list; wm; wm=wm->next ) if (wm->module == hmod) return wm; SetLastError( ERROR_INVALID_HANDLE ); return NULL; } /************************************************************************* * MODULE_AllocModRef * * Allocate a WINE_MODREF structure and add it to the process list * NOTE: Assumes that the process critical section is held! */ WINE_MODREF *MODULE_AllocModRef( HMODULE hModule, LPCSTR filename ) { WINE_MODREF *wm; DWORD long_len = strlen( filename ); DWORD short_len = GetShortPathNameA( filename, NULL, 0 ); if ((wm = HeapAlloc( GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(*wm) + long_len + short_len + 1 ))) { wm->module = hModule; wm->tlsindex = -1; wm->filename = wm->data; memcpy( wm->filename, filename, long_len + 1 ); if ((wm->modname = strrchr( wm->filename, '\\' ))) wm->modname++; else wm->modname = wm->filename; wm->short_filename = wm->filename + long_len + 1; GetShortPathNameA( wm->filename, wm->short_filename, short_len + 1 ); if ((wm->short_modname = strrchr( wm->short_filename, '\\' ))) wm->short_modname++; else wm->short_modname = wm->short_filename; wm->next = MODULE_modref_list; if (wm->next) wm->next->prev = wm; MODULE_modref_list = wm; if (!(RtlImageNtHeader(hModule)->FileHeader.Characteristics & IMAGE_FILE_DLL)) { if (!exe_modref) exe_modref = wm; else FIXME( "Trying to load second .EXE file: %s\n", filename ); } } return wm; } /************************************************************************* * MODULE_InitDLL */ BOOL MODULE_InitDLL( WINE_MODREF *wm, DWORD type, LPVOID lpReserved ) { BOOL retv = TRUE; static LPCSTR typeName[] = { "PROCESS_DETACH", "PROCESS_ATTACH", "THREAD_ATTACH", "THREAD_DETACH" }; assert( wm ); /* Skip calls for modules loaded with special load flags */ if (wm->flags & WINE_MODREF_DONT_RESOLVE_REFS) return TRUE; TRACE("(%s,%s,%p) - CALL\n", wm->modname, typeName[type], lpReserved ); /* Call the initialization routine */ retv = PE_InitDLL( wm->module, type, lpReserved ); /* The state of the module list may have changed due to the call to PE_InitDLL. We cannot assume that this module has not been deleted. */ TRACE("(%p,%s,%p) - RETURN %d\n", wm, typeName[type], lpReserved, retv ); return retv; } /************************************************************************* * MODULE_DllProcessAttach * * Send the process attach notification to all DLLs the given module * depends on (recursively). This is somewhat complicated due to the fact that * * - we have to respect the module dependencies, i.e. modules implicitly * referenced by another module have to be initialized before the module * itself can be initialized * * - the initialization routine of a DLL can itself call LoadLibrary, * thereby introducing a whole new set of dependencies (even involving * the 'old' modules) at any time during the whole process * * (Note that this routine can be recursively entered not only directly * from itself, but also via LoadLibrary from one of the called initialization * routines.) * * Furthermore, we need to rearrange the main WINE_MODREF list to allow * the process *detach* notifications to be sent in the correct order. * This must not only take into account module dependencies, but also * 'hidden' dependencies created by modules calling LoadLibrary in their * attach notification routine. * * The strategy is rather simple: we move a WINE_MODREF to the head of the * list after the attach notification has returned. This implies that the * detach notifications are called in the reverse of the sequence the attach * notifications *returned*. */ BOOL MODULE_DllProcessAttach( WINE_MODREF *wm, LPVOID lpReserved ) { BOOL retv = TRUE; int i; RtlEnterCriticalSection( &loader_section ); if (!wm) { wm = exe_modref; PE_InitTls(); } assert( wm ); /* prevent infinite recursion in case of cyclical dependencies */ if ( ( wm->flags & WINE_MODREF_MARKER ) || ( wm->flags & WINE_MODREF_PROCESS_ATTACHED ) ) goto done; TRACE("(%s,%p) - START\n", wm->modname, lpReserved ); /* Tag current MODREF to prevent recursive loop */ wm->flags |= WINE_MODREF_MARKER; /* Recursively attach all DLLs this one depends on */ for ( i = 0; retv && i < wm->nDeps; i++ ) if ( wm->deps[i] ) retv = MODULE_DllProcessAttach( wm->deps[i], lpReserved ); /* Call DLL entry point */ if ( retv ) { retv = MODULE_InitDLL( wm, DLL_PROCESS_ATTACH, lpReserved ); if ( retv ) wm->flags |= WINE_MODREF_PROCESS_ATTACHED; } /* Re-insert MODREF at head of list */ if ( retv && wm->prev ) { wm->prev->next = wm->next; if ( wm->next ) wm->next->prev = wm->prev; wm->prev = NULL; wm->next = MODULE_modref_list; MODULE_modref_list = wm->next->prev = wm; } /* Remove recursion flag */ wm->flags &= ~WINE_MODREF_MARKER; TRACE("(%s,%p) - END\n", wm->modname, lpReserved ); done: RtlLeaveCriticalSection( &loader_section ); return retv; } /************************************************************************* * MODULE_DllProcessDetach * * Send DLL process detach notifications. See the comment about calling * sequence at MODULE_DllProcessAttach. Unless the bForceDetach flag * is set, only DLLs with zero refcount are notified. */ void MODULE_DllProcessDetach( BOOL bForceDetach, LPVOID lpReserved ) { WINE_MODREF *wm; RtlEnterCriticalSection( &loader_section ); if (bForceDetach) process_detaching = 1; do { for ( wm = MODULE_modref_list; wm; wm = wm->next ) { /* Check whether to detach this DLL */ if ( !(wm->flags & WINE_MODREF_PROCESS_ATTACHED) ) continue; if ( wm->refCount > 0 && !bForceDetach ) continue; /* Call detach notification */ wm->flags &= ~WINE_MODREF_PROCESS_ATTACHED; MODULE_InitDLL( wm, DLL_PROCESS_DETACH, lpReserved ); /* Restart at head of WINE_MODREF list, as entries might have been added and/or removed while performing the call ... */ break; } } while ( wm ); RtlLeaveCriticalSection( &loader_section ); } /************************************************************************* * MODULE_DllThreadAttach * * Send DLL thread attach notifications. These are sent in the * reverse sequence of process detach notification. * */ void MODULE_DllThreadAttach( LPVOID lpReserved ) { WINE_MODREF *wm; /* don't do any attach calls if process is exiting */ if (process_detaching) return; /* FIXME: there is still a race here */ RtlEnterCriticalSection( &loader_section ); PE_InitTls(); for ( wm = MODULE_modref_list; wm; wm = wm->next ) if ( !wm->next ) break; for ( ; wm; wm = wm->prev ) { if ( !(wm->flags & WINE_MODREF_PROCESS_ATTACHED) ) continue; if ( wm->flags & WINE_MODREF_NO_DLL_CALLS ) continue; MODULE_InitDLL( wm, DLL_THREAD_ATTACH, lpReserved ); } RtlLeaveCriticalSection( &loader_section ); } /************************************************************************* * MODULE_DllThreadDetach * * Send DLL thread detach notifications. These are sent in the * same sequence as process detach notification. * */ void MODULE_DllThreadDetach( LPVOID lpReserved ) { WINE_MODREF *wm; /* don't do any detach calls if process is exiting */ if (process_detaching) return; /* FIXME: there is still a race here */ RtlEnterCriticalSection( &loader_section ); for ( wm = MODULE_modref_list; wm; wm = wm->next ) { if ( !(wm->flags & WINE_MODREF_PROCESS_ATTACHED) ) continue; if ( wm->flags & WINE_MODREF_NO_DLL_CALLS ) continue; MODULE_InitDLL( wm, DLL_THREAD_DETACH, lpReserved ); } RtlLeaveCriticalSection( &loader_section ); } /**************************************************************************** * DisableThreadLibraryCalls (KERNEL32.@) * * Don't call DllEntryPoint for DLL_THREAD_{ATTACH,DETACH} if set. */ BOOL WINAPI DisableThreadLibraryCalls( HMODULE hModule ) { NTSTATUS nts = LdrDisableThreadCalloutsForDll( hModule ); if (nts == STATUS_SUCCESS) return TRUE; SetLastError( RtlNtStatusToDosError( nts ) ); return FALSE; } /*********************************************************************** * MODULE_CreateDummyModule * * Create a dummy NE module for Win32 or Winelib. */ HMODULE16 MODULE_CreateDummyModule( LPCSTR filename, HMODULE module32 ) { HMODULE16 hModule; NE_MODULE *pModule; SEGTABLEENTRY *pSegment; char *pStr,*s; unsigned int len; const char* basename; OFSTRUCT *ofs; int of_size, size; /* Extract base filename */ basename = strrchr(filename, '\\'); if (!basename) basename = filename; else basename++; len = strlen(basename); if ((s = strchr(basename, '.'))) len = s - basename; /* Allocate module */ of_size = sizeof(OFSTRUCT) - sizeof(ofs->szPathName) + strlen(filename) + 1; size = sizeof(NE_MODULE) + /* loaded file info */ ((of_size + 3) & ~3) + /* segment table: DS,CS */ 2 * sizeof(SEGTABLEENTRY) + /* name table */ len + 2 + /* several empty tables */ 8; hModule = GlobalAlloc16( GMEM_MOVEABLE | GMEM_ZEROINIT, size ); if (!hModule) return (HMODULE16)11; /* invalid exe */ FarSetOwner16( hModule, hModule ); pModule = (NE_MODULE *)GlobalLock16( hModule ); /* Set all used entries */ pModule->magic = IMAGE_OS2_SIGNATURE; pModule->count = 1; pModule->next = 0; pModule->flags = 0; pModule->dgroup = 0; pModule->ss = 1; pModule->cs = 2; pModule->heap_size = 0; pModule->stack_size = 0; pModule->seg_count = 2; pModule->modref_count = 0; pModule->nrname_size = 0; pModule->fileinfo = sizeof(NE_MODULE); pModule->os_flags = NE_OSFLAGS_WINDOWS; pModule->self = hModule; pModule->module32 = module32; /* Set version and flags */ if (module32) { IMAGE_NT_HEADERS *nt = RtlImageNtHeader( module32 ); pModule->expected_version = ((nt->OptionalHeader.MajorSubsystemVersion & 0xff) << 8 ) | (nt->OptionalHeader.MinorSubsystemVersion & 0xff); pModule->flags |= NE_FFLAGS_WIN32; if (nt->FileHeader.Characteristics & IMAGE_FILE_DLL) pModule->flags |= NE_FFLAGS_LIBMODULE | NE_FFLAGS_SINGLEDATA; } /* Set loaded file information */ ofs = (OFSTRUCT *)(pModule + 1); memset( ofs, 0, of_size ); ofs->cBytes = of_size < 256 ? of_size : 255; /* FIXME */ strcpy( ofs->szPathName, filename ); pSegment = (SEGTABLEENTRY*)((char*)(pModule + 1) + ((of_size + 3) & ~3)); pModule->seg_table = (int)pSegment - (int)pModule; /* Data segment */ pSegment->size = 0; pSegment->flags = NE_SEGFLAGS_DATA; pSegment->minsize = 0x1000; pSegment++; /* Code segment */ pSegment->flags = 0; pSegment++; /* Module name */ pStr = (char *)pSegment; pModule->name_table = (int)pStr - (int)pModule; assert(len<256); *pStr = len; lstrcpynA( pStr+1, basename, len+1 ); pStr += len+2; /* All tables zero terminated */ pModule->res_table = pModule->import_table = pModule->entry_table = (int)pStr - (int)pModule; NE_RegisterModule( pModule ); return hModule; } /********************************************************************** * MODULE_FindModule * * Find a (loaded) win32 module depending on path * * RETURNS * the module handle if found * 0 if not */ WINE_MODREF *MODULE_FindModule( LPCSTR path /* [in] pathname of module/library to be found */ ) { WINE_MODREF *wm; char dllname[260], *p; /* Append .DLL to name if no extension present */ strcpy( dllname, path ); if (!(p = strrchr( dllname, '.')) || strchr( p, '/' ) || strchr( p, '\\')) strcat( dllname, ".DLL" ); for ( wm = MODULE_modref_list; wm; wm = wm->next ) { if ( !FILE_strcasecmp( dllname, wm->modname ) ) break; if ( !FILE_strcasecmp( dllname, wm->filename ) ) break; if ( !FILE_strcasecmp( dllname, wm->short_modname ) ) break; if ( !FILE_strcasecmp( dllname, wm->short_filename ) ) break; } return wm; } /* Check whether a file is an OS/2 or a very old Windows executable * by testing on import of KERNEL. * * FIXME: is reading the module imports the only way of discerning * old Windows binaries from OS/2 ones ? At least it seems so... */ static enum binary_type MODULE_Decide_OS2_OldWin(HANDLE hfile, const IMAGE_DOS_HEADER *mz, const IMAGE_OS2_HEADER *ne) { DWORD currpos = SetFilePointer( hfile, 0, NULL, SEEK_CUR); enum binary_type ret = BINARY_OS216; LPWORD modtab = NULL; LPSTR nametab = NULL; DWORD len; int i; /* read modref table */ if ( (SetFilePointer( hfile, mz->e_lfanew + ne->ne_modtab, NULL, SEEK_SET ) == -1) || (!(modtab = HeapAlloc( GetProcessHeap(), 0, ne->ne_cmod*sizeof(WORD)))) || (!(ReadFile(hfile, modtab, ne->ne_cmod*sizeof(WORD), &len, NULL))) || (len != ne->ne_cmod*sizeof(WORD)) ) goto broken; /* read imported names table */ if ( (SetFilePointer( hfile, mz->e_lfanew + ne->ne_imptab, NULL, SEEK_SET ) == -1) || (!(nametab = HeapAlloc( GetProcessHeap(), 0, ne->ne_enttab - ne->ne_imptab))) || (!(ReadFile(hfile, nametab, ne->ne_enttab - ne->ne_imptab, &len, NULL))) || (len != ne->ne_enttab - ne->ne_imptab) ) goto broken; for (i=0; i < ne->ne_cmod; i++) { LPSTR module = &nametab[modtab[i]]; TRACE("modref: %.*s\n", module[0], &module[1]); if (!(strncmp(&module[1], "KERNEL", module[0]))) { /* very old Windows file */ MESSAGE("This seems to be a very old (pre-3.0) Windows executable. Expect crashes, especially if this is a real-mode binary !\n"); ret = BINARY_WIN16; goto good; } } broken: ERR("Hmm, an error occurred. Is this binary file broken ?\n"); good: HeapFree( GetProcessHeap(), 0, modtab); HeapFree( GetProcessHeap(), 0, nametab); SetFilePointer( hfile, currpos, NULL, SEEK_SET); /* restore filepos */ return ret; } /*********************************************************************** * MODULE_GetBinaryType */ enum binary_type MODULE_GetBinaryType( HANDLE hfile ) { union { struct { unsigned char magic[4]; unsigned char ignored[12]; unsigned short type; } elf; IMAGE_DOS_HEADER mz; } header; char magic[4]; DWORD len; /* Seek to the start of the file and read the header information. */ if (SetFilePointer( hfile, 0, NULL, SEEK_SET ) == -1) return BINARY_UNKNOWN; if (!ReadFile( hfile, &header, sizeof(header), &len, NULL ) || len != sizeof(header)) return BINARY_UNKNOWN; if (!memcmp( header.elf.magic, "\177ELF", 4 )) { /* FIXME: we don't bother to check byte order, architecture, etc. */ switch(header.elf.type) { case 2: return BINARY_UNIX_EXE; case 3: return BINARY_UNIX_LIB; } return BINARY_UNKNOWN; } /* Not ELF, try DOS */ if (header.mz.e_magic == IMAGE_DOS_SIGNATURE) { /* We do have a DOS image so we will now try to seek into * the file by the amount indicated by the field * "Offset to extended header" and read in the * "magic" field information at that location. * This will tell us if there is more header information * to read or not. */ /* But before we do we will make sure that header * structure encompasses the "Offset to extended header" * field. */ if ((header.mz.e_cparhdr << 4) < sizeof(IMAGE_DOS_HEADER)) return BINARY_DOS; if (header.mz.e_crlc && (header.mz.e_lfarlc < sizeof(IMAGE_DOS_HEADER))) return BINARY_DOS; if (header.mz.e_lfanew < sizeof(IMAGE_DOS_HEADER)) return BINARY_DOS; if (SetFilePointer( hfile, header.mz.e_lfanew, NULL, SEEK_SET ) == -1) return BINARY_DOS; if (!ReadFile( hfile, magic, sizeof(magic), &len, NULL ) || len != sizeof(magic)) return BINARY_DOS; /* Reading the magic field succeeded so * we will try to determine what type it is. */ if (!memcmp( magic, "PE\0\0", 4 )) { IMAGE_FILE_HEADER FileHeader; if (ReadFile( hfile, &FileHeader, sizeof(FileHeader), &len, NULL ) && len == sizeof(FileHeader)) { if (FileHeader.Characteristics & IMAGE_FILE_DLL) return BINARY_PE_DLL; return BINARY_PE_EXE; } return BINARY_DOS; } if (!memcmp( magic, "NE", 2 )) { /* This is a Windows executable (NE) header. This can * mean either a 16-bit OS/2 or a 16-bit Windows or even a * DOS program (running under a DOS extender). To decide * which, we'll have to read the NE header. */ IMAGE_OS2_HEADER ne; if ( SetFilePointer( hfile, header.mz.e_lfanew, NULL, SEEK_SET ) != -1 && ReadFile( hfile, &ne, sizeof(ne), &len, NULL ) && len == sizeof(ne) ) { switch ( ne.ne_exetyp ) { case 2: return BINARY_WIN16; case 5: return BINARY_DOS; default: return MODULE_Decide_OS2_OldWin(hfile, &header.mz, &ne); } } /* Couldn't read header, so abort. */ return BINARY_DOS; } /* Unknown extended header, but this file is nonetheless DOS-executable. */ return BINARY_DOS; } return BINARY_UNKNOWN; } /*********************************************************************** * GetBinaryTypeA [KERNEL32.@] * GetBinaryType [KERNEL32.@] * * The GetBinaryType function determines whether a file is executable * or not and if it is it returns what type of executable it is. * The type of executable is a property that determines in which * subsystem an executable file runs under. * * Binary types returned: * SCS_32BIT_BINARY: A Win32 based application * SCS_DOS_BINARY: An MS-Dos based application * SCS_WOW_BINARY: A Win16 based application * SCS_PIF_BINARY: A PIF file that executes an MS-Dos based app * SCS_POSIX_BINARY: A POSIX based application ( Not implemented ) * SCS_OS216_BINARY: A 16bit OS/2 based application * * Returns TRUE if the file is an executable in which case * the value pointed by lpBinaryType is set. * Returns FALSE if the file is not an executable or if the function fails. * * To do so it opens the file and reads in the header information * if the extended header information is not present it will * assume that the file is a DOS executable. * If the extended header information is present it will * determine if the file is a 16 or 32 bit Windows executable * by check the flags in the header. * * Note that .COM and .PIF files are only recognized by their * file name extension; but Windows does it the same way ... */ BOOL WINAPI GetBinaryTypeA( LPCSTR lpApplicationName, LPDWORD lpBinaryType ) { BOOL ret = FALSE; HANDLE hfile; char *ptr; TRACE_(win32)("%s\n", lpApplicationName ); /* Sanity check. */ if ( lpApplicationName == NULL || lpBinaryType == NULL ) return FALSE; /* Open the file indicated by lpApplicationName for reading. */ hfile = CreateFileA( lpApplicationName, GENERIC_READ, FILE_SHARE_READ, NULL, OPEN_EXISTING, 0, 0 ); if ( hfile == INVALID_HANDLE_VALUE ) return FALSE; /* Check binary type */ switch(MODULE_GetBinaryType( hfile )) { case BINARY_UNKNOWN: /* try to determine from file name */ ptr = strrchr( lpApplicationName, '.' ); if (!ptr) break; if (!FILE_strcasecmp( ptr, ".COM" )) { *lpBinaryType = SCS_DOS_BINARY; ret = TRUE; } else if (!FILE_strcasecmp( ptr, ".PIF" )) { *lpBinaryType = SCS_PIF_BINARY; ret = TRUE; } break; case BINARY_PE_EXE: case BINARY_PE_DLL: *lpBinaryType = SCS_32BIT_BINARY; ret = TRUE; break; case BINARY_WIN16: *lpBinaryType = SCS_WOW_BINARY; ret = TRUE; break; case BINARY_OS216: *lpBinaryType = SCS_OS216_BINARY; ret = TRUE; break; case BINARY_DOS: *lpBinaryType = SCS_DOS_BINARY; ret = TRUE; break; case BINARY_UNIX_EXE: case BINARY_UNIX_LIB: ret = FALSE; break; } CloseHandle( hfile ); return ret; } /*********************************************************************** * GetBinaryTypeW [KERNEL32.@] */ BOOL WINAPI GetBinaryTypeW( LPCWSTR lpApplicationName, LPDWORD lpBinaryType ) { BOOL ret = FALSE; LPSTR strNew = NULL; TRACE_(win32)("%s\n", debugstr_w(lpApplicationName) ); /* Sanity check. */ if ( lpApplicationName == NULL || lpBinaryType == NULL ) return FALSE; /* Convert the wide string to a ascii string. */ strNew = HEAP_strdupWtoA( GetProcessHeap(), 0, lpApplicationName ); if ( strNew != NULL ) { ret = GetBinaryTypeA( strNew, lpBinaryType ); /* Free the allocated string. */ HeapFree( GetProcessHeap(), 0, strNew ); } return ret; } /*********************************************************************** * WinExec (KERNEL.166) */ HINSTANCE16 WINAPI WinExec16( LPCSTR lpCmdLine, UINT16 nCmdShow ) { LPCSTR p, args = NULL; LPCSTR name_beg, name_end; LPSTR name, cmdline; int arglen; HINSTANCE16 ret; char buffer[MAX_PATH]; if (*lpCmdLine == '"') /* has to be only one and only at beginning ! */ { name_beg = lpCmdLine+1; p = strchr ( lpCmdLine+1, '"' ); if (p) { name_end = p; args = strchr ( p, ' ' ); } else /* yes, even valid with trailing '"' missing */ name_end = lpCmdLine+strlen(lpCmdLine); } else { name_beg = lpCmdLine; args = strchr( lpCmdLine, ' ' ); name_end = args ? args : lpCmdLine+strlen(lpCmdLine); } if ((name_beg == lpCmdLine) && (!args)) { /* just use the original cmdline string as file name */ name = (LPSTR)lpCmdLine; } else { if (!(name = HeapAlloc( GetProcessHeap(), 0, name_end - name_beg + 1 ))) return ERROR_NOT_ENOUGH_MEMORY; memcpy( name, name_beg, name_end - name_beg ); name[name_end - name_beg] = '\0'; } if (args) { args++; arglen = strlen(args); cmdline = HeapAlloc( GetProcessHeap(), 0, 2 + arglen ); cmdline[0] = (BYTE)arglen; strcpy( cmdline + 1, args ); } else { cmdline = HeapAlloc( GetProcessHeap(), 0, 2 ); cmdline[0] = cmdline[1] = 0; } TRACE("name: '%s', cmdline: '%.*s'\n", name, cmdline[0], &cmdline[1]); if (SearchPathA( NULL, name, ".exe", sizeof(buffer), buffer, NULL )) { LOADPARAMS16 params; WORD showCmd[2]; showCmd[0] = 2; showCmd[1] = nCmdShow; params.hEnvironment = 0; params.cmdLine = MapLS( cmdline ); params.showCmd = MapLS( showCmd ); params.reserved = 0; ret = LoadModule16( buffer, ¶ms ); UnMapLS( params.cmdLine ); UnMapLS( params.showCmd ); } else ret = GetLastError(); HeapFree( GetProcessHeap(), 0, cmdline ); if (name != lpCmdLine) HeapFree( GetProcessHeap(), 0, name ); if (ret == 21) /* 32-bit module */ { DWORD count; ReleaseThunkLock( &count ); ret = LOWORD( WinExec( lpCmdLine, nCmdShow ) ); RestoreThunkLock( count ); } return ret; } /*********************************************************************** * WinExec (KERNEL32.@) */ UINT WINAPI WinExec( LPCSTR lpCmdLine, UINT nCmdShow ) { PROCESS_INFORMATION info; STARTUPINFOA startup; char *cmdline; UINT ret; memset( &startup, 0, sizeof(startup) ); startup.cb = sizeof(startup); startup.dwFlags = STARTF_USESHOWWINDOW; startup.wShowWindow = nCmdShow; /* cmdline needs to be writeable for CreateProcess */ if (!(cmdline = HeapAlloc( GetProcessHeap(), 0, strlen(lpCmdLine)+1 ))) return 0; strcpy( cmdline, lpCmdLine ); if (CreateProcessA( NULL, cmdline, NULL, NULL, FALSE, 0, NULL, NULL, &startup, &info )) { /* Give 30 seconds to the app to come up */ if (wait_input_idle( info.hProcess, 30000 ) == 0xFFFFFFFF) WARN("WaitForInputIdle failed: Error %ld\n", GetLastError() ); ret = 33; /* Close off the handles */ CloseHandle( info.hThread ); CloseHandle( info.hProcess ); } else if ((ret = GetLastError()) >= 32) { FIXME("Strange error set by CreateProcess: %d\n", ret ); ret = 11; } HeapFree( GetProcessHeap(), 0, cmdline ); return ret; } /********************************************************************** * LoadModule (KERNEL32.@) */ HINSTANCE WINAPI LoadModule( LPCSTR name, LPVOID paramBlock ) { LOADPARAMS *params = (LOADPARAMS *)paramBlock; PROCESS_INFORMATION info; STARTUPINFOA startup; HINSTANCE hInstance; LPSTR cmdline, p; char filename[MAX_PATH]; BYTE len; if (!name) return (HINSTANCE)ERROR_FILE_NOT_FOUND; if (!SearchPathA( NULL, name, ".exe", sizeof(filename), filename, NULL ) && !SearchPathA( NULL, name, NULL, sizeof(filename), filename, NULL )) return (HINSTANCE)GetLastError(); len = (BYTE)params->lpCmdLine[0]; if (!(cmdline = HeapAlloc( GetProcessHeap(), 0, strlen(filename) + len + 2 ))) return (HINSTANCE)ERROR_NOT_ENOUGH_MEMORY; strcpy( cmdline, filename ); p = cmdline + strlen(cmdline); *p++ = ' '; memcpy( p, params->lpCmdLine + 1, len ); p[len] = 0; memset( &startup, 0, sizeof(startup) ); startup.cb = sizeof(startup); if (params->lpCmdShow) { startup.dwFlags = STARTF_USESHOWWINDOW; startup.wShowWindow = params->lpCmdShow[1]; } if (CreateProcessA( filename, cmdline, NULL, NULL, FALSE, 0, params->lpEnvAddress, NULL, &startup, &info )) { /* Give 30 seconds to the app to come up */ if (wait_input_idle( info.hProcess, 30000 ) == 0xFFFFFFFF ) WARN("WaitForInputIdle failed: Error %ld\n", GetLastError() ); hInstance = (HINSTANCE)33; /* Close off the handles */ CloseHandle( info.hThread ); CloseHandle( info.hProcess ); } else if ((hInstance = (HINSTANCE)GetLastError()) >= (HINSTANCE)32) { FIXME("Strange error set by CreateProcess: %p\n", hInstance ); hInstance = (HINSTANCE)11; } HeapFree( GetProcessHeap(), 0, cmdline ); return hInstance; } /*********************************************************************** * GetModuleHandleA (KERNEL32.@) * GetModuleHandle32 (KERNEL.488) */ HMODULE WINAPI GetModuleHandleA(LPCSTR module) { WINE_MODREF *wm; if ( module == NULL ) wm = exe_modref; else wm = MODULE_FindModule( module ); return wm? wm->module : 0; } /*********************************************************************** * GetModuleHandleW (KERNEL32.@) */ HMODULE WINAPI GetModuleHandleW(LPCWSTR module) { HMODULE hModule; LPSTR modulea = HEAP_strdupWtoA( GetProcessHeap(), 0, module ); hModule = GetModuleHandleA( modulea ); HeapFree( GetProcessHeap(), 0, modulea ); return hModule; } /*********************************************************************** * GetModuleFileNameA (KERNEL32.@) * GetModuleFileName32 (KERNEL.487) * * GetModuleFileNameA seems to *always* return the long path; * it's only GetModuleFileName16 that decides between short/long path * by checking if exe version >= 4.0. * (SDK docu doesn't mention this) */ DWORD WINAPI GetModuleFileNameA( HMODULE hModule, /* [in] module handle (32bit) */ LPSTR lpFileName, /* [out] filenamebuffer */ DWORD size ) /* [in] size of filenamebuffer */ { RtlEnterCriticalSection( &loader_section ); lpFileName[0] = 0; if (!hModule && !(NtCurrentTeb()->tibflags & TEBF_WIN32)) { /* 16-bit task - get current NE module name */ NE_MODULE *pModule = NE_GetPtr( GetCurrentTask() ); if (pModule) GetLongPathNameA(NE_MODULE_NAME(pModule), lpFileName, size); } else { WINE_MODREF *wm = MODULE32_LookupHMODULE( hModule ); if (wm) lstrcpynA( lpFileName, wm->filename, size ); } RtlLeaveCriticalSection( &loader_section ); TRACE("%s\n", lpFileName ); return strlen(lpFileName); } /*********************************************************************** * GetModuleFileNameW (KERNEL32.@) */ DWORD WINAPI GetModuleFileNameW( HMODULE hModule, LPWSTR lpFileName, DWORD size ) { LPSTR fnA = HeapAlloc( GetProcessHeap(), 0, size * 2 ); if (!fnA) return 0; GetModuleFileNameA( hModule, fnA, size * 2 ); if (size > 0 && !MultiByteToWideChar( CP_ACP, 0, fnA, -1, lpFileName, size )) lpFileName[size-1] = 0; HeapFree( GetProcessHeap(), 0, fnA ); return strlenW(lpFileName); } /*********************************************************************** * LoadLibraryExA (KERNEL32.@) */ HMODULE WINAPI LoadLibraryExA(LPCSTR libname, HANDLE hfile, DWORD flags) { WINE_MODREF *wm; if(!libname) { SetLastError(ERROR_INVALID_PARAMETER); return 0; } if (flags & LOAD_LIBRARY_AS_DATAFILE) { char filename[256]; HMODULE hmod = 0; /* This method allows searching for the 'native' libraries only */ if (SearchPathA( NULL, libname, ".dll", sizeof(filename), filename, NULL )) { /* FIXME: maybe we should use the hfile parameter instead */ HANDLE hFile = CreateFileA( filename, GENERIC_READ, FILE_SHARE_READ, NULL, OPEN_EXISTING, 0, 0 ); if (hFile != INVALID_HANDLE_VALUE) { HANDLE mapping; switch (MODULE_GetBinaryType( hFile )) { case BINARY_PE_EXE: case BINARY_PE_DLL: mapping = CreateFileMappingA( hFile, NULL, PAGE_READONLY, 0, 0, NULL ); if (mapping) { hmod = (HMODULE)MapViewOfFile( mapping, FILE_MAP_READ, 0, 0, 0 ); CloseHandle( mapping ); } break; default: break; } CloseHandle( hFile ); } if (hmod) return (HMODULE)((ULONG_PTR)hmod + 1); } flags |= DONT_RESOLVE_DLL_REFERENCES; /* Just in case */ /* Fallback to normal behaviour */ } RtlEnterCriticalSection( &loader_section ); wm = MODULE_LoadLibraryExA( libname, hfile, flags ); if ( wm ) { if ( !MODULE_DllProcessAttach( wm, NULL ) ) { WARN_(module)("Attach failed for module '%s'.\n", libname); MODULE_FreeLibrary(wm); SetLastError(ERROR_DLL_INIT_FAILED); wm = NULL; } } RtlLeaveCriticalSection( &loader_section ); return wm ? wm->module : 0; } /*********************************************************************** * allocate_lib_dir * * helper for MODULE_LoadLibraryExA. Allocate space to hold the directory * portion of the provided name and put the name in it. * */ static LPCSTR allocate_lib_dir(LPCSTR libname) { LPCSTR p, pmax; LPSTR result; int length; pmax = libname; if ((p = strrchr( pmax, '\\' ))) pmax = p + 1; if ((p = strrchr( pmax, '/' ))) pmax = p + 1; /* Naughty. MSDN says don't */ if (pmax == libname && pmax[0] && pmax[1] == ':') pmax += 2; length = pmax - libname; result = HeapAlloc (GetProcessHeap(), 0, length+1); if (result) { strncpy (result, libname, length); result [length] = '\0'; } return result; } /*********************************************************************** * MODULE_LoadLibraryExA (internal) * * Load a PE style module according to the load order. * * The HFILE parameter is not used and marked reserved in the SDK. I can * only guess that it should force a file to be mapped, but I rather * ignore the parameter because it would be extremely difficult to * integrate this with different types of module representations. * * libdir is used to support LOAD_WITH_ALTERED_SEARCH_PATH during the recursion * on this function. When first called from LoadLibraryExA it will be * NULL but thereafter it may point to a buffer containing the path * portion of the library name. Note that the recursion all occurs * within a Critical section (see LoadLibraryExA) so the use of a * static is acceptable. * (We have to use a static variable at some point anyway, to pass the * information from BUILTIN32_dlopen through dlopen and the builtin's * init function into load_library). * allocated_libdir is TRUE in the stack frame that allocated libdir */ WINE_MODREF *MODULE_LoadLibraryExA( LPCSTR libname, HANDLE hfile, DWORD flags ) { DWORD err = GetLastError(); WINE_MODREF *pwm; int i; enum loadorder_type loadorder[LOADORDER_NTYPES]; LPSTR filename; const char *filetype = ""; DWORD found; BOOL allocated_libdir = FALSE; static LPCSTR libdir = NULL; /* See above */ if ( !libname ) return NULL; filename = HeapAlloc ( GetProcessHeap(), 0, MAX_PATH + 1 ); if ( !filename ) return NULL; *filename = 0; /* Just in case we don't set it before goto error */ RtlEnterCriticalSection( &loader_section ); if ((flags & LOAD_WITH_ALTERED_SEARCH_PATH) && FILE_contains_path(libname)) { if (!(libdir = allocate_lib_dir(libname))) goto error; allocated_libdir = TRUE; } if (!libdir || allocated_libdir) found = SearchPathA(NULL, libname, ".dll", MAX_PATH, filename, NULL); else found = DIR_SearchAlternatePath(libdir, libname, ".dll", MAX_PATH, filename, NULL); /* build the modules filename */ if (!found) { if (!MODULE_GetBuiltinPath( libname, ".dll", filename, MAX_PATH )) goto error; } /* Check for already loaded module */ if (!(pwm = MODULE_FindModule(filename)) && !FILE_contains_path(libname)) { LPSTR fn = HeapAlloc ( GetProcessHeap(), 0, MAX_PATH + 1 ); if (fn) { /* since the default loading mechanism uses a more detailed algorithm * than SearchPath (like using PATH, which can even be modified between * two attempts of loading the same DLL), the look-up above (with * SearchPath) can have put the file in system directory, whereas it * has already been loaded but with a different path. So do a specific * look-up with filename (without any path) */ strcpy ( fn, libname ); /* if the filename doesn't have an extension append .DLL */ if (!strrchr( fn, '.')) strcat( fn, ".dll" ); if ((pwm = MODULE_FindModule( fn )) != NULL) strcpy( filename, fn ); HeapFree( GetProcessHeap(), 0, fn ); } } if (pwm) { pwm->refCount++; if ((pwm->flags & WINE_MODREF_DONT_RESOLVE_REFS) && !(flags & DONT_RESOLVE_DLL_REFERENCES)) { pwm->flags &= ~WINE_MODREF_DONT_RESOLVE_REFS; PE_fixup_imports( pwm ); } TRACE("Already loaded module '%s' at %p, count=%d\n", filename, pwm->module, pwm->refCount); if (allocated_libdir) { HeapFree ( GetProcessHeap(), 0, (LPSTR)libdir ); libdir = NULL; } RtlLeaveCriticalSection( &loader_section ); HeapFree ( GetProcessHeap(), 0, filename ); return pwm; } MODULE_GetLoadOrder( loadorder, filename, TRUE); for(i = 0; i < LOADORDER_NTYPES; i++) { if (loadorder[i] == LOADORDER_INVALID) break; SetLastError( ERROR_FILE_NOT_FOUND ); switch(loadorder[i]) { case LOADORDER_DLL: TRACE("Trying native dll '%s'\n", filename); pwm = PE_LoadLibraryExA(filename, flags); filetype = "native"; break; case LOADORDER_SO: TRACE("Trying so-library '%s'\n", filename); pwm = ELF_LoadLibraryExA(filename, flags); filetype = "so"; break; case LOADORDER_BI: TRACE("Trying built-in '%s'\n", filename); pwm = BUILTIN32_LoadLibraryExA(filename, flags); filetype = "builtin"; break; default: pwm = NULL; break; } if(pwm) { /* Initialize DLL just loaded */ TRACE("Loaded module '%s' at %p\n", filename, pwm->module); if (!TRACE_ON(module)) TRACE_(loaddll)("Loaded module '%s' : %s\n", filename, filetype); /* Set the refCount here so that an attach failure will */ /* decrement the dependencies through the MODULE_FreeLibrary call. */ pwm->refCount = 1; if (allocated_libdir) { HeapFree ( GetProcessHeap(), 0, (LPSTR)libdir ); libdir = NULL; } RtlLeaveCriticalSection( &loader_section ); SetLastError( err ); /* restore last error */ HeapFree ( GetProcessHeap(), 0, filename ); return pwm; } if(GetLastError() != ERROR_FILE_NOT_FOUND) { WARN("Loading of %s DLL %s failed (error %ld).\n", filetype, filename, GetLastError()); break; } } error: if (allocated_libdir) { HeapFree ( GetProcessHeap(), 0, (LPSTR)libdir ); libdir = NULL; } RtlLeaveCriticalSection( &loader_section ); WARN("Failed to load module '%s'; error=%ld\n", filename, GetLastError()); HeapFree ( GetProcessHeap(), 0, filename ); return NULL; } /*********************************************************************** * LoadLibraryA (KERNEL32.@) */ HMODULE WINAPI LoadLibraryA(LPCSTR libname) { return LoadLibraryExA(libname,0,0); } /*********************************************************************** * LoadLibraryW (KERNEL32.@) */ HMODULE WINAPI LoadLibraryW(LPCWSTR libnameW) { return LoadLibraryExW(libnameW,0,0); } /*********************************************************************** * LoadLibrary32 (KERNEL.452) * LoadSystemLibrary32 (KERNEL.482) */ HMODULE WINAPI LoadLibrary32_16( LPCSTR libname ) { HMODULE hModule; DWORD count; ReleaseThunkLock( &count ); hModule = LoadLibraryA( libname ); RestoreThunkLock( count ); return hModule; } /*********************************************************************** * LoadLibraryExW (KERNEL32.@) */ HMODULE WINAPI LoadLibraryExW(LPCWSTR libnameW,HANDLE hfile,DWORD flags) { LPSTR libnameA = HEAP_strdupWtoA( GetProcessHeap(), 0, libnameW ); HMODULE ret = LoadLibraryExA( libnameA , hfile, flags ); HeapFree( GetProcessHeap(), 0, libnameA ); return ret; } /*********************************************************************** * MODULE_FlushModrefs * * NOTE: Assumes that the process critical section is held! * * Remove all unused modrefs and call the internal unloading routines * for the library type. */ static void MODULE_FlushModrefs(void) { WINE_MODREF *wm, *next; for(wm = MODULE_modref_list; wm; wm = next) { next = wm->next; if(wm->refCount) continue; /* Unlink this modref from the chain */ if(wm->next) wm->next->prev = wm->prev; if(wm->prev) wm->prev->next = wm->next; if(wm == MODULE_modref_list) MODULE_modref_list = wm->next; TRACE(" unloading %s\n", wm->filename); if (!TRACE_ON(module)) TRACE_(loaddll)("Unloaded module '%s' : %s\n", wm->filename, wm->dlhandle ? "builtin" : "native" ); SERVER_START_REQ( unload_dll ) { req->base = (void *)wm->module; wine_server_call( req ); } SERVER_END_REQ; if (wm->dlhandle) wine_dll_unload( wm->dlhandle ); else UnmapViewOfFile( (LPVOID)wm->module ); FreeLibrary16(wm->hDummyMod); HeapFree( GetProcessHeap(), 0, wm->deps ); HeapFree( GetProcessHeap(), 0, wm ); } } /*********************************************************************** * FreeLibrary (KERNEL32.@) * FreeLibrary32 (KERNEL.486) */ BOOL WINAPI FreeLibrary(HINSTANCE hLibModule) { BOOL retv = FALSE; WINE_MODREF *wm; if (!hLibModule) { SetLastError( ERROR_INVALID_HANDLE ); return FALSE; } if ((ULONG_PTR)hLibModule & 1) { /* this is a LOAD_LIBRARY_AS_DATAFILE module */ char *ptr = (char *)hLibModule - 1; UnmapViewOfFile( ptr ); return TRUE; } RtlEnterCriticalSection( &loader_section ); /* if we're stopping the whole process (and forcing the removal of all * DLLs) the library will be freed anyway */ if (process_detaching) retv = TRUE; else { free_lib_count++; if ((wm = MODULE32_LookupHMODULE( hLibModule ))) retv = MODULE_FreeLibrary( wm ); free_lib_count--; } RtlLeaveCriticalSection( &loader_section ); return retv; } /*********************************************************************** * MODULE_DecRefCount * * NOTE: Assumes that the process critical section is held! */ static void MODULE_DecRefCount( WINE_MODREF *wm ) { int i; if ( wm->flags & WINE_MODREF_MARKER ) return; if ( wm->refCount <= 0 ) return; --wm->refCount; TRACE("(%s) refCount: %d\n", wm->modname, wm->refCount ); if ( wm->refCount == 0 ) { wm->flags |= WINE_MODREF_MARKER; for ( i = 0; i < wm->nDeps; i++ ) if ( wm->deps[i] ) MODULE_DecRefCount( wm->deps[i] ); wm->flags &= ~WINE_MODREF_MARKER; } } /*********************************************************************** * MODULE_FreeLibrary * * NOTE: Assumes that the process critical section is held! */ BOOL MODULE_FreeLibrary( WINE_MODREF *wm ) { TRACE("(%s) - START\n", wm->modname ); /* Recursively decrement reference counts */ MODULE_DecRefCount( wm ); /* Call process detach notifications */ if ( free_lib_count <= 1 ) { MODULE_DllProcessDetach( FALSE, NULL ); MODULE_FlushModrefs(); } TRACE("END\n"); return TRUE; } /*********************************************************************** * FreeLibraryAndExitThread (KERNEL32.@) */ VOID WINAPI FreeLibraryAndExitThread(HINSTANCE hLibModule, DWORD dwExitCode) { FreeLibrary(hLibModule); ExitThread(dwExitCode); } /*********************************************************************** * PrivateLoadLibrary (KERNEL32.@) * * FIXME: rough guesswork, don't know what "Private" means */ HINSTANCE16 WINAPI PrivateLoadLibrary(LPCSTR libname) { return LoadLibrary16(libname); } /*********************************************************************** * PrivateFreeLibrary (KERNEL32.@) * * FIXME: rough guesswork, don't know what "Private" means */ void WINAPI PrivateFreeLibrary(HINSTANCE16 handle) { FreeLibrary16(handle); } /*********************************************************************** * GetProcAddress16 (KERNEL32.37) * Get procaddress in 16bit module from win32... (kernel32 undoc. ordinal func) */ FARPROC16 WINAPI WIN32_GetProcAddress16( HMODULE hModule, LPCSTR name ) { if (!hModule) { WARN("hModule may not be 0!\n"); return (FARPROC16)0; } if (HIWORD(hModule)) { WARN("hModule is Win32 handle (%p)\n", hModule ); return (FARPROC16)0; } return GetProcAddress16( LOWORD(hModule), name ); } /*********************************************************************** * GetProcAddress (KERNEL.50) */ FARPROC16 WINAPI GetProcAddress16( HMODULE16 hModule, LPCSTR name ) { WORD ordinal; FARPROC16 ret; if (!hModule) hModule = GetCurrentTask(); hModule = GetExePtr( hModule ); if (HIWORD(name) != 0) { ordinal = NE_GetOrdinal( hModule, name ); TRACE("%04x '%s'\n", hModule, name ); } else { ordinal = LOWORD(name); TRACE("%04x %04x\n", hModule, ordinal ); } if (!ordinal) return (FARPROC16)0; ret = NE_GetEntryPoint( hModule, ordinal ); TRACE("returning %08x\n", (UINT)ret ); return ret; } /*********************************************************************** * GetProcAddress (KERNEL32.@) */ FARPROC WINAPI GetProcAddress( HMODULE hModule, LPCSTR function ) { return MODULE_GetProcAddress( hModule, function, -1, TRUE ); } /*********************************************************************** * GetProcAddress32 (KERNEL.453) */ FARPROC WINAPI GetProcAddress32_16( HMODULE hModule, LPCSTR function ) { return MODULE_GetProcAddress( hModule, function, -1, FALSE ); } /*********************************************************************** * MODULE_GetProcAddress (internal) */ FARPROC MODULE_GetProcAddress( HMODULE hModule, /* [in] current module handle */ LPCSTR function, /* [in] function to be looked up */ int hint, BOOL snoop ) { WINE_MODREF *wm; FARPROC retproc = 0; if (HIWORD(function)) TRACE_(win32)("(%08lx,%s (%d))\n",(DWORD)hModule,function,hint); else TRACE_(win32)("(%08lx,%p)\n",(DWORD)hModule,function); RtlEnterCriticalSection( &loader_section ); if ((wm = MODULE32_LookupHMODULE( hModule ))) { retproc = wm->find_export( wm, function, hint, snoop ); if (!retproc) SetLastError(ERROR_PROC_NOT_FOUND); } RtlLeaveCriticalSection( &loader_section ); return retproc; } /*************************************************************************** * HasGPHandler (KERNEL.338) */ #include "pshpack1.h" typedef struct _GPHANDLERDEF { WORD selector; WORD rangeStart; WORD rangeEnd; WORD handler; } GPHANDLERDEF; #include "poppack.h" SEGPTR WINAPI HasGPHandler16( SEGPTR address ) { HMODULE16 hModule; int gpOrdinal; SEGPTR gpPtr; GPHANDLERDEF *gpHandler; if ( (hModule = FarGetOwner16( SELECTOROF(address) )) != 0 && (gpOrdinal = NE_GetOrdinal( hModule, "__GP" )) != 0 && (gpPtr = (SEGPTR)NE_GetEntryPointEx( hModule, gpOrdinal, FALSE )) != 0 && !IsBadReadPtr16( gpPtr, sizeof(GPHANDLERDEF) ) && (gpHandler = MapSL( gpPtr )) != NULL ) { while (gpHandler->selector) { if ( SELECTOROF(address) == gpHandler->selector && OFFSETOF(address) >= gpHandler->rangeStart && OFFSETOF(address) < gpHandler->rangeEnd ) return MAKESEGPTR( gpHandler->selector, gpHandler->handler ); gpHandler++; } } return 0; }