/* * Loader functions * * Copyright 1995, 2003 Alexandre Julliard * Copyright 2002 Dmitry Timoshkov for CodeWeavers * * 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 #include #include "windef.h" #include "winbase.h" #include "winnt.h" #include "winreg.h" #include "winternl.h" #include "module.h" #include "file.h" #include "wine/exception.h" #include "excpt.h" #include "snoop.h" #include "wine/debug.h" #include "wine/server.h" #include "ntdll_misc.h" WINE_DEFAULT_DEBUG_CHANNEL(module); WINE_DECLARE_DEBUG_CHANNEL(relay); WINE_DECLARE_DEBUG_CHANNEL(snoop); WINE_DECLARE_DEBUG_CHANNEL(loaddll); typedef DWORD (CALLBACK *DLLENTRYPROC)(HMODULE,DWORD,LPVOID); static int process_detaching = 0; /* set on process detach to avoid deadlocks with thread detach */ static int free_lib_count; /* recursion depth of LdrUnloadDll calls */ /* filter for page-fault exceptions */ static WINE_EXCEPTION_FILTER(page_fault) { if (GetExceptionCode() == EXCEPTION_ACCESS_VIOLATION) return EXCEPTION_EXECUTE_HANDLER; return EXCEPTION_CONTINUE_SEARCH; } static const char * const reason_names[] = { "PROCESS_DETACH", "PROCESS_ATTACH", "THREAD_ATTACH", "THREAD_DETACH" }; static UINT tls_module_count; /* number of modules with TLS directory */ static UINT tls_total_size; /* total size of TLS storage */ static const IMAGE_TLS_DIRECTORY **tls_dirs; /* array of TLS directories */ static CRITICAL_SECTION loader_section; static CRITICAL_SECTION_DEBUG critsect_debug = { 0, 0, &loader_section, { &critsect_debug.ProcessLocksList, &critsect_debug.ProcessLocksList }, 0, 0, { 0, (DWORD)(__FILE__ ": loader_section") } }; static CRITICAL_SECTION loader_section = { &critsect_debug, -1, 0, 0, 0, 0 }; static WINE_MODREF *cached_modref; static WINE_MODREF *current_modref; static NTSTATUS load_dll( LPCSTR libname, DWORD flags, WINE_MODREF** pwm ); static FARPROC find_named_export( HMODULE module, IMAGE_EXPORT_DIRECTORY *exports, DWORD exp_size, const char *name, int hint ); /* convert PE image VirtualAddress to Real Address */ inline static void *get_rva( HMODULE module, DWORD va ) { return (void *)((char *)module + va); } /************************************************************************* * get_modref * * Looks for the referenced HMODULE in the current process * The loader_section must be locked while calling this function. */ static WINE_MODREF *get_modref( HMODULE hmod ) { PLIST_ENTRY mark, entry; PLDR_MODULE mod; if (cached_modref && cached_modref->ldr.BaseAddress == hmod) return cached_modref; mark = &NtCurrentTeb()->Peb->LdrData->InMemoryOrderModuleList; for (entry = mark->Flink; entry != mark; entry = entry->Flink) { mod = CONTAINING_RECORD(entry, LDR_MODULE, InMemoryOrderModuleList); if (mod->BaseAddress == hmod) return cached_modref = CONTAINING_RECORD(mod, WINE_MODREF, ldr); if (mod->BaseAddress > (void*)hmod) break; } return NULL; } /************************************************************************* * find_forwarded_export * * Find the final function pointer for a forwarded function. * The loader_section must be locked while calling this function. */ static FARPROC find_forwarded_export( HMODULE module, const char *forward ) { IMAGE_EXPORT_DIRECTORY *exports; DWORD exp_size; WINE_MODREF *wm; char mod_name[256]; char *end = strchr(forward, '.'); FARPROC proc = NULL; if (!end) return NULL; if (end - forward >= sizeof(mod_name)) return NULL; memcpy( mod_name, forward, end - forward ); mod_name[end-forward] = 0; if (!(wm = MODULE_FindModule( mod_name ))) { ERR("module not found for forward '%s' used by '%s'\n", forward, get_modref(module)->filename ); return NULL; } if ((exports = RtlImageDirectoryEntryToData( wm->ldr.BaseAddress, TRUE, IMAGE_DIRECTORY_ENTRY_EXPORT, &exp_size ))) proc = find_named_export( wm->ldr.BaseAddress, exports, exp_size, end + 1, -1 ); if (!proc) { ERR("function not found for forward '%s' used by '%s'." " If you are using builtin '%s', try using the native one instead.\n", forward, get_modref(module)->filename, get_modref(module)->modname ); } return proc; } /************************************************************************* * find_ordinal_export * * Find an exported function by ordinal. * The exports base must have been subtracted from the ordinal already. * The loader_section must be locked while calling this function. */ static FARPROC find_ordinal_export( HMODULE module, IMAGE_EXPORT_DIRECTORY *exports, DWORD exp_size, int ordinal ) { FARPROC proc; DWORD *functions = get_rva( module, exports->AddressOfFunctions ); if (ordinal >= exports->NumberOfFunctions) { TRACE(" ordinal %ld out of range!\n", ordinal + exports->Base ); return NULL; } if (!functions[ordinal]) return NULL; proc = get_rva( module, functions[ordinal] ); /* if the address falls into the export dir, it's a forward */ if (((char *)proc >= (char *)exports) && ((char *)proc < (char *)exports + exp_size)) return find_forwarded_export( module, (char *)proc ); if (TRACE_ON(snoop)) { proc = SNOOP_GetProcAddress( module, exports, exp_size, proc, ordinal ); } if (TRACE_ON(relay) && current_modref) { proc = RELAY_GetProcAddress( module, exports, exp_size, proc, current_modref->modname ); } return proc; } /************************************************************************* * find_named_export * * Find an exported function by name. * The loader_section must be locked while calling this function. */ static FARPROC find_named_export( HMODULE module, IMAGE_EXPORT_DIRECTORY *exports, DWORD exp_size, const char *name, int hint ) { WORD *ordinals = get_rva( module, exports->AddressOfNameOrdinals ); DWORD *names = get_rva( module, exports->AddressOfNames ); int min = 0, max = exports->NumberOfNames - 1; /* first check the hint */ if (hint >= 0 && hint <= max) { char *ename = get_rva( module, names[hint] ); if (!strcmp( ename, name )) return find_ordinal_export( module, exports, exp_size, ordinals[hint] ); } /* then do a binary search */ while (min <= max) { int res, pos = (min + max) / 2; char *ename = get_rva( module, names[pos] ); if (!(res = strcmp( ename, name ))) return find_ordinal_export( module, exports, exp_size, ordinals[pos] ); if (res > 0) max = pos - 1; else min = pos + 1; } return NULL; } /************************************************************************* * import_dll * * Import the dll specified by the given import descriptor. * The loader_section must be locked while calling this function. */ static WINE_MODREF *import_dll( HMODULE module, IMAGE_IMPORT_DESCRIPTOR *descr ) { NTSTATUS status; WINE_MODREF *wmImp; HMODULE imp_mod; IMAGE_EXPORT_DIRECTORY *exports; DWORD exp_size; IMAGE_THUNK_DATA *import_list, *thunk_list; char *name = get_rva( module, descr->Name ); status = load_dll( name, 0, &wmImp ); if (status) { if (status == STATUS_NO_SUCH_FILE) ERR("Module (file) %s (which is needed by %s) not found\n", name, current_modref->filename); else ERR("Loading module (file) %s (which is needed by %s) failed (error %lx).\n", name, current_modref->filename, status); return NULL; } imp_mod = wmImp->ldr.BaseAddress; if (!(exports = RtlImageDirectoryEntryToData( imp_mod, TRUE, IMAGE_DIRECTORY_ENTRY_EXPORT, &exp_size ))) return NULL; thunk_list = get_rva( module, (DWORD)descr->FirstThunk ); if (descr->u.OriginalFirstThunk) import_list = get_rva( module, (DWORD)descr->u.OriginalFirstThunk ); else import_list = thunk_list; while (import_list->u1.Ordinal) { if (IMAGE_SNAP_BY_ORDINAL(import_list->u1.Ordinal)) { int ordinal = IMAGE_ORDINAL(import_list->u1.Ordinal); TRACE("--- Ordinal %s,%d\n", name, ordinal); thunk_list->u1.Function = (PDWORD)find_ordinal_export( imp_mod, exports, exp_size, ordinal - exports->Base ); if (!thunk_list->u1.Function) { ERR("No implementation for %s.%d imported from %s, setting to 0xdeadbeef\n", name, ordinal, current_modref->filename ); thunk_list->u1.Function = (PDWORD)0xdeadbeef; } } else /* import by name */ { IMAGE_IMPORT_BY_NAME *pe_name; pe_name = get_rva( module, (DWORD)import_list->u1.AddressOfData ); TRACE("--- %s %s.%d\n", pe_name->Name, name, pe_name->Hint); thunk_list->u1.Function = (PDWORD)find_named_export( imp_mod, exports, exp_size, pe_name->Name, pe_name->Hint ); if (!thunk_list->u1.Function) { ERR("No implementation for %s.%s imported from %s, setting to 0xdeadbeef\n", name, pe_name->Name, current_modref->filename ); thunk_list->u1.Function = (PDWORD)0xdeadbeef; } } import_list++; thunk_list++; } return wmImp; } /**************************************************************** * PE_fixup_imports * * Fixup all imports of a given module. * The loader_section must be locked while calling this function. */ DWORD PE_fixup_imports( WINE_MODREF *wm ) { int i, nb_imports; IMAGE_IMPORT_DESCRIPTOR *imports; WINE_MODREF *prev; DWORD size; if (!(imports = RtlImageDirectoryEntryToData( wm->ldr.BaseAddress, TRUE, IMAGE_DIRECTORY_ENTRY_IMPORT, &size ))) return 0; nb_imports = size / sizeof(*imports); for (i = 0; i < nb_imports; i++) { if (!imports[i].Name) { nb_imports = i; break; } } if (!nb_imports) return 0; /* no imports */ /* Allocate module dependency list */ wm->nDeps = nb_imports; wm->deps = RtlAllocateHeap( ntdll_get_process_heap(), 0, nb_imports*sizeof(WINE_MODREF *) ); /* load the imported modules. They are automatically * added to the modref list of the process. */ prev = current_modref; current_modref = wm; for (i = 0; i < nb_imports; i++) { if (!(wm->deps[i] = import_dll( wm->ldr.BaseAddress, &imports[i] ))) break; } current_modref = prev; return (i < nb_imports); } /************************************************************************* * MODULE_AllocModRef * * Allocate a WINE_MODREF structure and add it to the process list * The loader_section must be locked while calling this function. */ WINE_MODREF *MODULE_AllocModRef( HMODULE hModule, LPCSTR filename ) { WINE_MODREF *wm; IMAGE_NT_HEADERS *nt = RtlImageNtHeader(hModule); PLIST_ENTRY entry, mark; BOOLEAN linked = FALSE; DWORD long_len = strlen( filename ); DWORD short_len = GetShortPathNameA( filename, NULL, 0 ); if ((wm = RtlAllocateHeap( ntdll_get_process_heap(), HEAP_ZERO_MEMORY, sizeof(*wm) + long_len + short_len + 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->ldr.BaseAddress = hModule; wm->ldr.EntryPoint = (nt->OptionalHeader.AddressOfEntryPoint) ? ((char *)hModule + nt->OptionalHeader.AddressOfEntryPoint) : 0; wm->ldr.SizeOfImage = nt->OptionalHeader.SizeOfImage; RtlCreateUnicodeStringFromAsciiz( &wm->ldr.FullDllName, wm->filename); RtlCreateUnicodeStringFromAsciiz( &wm->ldr.BaseDllName, wm->modname); wm->ldr.Flags = 0; wm->ldr.LoadCount = 0; wm->ldr.TlsIndex = -1; wm->ldr.SectionHandle = NULL; wm->ldr.CheckSum = 0; wm->ldr.TimeDateStamp = 0; /* this is a bit ugly, but we need to have app module first in LoadOrder * list, But in wine, ntdll is loaded first, so by inserting DLLs at the tail * and app module at the head we insure that order */ if (!(nt->FileHeader.Characteristics & IMAGE_FILE_DLL)) { /* is first loaded module a DLL or an exec ? */ mark = &NtCurrentTeb()->Peb->LdrData->InLoadOrderModuleList; if (mark->Flink == mark || (CONTAINING_RECORD(mark->Flink, LDR_MODULE, InLoadOrderModuleList)->Flags & LDR_IMAGE_IS_DLL)) { InsertHeadList(&NtCurrentTeb()->Peb->LdrData->InLoadOrderModuleList, &wm->ldr.InLoadOrderModuleList); linked = TRUE; } } else wm->ldr.Flags |= LDR_IMAGE_IS_DLL; if (!linked) InsertTailList(&NtCurrentTeb()->Peb->LdrData->InLoadOrderModuleList, &wm->ldr.InLoadOrderModuleList); /* insert module in MemoryList, sorted in increasing base addresses */ mark = &NtCurrentTeb()->Peb->LdrData->InMemoryOrderModuleList; for (entry = mark->Flink; entry != mark; entry = entry->Flink) { if (CONTAINING_RECORD(entry, LDR_MODULE, InMemoryOrderModuleList)->BaseAddress > wm->ldr.BaseAddress) break; } entry->Blink->Flink = &wm->ldr.InMemoryOrderModuleList; wm->ldr.InMemoryOrderModuleList.Blink = entry->Blink; wm->ldr.InMemoryOrderModuleList.Flink = entry; entry->Blink = &wm->ldr.InMemoryOrderModuleList; /* wait until init is called for inserting into this list */ wm->ldr.InInitializationOrderModuleList.Flink = NULL; wm->ldr.InInitializationOrderModuleList.Blink = NULL; } return wm; } /************************************************************************* * alloc_process_tls * * Allocate the process-wide structure for module TLS storage. */ static NTSTATUS alloc_process_tls(void) { PLIST_ENTRY mark, entry; PLDR_MODULE mod; IMAGE_TLS_DIRECTORY *dir; ULONG size, i; mark = &NtCurrentTeb()->Peb->LdrData->InMemoryOrderModuleList; for (entry = mark->Flink; entry != mark; entry = entry->Flink) { mod = CONTAINING_RECORD(entry, LDR_MODULE, InMemoryOrderModuleList); if (!(dir = RtlImageDirectoryEntryToData( mod->BaseAddress, TRUE, IMAGE_DIRECTORY_ENTRY_TLS, &size ))) continue; size = (dir->EndAddressOfRawData - dir->StartAddressOfRawData) + dir->SizeOfZeroFill; if (!size) continue; tls_total_size += size; tls_module_count++; } if (!tls_module_count) return STATUS_SUCCESS; TRACE( "count %u size %u\n", tls_module_count, tls_total_size ); tls_dirs = RtlAllocateHeap( ntdll_get_process_heap(), 0, tls_module_count * sizeof(*tls_dirs) ); if (!tls_dirs) return STATUS_NO_MEMORY; for (i = 0, entry = mark->Flink; entry != mark; entry = entry->Flink) { mod = CONTAINING_RECORD(entry, LDR_MODULE, InMemoryOrderModuleList); if (!(dir = RtlImageDirectoryEntryToData( mod->BaseAddress, TRUE, IMAGE_DIRECTORY_ENTRY_TLS, &size ))) continue; tls_dirs[i] = dir; *dir->AddressOfIndex = i; mod->TlsIndex = i; mod->LoadCount = -1; /* can't unload it */ i++; } return STATUS_SUCCESS; } /************************************************************************* * alloc_thread_tls * * Allocate the per-thread structure for module TLS storage. */ static NTSTATUS alloc_thread_tls(void) { void **pointers; char *data; UINT i; if (!tls_module_count) return STATUS_SUCCESS; if (!(pointers = RtlAllocateHeap( ntdll_get_process_heap(), 0, tls_module_count * sizeof(*pointers) ))) return STATUS_NO_MEMORY; if (!(data = RtlAllocateHeap( ntdll_get_process_heap(), 0, tls_total_size ))) { RtlFreeHeap( ntdll_get_process_heap(), 0, pointers ); return STATUS_NO_MEMORY; } for (i = 0; i < tls_module_count; i++) { const IMAGE_TLS_DIRECTORY *dir = tls_dirs[i]; ULONG size = dir->EndAddressOfRawData - dir->StartAddressOfRawData; TRACE( "thread %04lx idx %d: %ld/%ld bytes from %p to %p\n", GetCurrentThreadId(), i, size, dir->SizeOfZeroFill, (void *)dir->StartAddressOfRawData, data ); pointers[i] = data; memcpy( data, (void *)dir->StartAddressOfRawData, size ); data += size; memset( data, 0, dir->SizeOfZeroFill ); data += dir->SizeOfZeroFill; } NtCurrentTeb()->ThreadLocalStoragePointer = pointers; return STATUS_SUCCESS; } /************************************************************************* * call_tls_callbacks */ static void call_tls_callbacks( HMODULE module, UINT reason ) { const IMAGE_TLS_DIRECTORY *dir; const PIMAGE_TLS_CALLBACK *callback; ULONG dirsize; dir = RtlImageDirectoryEntryToData( module, TRUE, IMAGE_DIRECTORY_ENTRY_TLS, &dirsize ); if (!dir || !dir->AddressOfCallBacks) return; for (callback = dir->AddressOfCallBacks; *callback; callback++) { if (TRACE_ON(relay)) DPRINTF("%04lx:Call TLS callback (proc=%p,module=%p,reason=%s,reserved=0)\n", GetCurrentThreadId(), *callback, module, reason_names[reason] ); (*callback)( module, reason, NULL ); if (TRACE_ON(relay)) DPRINTF("%04lx:Ret TLS callback (proc=%p,module=%p,reason=%s,reserved=0)\n", GetCurrentThreadId(), *callback, module, reason_names[reason] ); } } /************************************************************************* * MODULE_InitDLL */ static BOOL MODULE_InitDLL( WINE_MODREF *wm, UINT reason, LPVOID lpReserved ) { char mod_name[32]; BOOL retv = TRUE; DLLENTRYPROC entry = wm->ldr.EntryPoint; void *module = wm->ldr.BaseAddress; /* Skip calls for modules loaded with special load flags */ if (wm->ldr.Flags & LDR_DONT_RESOLVE_REFS) return TRUE; if (wm->ldr.TlsIndex != -1) call_tls_callbacks( wm->ldr.BaseAddress, reason ); if (!entry || !(wm->ldr.Flags & LDR_IMAGE_IS_DLL)) return TRUE; if (TRACE_ON(relay)) { size_t len = max( strlen(wm->modname), sizeof(mod_name)-1 ); memcpy( mod_name, wm->modname, len ); mod_name[len] = 0; DPRINTF("%04lx:Call PE DLL (proc=%p,module=%p (%s),reason=%s,res=%p)\n", GetCurrentThreadId(), entry, module, mod_name, reason_names[reason], lpReserved ); } else TRACE("(%p (%s),%s,%p) - CALL\n", module, wm->modname, reason_names[reason], lpReserved ); retv = entry( module, reason, lpReserved ); /* The state of the module list may have changed due to the call to the dll. We cannot assume that this module has not been deleted. */ if (TRACE_ON(relay)) DPRINTF("%04lx:Ret PE DLL (proc=%p,module=%p (%s),reason=%s,res=%p) retval=%x\n", GetCurrentThreadId(), entry, module, mod_name, reason_names[reason], lpReserved, retv ); else TRACE("(%p,%s,%p) - RETURN %d\n", module, reason_names[reason], 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*. */ NTSTATUS MODULE_DllProcessAttach( WINE_MODREF *wm, LPVOID lpReserved ) { NTSTATUS status = STATUS_SUCCESS; int i; RtlEnterCriticalSection( &loader_section ); if (!wm) { PLIST_ENTRY mark; mark = &NtCurrentTeb()->Peb->LdrData->InLoadOrderModuleList; wm = CONTAINING_RECORD(CONTAINING_RECORD(mark->Flink, LDR_MODULE, InLoadOrderModuleList), WINE_MODREF, ldr); wm->ldr.LoadCount = -1; /* can't unload main exe */ if ((status = alloc_process_tls()) != STATUS_SUCCESS) goto done; if ((status = alloc_thread_tls()) != STATUS_SUCCESS) goto done; } assert( wm ); /* prevent infinite recursion in case of cyclical dependencies */ if ( ( wm->ldr.Flags & LDR_LOAD_IN_PROGRESS ) || ( wm->ldr.Flags & LDR_PROCESS_ATTACHED ) ) goto done; TRACE("(%s,%p) - START\n", wm->modname, lpReserved ); /* Tag current MODREF to prevent recursive loop */ wm->ldr.Flags |= LDR_LOAD_IN_PROGRESS; /* Recursively attach all DLLs this one depends on */ for ( i = 0; i < wm->nDeps; i++ ) { if (!wm->deps[i]) continue; if ((status = MODULE_DllProcessAttach( wm->deps[i], lpReserved )) != STATUS_SUCCESS) break; } /* Call DLL entry point */ if (status == STATUS_SUCCESS) { WINE_MODREF *prev = current_modref; current_modref = wm; if (MODULE_InitDLL( wm, DLL_PROCESS_ATTACH, lpReserved )) wm->ldr.Flags |= LDR_PROCESS_ATTACHED; else status = STATUS_DLL_INIT_FAILED; current_modref = prev; } InsertTailList(&NtCurrentTeb()->Peb->LdrData->InInitializationOrderModuleList, &wm->ldr.InInitializationOrderModuleList); /* Remove recursion flag */ wm->ldr.Flags &= ~LDR_LOAD_IN_PROGRESS; TRACE("(%s,%p) - END\n", wm->modname, lpReserved ); done: RtlLeaveCriticalSection( &loader_section ); return status; } /************************************************************************* * 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. */ static void MODULE_DllProcessDetach( BOOL bForceDetach, LPVOID lpReserved ) { PLIST_ENTRY mark, entry; PLDR_MODULE mod; RtlEnterCriticalSection( &loader_section ); if (bForceDetach) process_detaching = 1; mark = &NtCurrentTeb()->Peb->LdrData->InInitializationOrderModuleList; do { for (entry = mark->Blink; entry != mark; entry = entry->Blink) { mod = CONTAINING_RECORD(entry, LDR_MODULE, InInitializationOrderModuleList); /* Check whether to detach this DLL */ if ( !(mod->Flags & LDR_PROCESS_ATTACHED) ) continue; if ( mod->LoadCount && !bForceDetach ) continue; /* Call detach notification */ mod->Flags &= ~LDR_PROCESS_ATTACHED; MODULE_InitDLL( CONTAINING_RECORD(mod, WINE_MODREF, ldr), 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 (entry != mark); RtlLeaveCriticalSection( &loader_section ); } /************************************************************************* * MODULE_DllThreadAttach * * Send DLL thread attach notifications. These are sent in the * reverse sequence of process detach notification. * */ NTSTATUS MODULE_DllThreadAttach( LPVOID lpReserved ) { PLIST_ENTRY mark, entry; PLDR_MODULE mod; NTSTATUS status; /* don't do any attach calls if process is exiting */ if (process_detaching) return STATUS_SUCCESS; /* FIXME: there is still a race here */ RtlEnterCriticalSection( &loader_section ); if ((status = alloc_thread_tls()) != STATUS_SUCCESS) goto done; mark = &NtCurrentTeb()->Peb->LdrData->InInitializationOrderModuleList; for (entry = mark->Flink; entry != mark; entry = entry->Flink) { mod = CONTAINING_RECORD(entry, LDR_MODULE, InInitializationOrderModuleList); if ( !(mod->Flags & LDR_PROCESS_ATTACHED) ) continue; if ( mod->Flags & LDR_NO_DLL_CALLS ) continue; MODULE_InitDLL( CONTAINING_RECORD(mod, WINE_MODREF, ldr), DLL_THREAD_ATTACH, lpReserved ); } done: RtlLeaveCriticalSection( &loader_section ); return status; } /****************************************************************** * LdrDisableThreadCalloutsForDll (NTDLL.@) * */ NTSTATUS WINAPI LdrDisableThreadCalloutsForDll(HMODULE hModule) { WINE_MODREF *wm; NTSTATUS ret = STATUS_SUCCESS; RtlEnterCriticalSection( &loader_section ); wm = get_modref( hModule ); if (!wm || wm->ldr.TlsIndex != -1) ret = STATUS_DLL_NOT_FOUND; else wm->ldr.Flags |= LDR_NO_DLL_CALLS; RtlLeaveCriticalSection( &loader_section ); return ret; } /****************************************************************** * LdrFindEntryForAddress (NTDLL.@) * * The loader_section must be locked while calling this function */ NTSTATUS WINAPI LdrFindEntryForAddress(const void* addr, PLDR_MODULE* pmod) { PLIST_ENTRY mark, entry; PLDR_MODULE mod; mark = &NtCurrentTeb()->Peb->LdrData->InMemoryOrderModuleList; for (entry = mark->Flink; entry != mark; entry = entry->Flink) { mod = CONTAINING_RECORD(entry, LDR_MODULE, InMemoryOrderModuleList); if ((const void *)mod->BaseAddress <= addr && (char *)addr < (char*)mod->BaseAddress + mod->SizeOfImage) { *pmod = mod; return STATUS_SUCCESS; } if ((const void *)mod->BaseAddress > addr) break; } return STATUS_NO_MORE_ENTRIES; } /********************************************************************** * MODULE_FindModule * * Find a (loaded) win32 module depending on path * LPCSTR path: [in] pathname of module/library to be found * * The loader_section must be locked while calling this function * RETURNS * the module handle if found * 0 if not */ WINE_MODREF *MODULE_FindModule(LPCSTR path) { WINE_MODREF *wm; PLIST_ENTRY mark, entry; PLDR_MODULE mod; 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" ); if ((wm = cached_modref) != NULL) { if ( !FILE_strcasecmp( dllname, wm->modname ) ) return wm; if ( !FILE_strcasecmp( dllname, wm->filename ) ) return wm; if ( !FILE_strcasecmp( dllname, wm->short_modname ) ) return wm; if ( !FILE_strcasecmp( dllname, wm->short_filename ) ) return wm; } mark = &NtCurrentTeb()->Peb->LdrData->InLoadOrderModuleList; for (entry = mark->Flink; entry != mark; entry = entry->Flink) { mod = CONTAINING_RECORD(entry, LDR_MODULE, InLoadOrderModuleList); wm = CONTAINING_RECORD(mod, WINE_MODREF, ldr); 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; } if (entry == mark) wm = NULL; cached_modref = wm; return wm; } /****************************************************************** * LdrLockLoaderLock (NTDLL.@) * * Note: flags are not implemented. * Flag 0x01 is used to raise exceptions on errors. * Flag 0x02 is used to avoid waiting on the section (does RtlTryEnterCriticalSection instead). */ NTSTATUS WINAPI LdrLockLoaderLock( ULONG flags, ULONG *result, ULONG *magic ) { if (flags) FIXME( "flags %lx not supported\n", flags ); if (result) *result = 1; if (!magic) return STATUS_INVALID_PARAMETER_3; RtlEnterCriticalSection( &loader_section ); *magic = GetCurrentThreadId(); return STATUS_SUCCESS; } /****************************************************************** * LdrUnlockLoaderUnlock (NTDLL.@) */ NTSTATUS WINAPI LdrUnlockLoaderLock( ULONG flags, ULONG magic ) { if (magic) { if (magic != GetCurrentThreadId()) return STATUS_INVALID_PARAMETER_2; RtlLeaveCriticalSection( &loader_section ); } return STATUS_SUCCESS; } /****************************************************************** * LdrGetDllHandle (NTDLL.@) * * */ NTSTATUS WINAPI LdrGetDllHandle(ULONG x, ULONG y, PUNICODE_STRING name, HMODULE *base) { WINE_MODREF *wm; STRING str; if (x != 0 || y != 0) FIXME("Unknown behavior, please report\n"); /* FIXME: we should store module name information as unicode */ RtlUnicodeStringToAnsiString( &str, name, TRUE ); wm = MODULE_FindModule( str.Buffer ); RtlFreeAnsiString( &str ); if (!wm) { *base = 0; return STATUS_DLL_NOT_FOUND; } *base = wm->ldr.BaseAddress; TRACE("%lx %lx %s -> %p\n", x, y, debugstr_us(name), *base); return STATUS_SUCCESS; } /****************************************************************** * LdrGetProcedureAddress (NTDLL.@) */ NTSTATUS WINAPI LdrGetProcedureAddress(HMODULE module, PANSI_STRING name, ULONG ord, PVOID *address) { IMAGE_EXPORT_DIRECTORY *exports; DWORD exp_size; NTSTATUS ret = STATUS_PROCEDURE_NOT_FOUND; RtlEnterCriticalSection( &loader_section ); if ((exports = RtlImageDirectoryEntryToData( module, TRUE, IMAGE_DIRECTORY_ENTRY_EXPORT, &exp_size ))) { void *proc = name ? find_named_export( module, exports, exp_size, name->Buffer, -1 ) : find_ordinal_export( module, exports, exp_size, ord - exports->Base ); if (proc) { *address = proc; ret = STATUS_SUCCESS; } } else { /* check if the module itself is invalid to return the proper error */ if (!get_modref( module )) ret = STATUS_DLL_NOT_FOUND; } RtlLeaveCriticalSection( &loader_section ); return ret; } /*********************************************************************** * 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 = RtlAllocateHeap (ntdll_get_process_heap(), 0, length+1); if (result) { strncpy (result, libname, length); result [length] = '\0'; } return result; } /*********************************************************************** * load_dll (internal) * * Load a PE style module according to the load order. * * 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 */ static NTSTATUS load_dll( LPCSTR libname, DWORD flags, 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 */ NTSTATUS nts = STATUS_NO_SUCH_FILE; *pwm = NULL; if ( !libname ) return STATUS_DLL_NOT_FOUND; /* FIXME ? */ filename = RtlAllocateHeap ( ntdll_get_process_heap(), 0, MAX_PATH + 1 ); if ( !filename ) return STATUS_NO_MEMORY; *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))) { nts = STATUS_NO_MEMORY; 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 )) { nts = STATUS_INTERNAL_ERROR; goto error; } } /* Check for already loaded module */ if (!(*pwm = MODULE_FindModule(filename)) && !FILE_contains_path(libname)) { LPSTR fn = RtlAllocateHeap ( ntdll_get_process_heap(), 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 ); RtlFreeHeap( ntdll_get_process_heap(), 0, fn ); } } if (*pwm) { if ((*pwm)->ldr.LoadCount != -1) (*pwm)->ldr.LoadCount++; if (((*pwm)->ldr.Flags & LDR_DONT_RESOLVE_REFS) && !(flags & DONT_RESOLVE_DLL_REFERENCES)) { (*pwm)->ldr.Flags &= ~LDR_DONT_RESOLVE_REFS; PE_fixup_imports( *pwm ); } TRACE("Already loaded module '%s' at %p, count=%d\n", filename, (*pwm)->ldr.BaseAddress, (*pwm)->ldr.LoadCount); if (allocated_libdir) { RtlFreeHeap( ntdll_get_process_heap(), 0, (LPSTR)libdir ); libdir = NULL; } RtlLeaveCriticalSection( &loader_section ); RtlFreeHeap( ntdll_get_process_heap(), 0, filename ); return STATUS_SUCCESS; } MODULE_GetLoadOrder( loadorder, filename, TRUE); for (i = 0; i < LOADORDER_NTYPES; i++) { if (loadorder[i] == LOADORDER_INVALID) break; switch (loadorder[i]) { case LOADORDER_DLL: TRACE("Trying native dll '%s'\n", filename); nts = PE_LoadLibraryExA(filename, flags, pwm); filetype = "native"; break; case LOADORDER_BI: TRACE("Trying built-in '%s'\n", filename); nts = BUILTIN32_LoadLibraryExA(filename, flags, pwm); filetype = "builtin"; break; default: nts = STATUS_INTERNAL_ERROR; break; } if (nts == STATUS_SUCCESS) { /* Initialize DLL just loaded */ TRACE("Loaded module '%s' (%s) at %p\n", filename, filetype, (*pwm)->ldr.BaseAddress); if (!TRACE_ON(module)) TRACE_(loaddll)("Loaded module '%s' : %s\n", filename, filetype); /* Set the ldr.LoadCount here so that an attach failure will */ /* decrement the dependencies through the MODULE_FreeLibrary call. */ (*pwm)->ldr.LoadCount = 1; if (allocated_libdir) { RtlFreeHeap( ntdll_get_process_heap(), 0, (LPSTR)libdir ); libdir = NULL; } RtlLeaveCriticalSection( &loader_section ); RtlFreeHeap( ntdll_get_process_heap(), 0, filename ); return nts; } if (nts != STATUS_NO_SUCH_FILE) { WARN("Loading of %s DLL %s failed (status %lx).\n", filetype, filename, nts); break; } } error: if (allocated_libdir) { RtlFreeHeap( ntdll_get_process_heap(), 0, (LPSTR)libdir ); libdir = NULL; } RtlLeaveCriticalSection( &loader_section ); WARN("Failed to load module '%s'; status=%lx\n", filename, nts); RtlFreeHeap( ntdll_get_process_heap(), 0, filename ); return nts; } /****************************************************************** * LdrLoadDll (NTDLL.@) */ NTSTATUS WINAPI LdrLoadDll(LPCWSTR path_name, DWORD flags, PUNICODE_STRING libname, HMODULE* hModule) { WINE_MODREF *wm; NTSTATUS nts = STATUS_SUCCESS; STRING str; RtlUnicodeStringToAnsiString(&str, libname, TRUE); RtlEnterCriticalSection( &loader_section ); switch (nts = load_dll( str.Buffer, flags, &wm )) { case STATUS_SUCCESS: nts = MODULE_DllProcessAttach( wm, NULL ); if (nts != STATUS_SUCCESS) { WARN("Attach failed for module '%s'.\n", str.Buffer); LdrUnloadDll(wm->ldr.BaseAddress); wm = NULL; } break; case STATUS_NO_SUCH_FILE: nts = STATUS_DLL_NOT_FOUND; break; default: /* keep error code as it is (memory...) */ break; } *hModule = (wm) ? wm->ldr.BaseAddress : NULL; RtlLeaveCriticalSection( &loader_section ); RtlFreeAnsiString(&str); return nts; } /****************************************************************** * LdrQueryProcessModuleInformation * */ NTSTATUS WINAPI LdrQueryProcessModuleInformation(PSYSTEM_MODULE_INFORMATION smi, ULONG buf_size, ULONG* req_size) { SYSTEM_MODULE* sm = &smi->Modules[0]; ULONG size = sizeof(ULONG); NTSTATUS nts = STATUS_SUCCESS; ANSI_STRING str; char* ptr; PLIST_ENTRY mark, entry; PLDR_MODULE mod; smi->ModulesCount = 0; RtlEnterCriticalSection( &loader_section ); mark = &NtCurrentTeb()->Peb->LdrData->InLoadOrderModuleList; for (entry = mark->Flink; entry != mark; entry = entry->Flink) { mod = CONTAINING_RECORD(entry, LDR_MODULE, InLoadOrderModuleList); size += sizeof(*sm); if (size <= buf_size) { sm->Reserved1 = 0; /* FIXME */ sm->Reserved2 = 0; /* FIXME */ sm->ImageBaseAddress = mod->BaseAddress; sm->ImageSize = mod->SizeOfImage; sm->Flags = mod->Flags; sm->Id = 0; /* FIXME */ sm->Rank = 0; /* FIXME */ sm->Unknown = 0; /* FIXME */ str.Length = 0; str.MaximumLength = MAXIMUM_FILENAME_LENGTH; str.Buffer = sm->Name; RtlUnicodeStringToAnsiString(&str, &mod->FullDllName, FALSE); ptr = strrchr(sm->Name, '\\'); sm->NameOffset = (ptr != NULL) ? (ptr - (char*)sm->Name + 1) : 0; smi->ModulesCount++; sm++; } else nts = STATUS_INFO_LENGTH_MISMATCH; } RtlLeaveCriticalSection( &loader_section ); if (req_size) *req_size = size; return nts; } /****************************************************************** * LdrShutdownProcess (NTDLL.@) * */ void WINAPI LdrShutdownProcess(void) { TRACE("()\n"); MODULE_DllProcessDetach( TRUE, (LPVOID)1 ); } /****************************************************************** * LdrShutdownThread (NTDLL.@) * */ void WINAPI LdrShutdownThread(void) { PLIST_ENTRY mark, entry; PLDR_MODULE mod; TRACE("()\n"); /* don't do any detach calls if process is exiting */ if (process_detaching) return; /* FIXME: there is still a race here */ RtlEnterCriticalSection( &loader_section ); mark = &NtCurrentTeb()->Peb->LdrData->InInitializationOrderModuleList; for (entry = mark->Blink; entry != mark; entry = entry->Blink) { mod = CONTAINING_RECORD(entry, LDR_MODULE, InInitializationOrderModuleList); if ( !(mod->Flags & LDR_PROCESS_ATTACHED) ) continue; if ( mod->Flags & LDR_NO_DLL_CALLS ) continue; MODULE_InitDLL( CONTAINING_RECORD(mod, WINE_MODREF, ldr), DLL_THREAD_DETACH, NULL ); } RtlLeaveCriticalSection( &loader_section ); } /*********************************************************************** * MODULE_FlushModrefs * * Remove all unused modrefs and call the internal unloading routines * for the library type. * * The loader_section must be locked while calling this function. */ static void MODULE_FlushModrefs(void) { PLIST_ENTRY mark, entry, prev; PLDR_MODULE mod; WINE_MODREF*wm; mark = &NtCurrentTeb()->Peb->LdrData->InInitializationOrderModuleList; for (entry = mark->Blink; entry != mark; entry = prev) { mod = CONTAINING_RECORD(entry, LDR_MODULE, InInitializationOrderModuleList); wm = CONTAINING_RECORD(mod, WINE_MODREF, ldr); prev = entry->Blink; if (wm->ldr.LoadCount) continue; RemoveEntryList(&wm->ldr.InLoadOrderModuleList); RemoveEntryList(&wm->ldr.InMemoryOrderModuleList); RemoveEntryList(&wm->ldr.InInitializationOrderModuleList); 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 = wm->ldr.BaseAddress; wine_server_call( req ); } SERVER_END_REQ; if (wm->dlhandle) wine_dll_unload( wm->dlhandle ); else NtUnmapViewOfSection( GetCurrentProcess(), wm->ldr.BaseAddress ); if (cached_modref == wm) cached_modref = NULL; RtlFreeHeap( ntdll_get_process_heap(), 0, wm->deps ); RtlFreeHeap( ntdll_get_process_heap(), 0, wm ); } } /*********************************************************************** * MODULE_DecRefCount * * The loader_section must be locked while calling this function. */ static void MODULE_DecRefCount( WINE_MODREF *wm ) { int i; if ( wm->ldr.Flags & LDR_UNLOAD_IN_PROGRESS ) return; if ( wm->ldr.LoadCount <= 0 ) return; --wm->ldr.LoadCount; TRACE("(%s) ldr.LoadCount: %d\n", wm->modname, wm->ldr.LoadCount ); if ( wm->ldr.LoadCount == 0 ) { wm->ldr.Flags |= LDR_UNLOAD_IN_PROGRESS; for ( i = 0; i < wm->nDeps; i++ ) if ( wm->deps[i] ) MODULE_DecRefCount( wm->deps[i] ); wm->ldr.Flags &= ~LDR_UNLOAD_IN_PROGRESS; } } /****************************************************************** * LdrUnloadDll (NTDLL.@) * * */ NTSTATUS WINAPI LdrUnloadDll( HMODULE hModule ) { NTSTATUS retv = STATUS_SUCCESS; TRACE("(%p)\n", hModule); 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) { WINE_MODREF *wm; free_lib_count++; if ((wm = get_modref( hModule )) != NULL) { 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"); } else retv = STATUS_DLL_NOT_FOUND; free_lib_count--; } RtlLeaveCriticalSection( &loader_section ); return retv; } /*********************************************************************** * RtlImageNtHeader (NTDLL.@) */ PIMAGE_NT_HEADERS WINAPI RtlImageNtHeader(HMODULE hModule) { IMAGE_NT_HEADERS *ret; __TRY { IMAGE_DOS_HEADER *dos = (IMAGE_DOS_HEADER *)hModule; ret = NULL; if (dos->e_magic == IMAGE_DOS_SIGNATURE) { ret = (IMAGE_NT_HEADERS *)((char *)dos + dos->e_lfanew); if (ret->Signature != IMAGE_NT_SIGNATURE) ret = NULL; } } __EXCEPT(page_fault) { return NULL; } __ENDTRY return ret; } /*********************************************************************** * RtlImageDirectoryEntryToData (NTDLL.@) */ PVOID WINAPI RtlImageDirectoryEntryToData( HMODULE module, BOOL image, WORD dir, ULONG *size ) { const IMAGE_NT_HEADERS *nt; DWORD addr; if ((ULONG_PTR)module & 1) /* mapped as data file */ { module = (HMODULE)((ULONG_PTR)module & ~1); image = FALSE; } if (!(nt = RtlImageNtHeader( module ))) return NULL; if (dir >= nt->OptionalHeader.NumberOfRvaAndSizes) return NULL; if (!(addr = nt->OptionalHeader.DataDirectory[dir].VirtualAddress)) return NULL; *size = nt->OptionalHeader.DataDirectory[dir].Size; if (image || addr < nt->OptionalHeader.SizeOfHeaders) return (char *)module + addr; /* not mapped as image, need to find the section containing the virtual address */ return RtlImageRvaToVa( nt, module, addr, NULL ); } /*********************************************************************** * RtlImageRvaToSection (NTDLL.@) */ PIMAGE_SECTION_HEADER WINAPI RtlImageRvaToSection( const IMAGE_NT_HEADERS *nt, HMODULE module, DWORD rva ) { int i; IMAGE_SECTION_HEADER *sec = (IMAGE_SECTION_HEADER*)((char*)&nt->OptionalHeader + nt->FileHeader.SizeOfOptionalHeader); for (i = 0; i < nt->FileHeader.NumberOfSections; i++, sec++) { if ((sec->VirtualAddress <= rva) && (sec->VirtualAddress + sec->SizeOfRawData > rva)) return sec; } return NULL; } /*********************************************************************** * RtlImageRvaToVa (NTDLL.@) */ PVOID WINAPI RtlImageRvaToVa( const IMAGE_NT_HEADERS *nt, HMODULE module, DWORD rva, IMAGE_SECTION_HEADER **section ) { IMAGE_SECTION_HEADER *sec; if (section && *section) /* try this section first */ { sec = *section; if ((sec->VirtualAddress <= rva) && (sec->VirtualAddress + sec->SizeOfRawData > rva)) goto found; } if (!(sec = RtlImageRvaToSection( nt, module, rva ))) return NULL; found: if (section) *section = sec; return (char *)module + sec->PointerToRawData + (rva - sec->VirtualAddress); }