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Release 0.9.39.
[wine/gsoc-2012-control.git] / dlls / ntdll / loader.c
blob77e5308b3c71536fa76d08a7747fdca1b3430c3b
1 /*
2 * Loader functions
3 *
4 * Copyright 1995, 2003 Alexandre Julliard
5 * Copyright 2002 Dmitry Timoshkov for CodeWeavers
6 *
7 * This library is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
11 *
12 * This library is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
16 *
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with this library; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
20 */
21
22 #include "config.h"
23 #include "wine/port.h"
24
25 #include <assert.h>
26 #include <stdarg.h>
27
28 #define NONAMELESSUNION
29 #define NONAMELESSSTRUCT
30
31 #include "ntstatus.h"
32 #define WIN32_NO_STATUS
33 #include "windef.h"
34 #include "winnt.h"
35 #include "winternl.h"
36
37 #include "wine/exception.h"
38 #include "wine/library.h"
39 #include "wine/unicode.h"
40 #include "wine/debug.h"
41 #include "wine/server.h"
42 #include "ntdll_misc.h"
43 #include "ddk/wdm.h"
44
45 WINE_DEFAULT_DEBUG_CHANNEL(module);
46 WINE_DECLARE_DEBUG_CHANNEL(relay);
47 WINE_DECLARE_DEBUG_CHANNEL(snoop);
48 WINE_DECLARE_DEBUG_CHANNEL(loaddll);
49 WINE_DECLARE_DEBUG_CHANNEL(imports);
50
51 typedef DWORD (CALLBACK *DLLENTRYPROC)(HMODULE,DWORD,LPVOID);
52
53 static int process_detaching = 0; /* set on process detach to avoid deadlocks with thread detach */
54 static int free_lib_count; /* recursion depth of LdrUnloadDll calls */
55
56 static const char * const reason_names[] =
57 {
58 "PROCESS_DETACH",
59 "PROCESS_ATTACH",
60 "THREAD_ATTACH",
61 "THREAD_DETACH",
62 NULL, NULL, NULL, NULL,
63 "WINE_PREATTACH"
64 };
65
66 static const WCHAR dllW[] = {'.','d','l','l',0};
67
68 /* internal representation of 32bit modules. per process. */
69 typedef struct _wine_modref
70 {
71 LDR_MODULE ldr;
72 int nDeps;
73 struct _wine_modref **deps;
74 } WINE_MODREF;
75
76 /* info about the current builtin dll load */
77 /* used to keep track of things across the register_dll constructor call */
78 struct builtin_load_info
79 {
80 const WCHAR *load_path;
81 const WCHAR *filename;
82 NTSTATUS status;
83 WINE_MODREF *wm;
84 };
85
86 static struct builtin_load_info default_load_info;
87 static struct builtin_load_info *builtin_load_info = &default_load_info;
88
89 static HANDLE main_exe_file;
90 static UINT tls_module_count; /* number of modules with TLS directory */
91 static UINT tls_total_size; /* total size of TLS storage */
92 static const IMAGE_TLS_DIRECTORY **tls_dirs; /* array of TLS directories */
93
94 UNICODE_STRING system_dir = { 0, 0, NULL }; /* system directory */
95
96 static RTL_CRITICAL_SECTION loader_section;
97 static RTL_CRITICAL_SECTION_DEBUG critsect_debug =
98 {
99 0, 0, &loader_section,
100 { &critsect_debug.ProcessLocksList, &critsect_debug.ProcessLocksList },
101 0, 0, { (DWORD_PTR)(__FILE__ ": loader_section") }
102 };
103 static RTL_CRITICAL_SECTION loader_section = { &critsect_debug, -1, 0, 0, 0, 0 };
104
105 static WINE_MODREF *cached_modref;
106 static WINE_MODREF *current_modref;
107 static WINE_MODREF *last_failed_modref;
108
109 static NTSTATUS load_dll( LPCWSTR load_path, LPCWSTR libname, DWORD flags, WINE_MODREF** pwm );
110 static FARPROC find_named_export( HMODULE module, const IMAGE_EXPORT_DIRECTORY *exports,
111 DWORD exp_size, const char *name, int hint );
112
113 /* convert PE image VirtualAddress to Real Address */
114 static inline void *get_rva( HMODULE module, DWORD va )
115 {
116 return (void *)((char *)module + va);
117 }
118
119 /* check whether the file name contains a path */
120 static inline int contains_path( LPCWSTR name )
121 {
122 return ((*name && (name[1] == ':')) || strchrW(name, '/') || strchrW(name, '\\'));
123 }
124
125 /* convert from straight ASCII to Unicode without depending on the current codepage */
126 static inline void ascii_to_unicode( WCHAR *dst, const char *src, size_t len )
127 {
128 while (len--) *dst++ = (unsigned char)*src++;
129 }
130
131
132 /*************************************************************************
133 * call_dll_entry_point
134 *
135 * Some brain-damaged dlls (ir32_32.dll for instance) modify ebx in
136 * their entry point, so we need a small asm wrapper.
137 */
138 #ifdef __i386__
139 extern BOOL call_dll_entry_point( DLLENTRYPROC proc, void *module, UINT reason, void *reserved );
140 __ASM_GLOBAL_FUNC(call_dll_entry_point,
141 "pushl %ebp\n\t"
142 "movl %esp,%ebp\n\t"
143 "pushl %ebx\n\t"
144 "subl $8,%esp\n\t"
145 "pushl 20(%ebp)\n\t"
146 "pushl 16(%ebp)\n\t"
147 "pushl 12(%ebp)\n\t"
148 "movl 8(%ebp),%eax\n\t"
149 "call *%eax\n\t"
150 "leal -4(%ebp),%esp\n\t"
151 "popl %ebx\n\t"
152 "popl %ebp\n\t"
153 "ret" )
154 #else /* __i386__ */
155 static inline BOOL call_dll_entry_point( DLLENTRYPROC proc, void *module,
156 UINT reason, void *reserved )
157 {
158 return proc( module, reason, reserved );
159 }
160 #endif /* __i386__ */
161
162
163 #ifdef __i386__
164 /*************************************************************************
165 * stub_entry_point
166 *
167 * Entry point for stub functions.
168 */
169 static void stub_entry_point( const char *dll, const char *name, ... )
170 {
171 EXCEPTION_RECORD rec;
172
173 rec.ExceptionCode = EXCEPTION_WINE_STUB;
174 rec.ExceptionFlags = EH_NONCONTINUABLE;
175 rec.ExceptionRecord = NULL;
176 #ifdef __GNUC__
177 rec.ExceptionAddress = __builtin_return_address(0);
178 #else
179 rec.ExceptionAddress = *((void **)&dll - 1);
180 #endif
181 rec.NumberParameters = 2;
182 rec.ExceptionInformation[0] = (ULONG_PTR)dll;
183 rec.ExceptionInformation[1] = (ULONG_PTR)name;
184 for (;;) RtlRaiseException( &rec );
185 }
186
187
188 #include "pshpack1.h"
189 struct stub
190 {
191 BYTE popl_eax; /* popl %eax */
192 BYTE pushl1; /* pushl $name */
193 const char *name;
194 BYTE pushl2; /* pushl $dll */
195 const char *dll;
196 BYTE pushl_eax; /* pushl %eax */
197 BYTE jmp; /* jmp stub_entry_point */
198 DWORD entry;
199 };
200 #include "poppack.h"
201
202 /*************************************************************************
203 * allocate_stub
204 *
205 * Allocate a stub entry point.
206 */
207 static ULONG_PTR allocate_stub( const char *dll, const char *name )
208 {
209 #define MAX_SIZE 65536
210 static struct stub *stubs;
211 static unsigned int nb_stubs;
212 struct stub *stub;
213
214 if (nb_stubs >= MAX_SIZE / sizeof(*stub)) return 0xdeadbeef;
215
216 if (!stubs)
217 {
218 SIZE_T size = MAX_SIZE;
219 if (NtAllocateVirtualMemory( NtCurrentProcess(), (void **)&stubs, 0, &size,
220 MEM_COMMIT, PAGE_EXECUTE_WRITECOPY ) != STATUS_SUCCESS)
221 return 0xdeadbeef;
222 }
223 stub = &stubs[nb_stubs++];
224 stub->popl_eax = 0x58; /* popl %eax */
225 stub->pushl1 = 0x68; /* pushl $name */
226 stub->name = name;
227 stub->pushl2 = 0x68; /* pushl $dll */
228 stub->dll = dll;
229 stub->pushl_eax = 0x50; /* pushl %eax */
230 stub->jmp = 0xe9; /* jmp stub_entry_point */
231 stub->entry = (BYTE *)stub_entry_point - (BYTE *)(&stub->entry + 1);
232 return (ULONG_PTR)stub;
233 }
234
235 #else /* __i386__ */
236 static inline ULONG_PTR allocate_stub( const char *dll, const char *name ) { return 0xdeadbeef; }
237 #endif /* __i386__ */
238
239
240 /*************************************************************************
241 * get_modref
242 *
243 * Looks for the referenced HMODULE in the current process
244 * The loader_section must be locked while calling this function.
245 */
246 static WINE_MODREF *get_modref( HMODULE hmod )
247 {
248 PLIST_ENTRY mark, entry;
249 PLDR_MODULE mod;
250
251 if (cached_modref && cached_modref->ldr.BaseAddress == hmod) return cached_modref;
252
253 mark = &NtCurrentTeb()->Peb->LdrData->InMemoryOrderModuleList;
254 for (entry = mark->Flink; entry != mark; entry = entry->Flink)
255 {
256 mod = CONTAINING_RECORD(entry, LDR_MODULE, InMemoryOrderModuleList);
257 if (mod->BaseAddress == hmod)
258 return cached_modref = CONTAINING_RECORD(mod, WINE_MODREF, ldr);
259 if (mod->BaseAddress > (void*)hmod) break;
260 }
261 return NULL;
262 }
263
264
265 /**********************************************************************
266 * find_basename_module
267 *
268 * Find a module from its base name.
269 * The loader_section must be locked while calling this function
270 */
271 static WINE_MODREF *find_basename_module( LPCWSTR name )
272 {
273 PLIST_ENTRY mark, entry;
274
275 if (cached_modref && !strcmpiW( name, cached_modref->ldr.BaseDllName.Buffer ))
276 return cached_modref;
277
278 mark = &NtCurrentTeb()->Peb->LdrData->InLoadOrderModuleList;
279 for (entry = mark->Flink; entry != mark; entry = entry->Flink)
280 {
281 LDR_MODULE *mod = CONTAINING_RECORD(entry, LDR_MODULE, InLoadOrderModuleList);
282 if (!strcmpiW( name, mod->BaseDllName.Buffer ))
283 {
284 cached_modref = CONTAINING_RECORD(mod, WINE_MODREF, ldr);
285 return cached_modref;
286 }
287 }
288 return NULL;
289 }
290
291
292 /**********************************************************************
293 * find_fullname_module
294 *
295 * Find a module from its full path name.
296 * The loader_section must be locked while calling this function
297 */
298 static WINE_MODREF *find_fullname_module( LPCWSTR name )
299 {
300 PLIST_ENTRY mark, entry;
301
302 if (cached_modref && !strcmpiW( name, cached_modref->ldr.FullDllName.Buffer ))
303 return cached_modref;
304
305 mark = &NtCurrentTeb()->Peb->LdrData->InLoadOrderModuleList;
306 for (entry = mark->Flink; entry != mark; entry = entry->Flink)
307 {
308 LDR_MODULE *mod = CONTAINING_RECORD(entry, LDR_MODULE, InLoadOrderModuleList);
309 if (!strcmpiW( name, mod->FullDllName.Buffer ))
310 {
311 cached_modref = CONTAINING_RECORD(mod, WINE_MODREF, ldr);
312 return cached_modref;
313 }
314 }
315 return NULL;
316 }
317
318
319 /*************************************************************************
320 * find_forwarded_export
321 *
322 * Find the final function pointer for a forwarded function.
323 * The loader_section must be locked while calling this function.
324 */
325 static FARPROC find_forwarded_export( HMODULE module, const char *forward )
326 {
327 const IMAGE_EXPORT_DIRECTORY *exports;
328 DWORD exp_size;
329 WINE_MODREF *wm;
330 WCHAR mod_name[32];
331 const char *end = strrchr(forward, '.');
332 FARPROC proc = NULL;
333
334 if (!end) return NULL;
335 if ((end - forward) * sizeof(WCHAR) >= sizeof(mod_name)) return NULL;
336 ascii_to_unicode( mod_name, forward, end - forward );
337 mod_name[end - forward] = 0;
338 if (!strchrW( mod_name, '.' ))
339 {
340 if ((end - forward) * sizeof(WCHAR) >= sizeof(mod_name) - sizeof(dllW)) return NULL;
341 memcpy( mod_name + (end - forward), dllW, sizeof(dllW) );
342 }
343
344 if (!(wm = find_basename_module( mod_name )))
345 {
346 ERR("module not found for forward '%s' used by %s\n",
347 forward, debugstr_w(get_modref(module)->ldr.FullDllName.Buffer) );
348 return NULL;
349 }
350 if ((exports = RtlImageDirectoryEntryToData( wm->ldr.BaseAddress, TRUE,
351 IMAGE_DIRECTORY_ENTRY_EXPORT, &exp_size )))
352 proc = find_named_export( wm->ldr.BaseAddress, exports, exp_size, end + 1, -1 );
353
354 if (!proc)
355 {
356 ERR("function not found for forward '%s' used by %s."
357 " If you are using builtin %s, try using the native one instead.\n",
358 forward, debugstr_w(get_modref(module)->ldr.FullDllName.Buffer),
359 debugstr_w(get_modref(module)->ldr.BaseDllName.Buffer) );
360 }
361 return proc;
362 }
363
364
365 /*************************************************************************
366 * find_ordinal_export
367 *
368 * Find an exported function by ordinal.
369 * The exports base must have been subtracted from the ordinal already.
370 * The loader_section must be locked while calling this function.
371 */
372 static FARPROC find_ordinal_export( HMODULE module, const IMAGE_EXPORT_DIRECTORY *exports,
373 DWORD exp_size, DWORD ordinal )
374 {
375 FARPROC proc;
376 const DWORD *functions = get_rva( module, exports->AddressOfFunctions );
377
378 if (ordinal >= exports->NumberOfFunctions)
379 {
380 TRACE(" ordinal %d out of range!\n", ordinal + exports->Base );
381 return NULL;
382 }
383 if (!functions[ordinal]) return NULL;
384
385 proc = get_rva( module, functions[ordinal] );
386
387 /* if the address falls into the export dir, it's a forward */
388 if (((const char *)proc >= (const char *)exports) &&
389 ((const char *)proc < (const char *)exports + exp_size))
390 return find_forwarded_export( module, (const char *)proc );
391
392 if (TRACE_ON(snoop))
393 {
394 const WCHAR *user = current_modref ? current_modref->ldr.BaseDllName.Buffer : NULL;
395 proc = SNOOP_GetProcAddress( module, exports, exp_size, proc, ordinal, user );
396 }
397 if (TRACE_ON(relay))
398 {
399 const WCHAR *user = current_modref ? current_modref->ldr.BaseDllName.Buffer : NULL;
400 proc = RELAY_GetProcAddress( module, exports, exp_size, proc, ordinal, user );
401 }
402 return proc;
403 }
404
405
406 /*************************************************************************
407 * find_named_export
408 *
409 * Find an exported function by name.
410 * The loader_section must be locked while calling this function.
411 */
412 static FARPROC find_named_export( HMODULE module, const IMAGE_EXPORT_DIRECTORY *exports,
413 DWORD exp_size, const char *name, int hint )
414 {
415 const WORD *ordinals = get_rva( module, exports->AddressOfNameOrdinals );
416 const DWORD *names = get_rva( module, exports->AddressOfNames );
417 int min = 0, max = exports->NumberOfNames - 1;
418
419 /* first check the hint */
420 if (hint >= 0 && hint <= max)
421 {
422 char *ename = get_rva( module, names[hint] );
423 if (!strcmp( ename, name ))
424 return find_ordinal_export( module, exports, exp_size, ordinals[hint] );
425 }
426
427 /* then do a binary search */
428 while (min <= max)
429 {
430 int res, pos = (min + max) / 2;
431 char *ename = get_rva( module, names[pos] );
432 if (!(res = strcmp( ename, name )))
433 return find_ordinal_export( module, exports, exp_size, ordinals[pos] );
434 if (res > 0) max = pos - 1;
435 else min = pos + 1;
436 }
437 return NULL;
438
439 }
440
441
442 /*************************************************************************
443 * import_dll
444 *
445 * Import the dll specified by the given import descriptor.
446 * The loader_section must be locked while calling this function.
447 */
448 static WINE_MODREF *import_dll( HMODULE module, const IMAGE_IMPORT_DESCRIPTOR *descr, LPCWSTR load_path )
449 {
450 NTSTATUS status;
451 WINE_MODREF *wmImp;
452 HMODULE imp_mod;
453 const IMAGE_EXPORT_DIRECTORY *exports;
454 DWORD exp_size;
455 const IMAGE_THUNK_DATA *import_list;
456 IMAGE_THUNK_DATA *thunk_list;
457 WCHAR buffer[32];
458 const char *name = get_rva( module, descr->Name );
459 DWORD len = strlen(name);
460 PVOID protect_base;
461 SIZE_T protect_size = 0;
462 DWORD protect_old;
463
464 thunk_list = get_rva( module, (DWORD)descr->FirstThunk );
465 if (descr->u.OriginalFirstThunk)
466 import_list = get_rva( module, (DWORD)descr->u.OriginalFirstThunk );
467 else
468 import_list = thunk_list;
469
470 while (len && name[len-1] == ' ') len--; /* remove trailing spaces */
471
472 if (len * sizeof(WCHAR) < sizeof(buffer))
473 {
474 ascii_to_unicode( buffer, name, len );
475 buffer[len] = 0;
476 status = load_dll( load_path, buffer, 0, &wmImp );
477 }
478 else /* need to allocate a larger buffer */
479 {
480 WCHAR *ptr = RtlAllocateHeap( GetProcessHeap(), 0, (len + 1) * sizeof(WCHAR) );
481 if (!ptr) return NULL;
482 ascii_to_unicode( ptr, name, len );
483 ptr[len] = 0;
484 status = load_dll( load_path, ptr, 0, &wmImp );
485 RtlFreeHeap( GetProcessHeap(), 0, ptr );
486 }
487
488 if (status)
489 {
490 if (status == STATUS_DLL_NOT_FOUND)
491 ERR("Library %s (which is needed by %s) not found\n",
492 name, debugstr_w(current_modref->ldr.FullDllName.Buffer));
493 else
494 ERR("Loading library %s (which is needed by %s) failed (error %x).\n",
495 name, debugstr_w(current_modref->ldr.FullDllName.Buffer), status);
496 return NULL;
497 }
498
499 /* unprotect the import address table since it can be located in
500 * readonly section */
501 while (import_list[protect_size].u1.Ordinal) protect_size++;
502 protect_base = thunk_list;
503 protect_size *= sizeof(*thunk_list);
504 NtProtectVirtualMemory( NtCurrentProcess(), &protect_base,
505 &protect_size, PAGE_WRITECOPY, &protect_old );
506
507 imp_mod = wmImp->ldr.BaseAddress;
508 exports = RtlImageDirectoryEntryToData( imp_mod, TRUE, IMAGE_DIRECTORY_ENTRY_EXPORT, &exp_size );
509
510 if (!exports)
511 {
512 /* set all imported function to deadbeef */
513 while (import_list->u1.Ordinal)
514 {
515 if (IMAGE_SNAP_BY_ORDINAL(import_list->u1.Ordinal))
516 {
517 int ordinal = IMAGE_ORDINAL(import_list->u1.Ordinal);
518 WARN("No implementation for %s.%d", name, ordinal );
519 thunk_list->u1.Function = allocate_stub( name, IntToPtr(ordinal) );
520 }
521 else
522 {
523 IMAGE_IMPORT_BY_NAME *pe_name = get_rva( module, (DWORD)import_list->u1.AddressOfData );
524 WARN("No implementation for %s.%s", name, pe_name->Name );
525 thunk_list->u1.Function = allocate_stub( name, (const char*)pe_name->Name );
526 }
527 WARN(" imported from %s, allocating stub %p\n",
528 debugstr_w(current_modref->ldr.FullDllName.Buffer),
529 (void *)thunk_list->u1.Function );
530 import_list++;
531 thunk_list++;
532 }
533 goto done;
534 }
535
536 while (import_list->u1.Ordinal)
537 {
538 if (IMAGE_SNAP_BY_ORDINAL(import_list->u1.Ordinal))
539 {
540 int ordinal = IMAGE_ORDINAL(import_list->u1.Ordinal);
541
542 thunk_list->u1.Function = (ULONG_PTR)find_ordinal_export( imp_mod, exports, exp_size,
543 ordinal - exports->Base );
544 if (!thunk_list->u1.Function)
545 {
546 thunk_list->u1.Function = allocate_stub( name, IntToPtr(ordinal) );
547 WARN("No implementation for %s.%d imported from %s, setting to %p\n",
548 name, ordinal, debugstr_w(current_modref->ldr.FullDllName.Buffer),
549 (void *)thunk_list->u1.Function );
550 }
551 TRACE_(imports)("--- Ordinal %s.%d = %p\n", name, ordinal, (void *)thunk_list->u1.Function );
552 }
553 else /* import by name */
554 {
555 IMAGE_IMPORT_BY_NAME *pe_name;
556 pe_name = get_rva( module, (DWORD)import_list->u1.AddressOfData );
557 thunk_list->u1.Function = (ULONG_PTR)find_named_export( imp_mod, exports, exp_size,
558 (const char*)pe_name->Name, pe_name->Hint );
559 if (!thunk_list->u1.Function)
560 {
561 thunk_list->u1.Function = allocate_stub( name, (const char*)pe_name->Name );
562 WARN("No implementation for %s.%s imported from %s, setting to %p\n",
563 name, pe_name->Name, debugstr_w(current_modref->ldr.FullDllName.Buffer),
564 (void *)thunk_list->u1.Function );
565 }
566 TRACE_(imports)("--- %s %s.%d = %p\n",
567 pe_name->Name, name, pe_name->Hint, (void *)thunk_list->u1.Function);
568 }
569 import_list++;
570 thunk_list++;
571 }
572
573 done:
574 /* restore old protection of the import address table */
575 NtProtectVirtualMemory( NtCurrentProcess(), &protect_base, &protect_size, protect_old, NULL );
576 return wmImp;
577 }
578
579
580 /****************************************************************
581 * fixup_imports
582 *
583 * Fixup all imports of a given module.
584 * The loader_section must be locked while calling this function.
585 */
586 static NTSTATUS fixup_imports( WINE_MODREF *wm, LPCWSTR load_path )
587 {
588 int i, nb_imports;
589 const IMAGE_IMPORT_DESCRIPTOR *imports;
590 WINE_MODREF *prev;
591 DWORD size;
592 NTSTATUS status;
593
594 if (!(wm->ldr.Flags & LDR_DONT_RESOLVE_REFS)) return STATUS_SUCCESS; /* already done */
595 wm->ldr.Flags &= ~LDR_DONT_RESOLVE_REFS;
596
597 if (!(imports = RtlImageDirectoryEntryToData( wm->ldr.BaseAddress, TRUE,
598 IMAGE_DIRECTORY_ENTRY_IMPORT, &size )))
599 return STATUS_SUCCESS;
600
601 nb_imports = 0;
602 while (imports[nb_imports].Name && imports[nb_imports].FirstThunk) nb_imports++;
603
604 if (!nb_imports) return STATUS_SUCCESS; /* no imports */
605
606 /* Allocate module dependency list */
607 wm->nDeps = nb_imports;
608 wm->deps = RtlAllocateHeap( GetProcessHeap(), 0, nb_imports*sizeof(WINE_MODREF *) );
609
610 /* load the imported modules. They are automatically
611 * added to the modref list of the process.
612 */
613 prev = current_modref;
614 current_modref = wm;
615 status = STATUS_SUCCESS;
616 for (i = 0; i < nb_imports; i++)
617 {
618 if (!(wm->deps[i] = import_dll( wm->ldr.BaseAddress, &imports[i], load_path )))
619 status = STATUS_DLL_NOT_FOUND;
620 }
621 current_modref = prev;
622 return status;
623 }
624
625
626 /*************************************************************************
627 * alloc_module
628 *
629 * Allocate a WINE_MODREF structure and add it to the process list
630 * The loader_section must be locked while calling this function.
631 */
632 static WINE_MODREF *alloc_module( HMODULE hModule, LPCWSTR filename )
633 {
634 WINE_MODREF *wm;
635 const WCHAR *p;
636 const IMAGE_NT_HEADERS *nt = RtlImageNtHeader(hModule);
637 PLIST_ENTRY entry, mark;
638
639 if (!(wm = RtlAllocateHeap( GetProcessHeap(), 0, sizeof(*wm) ))) return NULL;
640
641 wm->nDeps = 0;
642 wm->deps = NULL;
643
644 wm->ldr.BaseAddress = hModule;
645 wm->ldr.EntryPoint = NULL;
646 wm->ldr.SizeOfImage = nt->OptionalHeader.SizeOfImage;
647 wm->ldr.Flags = LDR_DONT_RESOLVE_REFS;
648 wm->ldr.LoadCount = 1;
649 wm->ldr.TlsIndex = -1;
650 wm->ldr.SectionHandle = NULL;
651 wm->ldr.CheckSum = 0;
652 wm->ldr.TimeDateStamp = 0;
653
654 RtlCreateUnicodeString( &wm->ldr.FullDllName, filename );
655 if ((p = strrchrW( wm->ldr.FullDllName.Buffer, '\\' ))) p++;
656 else p = wm->ldr.FullDllName.Buffer;
657 RtlInitUnicodeString( &wm->ldr.BaseDllName, p );
658
659 if (nt->FileHeader.Characteristics & IMAGE_FILE_DLL)
660 {
661 wm->ldr.Flags |= LDR_IMAGE_IS_DLL;
662 if (nt->OptionalHeader.AddressOfEntryPoint)
663 wm->ldr.EntryPoint = (char *)hModule + nt->OptionalHeader.AddressOfEntryPoint;
664 }
665
666 InsertTailList(&NtCurrentTeb()->Peb->LdrData->InLoadOrderModuleList,
667 &wm->ldr.InLoadOrderModuleList);
668
669 /* insert module in MemoryList, sorted in increasing base addresses */
670 mark = &NtCurrentTeb()->Peb->LdrData->InMemoryOrderModuleList;
671 for (entry = mark->Flink; entry != mark; entry = entry->Flink)
672 {
673 if (CONTAINING_RECORD(entry, LDR_MODULE, InMemoryOrderModuleList)->BaseAddress > wm->ldr.BaseAddress)
674 break;
675 }
676 entry->Blink->Flink = &wm->ldr.InMemoryOrderModuleList;
677 wm->ldr.InMemoryOrderModuleList.Blink = entry->Blink;
678 wm->ldr.InMemoryOrderModuleList.Flink = entry;
679 entry->Blink = &wm->ldr.InMemoryOrderModuleList;
680
681 /* wait until init is called for inserting into this list */
682 wm->ldr.InInitializationOrderModuleList.Flink = NULL;
683 wm->ldr.InInitializationOrderModuleList.Blink = NULL;
684
685 if (!(nt->OptionalHeader.DllCharacteristics & IMAGE_DLLCHARACTERISTICS_NX_COMPAT))
686 {
687 WARN( "disabling no-exec because of %s\n", debugstr_w(wm->ldr.BaseDllName.Buffer) );
688 VIRTUAL_SetForceExec( TRUE );
689 }
690 return wm;
691 }
692
693
694 /*************************************************************************
695 * alloc_process_tls
696 *
697 * Allocate the process-wide structure for module TLS storage.
698 */
699 static NTSTATUS alloc_process_tls(void)
700 {
701 PLIST_ENTRY mark, entry;
702 PLDR_MODULE mod;
703 const IMAGE_TLS_DIRECTORY *dir;
704 ULONG size, i;
705
706 mark = &NtCurrentTeb()->Peb->LdrData->InMemoryOrderModuleList;
707 for (entry = mark->Flink; entry != mark; entry = entry->Flink)
708 {
709 mod = CONTAINING_RECORD(entry, LDR_MODULE, InMemoryOrderModuleList);
710 if (!(dir = RtlImageDirectoryEntryToData( mod->BaseAddress, TRUE,
711 IMAGE_DIRECTORY_ENTRY_TLS, &size )))
712 continue;
713 size = (dir->EndAddressOfRawData - dir->StartAddressOfRawData) + dir->SizeOfZeroFill;
714 if (!size) continue;
715 tls_total_size += size;
716 tls_module_count++;
717 }
718 if (!tls_module_count) return STATUS_SUCCESS;
719
720 TRACE( "count %u size %u\n", tls_module_count, tls_total_size );
721
722 tls_dirs = RtlAllocateHeap( GetProcessHeap(), 0, tls_module_count * sizeof(*tls_dirs) );
723 if (!tls_dirs) return STATUS_NO_MEMORY;
724
725 for (i = 0, entry = mark->Flink; entry != mark; entry = entry->Flink)
726 {
727 mod = CONTAINING_RECORD(entry, LDR_MODULE, InMemoryOrderModuleList);
728 if (!(dir = RtlImageDirectoryEntryToData( mod->BaseAddress, TRUE,
729 IMAGE_DIRECTORY_ENTRY_TLS, &size )))
730 continue;
731 tls_dirs[i] = dir;
732 *(DWORD *)dir->AddressOfIndex = i;
733 mod->TlsIndex = i;
734 mod->LoadCount = -1; /* can't unload it */
735 i++;
736 }
737 return STATUS_SUCCESS;
738 }
739
740
741 /*************************************************************************
742 * alloc_thread_tls
743 *
744 * Allocate the per-thread structure for module TLS storage.
745 */
746 static NTSTATUS alloc_thread_tls(void)
747 {
748 void **pointers;
749 char *data;
750 UINT i;
751
752 if (!tls_module_count) return STATUS_SUCCESS;
753
754 if (!(pointers = RtlAllocateHeap( GetProcessHeap(), 0,
755 tls_module_count * sizeof(*pointers) )))
756 return STATUS_NO_MEMORY;
757
758 if (!(data = RtlAllocateHeap( GetProcessHeap(), 0, tls_total_size )))
759 {
760 RtlFreeHeap( GetProcessHeap(), 0, pointers );
761 return STATUS_NO_MEMORY;
762 }
763
764 for (i = 0; i < tls_module_count; i++)
765 {
766 const IMAGE_TLS_DIRECTORY *dir = tls_dirs[i];
767 ULONG size = dir->EndAddressOfRawData - dir->StartAddressOfRawData;
768
769 TRACE( "thread %04x idx %d: %d/%d bytes from %p to %p\n",
770 GetCurrentThreadId(), i, size, dir->SizeOfZeroFill,
771 (void *)dir->StartAddressOfRawData, data );
772
773 pointers[i] = data;
774 memcpy( data, (void *)dir->StartAddressOfRawData, size );
775 data += size;
776 memset( data, 0, dir->SizeOfZeroFill );
777 data += dir->SizeOfZeroFill;
778 }
779 NtCurrentTeb()->ThreadLocalStoragePointer = pointers;
780 return STATUS_SUCCESS;
781 }
782
783
784 /*************************************************************************
785 * call_tls_callbacks
786 */
787 static void call_tls_callbacks( HMODULE module, UINT reason )
788 {
789 const IMAGE_TLS_DIRECTORY *dir;
790 const PIMAGE_TLS_CALLBACK *callback;
791 ULONG dirsize;
792
793 dir = RtlImageDirectoryEntryToData( module, TRUE, IMAGE_DIRECTORY_ENTRY_TLS, &dirsize );
794 if (!dir || !dir->AddressOfCallBacks) return;
795
796 for (callback = (const PIMAGE_TLS_CALLBACK *)dir->AddressOfCallBacks; *callback; callback++)
797 {
798 if (TRACE_ON(relay))
799 DPRINTF("%04x:Call TLS callback (proc=%p,module=%p,reason=%s,reserved=0)\n",
800 GetCurrentThreadId(), *callback, module, reason_names[reason] );
801 __TRY
802 {
803 (*callback)( module, reason, NULL );
804 }
805 __EXCEPT(NULL)
806 {
807 if (TRACE_ON(relay))
808 DPRINTF("%04x:exception in TLS callback (proc=%p,module=%p,reason=%s,reserved=0)\n",
809 GetCurrentThreadId(), callback, module, reason_names[reason] );
810 return;
811 }
812 __ENDTRY
813 if (TRACE_ON(relay))
814 DPRINTF("%04x:Ret TLS callback (proc=%p,module=%p,reason=%s,reserved=0)\n",
815 GetCurrentThreadId(), *callback, module, reason_names[reason] );
816 }
817 }
818
819
820 /*************************************************************************
821 * MODULE_InitDLL
822 */
823 static BOOL MODULE_InitDLL( WINE_MODREF *wm, UINT reason, LPVOID lpReserved )
824 {
825 WCHAR mod_name[32];
826 BOOL retv = TRUE;
827 DLLENTRYPROC entry = wm->ldr.EntryPoint;
828 void *module = wm->ldr.BaseAddress;
829
830 /* Skip calls for modules loaded with special load flags */
831
832 if (wm->ldr.Flags & LDR_DONT_RESOLVE_REFS) return TRUE;
833 if (wm->ldr.TlsIndex != -1) call_tls_callbacks( wm->ldr.BaseAddress, reason );
834 if (!entry) return TRUE;
835
836 if (TRACE_ON(relay))
837 {
838 size_t len = min( wm->ldr.BaseDllName.Length, sizeof(mod_name)-sizeof(WCHAR) );
839 memcpy( mod_name, wm->ldr.BaseDllName.Buffer, len );
840 mod_name[len / sizeof(WCHAR)] = 0;
841 DPRINTF("%04x:Call PE DLL (proc=%p,module=%p %s,reason=%s,res=%p)\n",
842 GetCurrentThreadId(), entry, module, debugstr_w(mod_name),
843 reason_names[reason], lpReserved );
844 }
845 else TRACE("(%p %s,%s,%p) - CALL\n", module, debugstr_w(wm->ldr.BaseDllName.Buffer),
846 reason_names[reason], lpReserved );
847
848 retv = call_dll_entry_point( entry, module, reason, lpReserved );
849
850 /* The state of the module list may have changed due to the call
851 to the dll. We cannot assume that this module has not been
852 deleted. */
853 if (TRACE_ON(relay))
854 DPRINTF("%04x:Ret PE DLL (proc=%p,module=%p %s,reason=%s,res=%p) retval=%x\n",
855 GetCurrentThreadId(), entry, module, debugstr_w(mod_name),
856 reason_names[reason], lpReserved, retv );
857 else TRACE("(%p,%s,%p) - RETURN %d\n", module, reason_names[reason], lpReserved, retv );
858
859 return retv;
860 }
861
862
863 /*************************************************************************
864 * process_attach
865 *
866 * Send the process attach notification to all DLLs the given module
867 * depends on (recursively). This is somewhat complicated due to the fact that
868 *
869 * - we have to respect the module dependencies, i.e. modules implicitly
870 * referenced by another module have to be initialized before the module
871 * itself can be initialized
872 *
873 * - the initialization routine of a DLL can itself call LoadLibrary,
874 * thereby introducing a whole new set of dependencies (even involving
875 * the 'old' modules) at any time during the whole process
876 *
877 * (Note that this routine can be recursively entered not only directly
878 * from itself, but also via LoadLibrary from one of the called initialization
879 * routines.)
880 *
881 * Furthermore, we need to rearrange the main WINE_MODREF list to allow
882 * the process *detach* notifications to be sent in the correct order.
883 * This must not only take into account module dependencies, but also
884 * 'hidden' dependencies created by modules calling LoadLibrary in their
885 * attach notification routine.
886 *
887 * The strategy is rather simple: we move a WINE_MODREF to the head of the
888 * list after the attach notification has returned. This implies that the
889 * detach notifications are called in the reverse of the sequence the attach
890 * notifications *returned*.
891 *
892 * The loader_section must be locked while calling this function.
893 */
894 static NTSTATUS process_attach( WINE_MODREF *wm, LPVOID lpReserved )
895 {
896 NTSTATUS status = STATUS_SUCCESS;
897 int i;
898
899 if (process_detaching) return status;
900
901 /* prevent infinite recursion in case of cyclical dependencies */
902 if ( ( wm->ldr.Flags & LDR_LOAD_IN_PROGRESS )
903 || ( wm->ldr.Flags & LDR_PROCESS_ATTACHED ) )
904 return status;
905
906 TRACE("(%s,%p) - START\n", debugstr_w(wm->ldr.BaseDllName.Buffer), lpReserved );
907
908 /* Tag current MODREF to prevent recursive loop */
909 wm->ldr.Flags |= LDR_LOAD_IN_PROGRESS;
910
911 /* Recursively attach all DLLs this one depends on */
912 for ( i = 0; i < wm->nDeps; i++ )
913 {
914 if (!wm->deps[i]) continue;
915 if ((status = process_attach( wm->deps[i], lpReserved )) != STATUS_SUCCESS) break;
916 }
917
918 /* Call DLL entry point */
919 if (status == STATUS_SUCCESS)
920 {
921 WINE_MODREF *prev = current_modref;
922 current_modref = wm;
923 if (MODULE_InitDLL( wm, DLL_PROCESS_ATTACH, lpReserved ))
924 {
925 wm->ldr.Flags |= LDR_PROCESS_ATTACHED;
926 }
927 else
928 {
929 /* point to the name so LdrInitializeThunk can print it */
930 last_failed_modref = wm;
931 WARN("Initialization of %s failed\n", debugstr_w(wm->ldr.BaseDllName.Buffer));
932 status = STATUS_DLL_INIT_FAILED;
933 }
934 current_modref = prev;
935 }
936
937 if (!wm->ldr.InInitializationOrderModuleList.Flink)
938 InsertTailList(&NtCurrentTeb()->Peb->LdrData->InInitializationOrderModuleList,
939 &wm->ldr.InInitializationOrderModuleList);
940
941 /* Remove recursion flag */
942 wm->ldr.Flags &= ~LDR_LOAD_IN_PROGRESS;
943
944 TRACE("(%s,%p) - END\n", debugstr_w(wm->ldr.BaseDllName.Buffer), lpReserved );
945 return status;
946 }
947
948
949 /**********************************************************************
950 * attach_implicitly_loaded_dlls
951 *
952 * Attach to the (builtin) dlls that have been implicitly loaded because
953 * of a dependency at the Unix level, but not imported at the Win32 level.
954 */
955 static void attach_implicitly_loaded_dlls( LPVOID reserved )
956 {
957 for (;;)
958 {
959 PLIST_ENTRY mark, entry;
960
961 mark = &NtCurrentTeb()->Peb->LdrData->InLoadOrderModuleList;
962 for (entry = mark->Flink; entry != mark; entry = entry->Flink)
963 {
964 LDR_MODULE *mod = CONTAINING_RECORD(entry, LDR_MODULE, InLoadOrderModuleList);
965
966 if (mod->Flags & (LDR_LOAD_IN_PROGRESS | LDR_PROCESS_ATTACHED)) continue;
967 TRACE( "found implicitly loaded %s, attaching to it\n",
968 debugstr_w(mod->BaseDllName.Buffer));
969 mod->LoadCount = -1; /* we can't unload it anyway */
970 process_attach( CONTAINING_RECORD(mod, WINE_MODREF, ldr), reserved );
971 break; /* restart the search from the start */
972 }
973 if (entry == mark) break; /* nothing found */
974 }
975 }
976
977
978 /*************************************************************************
979 * process_detach
980 *
981 * Send DLL process detach notifications. See the comment about calling
982 * sequence at process_attach. Unless the bForceDetach flag
983 * is set, only DLLs with zero refcount are notified.
984 */
985 static void process_detach( BOOL bForceDetach, LPVOID lpReserved )
986 {
987 PLIST_ENTRY mark, entry;
988 PLDR_MODULE mod;
989
990 RtlEnterCriticalSection( &loader_section );
991 if (bForceDetach) process_detaching = 1;
992 mark = &NtCurrentTeb()->Peb->LdrData->InInitializationOrderModuleList;
993 do
994 {
995 for (entry = mark->Blink; entry != mark; entry = entry->Blink)
996 {
997 mod = CONTAINING_RECORD(entry, LDR_MODULE,
998 InInitializationOrderModuleList);
999 /* Check whether to detach this DLL */
1000 if ( !(mod->Flags & LDR_PROCESS_ATTACHED) )
1001 continue;
1002 if ( mod->LoadCount && !bForceDetach )
1003 continue;
1004
1005 /* Call detach notification */
1006 mod->Flags &= ~LDR_PROCESS_ATTACHED;
1007 MODULE_InitDLL( CONTAINING_RECORD(mod, WINE_MODREF, ldr),
1008 DLL_PROCESS_DETACH, lpReserved );
1009
1010 /* Restart at head of WINE_MODREF list, as entries might have
1011 been added and/or removed while performing the call ... */
1012 break;
1013 }
1014 } while (entry != mark);
1015
1016 RtlLeaveCriticalSection( &loader_section );
1017 }
1018
1019 /*************************************************************************
1020 * MODULE_DllThreadAttach
1021 *
1022 * Send DLL thread attach notifications. These are sent in the
1023 * reverse sequence of process detach notification.
1024 *
1025 */
1026 NTSTATUS MODULE_DllThreadAttach( LPVOID lpReserved )
1027 {
1028 PLIST_ENTRY mark, entry;
1029 PLDR_MODULE mod;
1030 NTSTATUS status;
1031
1032 /* don't do any attach calls if process is exiting */
1033 if (process_detaching) return STATUS_SUCCESS;
1034 /* FIXME: there is still a race here */
1035
1036 RtlEnterCriticalSection( &loader_section );
1037
1038 if ((status = alloc_thread_tls()) != STATUS_SUCCESS) goto done;
1039
1040 mark = &NtCurrentTeb()->Peb->LdrData->InInitializationOrderModuleList;
1041 for (entry = mark->Flink; entry != mark; entry = entry->Flink)
1042 {
1043 mod = CONTAINING_RECORD(entry, LDR_MODULE,
1044 InInitializationOrderModuleList);
1045 if ( !(mod->Flags & LDR_PROCESS_ATTACHED) )
1046 continue;
1047 if ( mod->Flags & LDR_NO_DLL_CALLS )
1048 continue;
1049
1050 MODULE_InitDLL( CONTAINING_RECORD(mod, WINE_MODREF, ldr),
1051 DLL_THREAD_ATTACH, lpReserved );
1052 }
1053
1054 done:
1055 RtlLeaveCriticalSection( &loader_section );
1056 return status;
1057 }
1058
1059 /******************************************************************
1060 * LdrDisableThreadCalloutsForDll (NTDLL.@)
1061 *
1062 */
1063 NTSTATUS WINAPI LdrDisableThreadCalloutsForDll(HMODULE hModule)
1064 {
1065 WINE_MODREF *wm;
1066 NTSTATUS ret = STATUS_SUCCESS;
1067
1068 RtlEnterCriticalSection( &loader_section );
1069
1070 wm = get_modref( hModule );
1071 if (!wm || wm->ldr.TlsIndex != -1)
1072 ret = STATUS_DLL_NOT_FOUND;
1073 else
1074 wm->ldr.Flags |= LDR_NO_DLL_CALLS;
1075
1076 RtlLeaveCriticalSection( &loader_section );
1077
1078 return ret;
1079 }
1080
1081 /******************************************************************
1082 * LdrFindEntryForAddress (NTDLL.@)
1083 *
1084 * The loader_section must be locked while calling this function
1085 */
1086 NTSTATUS WINAPI LdrFindEntryForAddress(const void* addr, PLDR_MODULE* pmod)
1087 {
1088 PLIST_ENTRY mark, entry;
1089 PLDR_MODULE mod;
1090
1091 mark = &NtCurrentTeb()->Peb->LdrData->InMemoryOrderModuleList;
1092 for (entry = mark->Flink; entry != mark; entry = entry->Flink)
1093 {
1094 mod = CONTAINING_RECORD(entry, LDR_MODULE, InMemoryOrderModuleList);
1095 if ((const void *)mod->BaseAddress <= addr &&
1096 (const char *)addr < (char*)mod->BaseAddress + mod->SizeOfImage)
1097 {
1098 *pmod = mod;
1099 return STATUS_SUCCESS;
1100 }
1101 if ((const void *)mod->BaseAddress > addr) break;
1102 }
1103 return STATUS_NO_MORE_ENTRIES;
1104 }
1105
1106 /******************************************************************
1107 * LdrLockLoaderLock (NTDLL.@)
1108 *
1109 * Note: flags are not implemented.
1110 * Flag 0x01 is used to raise exceptions on errors.
1111 * Flag 0x02 is used to avoid waiting on the section (does RtlTryEnterCriticalSection instead).
1112 */
1113 NTSTATUS WINAPI LdrLockLoaderLock( ULONG flags, ULONG *result, ULONG *magic )
1114 {
1115 if (flags) FIXME( "flags %x not supported\n", flags );
1116
1117 if (result) *result = 1;
1118 if (!magic) return STATUS_INVALID_PARAMETER_3;
1119 RtlEnterCriticalSection( &loader_section );
1120 *magic = GetCurrentThreadId();
1121 return STATUS_SUCCESS;
1122 }
1123
1124
1125 /******************************************************************
1126 * LdrUnlockLoaderUnlock (NTDLL.@)
1127 */
1128 NTSTATUS WINAPI LdrUnlockLoaderLock( ULONG flags, ULONG magic )
1129 {
1130 if (magic)
1131 {
1132 if (magic != GetCurrentThreadId()) return STATUS_INVALID_PARAMETER_2;
1133 RtlLeaveCriticalSection( &loader_section );
1134 }
1135 return STATUS_SUCCESS;
1136 }
1137
1138
1139 /******************************************************************
1140 * LdrGetProcedureAddress (NTDLL.@)
1141 */
1142 NTSTATUS WINAPI LdrGetProcedureAddress(HMODULE module, const ANSI_STRING *name,
1143 ULONG ord, PVOID *address)
1144 {
1145 IMAGE_EXPORT_DIRECTORY *exports;
1146 DWORD exp_size;
1147 NTSTATUS ret = STATUS_PROCEDURE_NOT_FOUND;
1148
1149 RtlEnterCriticalSection( &loader_section );
1150
1151 /* check if the module itself is invalid to return the proper error */
1152 if (!get_modref( module )) ret = STATUS_DLL_NOT_FOUND;
1153 else if ((exports = RtlImageDirectoryEntryToData( module, TRUE,
1154 IMAGE_DIRECTORY_ENTRY_EXPORT, &exp_size )))
1155 {
1156 void *proc = name ? find_named_export( module, exports, exp_size, name->Buffer, -1 )
1157 : find_ordinal_export( module, exports, exp_size, ord - exports->Base );
1158 if (proc)
1159 {
1160 *address = proc;
1161 ret = STATUS_SUCCESS;
1162 }
1163 }
1164
1165 RtlLeaveCriticalSection( &loader_section );
1166 return ret;
1167 }
1168
1169
1170 /***********************************************************************
1171 * is_fake_dll
1172 *
1173 * Check if a loaded native dll is a Wine fake dll.
1174 */
1175 static BOOL is_fake_dll( const void *base )
1176 {
1177 static const char fakedll_signature[] = "Wine placeholder DLL";
1178 const IMAGE_DOS_HEADER *dos = base;
1179
1180 if (dos->e_lfanew >= sizeof(*dos) + sizeof(fakedll_signature) &&
1181 !memcmp( dos + 1, fakedll_signature, sizeof(fakedll_signature) )) return TRUE;
1182 return FALSE;
1183 }
1184
1185
1186 /***********************************************************************
1187 * get_builtin_fullname
1188 *
1189 * Build the full pathname for a builtin dll.
1190 */
1191 static WCHAR *get_builtin_fullname( const WCHAR *path, const char *filename )
1192 {
1193 static const WCHAR soW[] = {'.','s','o',0};
1194 WCHAR *p, *fullname;
1195 size_t i, len = strlen(filename);
1196
1197 /* check if path can correspond to the dll we have */
1198 if (path && (p = strrchrW( path, '\\' )))
1199 {
1200 p++;
1201 for (i = 0; i < len; i++)
1202 if (tolowerW(p[i]) != tolowerW( (WCHAR)filename[i]) ) break;
1203 if (i == len && (!p[len] || !strcmpiW( p + len, soW )))
1204 {
1205 /* the filename matches, use path as the full path */
1206 len += p - path;
1207 if ((fullname = RtlAllocateHeap( GetProcessHeap(), 0, (len + 1) * sizeof(WCHAR) )))
1208 {
1209 memcpy( fullname, path, len * sizeof(WCHAR) );
1210 fullname[len] = 0;
1211 }
1212 return fullname;
1213 }
1214 }
1215
1216 if ((fullname = RtlAllocateHeap( GetProcessHeap(), 0,
1217 system_dir.MaximumLength + (len + 1) * sizeof(WCHAR) )))
1218 {
1219 memcpy( fullname, system_dir.Buffer, system_dir.Length );
1220 p = fullname + system_dir.Length / sizeof(WCHAR);
1221 if (p > fullname && p[-1] != '\\') *p++ = '\\';
1222 ascii_to_unicode( p, filename, len + 1 );
1223 }
1224 return fullname;
1225 }
1226
1227
1228 /***********************************************************************
1229 * load_builtin_callback
1230 *
1231 * Load a library in memory; callback function for wine_dll_register
1232 */
1233 static void load_builtin_callback( void *module, const char *filename )
1234 {
1235 static const WCHAR emptyW[1];
1236 void *addr;
1237 IMAGE_NT_HEADERS *nt;
1238 WINE_MODREF *wm;
1239 WCHAR *fullname;
1240 const WCHAR *load_path;
1241 SIZE_T size;
1242
1243 if (!module)
1244 {
1245 ERR("could not map image for %s\n", filename ? filename : "main exe" );
1246 return;
1247 }
1248 if (!(nt = RtlImageNtHeader( module )))
1249 {
1250 ERR( "bad module for %s\n", filename ? filename : "main exe" );
1251 builtin_load_info->status = STATUS_INVALID_IMAGE_FORMAT;
1252 return;
1253 }
1254 addr = module;
1255 size = nt->OptionalHeader.SizeOfImage;
1256 NtAllocateVirtualMemory( NtCurrentProcess(), &addr, 0, &size,
1257 MEM_SYSTEM | MEM_IMAGE, PAGE_EXECUTE_WRITECOPY );
1258 /* create the MODREF */
1259
1260 if (!(fullname = get_builtin_fullname( builtin_load_info->filename, filename )))
1261 {
1262 ERR( "can't load %s\n", filename );
1263 builtin_load_info->status = STATUS_NO_MEMORY;
1264 return;
1265 }
1266
1267 wm = alloc_module( module, fullname );
1268 RtlFreeHeap( GetProcessHeap(), 0, fullname );
1269 if (!wm)
1270 {
1271 ERR( "can't load %s\n", filename );
1272 builtin_load_info->status = STATUS_NO_MEMORY;
1273 return;
1274 }
1275 wm->ldr.Flags |= LDR_WINE_INTERNAL;
1276
1277 if (!(nt->FileHeader.Characteristics & IMAGE_FILE_DLL) &&
1278 !NtCurrentTeb()->Peb->ImageBaseAddress) /* if we already have an executable, ignore this one */
1279 {
1280 NtCurrentTeb()->Peb->ImageBaseAddress = module;
1281 }
1282 else
1283 {
1284 /* fixup imports */
1285
1286 load_path = builtin_load_info->load_path;
1287 if (!load_path) load_path = NtCurrentTeb()->Peb->ProcessParameters->DllPath.Buffer;
1288 if (!load_path) load_path = emptyW;
1289 if (fixup_imports( wm, load_path ) != STATUS_SUCCESS)
1290 {
1291 /* the module has only be inserted in the load & memory order lists */
1292 RemoveEntryList(&wm->ldr.InLoadOrderModuleList);
1293 RemoveEntryList(&wm->ldr.InMemoryOrderModuleList);
1294 /* FIXME: free the modref */
1295 builtin_load_info->status = STATUS_DLL_NOT_FOUND;
1296 return;
1297 }
1298 }
1299
1300 builtin_load_info->wm = wm;
1301 TRACE( "loaded %s %p %p\n", filename, wm, module );
1302
1303 /* send the DLL load event */
1304
1305 SERVER_START_REQ( load_dll )
1306 {
1307 req->handle = 0;
1308 req->base = module;
1309 req->size = nt->OptionalHeader.SizeOfImage;
1310 req->dbg_offset = nt->FileHeader.PointerToSymbolTable;
1311 req->dbg_size = nt->FileHeader.NumberOfSymbols;
1312 req->name = &wm->ldr.FullDllName.Buffer;
1313 wine_server_add_data( req, wm->ldr.FullDllName.Buffer, wm->ldr.FullDllName.Length );
1314 wine_server_call( req );
1315 }
1316 SERVER_END_REQ;
1317
1318 /* setup relay debugging entry points */
1319 if (TRACE_ON(relay)) RELAY_SetupDLL( module );
1320 }
1321
1322
1323 /******************************************************************************
1324 * load_native_dll (internal)
1325 */
1326 static NTSTATUS load_native_dll( LPCWSTR load_path, LPCWSTR name, HANDLE file,
1327 DWORD flags, WINE_MODREF** pwm )
1328 {
1329 void *module;
1330 HANDLE mapping;
1331 OBJECT_ATTRIBUTES attr;
1332 LARGE_INTEGER size;
1333 IMAGE_NT_HEADERS *nt;
1334 SIZE_T len = 0;
1335 WINE_MODREF *wm;
1336 NTSTATUS status;
1337
1338 TRACE("Trying native dll %s\n", debugstr_w(name));
1339
1340 attr.Length = sizeof(attr);
1341 attr.RootDirectory = 0;
1342 attr.ObjectName = NULL;
1343 attr.Attributes = 0;
1344 attr.SecurityDescriptor = NULL;
1345 attr.SecurityQualityOfService = NULL;
1346 size.QuadPart = 0;
1347
1348 status = NtCreateSection( &mapping, STANDARD_RIGHTS_REQUIRED | SECTION_QUERY | SECTION_MAP_READ,
1349 &attr, &size, 0, SEC_IMAGE, file );
1350 if (status != STATUS_SUCCESS) return status;
1351
1352 module = NULL;
1353 status = NtMapViewOfSection( mapping, NtCurrentProcess(),
1354 &module, 0, 0, &size, &len, ViewShare, 0, PAGE_READONLY );
1355 NtClose( mapping );
1356 if (status != STATUS_SUCCESS) return status;
1357
1358 if (is_fake_dll( module ))
1359 {
1360 TRACE( "%s is a fake dll, not loading it\n", debugstr_w(name) );
1361 NtUnmapViewOfSection( NtCurrentProcess(), module );
1362 return STATUS_DLL_NOT_FOUND;
1363 }
1364
1365 /* create the MODREF */
1366
1367 if (!(wm = alloc_module( module, name ))) return STATUS_NO_MEMORY;
1368
1369 /* fixup imports */
1370
1371 if (!(flags & DONT_RESOLVE_DLL_REFERENCES))
1372 {
1373 if ((status = fixup_imports( wm, load_path )) != STATUS_SUCCESS)
1374 {
1375 /* the module has only be inserted in the load & memory order lists */
1376 RemoveEntryList(&wm->ldr.InLoadOrderModuleList);
1377 RemoveEntryList(&wm->ldr.InMemoryOrderModuleList);
1378
1379 /* FIXME: there are several more dangling references
1380 * left. Including dlls loaded by this dll before the
1381 * failed one. Unrolling is rather difficult with the
1382 * current structure and we can leave them lying
1383 * around with no problems, so we don't care.
1384 * As these might reference our wm, we don't free it.
1385 */
1386 return status;
1387 }
1388 }
1389
1390 /* send DLL load event */
1391
1392 nt = RtlImageNtHeader( module );
1393
1394 SERVER_START_REQ( load_dll )
1395 {
1396 req->handle = file;
1397 req->base = module;
1398 req->size = nt->OptionalHeader.SizeOfImage;
1399 req->dbg_offset = nt->FileHeader.PointerToSymbolTable;
1400 req->dbg_size = nt->FileHeader.NumberOfSymbols;
1401 req->name = &wm->ldr.FullDllName.Buffer;
1402 wine_server_add_data( req, wm->ldr.FullDllName.Buffer, wm->ldr.FullDllName.Length );
1403 wine_server_call( req );
1404 }
1405 SERVER_END_REQ;
1406
1407 if (TRACE_ON(snoop)) SNOOP_SetupDLL( module );
1408
1409 TRACE_(loaddll)( " Loaded module %s : native\n", debugstr_w(wm->ldr.FullDllName.Buffer) );
1410
1411 wm->ldr.LoadCount = 1;
1412 *pwm = wm;
1413 return STATUS_SUCCESS;
1414 }
1415
1416
1417 /***********************************************************************
1418 * load_builtin_dll
1419 */
1420 static NTSTATUS load_builtin_dll( LPCWSTR load_path, LPCWSTR path, HANDLE file,
1421 DWORD flags, WINE_MODREF** pwm )
1422 {
1423 char error[256], dllname[MAX_PATH];
1424 const WCHAR *name, *p;
1425 DWORD len, i;
1426 void *handle = NULL;
1427 struct builtin_load_info info, *prev_info;
1428
1429 /* Fix the name in case we have a full path and extension */
1430 name = path;
1431 if ((p = strrchrW( name, '\\' ))) name = p + 1;
1432 if ((p = strrchrW( name, '/' ))) name = p + 1;
1433
1434 /* load_library will modify info.status. Note also that load_library can be
1435 * called several times, if the .so file we're loading has dependencies.
1436 * info.status will gather all the errors we may get while loading all these
1437 * libraries
1438 */
1439 info.load_path = load_path;
1440 info.filename = NULL;
1441 info.status = STATUS_SUCCESS;
1442 info.wm = NULL;
1443
1444 if (file) /* we have a real file, try to load it */
1445 {
1446 UNICODE_STRING nt_name;
1447 ANSI_STRING unix_name;
1448
1449 TRACE("Trying built-in %s\n", debugstr_w(path));
1450
1451 if (!RtlDosPathNameToNtPathName_U( path, &nt_name, NULL, NULL ))
1452 return STATUS_DLL_NOT_FOUND;
1453
1454 if (wine_nt_to_unix_file_name( &nt_name, &unix_name, FILE_OPEN, FALSE ))
1455 {
1456 RtlFreeUnicodeString( &nt_name );
1457 return STATUS_DLL_NOT_FOUND;
1458 }
1459 prev_info = builtin_load_info;
1460 info.filename = nt_name.Buffer + 4; /* skip \??\ */
1461 builtin_load_info = &info;
1462 handle = wine_dlopen( unix_name.Buffer, RTLD_NOW, error, sizeof(error) );
1463 builtin_load_info = prev_info;
1464 RtlFreeUnicodeString( &nt_name );
1465 RtlFreeHeap( GetProcessHeap(), 0, unix_name.Buffer );
1466 if (!handle)
1467 {
1468 WARN( "failed to load .so lib for builtin %s: %s\n", debugstr_w(path), error );
1469 return STATUS_INVALID_IMAGE_FORMAT;
1470 }
1471 }
1472 else
1473 {
1474 int file_exists;
1475
1476 TRACE("Trying built-in %s\n", debugstr_w(name));
1477
1478 /* we don't want to depend on the current codepage here */
1479 len = strlenW( name ) + 1;
1480 if (len >= sizeof(dllname)) return STATUS_NAME_TOO_LONG;
1481 for (i = 0; i < len; i++)
1482 {
1483 if (name[i] > 127) return STATUS_DLL_NOT_FOUND;
1484 dllname[i] = (char)name[i];
1485 if (dllname[i] >= 'A' && dllname[i] <= 'Z') dllname[i] += 'a' - 'A';
1486 }
1487
1488 prev_info = builtin_load_info;
1489 builtin_load_info = &info;
1490 handle = wine_dll_load( dllname, error, sizeof(error), &file_exists );
1491 builtin_load_info = prev_info;
1492 if (!handle)
1493 {
1494 if (!file_exists)
1495 {
1496 /* The file does not exist -> WARN() */
1497 WARN("cannot open .so lib for builtin %s: %s\n", debugstr_w(name), error);
1498 return STATUS_DLL_NOT_FOUND;
1499 }
1500 /* ERR() for all other errors (missing functions, ...) */
1501 ERR("failed to load .so lib for builtin %s: %s\n", debugstr_w(name), error );
1502 return STATUS_PROCEDURE_NOT_FOUND;
1503 }
1504 }
1505
1506 if (info.status != STATUS_SUCCESS)
1507 {
1508 wine_dll_unload( handle );
1509 return info.status;
1510 }
1511
1512 if (!info.wm)
1513 {
1514 PLIST_ENTRY mark, entry;
1515
1516 /* The constructor wasn't called, this means the .so is already
1517 * loaded under a different name. Try to find the wm for it. */
1518
1519 mark = &NtCurrentTeb()->Peb->LdrData->InLoadOrderModuleList;
1520 for (entry = mark->Flink; entry != mark; entry = entry->Flink)
1521 {
1522 LDR_MODULE *mod = CONTAINING_RECORD(entry, LDR_MODULE, InLoadOrderModuleList);
1523 if (mod->Flags & LDR_WINE_INTERNAL && mod->SectionHandle == handle)
1524 {
1525 info.wm = CONTAINING_RECORD(mod, WINE_MODREF, ldr);
1526 TRACE( "Found already loaded module %s for builtin %s\n",
1527 debugstr_w(info.wm->ldr.FullDllName.Buffer), debugstr_w(path) );
1528 break;
1529 }
1530 }
1531 wine_dll_unload( handle ); /* release the libdl refcount */
1532 if (!info.wm) return STATUS_INVALID_IMAGE_FORMAT;
1533 if (info.wm->ldr.LoadCount != -1) info.wm->ldr.LoadCount++;
1534 }
1535 else
1536 {
1537 TRACE_(loaddll)( "Loaded module %s : builtin\n", debugstr_w(info.wm->ldr.FullDllName.Buffer) );
1538 info.wm->ldr.LoadCount = 1;
1539 info.wm->ldr.SectionHandle = handle;
1540 }
1541
1542 *pwm = info.wm;
1543 return STATUS_SUCCESS;
1544 }
1545
1546
1547 /***********************************************************************
1548 * find_dll_file
1549 *
1550 * Find the file (or already loaded module) for a given dll name.
1551 */
1552 static NTSTATUS find_dll_file( const WCHAR *load_path, const WCHAR *libname,
1553 WCHAR *filename, ULONG *size, WINE_MODREF **pwm, HANDLE *handle )
1554 {
1555 OBJECT_ATTRIBUTES attr;
1556 IO_STATUS_BLOCK io;
1557 UNICODE_STRING nt_name;
1558 WCHAR *file_part, *ext, *dllname;
1559 ULONG len;
1560
1561 /* first append .dll if needed */
1562
1563 dllname = NULL;
1564 if (!(ext = strrchrW( libname, '.')) || strchrW( ext, '/' ) || strchrW( ext, '\\'))
1565 {
1566 if (!(dllname = RtlAllocateHeap( GetProcessHeap(), 0,
1567 (strlenW(libname) * sizeof(WCHAR)) + sizeof(dllW) )))
1568 return STATUS_NO_MEMORY;
1569 strcpyW( dllname, libname );
1570 strcatW( dllname, dllW );
1571 libname = dllname;
1572 }
1573
1574 nt_name.Buffer = NULL;
1575
1576 if (!contains_path( libname ))
1577 {
1578 if ((*pwm = find_basename_module( libname )) != NULL) goto found;
1579 }
1580
1581 if (RtlDetermineDosPathNameType_U( libname ) == RELATIVE_PATH)
1582 {
1583 /* we need to search for it */
1584 len = RtlDosSearchPath_U( load_path, libname, NULL, *size, filename, &file_part );
1585 if (len)
1586 {
1587 if (len >= *size) goto overflow;
1588 if ((*pwm = find_fullname_module( filename )) || !handle) goto found;
1589
1590 if (!RtlDosPathNameToNtPathName_U( filename, &nt_name, NULL, NULL ))
1591 {
1592 RtlFreeHeap( GetProcessHeap(), 0, dllname );
1593 return STATUS_NO_MEMORY;
1594 }
1595 attr.Length = sizeof(attr);
1596 attr.RootDirectory = 0;
1597 attr.Attributes = OBJ_CASE_INSENSITIVE;
1598 attr.ObjectName = &nt_name;
1599 attr.SecurityDescriptor = NULL;
1600 attr.SecurityQualityOfService = NULL;
1601 if (NtOpenFile( handle, GENERIC_READ, &attr, &io, FILE_SHARE_READ|FILE_SHARE_DELETE, 0 )) *handle = 0;
1602 goto found;
1603 }
1604
1605 /* not found */
1606
1607 if (!contains_path( libname ))
1608 {
1609 /* if libname doesn't contain a path at all, we simply return the name as is,
1610 * to be loaded as builtin */
1611 len = strlenW(libname) * sizeof(WCHAR);
1612 if (len >= *size) goto overflow;
1613 strcpyW( filename, libname );
1614 goto found;
1615 }
1616 }
1617
1618 /* absolute path name, or relative path name but not found above */
1619
1620 if (!RtlDosPathNameToNtPathName_U( libname, &nt_name, &file_part, NULL ))
1621 {
1622 RtlFreeHeap( GetProcessHeap(), 0, dllname );
1623 return STATUS_NO_MEMORY;
1624 }
1625 len = nt_name.Length - 4*sizeof(WCHAR); /* for \??\ prefix */
1626 if (len >= *size) goto overflow;
1627 memcpy( filename, nt_name.Buffer + 4, len + sizeof(WCHAR) );
1628 if (!(*pwm = find_fullname_module( filename )) && handle)
1629 {
1630 attr.Length = sizeof(attr);
1631 attr.RootDirectory = 0;
1632 attr.Attributes = OBJ_CASE_INSENSITIVE;
1633 attr.ObjectName = &nt_name;
1634 attr.SecurityDescriptor = NULL;
1635 attr.SecurityQualityOfService = NULL;
1636 if (NtOpenFile( handle, GENERIC_READ, &attr, &io, FILE_SHARE_READ|FILE_SHARE_DELETE, 0 )) *handle = 0;
1637 }
1638 found:
1639 RtlFreeUnicodeString( &nt_name );
1640 RtlFreeHeap( GetProcessHeap(), 0, dllname );
1641 return STATUS_SUCCESS;
1642
1643 overflow:
1644 RtlFreeUnicodeString( &nt_name );
1645 RtlFreeHeap( GetProcessHeap(), 0, dllname );
1646 *size = len + sizeof(WCHAR);
1647 return STATUS_BUFFER_TOO_SMALL;
1648 }
1649
1650
1651 /***********************************************************************
1652 * load_dll (internal)
1653 *
1654 * Load a PE style module according to the load order.
1655 * The loader_section must be locked while calling this function.
1656 */
1657 static NTSTATUS load_dll( LPCWSTR load_path, LPCWSTR libname, DWORD flags, WINE_MODREF** pwm )
1658 {
1659 enum loadorder loadorder;
1660 WCHAR buffer[32];
1661 WCHAR *filename;
1662 ULONG size;
1663 WINE_MODREF *main_exe;
1664 HANDLE handle = 0;
1665 NTSTATUS nts;
1666
1667 TRACE( "looking for %s in %s\n", debugstr_w(libname), debugstr_w(load_path) );
1668
1669 filename = buffer;
1670 size = sizeof(buffer);
1671 for (;;)
1672 {
1673 nts = find_dll_file( load_path, libname, filename, &size, pwm, &handle );
1674 if (nts == STATUS_SUCCESS) break;
1675 if (filename != buffer) RtlFreeHeap( GetProcessHeap(), 0, filename );
1676 if (nts != STATUS_BUFFER_TOO_SMALL) return nts;
1677 /* grow the buffer and retry */
1678 if (!(filename = RtlAllocateHeap( GetProcessHeap(), 0, size ))) return STATUS_NO_MEMORY;
1679 }
1680
1681 if (*pwm) /* found already loaded module */
1682 {
1683 if ((*pwm)->ldr.LoadCount != -1) (*pwm)->ldr.LoadCount++;
1684
1685 if (!(flags & DONT_RESOLVE_DLL_REFERENCES)) fixup_imports( *pwm, load_path );
1686
1687 TRACE("Found loaded module %s for %s at %p, count=%d\n",
1688 debugstr_w((*pwm)->ldr.FullDllName.Buffer), debugstr_w(libname),
1689 (*pwm)->ldr.BaseAddress, (*pwm)->ldr.LoadCount);
1690 if (filename != buffer) RtlFreeHeap( GetProcessHeap(), 0, filename );
1691 return STATUS_SUCCESS;
1692 }
1693
1694 main_exe = get_modref( NtCurrentTeb()->Peb->ImageBaseAddress );
1695 loadorder = get_load_order( main_exe ? main_exe->ldr.BaseDllName.Buffer : NULL, filename );
1696
1697 switch(loadorder)
1698 {
1699 case LO_INVALID:
1700 nts = STATUS_NO_MEMORY;
1701 break;
1702 case LO_DISABLED:
1703 nts = STATUS_DLL_NOT_FOUND;
1704 break;
1705 case LO_NATIVE:
1706 case LO_NATIVE_BUILTIN:
1707 if (!handle) nts = STATUS_DLL_NOT_FOUND;
1708 else
1709 {
1710 nts = load_native_dll( load_path, filename, handle, flags, pwm );
1711 if (nts == STATUS_INVALID_FILE_FOR_SECTION)
1712 /* not in PE format, maybe it's a builtin */
1713 nts = load_builtin_dll( load_path, filename, handle, flags, pwm );
1714 }
1715 if (nts == STATUS_DLL_NOT_FOUND && loadorder == LO_NATIVE_BUILTIN)
1716 nts = load_builtin_dll( load_path, filename, 0, flags, pwm );
1717 break;
1718 case LO_BUILTIN:
1719 case LO_BUILTIN_NATIVE:
1720 case LO_DEFAULT: /* default is builtin,native */
1721 nts = load_builtin_dll( load_path, filename, handle, flags, pwm );
1722 if (!handle) break; /* nothing else we can try */
1723 /* file is not a builtin library, try without using the specified file */
1724 if (nts != STATUS_SUCCESS)
1725 nts = load_builtin_dll( load_path, filename, 0, flags, pwm );
1726 if (nts == STATUS_SUCCESS && loadorder == LO_DEFAULT &&
1727 !MODULE_InitDLL( *pwm, DLL_WINE_PREATTACH, NULL ))
1728 {
1729 /* stub-only dll, try native */
1730 TRACE( "%s pre-attach returned FALSE, preferring native\n", debugstr_w(filename) );
1731 LdrUnloadDll( (*pwm)->ldr.BaseAddress );
1732 nts = STATUS_DLL_NOT_FOUND;
1733 }
1734 if (nts == STATUS_DLL_NOT_FOUND && loadorder != LO_BUILTIN)
1735 nts = load_native_dll( load_path, filename, handle, flags, pwm );
1736 break;
1737 }
1738
1739 if (nts == STATUS_SUCCESS)
1740 {
1741 /* Initialize DLL just loaded */
1742 TRACE("Loaded module %s (%s) at %p\n", debugstr_w(filename),
1743 ((*pwm)->ldr.Flags & LDR_WINE_INTERNAL) ? "builtin" : "native",
1744 (*pwm)->ldr.BaseAddress);
1745 if (handle) NtClose( handle );
1746 if (filename != buffer) RtlFreeHeap( GetProcessHeap(), 0, filename );
1747 return nts;
1748 }
1749
1750 WARN("Failed to load module %s; status=%x\n", debugstr_w(libname), nts);
1751 if (handle) NtClose( handle );
1752 if (filename != buffer) RtlFreeHeap( GetProcessHeap(), 0, filename );
1753 return nts;
1754 }
1755
1756 /******************************************************************
1757 * LdrLoadDll (NTDLL.@)
1758 */
1759 NTSTATUS WINAPI LdrLoadDll(LPCWSTR path_name, DWORD flags,
1760 const UNICODE_STRING *libname, HMODULE* hModule)
1761 {
1762 WINE_MODREF *wm;
1763 NTSTATUS nts;
1764
1765 RtlEnterCriticalSection( &loader_section );
1766
1767 if (!path_name) path_name = NtCurrentTeb()->Peb->ProcessParameters->DllPath.Buffer;
1768 nts = load_dll( path_name, libname->Buffer, flags, &wm );
1769
1770 if (nts == STATUS_SUCCESS && !(wm->ldr.Flags & LDR_DONT_RESOLVE_REFS))
1771 {
1772 nts = process_attach( wm, NULL );
1773 if (nts != STATUS_SUCCESS)
1774 {
1775 LdrUnloadDll(wm->ldr.BaseAddress);
1776 wm = NULL;
1777 }
1778 }
1779 *hModule = (wm) ? wm->ldr.BaseAddress : NULL;
1780
1781 RtlLeaveCriticalSection( &loader_section );
1782 return nts;
1783 }
1784
1785
1786 /******************************************************************
1787 * LdrGetDllHandle (NTDLL.@)
1788 */
1789 NTSTATUS WINAPI LdrGetDllHandle( LPCWSTR load_path, ULONG flags, const UNICODE_STRING *name, HMODULE *base )
1790 {
1791 NTSTATUS status;
1792 WCHAR buffer[128];
1793 WCHAR *filename;
1794 ULONG size;
1795 WINE_MODREF *wm;
1796
1797 RtlEnterCriticalSection( &loader_section );
1798
1799 if (!load_path) load_path = NtCurrentTeb()->Peb->ProcessParameters->DllPath.Buffer;
1800
1801 filename = buffer;
1802 size = sizeof(buffer);
1803 for (;;)
1804 {
1805 status = find_dll_file( load_path, name->Buffer, filename, &size, &wm, NULL );
1806 if (filename != buffer) RtlFreeHeap( GetProcessHeap(), 0, filename );
1807 if (status != STATUS_BUFFER_TOO_SMALL) break;
1808 /* grow the buffer and retry */
1809 if (!(filename = RtlAllocateHeap( GetProcessHeap(), 0, size ))) return STATUS_NO_MEMORY;
1810 }
1811
1812 if (status == STATUS_SUCCESS)
1813 {
1814 if (wm) *base = wm->ldr.BaseAddress;
1815 else status = STATUS_DLL_NOT_FOUND;
1816 }
1817
1818 RtlLeaveCriticalSection( &loader_section );
1819 TRACE( "%s -> %p (load path %s)\n", debugstr_us(name), status ? NULL : *base, debugstr_w(load_path) );
1820 return status;
1821 }
1822
1823
1824 /******************************************************************
1825 * LdrAddRefDll (NTDLL.@)
1826 */
1827 NTSTATUS WINAPI LdrAddRefDll( ULONG flags, HMODULE module )
1828 {
1829 NTSTATUS ret = STATUS_SUCCESS;
1830 WINE_MODREF *wm;
1831
1832 if (flags) FIXME( "%p flags %x not implemented\n", module, flags );
1833
1834 RtlEnterCriticalSection( &loader_section );
1835
1836 if ((wm = get_modref( module )))
1837 {
1838 if (wm->ldr.LoadCount != -1) wm->ldr.LoadCount++;
1839 TRACE( "(%s) ldr.LoadCount: %d\n", debugstr_w(wm->ldr.BaseDllName.Buffer), wm->ldr.LoadCount );
1840 }
1841 else ret = STATUS_INVALID_PARAMETER;
1842
1843 RtlLeaveCriticalSection( &loader_section );
1844 return ret;
1845 }
1846
1847
1848 /******************************************************************
1849 * LdrQueryProcessModuleInformation
1850 *
1851 */
1852 NTSTATUS WINAPI LdrQueryProcessModuleInformation(PSYSTEM_MODULE_INFORMATION smi,
1853 ULONG buf_size, ULONG* req_size)
1854 {
1855 SYSTEM_MODULE* sm = &smi->Modules[0];
1856 ULONG size = sizeof(ULONG);
1857 NTSTATUS nts = STATUS_SUCCESS;
1858 ANSI_STRING str;
1859 char* ptr;
1860 PLIST_ENTRY mark, entry;
1861 PLDR_MODULE mod;
1862
1863 smi->ModulesCount = 0;
1864
1865 RtlEnterCriticalSection( &loader_section );
1866 mark = &NtCurrentTeb()->Peb->LdrData->InLoadOrderModuleList;
1867 for (entry = mark->Flink; entry != mark; entry = entry->Flink)
1868 {
1869 mod = CONTAINING_RECORD(entry, LDR_MODULE, InLoadOrderModuleList);
1870 size += sizeof(*sm);
1871 if (size <= buf_size)
1872 {
1873 sm->Reserved1 = 0; /* FIXME */
1874 sm->Reserved2 = 0; /* FIXME */
1875 sm->ImageBaseAddress = mod->BaseAddress;
1876 sm->ImageSize = mod->SizeOfImage;
1877 sm->Flags = mod->Flags;
1878 sm->Id = 0; /* FIXME */
1879 sm->Rank = 0; /* FIXME */
1880 sm->Unknown = 0; /* FIXME */
1881 str.Length = 0;
1882 str.MaximumLength = MAXIMUM_FILENAME_LENGTH;
1883 str.Buffer = (char*)sm->Name;
1884 RtlUnicodeStringToAnsiString(&str, &mod->FullDllName, FALSE);
1885 ptr = strrchr(str.Buffer, '\\');
1886 sm->NameOffset = (ptr != NULL) ? (ptr - str.Buffer + 1) : 0;
1887
1888 smi->ModulesCount++;
1889 sm++;
1890 }
1891 else nts = STATUS_INFO_LENGTH_MISMATCH;
1892 }
1893 RtlLeaveCriticalSection( &loader_section );
1894
1895 if (req_size) *req_size = size;
1896
1897 return nts;
1898 }
1899
1900
1901 /******************************************************************
1902 * RtlDllShutdownInProgress (NTDLL.@)
1903 */
1904 BOOLEAN WINAPI RtlDllShutdownInProgress(void)
1905 {
1906 return process_detaching;
1907 }
1908
1909
1910 /******************************************************************
1911 * LdrShutdownProcess (NTDLL.@)
1912 *
1913 */
1914 void WINAPI LdrShutdownProcess(void)
1915 {
1916 TRACE("()\n");
1917 process_detach( TRUE, (LPVOID)1 );
1918 }
1919
1920 /******************************************************************
1921 * LdrShutdownThread (NTDLL.@)
1922 *
1923 */
1924 void WINAPI LdrShutdownThread(void)
1925 {
1926 PLIST_ENTRY mark, entry;
1927 PLDR_MODULE mod;
1928
1929 TRACE("()\n");
1930
1931 /* don't do any detach calls if process is exiting */
1932 if (process_detaching) return;
1933 /* FIXME: there is still a race here */
1934
1935 RtlEnterCriticalSection( &loader_section );
1936
1937 mark = &NtCurrentTeb()->Peb->LdrData->InInitializationOrderModuleList;
1938 for (entry = mark->Blink; entry != mark; entry = entry->Blink)
1939 {
1940 mod = CONTAINING_RECORD(entry, LDR_MODULE,
1941 InInitializationOrderModuleList);
1942 if ( !(mod->Flags & LDR_PROCESS_ATTACHED) )
1943 continue;
1944 if ( mod->Flags & LDR_NO_DLL_CALLS )
1945 continue;
1946
1947 MODULE_InitDLL( CONTAINING_RECORD(mod, WINE_MODREF, ldr),
1948 DLL_THREAD_DETACH, NULL );
1949 }
1950
1951 RtlLeaveCriticalSection( &loader_section );
1952 RtlFreeHeap( GetProcessHeap(), 0, NtCurrentTeb()->ThreadLocalStoragePointer );
1953 }
1954
1955
1956 /***********************************************************************
1957 * free_modref
1958 *
1959 */
1960 static void free_modref( WINE_MODREF *wm )
1961 {
1962 RemoveEntryList(&wm->ldr.InLoadOrderModuleList);
1963 RemoveEntryList(&wm->ldr.InMemoryOrderModuleList);
1964 if (wm->ldr.InInitializationOrderModuleList.Flink)
1965 RemoveEntryList(&wm->ldr.InInitializationOrderModuleList);
1966
1967 TRACE(" unloading %s\n", debugstr_w(wm->ldr.FullDllName.Buffer));
1968 if (!TRACE_ON(module))
1969 TRACE_(loaddll)("Unloaded module %s : %s\n",
1970 debugstr_w(wm->ldr.FullDllName.Buffer),
1971 (wm->ldr.Flags & LDR_WINE_INTERNAL) ? "builtin" : "native" );
1972
1973 SERVER_START_REQ( unload_dll )
1974 {
1975 req->base = wm->ldr.BaseAddress;
1976 wine_server_call( req );
1977 }
1978 SERVER_END_REQ;
1979
1980 NtUnmapViewOfSection( NtCurrentProcess(), wm->ldr.BaseAddress );
1981 if (wm->ldr.Flags & LDR_WINE_INTERNAL) wine_dll_unload( wm->ldr.SectionHandle );
1982 if (cached_modref == wm) cached_modref = NULL;
1983 RtlFreeUnicodeString( &wm->ldr.FullDllName );
1984 RtlFreeHeap( GetProcessHeap(), 0, wm->deps );
1985 RtlFreeHeap( GetProcessHeap(), 0, wm );
1986 }
1987
1988 /***********************************************************************
1989 * MODULE_FlushModrefs
1990 *
1991 * Remove all unused modrefs and call the internal unloading routines
1992 * for the library type.
1993 *
1994 * The loader_section must be locked while calling this function.
1995 */
1996 static void MODULE_FlushModrefs(void)
1997 {
1998 PLIST_ENTRY mark, entry, prev;
1999 PLDR_MODULE mod;
2000 WINE_MODREF*wm;
2001
2002 mark = &NtCurrentTeb()->Peb->LdrData->InInitializationOrderModuleList;
2003 for (entry = mark->Blink; entry != mark; entry = prev)
2004 {
2005 mod = CONTAINING_RECORD(entry, LDR_MODULE, InInitializationOrderModuleList);
2006 wm = CONTAINING_RECORD(mod, WINE_MODREF, ldr);
2007 prev = entry->Blink;
2008 if (!mod->LoadCount) free_modref( wm );
2009 }
2010
2011 /* check load order list too for modules that haven't been initialized yet */
2012 mark = &NtCurrentTeb()->Peb->LdrData->InLoadOrderModuleList;
2013 for (entry = mark->Blink; entry != mark; entry = prev)
2014 {
2015 mod = CONTAINING_RECORD(entry, LDR_MODULE, InLoadOrderModuleList);
2016 wm = CONTAINING_RECORD(mod, WINE_MODREF, ldr);
2017 prev = entry->Blink;
2018 if (!mod->LoadCount) free_modref( wm );
2019 }
2020 }
2021
2022 /***********************************************************************
2023 * MODULE_DecRefCount
2024 *
2025 * The loader_section must be locked while calling this function.
2026 */
2027 static void MODULE_DecRefCount( WINE_MODREF *wm )
2028 {
2029 int i;
2030
2031 if ( wm->ldr.Flags & LDR_UNLOAD_IN_PROGRESS )
2032 return;
2033
2034 if ( wm->ldr.LoadCount <= 0 )
2035 return;
2036
2037 --wm->ldr.LoadCount;
2038 TRACE("(%s) ldr.LoadCount: %d\n", debugstr_w(wm->ldr.BaseDllName.Buffer), wm->ldr.LoadCount );
2039
2040 if ( wm->ldr.LoadCount == 0 )
2041 {
2042 wm->ldr.Flags |= LDR_UNLOAD_IN_PROGRESS;
2043
2044 for ( i = 0; i < wm->nDeps; i++ )
2045 if ( wm->deps[i] )
2046 MODULE_DecRefCount( wm->deps[i] );
2047
2048 wm->ldr.Flags &= ~LDR_UNLOAD_IN_PROGRESS;
2049 }
2050 }
2051
2052 /******************************************************************
2053 * LdrUnloadDll (NTDLL.@)
2054 *
2055 *
2056 */
2057 NTSTATUS WINAPI LdrUnloadDll( HMODULE hModule )
2058 {
2059 NTSTATUS retv = STATUS_SUCCESS;
2060
2061 TRACE("(%p)\n", hModule);
2062
2063 RtlEnterCriticalSection( &loader_section );
2064
2065 /* if we're stopping the whole process (and forcing the removal of all
2066 * DLLs) the library will be freed anyway
2067 */
2068 if (!process_detaching)
2069 {
2070 WINE_MODREF *wm;
2071
2072 free_lib_count++;
2073 if ((wm = get_modref( hModule )) != NULL)
2074 {
2075 TRACE("(%s) - START\n", debugstr_w(wm->ldr.BaseDllName.Buffer));
2076
2077 /* Recursively decrement reference counts */
2078 MODULE_DecRefCount( wm );
2079
2080 /* Call process detach notifications */
2081 if ( free_lib_count <= 1 )
2082 {
2083 process_detach( FALSE, NULL );
2084 MODULE_FlushModrefs();
2085 }
2086
2087 TRACE("END\n");
2088 }
2089 else
2090 retv = STATUS_DLL_NOT_FOUND;
2091
2092 free_lib_count--;
2093 }
2094
2095 RtlLeaveCriticalSection( &loader_section );
2096
2097 return retv;
2098 }
2099
2100 /***********************************************************************
2101 * RtlImageNtHeader (NTDLL.@)
2102 */
2103 PIMAGE_NT_HEADERS WINAPI RtlImageNtHeader(HMODULE hModule)
2104 {
2105 IMAGE_NT_HEADERS *ret;
2106
2107 __TRY
2108 {
2109 IMAGE_DOS_HEADER *dos = (IMAGE_DOS_HEADER *)hModule;
2110
2111 ret = NULL;
2112 if (dos->e_magic == IMAGE_DOS_SIGNATURE)
2113 {
2114 ret = (IMAGE_NT_HEADERS *)((char *)dos + dos->e_lfanew);
2115 if (ret->Signature != IMAGE_NT_SIGNATURE) ret = NULL;
2116 }
2117 }
2118 __EXCEPT_PAGE_FAULT
2119 {
2120 return NULL;
2121 }
2122 __ENDTRY
2123 return ret;
2124 }
2125
2126
2127 /******************************************************************
2128 * LdrInitializeThunk (NTDLL.@)
2129 *
2130 */
2131 void WINAPI LdrInitializeThunk( ULONG unknown1, ULONG unknown2, ULONG unknown3, ULONG unknown4 )
2132 {
2133 NTSTATUS status;
2134 WINE_MODREF *wm;
2135 LPCWSTR load_path;
2136 PEB *peb = NtCurrentTeb()->Peb;
2137 IMAGE_NT_HEADERS *nt = RtlImageNtHeader( peb->ImageBaseAddress );
2138
2139 if (main_exe_file) NtClose( main_exe_file ); /* at this point the main module is created */
2140
2141 /* allocate the modref for the main exe (if not already done) */
2142 wm = get_modref( peb->ImageBaseAddress );
2143 assert( wm );
2144 if (wm->ldr.Flags & LDR_IMAGE_IS_DLL)
2145 {
2146 ERR("%s is a dll, not an executable\n", debugstr_w(wm->ldr.FullDllName.Buffer) );
2147 exit(1);
2148 }
2149 wm->ldr.LoadCount = -1; /* can't unload main exe */
2150
2151 peb->ProcessParameters->ImagePathName = wm->ldr.FullDllName;
2152 version_init( wm->ldr.FullDllName.Buffer );
2153
2154 /* the main exe needs to be the first in the load order list */
2155 RemoveEntryList( &wm->ldr.InLoadOrderModuleList );
2156 InsertHeadList( &peb->LdrData->InLoadOrderModuleList, &wm->ldr.InLoadOrderModuleList );
2157
2158 status = server_init_process_done();
2159 if (status != STATUS_SUCCESS) goto error;
2160
2161 RtlEnterCriticalSection( &loader_section );
2162
2163 load_path = NtCurrentTeb()->Peb->ProcessParameters->DllPath.Buffer;
2164 if ((status = fixup_imports( wm, load_path )) != STATUS_SUCCESS) goto error;
2165 if ((status = alloc_process_tls()) != STATUS_SUCCESS) goto error;
2166 if ((status = alloc_thread_tls()) != STATUS_SUCCESS) goto error;
2167 if ((status = process_attach( wm, (LPVOID)1 )) != STATUS_SUCCESS)
2168 {
2169 if (last_failed_modref)
2170 ERR( "%s failed to initialize, aborting\n", debugstr_w(last_failed_modref->ldr.BaseDllName.Buffer) + 1 );
2171 goto error;
2172 }
2173 attach_implicitly_loaded_dlls( (LPVOID)1 );
2174
2175 RtlLeaveCriticalSection( &loader_section );
2176
2177 if (nt->FileHeader.Characteristics & IMAGE_FILE_LARGE_ADDRESS_AWARE) VIRTUAL_UseLargeAddressSpace();
2178 return;
2179
2180 error:
2181 ERR( "Main exe initialization for %s failed, status %x\n",
2182 debugstr_w(peb->ProcessParameters->ImagePathName.Buffer), status );
2183 exit(1);
2184 }
2185
2186
2187 /***********************************************************************
2188 * RtlImageDirectoryEntryToData (NTDLL.@)
2189 */
2190 PVOID WINAPI RtlImageDirectoryEntryToData( HMODULE module, BOOL image, WORD dir, ULONG *size )
2191 {
2192 const IMAGE_NT_HEADERS *nt;
2193 DWORD addr;
2194
2195 if ((ULONG_PTR)module & 1) /* mapped as data file */
2196 {
2197 module = (HMODULE)((ULONG_PTR)module & ~1);
2198 image = FALSE;
2199 }
2200 if (!(nt = RtlImageNtHeader( module ))) return NULL;
2201 if (dir >= nt->OptionalHeader.NumberOfRvaAndSizes) return NULL;
2202 if (!(addr = nt->OptionalHeader.DataDirectory[dir].VirtualAddress)) return NULL;
2203 *size = nt->OptionalHeader.DataDirectory[dir].Size;
2204 if (image || addr < nt->OptionalHeader.SizeOfHeaders) return (char *)module + addr;
2205
2206 /* not mapped as image, need to find the section containing the virtual address */
2207 return RtlImageRvaToVa( nt, module, addr, NULL );
2208 }
2209
2210
2211 /***********************************************************************
2212 * RtlImageRvaToSection (NTDLL.@)
2213 */
2214 PIMAGE_SECTION_HEADER WINAPI RtlImageRvaToSection( const IMAGE_NT_HEADERS *nt,
2215 HMODULE module, DWORD rva )
2216 {
2217 int i;
2218 const IMAGE_SECTION_HEADER *sec;
2219
2220 sec = (const IMAGE_SECTION_HEADER*)((const char*)&nt->OptionalHeader +
2221 nt->FileHeader.SizeOfOptionalHeader);
2222 for (i = 0; i < nt->FileHeader.NumberOfSections; i++, sec++)
2223 {
2224 if ((sec->VirtualAddress <= rva) && (sec->VirtualAddress + sec->SizeOfRawData > rva))
2225 return (PIMAGE_SECTION_HEADER)sec;
2226 }
2227 return NULL;
2228 }
2229
2230
2231 /***********************************************************************
2232 * RtlImageRvaToVa (NTDLL.@)
2233 */
2234 PVOID WINAPI RtlImageRvaToVa( const IMAGE_NT_HEADERS *nt, HMODULE module,
2235 DWORD rva, IMAGE_SECTION_HEADER **section )
2236 {
2237 IMAGE_SECTION_HEADER *sec;
2238
2239 if (section && *section) /* try this section first */
2240 {
2241 sec = *section;
2242 if ((sec->VirtualAddress <= rva) && (sec->VirtualAddress + sec->SizeOfRawData > rva))
2243 goto found;
2244 }
2245 if (!(sec = RtlImageRvaToSection( nt, module, rva ))) return NULL;
2246 found:
2247 if (section) *section = sec;
2248 return (char *)module + sec->PointerToRawData + (rva - sec->VirtualAddress);
2249 }
2250
2251
2252 /***********************************************************************
2253 * RtlPcToFileHeader (NTDLL.@)
2254 */
2255 PVOID WINAPI RtlPcToFileHeader( PVOID pc, PVOID *address )
2256 {
2257 LDR_MODULE *module;
2258 PVOID ret = NULL;
2259
2260 RtlEnterCriticalSection( &loader_section );
2261 if (!LdrFindEntryForAddress( pc, &module )) ret = module->BaseAddress;
2262 RtlLeaveCriticalSection( &loader_section );
2263 *address = ret;
2264 return ret;
2265 }
2266
2267
2268 /***********************************************************************
2269 * NtLoadDriver (NTDLL.@)
2270 * ZwLoadDriver (NTDLL.@)
2271 */
2272 NTSTATUS WINAPI NtLoadDriver( const UNICODE_STRING *DriverServiceName )
2273 {
2274 FIXME("(%p), stub!\n",DriverServiceName);
2275 return STATUS_NOT_IMPLEMENTED;
2276 }
2277
2278
2279 /***********************************************************************
2280 * NtUnloadDriver (NTDLL.@)
2281 * ZwUnloadDriver (NTDLL.@)
2282 */
2283 NTSTATUS WINAPI NtUnloadDriver( const UNICODE_STRING *DriverServiceName )
2284 {
2285 FIXME("(%p), stub!\n",DriverServiceName);
2286 return STATUS_NOT_IMPLEMENTED;
2287 }
2288
2289
2290 /******************************************************************
2291 * DllMain (NTDLL.@)
2292 */
2293 BOOL WINAPI DllMain( HINSTANCE inst, DWORD reason, LPVOID reserved )
2294 {
2295 if (reason == DLL_PROCESS_ATTACH) LdrDisableThreadCalloutsForDll( inst );
2296 return TRUE;
2297 }
2298
2299
2300 /******************************************************************
2301 * __wine_init_windows_dir (NTDLL.@)
2302 *
2303 * Windows and system dir initialization once kernel32 has been loaded.
2304 */
2305 void __wine_init_windows_dir( const WCHAR *windir, const WCHAR *sysdir )
2306 {
2307 PLIST_ENTRY mark, entry;
2308 LPWSTR buffer, p;
2309
2310 RtlCreateUnicodeString( &system_dir, sysdir );
2311 strcpyW( user_shared_data->NtSystemRoot, windir );
2312
2313 /* prepend the system dir to the name of the already created modules */
2314 mark = &NtCurrentTeb()->Peb->LdrData->InLoadOrderModuleList;
2315 for (entry = mark->Flink; entry != mark; entry = entry->Flink)
2316 {
2317 LDR_MODULE *mod = CONTAINING_RECORD( entry, LDR_MODULE, InLoadOrderModuleList );
2318
2319 assert( mod->Flags & LDR_WINE_INTERNAL );
2320
2321 buffer = RtlAllocateHeap( GetProcessHeap(), 0,
2322 system_dir.Length + mod->FullDllName.Length + 2*sizeof(WCHAR) );
2323 if (!buffer) continue;
2324 strcpyW( buffer, system_dir.Buffer );
2325 p = buffer + strlenW( buffer );
2326 if (p > buffer && p[-1] != '\\') *p++ = '\\';
2327 strcpyW( p, mod->FullDllName.Buffer );
2328 RtlInitUnicodeString( &mod->FullDllName, buffer );
2329 RtlInitUnicodeString( &mod->BaseDllName, p );
2330 }
2331 }
2332
2333
2334 /***********************************************************************
2335 * __wine_process_init
2336 */
2337 void __wine_process_init(void)
2338 {
2339 static const WCHAR kernel32W[] = {'k','e','r','n','e','l','3','2','.','d','l','l',0};
2340
2341 WINE_MODREF *wm;
2342 NTSTATUS status;
2343 ANSI_STRING func_name;
2344 void (* DECLSPEC_NORETURN init_func)(void);
2345 extern mode_t FILE_umask;
2346
2347 main_exe_file = thread_init();
2348
2349 /* retrieve current umask */
2350 FILE_umask = umask(0777);
2351 umask( FILE_umask );
2352
2353 /* setup the load callback and create ntdll modref */
2354 wine_dll_set_callback( load_builtin_callback );
2355
2356 if ((status = load_builtin_dll( NULL, kernel32W, 0, 0, &wm )) != STATUS_SUCCESS)
2357 {
2358 MESSAGE( "wine: could not load kernel32.dll, status %x\n", status );
2359 exit(1);
2360 }
2361 RtlInitAnsiString( &func_name, "__wine_kernel_init" );
2362 if ((status = LdrGetProcedureAddress( wm->ldr.BaseAddress, &func_name,
2363 0, (void **)&init_func )) != STATUS_SUCCESS)
2364 {
2365 MESSAGE( "wine: could not find __wine_kernel_init in kernel32.dll, status %x\n", status );
2366 exit(1);
2367 }
2368 init_func();
2369 }
GSOC 2012 project to enhance the control panel