ntdll: Fix get_server_context_flags.
[wine] / dlls / ntdll / thread.c
1 /*
2  * NT threads support
3  *
4  * Copyright 1996, 2003 Alexandre Julliard
5  *
6  * This library is free software; you can redistribute it and/or
7  * modify it under the terms of the GNU Lesser General Public
8  * License as published by the Free Software Foundation; either
9  * version 2.1 of the License, or (at your option) any later version.
10  *
11  * This library is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
14  * Lesser General Public License for more details.
15  *
16  * You should have received a copy of the GNU Lesser General Public
17  * License along with this library; if not, write to the Free Software
18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
19  */
20
21 #include "config.h"
22 #include "wine/port.h"
23
24 #include <assert.h>
25 #include <stdarg.h>
26 #include <sys/types.h>
27 #ifdef HAVE_SYS_MMAN_H
28 #include <sys/mman.h>
29 #endif
30 #ifdef HAVE_SYS_TIMES_H
31 #include <sys/times.h>
32 #endif
33
34 #define NONAMELESSUNION
35 #include "ntstatus.h"
36 #define WIN32_NO_STATUS
37 #include "winternl.h"
38 #include "wine/library.h"
39 #include "wine/server.h"
40 #include "wine/debug.h"
41 #include "ntdll_misc.h"
42 #include "ddk/wdm.h"
43 #include "wine/exception.h"
44
45 WINE_DEFAULT_DEBUG_CHANNEL(thread);
46 WINE_DECLARE_DEBUG_CHANNEL(relay);
47
48 struct _KUSER_SHARED_DATA *user_shared_data = NULL;
49
50 PUNHANDLED_EXCEPTION_FILTER unhandled_exception_filter = NULL;
51
52 /* info passed to a starting thread */
53 struct startup_info
54 {
55     TEB                            *teb;
56     PRTL_THREAD_START_ROUTINE       entry_point;
57     void                           *entry_arg;
58 };
59
60 static PEB_LDR_DATA ldr;
61 static RTL_USER_PROCESS_PARAMETERS params;  /* default parameters if no parent */
62 static WCHAR current_dir[MAX_NT_PATH_LENGTH];
63 static RTL_BITMAP tls_bitmap;
64 static RTL_BITMAP tls_expansion_bitmap;
65 static RTL_BITMAP fls_bitmap;
66 static LIST_ENTRY tls_links;
67 static size_t sigstack_total_size;
68 static ULONG sigstack_zero_bits;
69 static int nb_threads = 1;
70
71 static RTL_CRITICAL_SECTION ldt_section;
72 static RTL_CRITICAL_SECTION_DEBUG critsect_debug =
73 {
74     0, 0, &ldt_section,
75     { &critsect_debug.ProcessLocksList, &critsect_debug.ProcessLocksList },
76       0, 0, { (DWORD_PTR)(__FILE__ ": ldt_section") }
77 };
78 static RTL_CRITICAL_SECTION ldt_section = { &critsect_debug, -1, 0, 0, 0, 0 };
79 static sigset_t ldt_sigset;
80
81 /***********************************************************************
82  *           locking for LDT routines
83  */
84 static void ldt_lock(void)
85 {
86     sigset_t sigset;
87
88     pthread_sigmask( SIG_BLOCK, &server_block_set, &sigset );
89     RtlEnterCriticalSection( &ldt_section );
90     if (ldt_section.RecursionCount == 1) ldt_sigset = sigset;
91 }
92
93 static void ldt_unlock(void)
94 {
95     if (ldt_section.RecursionCount == 1)
96     {
97         sigset_t sigset = ldt_sigset;
98         RtlLeaveCriticalSection( &ldt_section );
99         pthread_sigmask( SIG_SETMASK, &sigset, NULL );
100     }
101     else RtlLeaveCriticalSection( &ldt_section );
102 }
103
104
105 /***********************************************************************
106  *           init_teb
107  */
108 static inline NTSTATUS init_teb( TEB *teb )
109 {
110     struct ntdll_thread_data *thread_data = (struct ntdll_thread_data *)teb->SystemReserved2;
111
112     teb->Tib.ExceptionList = (void *)~0UL;
113     teb->Tib.StackBase     = (void *)~0UL;
114     teb->Tib.Self          = &teb->Tib;
115     teb->StaticUnicodeString.Buffer        = teb->StaticUnicodeBuffer;
116     teb->StaticUnicodeString.MaximumLength = sizeof(teb->StaticUnicodeBuffer);
117
118     if (!(thread_data->fs = wine_ldt_alloc_fs())) return STATUS_TOO_MANY_THREADS;
119     thread_data->request_fd = -1;
120     thread_data->reply_fd   = -1;
121     thread_data->wait_fd[0] = -1;
122     thread_data->wait_fd[1] = -1;
123
124     return STATUS_SUCCESS;
125 }
126
127
128 /***********************************************************************
129  *           fix_unicode_string
130  *
131  * Make sure the unicode string doesn't point beyond the end pointer
132  */
133 static inline void fix_unicode_string( UNICODE_STRING *str, const char *end_ptr )
134 {
135     if ((char *)str->Buffer >= end_ptr)
136     {
137         str->Length = str->MaximumLength = 0;
138         str->Buffer = NULL;
139         return;
140     }
141     if ((char *)str->Buffer + str->MaximumLength > end_ptr)
142     {
143         str->MaximumLength = (end_ptr - (char *)str->Buffer) & ~(sizeof(WCHAR) - 1);
144     }
145     if (str->Length >= str->MaximumLength)
146     {
147         if (str->MaximumLength >= sizeof(WCHAR))
148             str->Length = str->MaximumLength - sizeof(WCHAR);
149         else
150             str->Length = str->MaximumLength = 0;
151     }
152 }
153
154
155 /***********************************************************************
156  *           init_user_process_params
157  *
158  * Fill the RTL_USER_PROCESS_PARAMETERS structure from the server.
159  */
160 static NTSTATUS init_user_process_params( SIZE_T info_size, HANDLE *exe_file )
161 {
162     void *ptr;
163     SIZE_T env_size;
164     NTSTATUS status;
165     RTL_USER_PROCESS_PARAMETERS *params = NULL;
166
167     status = NtAllocateVirtualMemory( NtCurrentProcess(), (void **)&params, 0, &info_size,
168                                       MEM_COMMIT, PAGE_READWRITE );
169     if (status != STATUS_SUCCESS) return status;
170
171     params->AllocationSize = info_size;
172     NtCurrentTeb()->Peb->ProcessParameters = params;
173
174     SERVER_START_REQ( get_startup_info )
175     {
176         wine_server_set_reply( req, params, info_size );
177         if (!(status = wine_server_call( req )))
178         {
179             info_size = wine_server_reply_size( reply );
180             *exe_file = wine_server_ptr_handle( reply->exe_file );
181             params->hStdInput  = wine_server_ptr_handle( reply->hstdin );
182             params->hStdOutput = wine_server_ptr_handle( reply->hstdout );
183             params->hStdError  = wine_server_ptr_handle( reply->hstderr );
184         }
185     }
186     SERVER_END_REQ;
187     if (status != STATUS_SUCCESS) return status;
188
189     if (params->Size > info_size) params->Size = info_size;
190
191     /* make sure the strings are valid */
192     fix_unicode_string( &params->CurrentDirectory.DosPath, (char *)info_size );
193     fix_unicode_string( &params->DllPath, (char *)info_size );
194     fix_unicode_string( &params->ImagePathName, (char *)info_size );
195     fix_unicode_string( &params->CommandLine, (char *)info_size );
196     fix_unicode_string( &params->WindowTitle, (char *)info_size );
197     fix_unicode_string( &params->Desktop, (char *)info_size );
198     fix_unicode_string( &params->ShellInfo, (char *)info_size );
199     fix_unicode_string( &params->RuntimeInfo, (char *)info_size );
200
201     /* environment needs to be a separate memory block */
202     env_size = info_size - params->Size;
203     if (!env_size) env_size = 1;
204     ptr = NULL;
205     status = NtAllocateVirtualMemory( NtCurrentProcess(), &ptr, 0, &env_size,
206                                       MEM_COMMIT, PAGE_READWRITE );
207     if (status != STATUS_SUCCESS) return status;
208     memcpy( ptr, (char *)params + params->Size, info_size - params->Size );
209     params->Environment = ptr;
210
211     RtlNormalizeProcessParams( params );
212     return status;
213 }
214
215
216 /***********************************************************************
217  *           thread_init
218  *
219  * Setup the initial thread.
220  *
221  * NOTES: The first allocated TEB on NT is at 0x7ffde000.
222  */
223 HANDLE thread_init(void)
224 {
225     PEB *peb;
226     TEB *teb;
227     void *addr;
228     SIZE_T size, info_size;
229     HANDLE exe_file = 0;
230     LARGE_INTEGER now;
231     struct ntdll_thread_data *thread_data;
232     static struct debug_info debug_info;  /* debug info for initial thread */
233
234     virtual_init();
235
236     /* reserve space for shared user data */
237
238     addr = (void *)0x7ffe0000;
239     size = 0x10000;
240     NtAllocateVirtualMemory( NtCurrentProcess(), &addr, 0, &size, MEM_RESERVE|MEM_COMMIT, PAGE_READWRITE );
241     user_shared_data = addr;
242
243     /* allocate and initialize the PEB */
244
245     addr = NULL;
246     size = sizeof(*peb);
247     NtAllocateVirtualMemory( NtCurrentProcess(), &addr, 1, &size,
248                              MEM_COMMIT | MEM_TOP_DOWN, PAGE_READWRITE );
249     peb = addr;
250
251     peb->NumberOfProcessors = 1;
252     peb->ProcessParameters  = &params;
253     peb->TlsBitmap          = &tls_bitmap;
254     peb->TlsExpansionBitmap = &tls_expansion_bitmap;
255     peb->FlsBitmap          = &fls_bitmap;
256     peb->LdrData            = &ldr;
257     params.CurrentDirectory.DosPath.Buffer = current_dir;
258     params.CurrentDirectory.DosPath.MaximumLength = sizeof(current_dir);
259     params.wShowWindow = 1; /* SW_SHOWNORMAL */
260     RtlInitializeBitMap( &tls_bitmap, peb->TlsBitmapBits, sizeof(peb->TlsBitmapBits) * 8 );
261     RtlInitializeBitMap( &tls_expansion_bitmap, peb->TlsExpansionBitmapBits,
262                          sizeof(peb->TlsExpansionBitmapBits) * 8 );
263     RtlInitializeBitMap( &fls_bitmap, peb->FlsBitmapBits, sizeof(peb->FlsBitmapBits) * 8 );
264     InitializeListHead( &peb->FlsListHead );
265     InitializeListHead( &ldr.InLoadOrderModuleList );
266     InitializeListHead( &ldr.InMemoryOrderModuleList );
267     InitializeListHead( &ldr.InInitializationOrderModuleList );
268     InitializeListHead( &tls_links );
269
270     /* allocate and initialize the initial TEB */
271
272     sigstack_total_size = get_signal_stack_total_size();
273     while (1U << sigstack_zero_bits < sigstack_total_size) sigstack_zero_bits++;
274     assert( 1U << sigstack_zero_bits == sigstack_total_size );  /* must be a power of 2 */
275     assert( sigstack_total_size >= sizeof(TEB) + sizeof(struct startup_info) );
276
277     addr = NULL;
278     size = sigstack_total_size;
279     NtAllocateVirtualMemory( NtCurrentProcess(), &addr, sigstack_zero_bits,
280                              &size, MEM_COMMIT | MEM_TOP_DOWN, PAGE_READWRITE );
281     teb = addr;
282     teb->Peb = peb;
283     init_teb( teb );
284     thread_data = (struct ntdll_thread_data *)teb->SystemReserved2;
285     thread_data->debug_info = &debug_info;
286     InsertHeadList( &tls_links, &teb->TlsLinks );
287
288     signal_init_thread( teb );
289     virtual_init_threading();
290
291     debug_info.str_pos = debug_info.strings;
292     debug_info.out_pos = debug_info.output;
293     debug_init();
294
295     /* setup the server connection */
296     server_init_process();
297     info_size = server_init_thread( peb );
298
299     /* create the process heap */
300     if (!(peb->ProcessHeap = RtlCreateHeap( HEAP_GROWABLE, NULL, 0, 0, NULL, NULL )))
301     {
302         MESSAGE( "wine: failed to create the process heap\n" );
303         exit(1);
304     }
305
306     /* allocate user parameters */
307     if (info_size)
308     {
309         init_user_process_params( info_size, &exe_file );
310     }
311     else
312     {
313         /* This is wine specific: we have no parent (we're started from unix)
314          * so, create a simple console with bare handles to unix stdio
315          */
316         wine_server_fd_to_handle( 0, GENERIC_READ|SYNCHRONIZE,  OBJ_INHERIT, &params.hStdInput );
317         wine_server_fd_to_handle( 1, GENERIC_WRITE|SYNCHRONIZE, OBJ_INHERIT, &params.hStdOutput );
318         wine_server_fd_to_handle( 2, GENERIC_WRITE|SYNCHRONIZE, OBJ_INHERIT, &params.hStdError );
319     }
320
321     /* initialize LDT locking */
322     wine_ldt_init_locking( ldt_lock, ldt_unlock );
323
324     /* initialize time values in user_shared_data */
325     NtQuerySystemTime( &now );
326     user_shared_data->SystemTime.LowPart = now.u.LowPart;
327     user_shared_data->SystemTime.High1Time = user_shared_data->SystemTime.High2Time = now.u.HighPart;
328     user_shared_data->u.TickCountQuad = (now.QuadPart - server_start_time) / 10000;
329     user_shared_data->u.TickCount.High2Time = user_shared_data->u.TickCount.High1Time;
330     user_shared_data->TickCountLowDeprecated = user_shared_data->u.TickCount.LowPart;
331     user_shared_data->TickCountMultiplier = 1 << 24;
332
333     return exe_file;
334 }
335
336
337 /***********************************************************************
338  *           abort_thread
339  */
340 void abort_thread( int status )
341 {
342     pthread_sigmask( SIG_BLOCK, &server_block_set, NULL );
343     if (interlocked_xchg_add( &nb_threads, -1 ) <= 1) _exit( status );
344
345     close( ntdll_get_thread_data()->wait_fd[0] );
346     close( ntdll_get_thread_data()->wait_fd[1] );
347     close( ntdll_get_thread_data()->reply_fd );
348     close( ntdll_get_thread_data()->request_fd );
349     pthread_exit( UIntToPtr(status) );
350 }
351
352
353 /***********************************************************************
354  *           exit_thread
355  */
356 void exit_thread( int status )
357 {
358     static void *prev_teb;
359     TEB *teb;
360
361     if (status)  /* send the exit code to the server (0 is already the default) */
362     {
363         SERVER_START_REQ( terminate_thread )
364         {
365             req->handle    = wine_server_obj_handle( GetCurrentThread() );
366             req->exit_code = status;
367             wine_server_call( req );
368         }
369         SERVER_END_REQ;
370     }
371
372     if (interlocked_xchg_add( &nb_threads, -1 ) <= 1)
373     {
374         LdrShutdownProcess();
375         exit( status );
376     }
377
378     LdrShutdownThread();
379     RtlAcquirePebLock();
380     RemoveEntryList( &NtCurrentTeb()->TlsLinks );
381     RtlReleasePebLock();
382     RtlFreeHeap( GetProcessHeap(), 0, NtCurrentTeb()->FlsSlots );
383     RtlFreeHeap( GetProcessHeap(), 0, NtCurrentTeb()->TlsExpansionSlots );
384
385     pthread_sigmask( SIG_BLOCK, &server_block_set, NULL );
386
387     if ((teb = interlocked_xchg_ptr( &prev_teb, NtCurrentTeb() )))
388     {
389         struct ntdll_thread_data *thread_data = (struct ntdll_thread_data *)teb->SystemReserved2;
390         SIZE_T size;
391
392         pthread_join( thread_data->pthread_id, NULL );
393         wine_ldt_free_fs( thread_data->fs );
394         size = 0;
395         NtFreeVirtualMemory( GetCurrentProcess(), &teb->DeallocationStack, &size, MEM_RELEASE );
396         size = 0;
397         NtFreeVirtualMemory( GetCurrentProcess(), (void **)&teb, &size, MEM_RELEASE );
398     }
399
400     close( ntdll_get_thread_data()->wait_fd[0] );
401     close( ntdll_get_thread_data()->wait_fd[1] );
402     close( ntdll_get_thread_data()->reply_fd );
403     close( ntdll_get_thread_data()->request_fd );
404     pthread_exit( UIntToPtr(status) );
405 }
406
407
408 /***********************************************************************
409  *           start_thread
410  *
411  * Startup routine for a newly created thread.
412  */
413 static void start_thread( struct startup_info *info )
414 {
415     TEB *teb = info->teb;
416     struct ntdll_thread_data *thread_data = (struct ntdll_thread_data *)teb->SystemReserved2;
417     PRTL_THREAD_START_ROUTINE func = info->entry_point;
418     void *arg = info->entry_arg;
419     struct debug_info debug_info;
420
421     debug_info.str_pos = debug_info.strings;
422     debug_info.out_pos = debug_info.output;
423     thread_data->debug_info = &debug_info;
424     thread_data->pthread_id = pthread_self();
425
426     signal_init_thread( teb );
427     server_init_thread( func );
428     pthread_sigmask( SIG_UNBLOCK, &server_block_set, NULL );
429
430     RtlAcquirePebLock();
431     InsertHeadList( &tls_links, &teb->TlsLinks );
432     RtlReleasePebLock();
433
434     MODULE_DllThreadAttach( NULL );
435
436     if (TRACE_ON(relay))
437         DPRINTF( "%04x:Starting thread proc %p (arg=%p)\n", GetCurrentThreadId(), func, arg );
438
439     call_thread_entry_point( (LPTHREAD_START_ROUTINE)func, arg );
440 }
441
442
443 /***********************************************************************
444  *              RtlCreateUserThread   (NTDLL.@)
445  */
446 NTSTATUS WINAPI RtlCreateUserThread( HANDLE process, const SECURITY_DESCRIPTOR *descr,
447                                      BOOLEAN suspended, PVOID stack_addr,
448                                      SIZE_T stack_reserve, SIZE_T stack_commit,
449                                      PRTL_THREAD_START_ROUTINE start, void *param,
450                                      HANDLE *handle_ptr, CLIENT_ID *id )
451 {
452     sigset_t sigset;
453     pthread_t pthread_id;
454     pthread_attr_t attr;
455     struct ntdll_thread_data *thread_data = NULL;
456     struct ntdll_thread_regs *thread_regs;
457     struct startup_info *info = NULL;
458     void *addr = NULL;
459     HANDLE handle = 0;
460     TEB *teb;
461     DWORD tid = 0;
462     int request_pipe[2];
463     NTSTATUS status;
464     SIZE_T size;
465
466     if (process != NtCurrentProcess())
467     {
468         apc_call_t call;
469         apc_result_t result;
470
471         memset( &call, 0, sizeof(call) );
472
473         call.create_thread.type    = APC_CREATE_THREAD;
474         call.create_thread.func    = wine_server_client_ptr( start );
475         call.create_thread.arg     = wine_server_client_ptr( param );
476         call.create_thread.reserve = stack_reserve;
477         call.create_thread.commit  = stack_commit;
478         call.create_thread.suspend = suspended;
479         status = NTDLL_queue_process_apc( process, &call, &result );
480         if (status != STATUS_SUCCESS) return status;
481
482         if (result.create_thread.status == STATUS_SUCCESS)
483         {
484             if (id) id->UniqueThread = ULongToHandle(result.create_thread.tid);
485             if (handle_ptr) *handle_ptr = wine_server_ptr_handle( result.create_thread.handle );
486             else NtClose( wine_server_ptr_handle( result.create_thread.handle ));
487         }
488         return result.create_thread.status;
489     }
490
491     if (server_pipe( request_pipe ) == -1) return STATUS_TOO_MANY_OPENED_FILES;
492     wine_server_send_fd( request_pipe[0] );
493
494     SERVER_START_REQ( new_thread )
495     {
496         req->access     = THREAD_ALL_ACCESS;
497         req->attributes = 0;  /* FIXME */
498         req->suspend    = suspended;
499         req->request_fd = request_pipe[0];
500         if (!(status = wine_server_call( req )))
501         {
502             handle = wine_server_ptr_handle( reply->handle );
503             tid = reply->tid;
504         }
505         close( request_pipe[0] );
506     }
507     SERVER_END_REQ;
508
509     if (status)
510     {
511         close( request_pipe[1] );
512         return status;
513     }
514
515     pthread_sigmask( SIG_BLOCK, &server_block_set, &sigset );
516
517     addr = NULL;
518     size = sigstack_total_size;
519     if ((status = NtAllocateVirtualMemory( NtCurrentProcess(), &addr, sigstack_zero_bits,
520                                            &size, MEM_COMMIT | MEM_TOP_DOWN, PAGE_READWRITE )))
521         goto error;
522     teb = addr;
523     teb->Peb = NtCurrentTeb()->Peb;
524     info = (struct startup_info *)(teb + 1);
525     info->teb         = teb;
526     info->entry_point = start;
527     info->entry_arg   = param;
528
529     if ((status = init_teb( teb ))) goto error;
530
531     teb->ClientId.UniqueProcess = ULongToHandle(GetCurrentProcessId());
532     teb->ClientId.UniqueThread  = ULongToHandle(tid);
533
534     thread_data = (struct ntdll_thread_data *)teb->SystemReserved2;
535     thread_regs = (struct ntdll_thread_regs *)teb->SpareBytes1;
536     thread_data->request_fd  = request_pipe[1];
537
538     /* inherit debug registers from parent thread */
539     thread_regs->dr0 = ntdll_get_thread_regs()->dr0;
540     thread_regs->dr1 = ntdll_get_thread_regs()->dr1;
541     thread_regs->dr2 = ntdll_get_thread_regs()->dr2;
542     thread_regs->dr3 = ntdll_get_thread_regs()->dr3;
543     thread_regs->dr6 = ntdll_get_thread_regs()->dr6;
544     thread_regs->dr7 = ntdll_get_thread_regs()->dr7;
545
546     if ((status = virtual_alloc_thread_stack( teb, stack_reserve, stack_commit ))) goto error;
547
548     pthread_attr_init( &attr );
549     pthread_attr_setstack( &attr, teb->DeallocationStack,
550                            (char *)teb->Tib.StackBase - (char *)teb->DeallocationStack );
551     pthread_attr_setscope( &attr, PTHREAD_SCOPE_SYSTEM ); /* force creating a kernel thread */
552     interlocked_xchg_add( &nb_threads, 1 );
553     if (pthread_create( &pthread_id, &attr, (void * (*)(void *))start_thread, info ))
554     {
555         interlocked_xchg_add( &nb_threads, -1 );
556         pthread_attr_destroy( &attr );
557         size = 0;
558         NtFreeVirtualMemory( NtCurrentProcess(), &teb->DeallocationStack, &size, MEM_RELEASE );
559         status = STATUS_NO_MEMORY;
560         goto error;
561     }
562     pthread_attr_destroy( &attr );
563     pthread_sigmask( SIG_SETMASK, &sigset, NULL );
564
565     if (id) id->UniqueThread = ULongToHandle(tid);
566     if (handle_ptr) *handle_ptr = handle;
567     else NtClose( handle );
568
569     return STATUS_SUCCESS;
570
571 error:
572     if (thread_data) wine_ldt_free_fs( thread_data->fs );
573     if (addr)
574     {
575         size = 0;
576         NtFreeVirtualMemory( NtCurrentProcess(), &addr, &size, MEM_RELEASE );
577     }
578     if (handle) NtClose( handle );
579     pthread_sigmask( SIG_SETMASK, &sigset, NULL );
580     close( request_pipe[1] );
581     return status;
582 }
583
584
585 /***********************************************************************
586  *              NtOpenThread   (NTDLL.@)
587  *              ZwOpenThread   (NTDLL.@)
588  */
589 NTSTATUS WINAPI NtOpenThread( HANDLE *handle, ACCESS_MASK access,
590                               const OBJECT_ATTRIBUTES *attr, const CLIENT_ID *id )
591 {
592     NTSTATUS ret;
593
594     SERVER_START_REQ( open_thread )
595     {
596         req->tid        = HandleToULong(id->UniqueThread);
597         req->access     = access;
598         req->attributes = attr ? attr->Attributes : 0;
599         ret = wine_server_call( req );
600         *handle = wine_server_ptr_handle( reply->handle );
601     }
602     SERVER_END_REQ;
603     return ret;
604 }
605
606
607 /******************************************************************************
608  *              NtSuspendThread   (NTDLL.@)
609  *              ZwSuspendThread   (NTDLL.@)
610  */
611 NTSTATUS WINAPI NtSuspendThread( HANDLE handle, PULONG count )
612 {
613     NTSTATUS ret;
614
615     SERVER_START_REQ( suspend_thread )
616     {
617         req->handle = wine_server_obj_handle( handle );
618         if (!(ret = wine_server_call( req ))) *count = reply->count;
619     }
620     SERVER_END_REQ;
621     return ret;
622 }
623
624
625 /******************************************************************************
626  *              NtResumeThread   (NTDLL.@)
627  *              ZwResumeThread   (NTDLL.@)
628  */
629 NTSTATUS WINAPI NtResumeThread( HANDLE handle, PULONG count )
630 {
631     NTSTATUS ret;
632
633     SERVER_START_REQ( resume_thread )
634     {
635         req->handle = wine_server_obj_handle( handle );
636         if (!(ret = wine_server_call( req ))) *count = reply->count;
637     }
638     SERVER_END_REQ;
639     return ret;
640 }
641
642
643 /******************************************************************************
644  *              NtAlertResumeThread   (NTDLL.@)
645  *              ZwAlertResumeThread   (NTDLL.@)
646  */
647 NTSTATUS WINAPI NtAlertResumeThread( HANDLE handle, PULONG count )
648 {
649     FIXME( "stub: should alert thread %p\n", handle );
650     return NtResumeThread( handle, count );
651 }
652
653
654 /******************************************************************************
655  *              NtAlertThread   (NTDLL.@)
656  *              ZwAlertThread   (NTDLL.@)
657  */
658 NTSTATUS WINAPI NtAlertThread( HANDLE handle )
659 {
660     FIXME( "stub: %p\n", handle );
661     return STATUS_NOT_IMPLEMENTED;
662 }
663
664
665 /******************************************************************************
666  *              NtTerminateThread  (NTDLL.@)
667  *              ZwTerminateThread  (NTDLL.@)
668  */
669 NTSTATUS WINAPI NtTerminateThread( HANDLE handle, LONG exit_code )
670 {
671     NTSTATUS ret;
672     BOOL self, last;
673
674     SERVER_START_REQ( terminate_thread )
675     {
676         req->handle    = wine_server_obj_handle( handle );
677         req->exit_code = exit_code;
678         ret = wine_server_call( req );
679         self = !ret && reply->self;
680         last = reply->last;
681     }
682     SERVER_END_REQ;
683
684     if (self)
685     {
686         if (last) _exit( exit_code );
687         else abort_thread( exit_code );
688     }
689     return ret;
690 }
691
692
693 /******************************************************************************
694  *              NtQueueApcThread  (NTDLL.@)
695  */
696 NTSTATUS WINAPI NtQueueApcThread( HANDLE handle, PNTAPCFUNC func, ULONG_PTR arg1,
697                                   ULONG_PTR arg2, ULONG_PTR arg3 )
698 {
699     NTSTATUS ret;
700     SERVER_START_REQ( queue_apc )
701     {
702         req->handle = wine_server_obj_handle( handle );
703         if (func)
704         {
705             req->call.type         = APC_USER;
706             req->call.user.func    = wine_server_client_ptr( func );
707             req->call.user.args[0] = arg1;
708             req->call.user.args[1] = arg2;
709             req->call.user.args[2] = arg3;
710         }
711         else req->call.type = APC_NONE;  /* wake up only */
712         ret = wine_server_call( req );
713     }
714     SERVER_END_REQ;
715     return ret;
716 }
717
718
719 /***********************************************************************
720  *              NtSetContextThread  (NTDLL.@)
721  *              ZwSetContextThread  (NTDLL.@)
722  */
723 NTSTATUS WINAPI NtSetContextThread( HANDLE handle, const CONTEXT *context )
724 {
725     NTSTATUS ret;
726     DWORD dummy, i;
727     BOOL self = FALSE;
728
729 #ifdef __i386__
730     /* on i386 debug registers always require a server call */
731     self = (handle == GetCurrentThread());
732     if (self && (context->ContextFlags & (CONTEXT_DEBUG_REGISTERS & ~CONTEXT_i386)))
733     {
734         struct ntdll_thread_regs * const regs = ntdll_get_thread_regs();
735         self = (regs->dr0 == context->Dr0 && regs->dr1 == context->Dr1 &&
736                 regs->dr2 == context->Dr2 && regs->dr3 == context->Dr3 &&
737                 regs->dr6 == context->Dr6 && regs->dr7 == context->Dr7);
738     }
739 #endif
740
741     if (!self)
742     {
743         context_t server_context;
744
745         context_to_server( &server_context, context );
746
747         SERVER_START_REQ( set_thread_context )
748         {
749             req->handle  = wine_server_obj_handle( handle );
750             req->suspend = 0;
751             wine_server_add_data( req, &server_context, sizeof(server_context) );
752             ret = wine_server_call( req );
753             self = reply->self;
754         }
755         SERVER_END_REQ;
756
757         if (ret == STATUS_PENDING)
758         {
759             if (NtSuspendThread( handle, &dummy ) == STATUS_SUCCESS)
760             {
761                 for (i = 0; i < 100; i++)
762                 {
763                     SERVER_START_REQ( set_thread_context )
764                     {
765                         req->handle  = wine_server_obj_handle( handle );
766                         req->suspend = 0;
767                         wine_server_add_data( req, &server_context, sizeof(server_context) );
768                         ret = wine_server_call( req );
769                     }
770                     SERVER_END_REQ;
771                     if (ret == STATUS_PENDING)
772                     {
773                         LARGE_INTEGER timeout;
774                         timeout.QuadPart = -10000;
775                         NtDelayExecution( FALSE, &timeout );
776                     }
777                     else break;
778                 }
779                 NtResumeThread( handle, &dummy );
780             }
781             if (ret == STATUS_PENDING) ret = STATUS_ACCESS_DENIED;
782         }
783
784         if (ret) return ret;
785     }
786
787     if (self) set_cpu_context( context );
788     return STATUS_SUCCESS;
789 }
790
791
792 /* convert CPU-specific flags to generic server flags */
793 static inline unsigned int get_server_context_flags( DWORD flags )
794 {
795     unsigned int ret = 0;
796
797     flags &= 0x3f;  /* mask CPU id flags */
798     if (flags & CONTEXT_CONTROL) ret |= SERVER_CTX_CONTROL;
799     if (flags & CONTEXT_INTEGER) ret |= SERVER_CTX_INTEGER;
800 #ifdef CONTEXT_SEGMENTS
801     if (flags & CONTEXT_SEGMENTS) ret |= SERVER_CTX_SEGMENTS;
802 #endif
803 #ifdef CONTEXT_FLOATING_POINT
804     if (flags & CONTEXT_FLOATING_POINT) ret |= SERVER_CTX_FLOATING_POINT;
805 #endif
806 #ifdef CONTEXT_DEBUG_REGISTERS
807     if (flags & CONTEXT_DEBUG_REGISTERS) ret |= SERVER_CTX_DEBUG_REGISTERS;
808 #endif
809 #ifdef CONTEXT_EXTENDED_REGISTERS
810     if (flags & CONTEXT_EXTENDED_REGISTERS) ret |= SERVER_CTX_EXTENDED_REGISTERS;
811 #endif
812     return ret;
813 }
814
815 /***********************************************************************
816  *              NtGetContextThread  (NTDLL.@)
817  *              ZwGetContextThread  (NTDLL.@)
818  */
819 NTSTATUS WINAPI NtGetContextThread( HANDLE handle, CONTEXT *context )
820 {
821     NTSTATUS ret;
822     DWORD dummy, i;
823     DWORD needed_flags = context->ContextFlags;
824     BOOL self = (handle == GetCurrentThread());
825
826 #ifdef __i386__
827     /* on i386 debug registers always require a server call */
828     if (context->ContextFlags & (CONTEXT_DEBUG_REGISTERS & ~CONTEXT_i386)) self = FALSE;
829 #endif
830
831     if (!self)
832     {
833         unsigned int server_flags = get_server_context_flags( context->ContextFlags );
834         context_t server_context;
835
836         SERVER_START_REQ( get_thread_context )
837         {
838             req->handle  = wine_server_obj_handle( handle );
839             req->flags   = server_flags;
840             req->suspend = 0;
841             wine_server_set_reply( req, &server_context, sizeof(server_context) );
842             ret = wine_server_call( req );
843             self = reply->self;
844         }
845         SERVER_END_REQ;
846
847         if (ret == STATUS_PENDING)
848         {
849             if (NtSuspendThread( handle, &dummy ) == STATUS_SUCCESS)
850             {
851                 for (i = 0; i < 100; i++)
852                 {
853                     SERVER_START_REQ( get_thread_context )
854                     {
855                         req->handle  = wine_server_obj_handle( handle );
856                         req->flags   = server_flags;
857                         req->suspend = 0;
858                         wine_server_set_reply( req, &server_context, sizeof(server_context) );
859                         ret = wine_server_call( req );
860                     }
861                     SERVER_END_REQ;
862                     if (ret == STATUS_PENDING)
863                     {
864                         LARGE_INTEGER timeout;
865                         timeout.QuadPart = -10000;
866                         NtDelayExecution( FALSE, &timeout );
867                     }
868                     else break;
869                 }
870                 NtResumeThread( handle, &dummy );
871             }
872             if (ret == STATUS_PENDING) ret = STATUS_ACCESS_DENIED;
873         }
874         if (!ret) ret = context_from_server( context, &server_context );
875         if (ret) return ret;
876         needed_flags &= ~context->ContextFlags;
877     }
878
879     if (self)
880     {
881         if (needed_flags)
882         {
883             CONTEXT ctx;
884             RtlCaptureContext( &ctx );
885             copy_context( context, &ctx, ctx.ContextFlags & needed_flags );
886             context->ContextFlags |= ctx.ContextFlags & needed_flags;
887         }
888 #ifdef __i386__
889         /* update the cached version of the debug registers */
890         if (context->ContextFlags & (CONTEXT_DEBUG_REGISTERS & ~CONTEXT_i386))
891         {
892             struct ntdll_thread_regs * const regs = ntdll_get_thread_regs();
893             regs->dr0 = context->Dr0;
894             regs->dr1 = context->Dr1;
895             regs->dr2 = context->Dr2;
896             regs->dr3 = context->Dr3;
897             regs->dr6 = context->Dr6;
898             regs->dr7 = context->Dr7;
899         }
900 #endif
901     }
902     return STATUS_SUCCESS;
903 }
904
905
906 /******************************************************************************
907  *              NtQueryInformationThread  (NTDLL.@)
908  *              ZwQueryInformationThread  (NTDLL.@)
909  */
910 NTSTATUS WINAPI NtQueryInformationThread( HANDLE handle, THREADINFOCLASS class,
911                                           void *data, ULONG length, ULONG *ret_len )
912 {
913     NTSTATUS status;
914
915     switch(class)
916     {
917     case ThreadBasicInformation:
918         {
919             THREAD_BASIC_INFORMATION info;
920             const ULONG_PTR affinity_mask = ((ULONG_PTR)1 << NtCurrentTeb()->Peb->NumberOfProcessors) - 1;
921
922             SERVER_START_REQ( get_thread_info )
923             {
924                 req->handle = wine_server_obj_handle( handle );
925                 req->tid_in = 0;
926                 if (!(status = wine_server_call( req )))
927                 {
928                     info.ExitStatus             = reply->exit_code;
929                     info.TebBaseAddress         = wine_server_get_ptr( reply->teb );
930                     info.ClientId.UniqueProcess = ULongToHandle(reply->pid);
931                     info.ClientId.UniqueThread  = ULongToHandle(reply->tid);
932                     info.AffinityMask           = reply->affinity & affinity_mask;
933                     info.Priority               = reply->priority;
934                     info.BasePriority           = reply->priority;  /* FIXME */
935                 }
936             }
937             SERVER_END_REQ;
938             if (status == STATUS_SUCCESS)
939             {
940                 if (data) memcpy( data, &info, min( length, sizeof(info) ));
941                 if (ret_len) *ret_len = min( length, sizeof(info) );
942             }
943         }
944         return status;
945     case ThreadAffinityMask:
946         {
947             const ULONG_PTR affinity_mask = ((ULONG_PTR)1 << NtCurrentTeb()->Peb->NumberOfProcessors) - 1;
948             ULONG_PTR affinity = 0;
949
950             SERVER_START_REQ( get_thread_info )
951             {
952                 req->handle = wine_server_obj_handle( handle );
953                 req->tid_in = 0;
954                 if (!(status = wine_server_call( req )))
955                     affinity = reply->affinity & affinity_mask;
956             }
957             SERVER_END_REQ;
958             if (status == STATUS_SUCCESS)
959             {
960                 if (data) memcpy( data, &affinity, min( length, sizeof(affinity) ));
961                 if (ret_len) *ret_len = min( length, sizeof(affinity) );
962             }
963         }
964         return status;
965     case ThreadTimes:
966         {
967             KERNEL_USER_TIMES   kusrt;
968             /* We need to do a server call to get the creation time or exit time */
969             /* This works on any thread */
970             SERVER_START_REQ( get_thread_info )
971             {
972                 req->handle = wine_server_obj_handle( handle );
973                 req->tid_in = 0;
974                 status = wine_server_call( req );
975                 if (status == STATUS_SUCCESS)
976                 {
977                     kusrt.CreateTime.QuadPart = reply->creation_time;
978                     kusrt.ExitTime.QuadPart = reply->exit_time;
979                 }
980             }
981             SERVER_END_REQ;
982             if (status == STATUS_SUCCESS)
983             {
984                 /* We call times(2) for kernel time or user time */
985                 /* We can only (portably) do this for the current thread */
986                 if (handle == GetCurrentThread())
987                 {
988                     struct tms time_buf;
989                     long clocks_per_sec = sysconf(_SC_CLK_TCK);
990
991                     times(&time_buf);
992                     kusrt.KernelTime.QuadPart = (ULONGLONG)time_buf.tms_stime * 10000000 / clocks_per_sec;
993                     kusrt.UserTime.QuadPart = (ULONGLONG)time_buf.tms_utime * 10000000 / clocks_per_sec;
994                 }
995                 else
996                 {
997                     static BOOL reported = FALSE;
998
999                     kusrt.KernelTime.QuadPart = 0;
1000                     kusrt.UserTime.QuadPart = 0;
1001                     if (reported)
1002                         TRACE("Cannot get kerneltime or usertime of other threads\n");
1003                     else
1004                     {
1005                         FIXME("Cannot get kerneltime or usertime of other threads\n");
1006                         reported = TRUE;
1007                     }
1008                 }
1009                 if (data) memcpy( data, &kusrt, min( length, sizeof(kusrt) ));
1010                 if (ret_len) *ret_len = min( length, sizeof(kusrt) );
1011             }
1012         }
1013         return status;
1014     case ThreadDescriptorTableEntry:
1015         {
1016 #ifdef __i386__
1017             THREAD_DESCRIPTOR_INFORMATION*      tdi = data;
1018             if (length < sizeof(*tdi))
1019                 status = STATUS_INFO_LENGTH_MISMATCH;
1020             else if (!(tdi->Selector & 4))  /* GDT selector */
1021             {
1022                 unsigned sel = tdi->Selector & ~3;  /* ignore RPL */
1023                 status = STATUS_SUCCESS;
1024                 if (!sel)  /* null selector */
1025                     memset( &tdi->Entry, 0, sizeof(tdi->Entry) );
1026                 else
1027                 {
1028                     tdi->Entry.BaseLow                   = 0;
1029                     tdi->Entry.HighWord.Bits.BaseMid     = 0;
1030                     tdi->Entry.HighWord.Bits.BaseHi      = 0;
1031                     tdi->Entry.LimitLow                  = 0xffff;
1032                     tdi->Entry.HighWord.Bits.LimitHi     = 0xf;
1033                     tdi->Entry.HighWord.Bits.Dpl         = 3;
1034                     tdi->Entry.HighWord.Bits.Sys         = 0;
1035                     tdi->Entry.HighWord.Bits.Pres        = 1;
1036                     tdi->Entry.HighWord.Bits.Granularity = 1;
1037                     tdi->Entry.HighWord.Bits.Default_Big = 1;
1038                     tdi->Entry.HighWord.Bits.Type        = 0x12;
1039                     /* it has to be one of the system GDT selectors */
1040                     if (sel != (wine_get_ds() & ~3) && sel != (wine_get_ss() & ~3))
1041                     {
1042                         if (sel == (wine_get_cs() & ~3))
1043                             tdi->Entry.HighWord.Bits.Type |= 8;  /* code segment */
1044                         else status = STATUS_ACCESS_DENIED;
1045                     }
1046                 }
1047             }
1048             else
1049             {
1050                 SERVER_START_REQ( get_selector_entry )
1051                 {
1052                     req->handle = wine_server_obj_handle( handle );
1053                     req->entry = tdi->Selector >> 3;
1054                     status = wine_server_call( req );
1055                     if (!status)
1056                     {
1057                         if (!(reply->flags & WINE_LDT_FLAGS_ALLOCATED))
1058                             status = STATUS_ACCESS_VIOLATION;
1059                         else
1060                         {
1061                             wine_ldt_set_base ( &tdi->Entry, (void *)reply->base );
1062                             wine_ldt_set_limit( &tdi->Entry, reply->limit );
1063                             wine_ldt_set_flags( &tdi->Entry, reply->flags );
1064                         }
1065                     }
1066                 }
1067                 SERVER_END_REQ;
1068             }
1069             if (status == STATUS_SUCCESS && ret_len)
1070                 /* yes, that's a bit strange, but it's the way it is */
1071                 *ret_len = sizeof(LDT_ENTRY);
1072 #else
1073             status = STATUS_NOT_IMPLEMENTED;
1074 #endif
1075             return status;
1076         }
1077     case ThreadAmILastThread:
1078         {
1079             SERVER_START_REQ(get_thread_info)
1080             {
1081                 req->handle = wine_server_obj_handle( handle );
1082                 req->tid_in = 0;
1083                 status = wine_server_call( req );
1084                 if (status == STATUS_SUCCESS)
1085                 {
1086                     BOOLEAN last = reply->last;
1087                     if (data) memcpy( data, &last, min( length, sizeof(last) ));
1088                     if (ret_len) *ret_len = min( length, sizeof(last) );
1089                 }
1090             }
1091             SERVER_END_REQ;
1092             return status;
1093         }
1094     case ThreadPriority:
1095     case ThreadBasePriority:
1096     case ThreadImpersonationToken:
1097     case ThreadEnableAlignmentFaultFixup:
1098     case ThreadEventPair_Reusable:
1099     case ThreadQuerySetWin32StartAddress:
1100     case ThreadZeroTlsCell:
1101     case ThreadPerformanceCount:
1102     case ThreadIdealProcessor:
1103     case ThreadPriorityBoost:
1104     case ThreadSetTlsArrayAddress:
1105     case ThreadIsIoPending:
1106     default:
1107         FIXME( "info class %d not supported yet\n", class );
1108         return STATUS_NOT_IMPLEMENTED;
1109     }
1110 }
1111
1112
1113 /******************************************************************************
1114  *              NtSetInformationThread  (NTDLL.@)
1115  *              ZwSetInformationThread  (NTDLL.@)
1116  */
1117 NTSTATUS WINAPI NtSetInformationThread( HANDLE handle, THREADINFOCLASS class,
1118                                         LPCVOID data, ULONG length )
1119 {
1120     NTSTATUS status;
1121     switch(class)
1122     {
1123     case ThreadZeroTlsCell:
1124         if (handle == GetCurrentThread())
1125         {
1126             LIST_ENTRY *entry;
1127             DWORD index;
1128
1129             if (length != sizeof(DWORD)) return STATUS_INVALID_PARAMETER;
1130             index = *(const DWORD *)data;
1131             if (index < TLS_MINIMUM_AVAILABLE)
1132             {
1133                 RtlAcquirePebLock();
1134                 for (entry = tls_links.Flink; entry != &tls_links; entry = entry->Flink)
1135                 {
1136                     TEB *teb = CONTAINING_RECORD(entry, TEB, TlsLinks);
1137                     teb->TlsSlots[index] = 0;
1138                 }
1139                 RtlReleasePebLock();
1140             }
1141             else
1142             {
1143                 index -= TLS_MINIMUM_AVAILABLE;
1144                 if (index >= 8 * sizeof(NtCurrentTeb()->Peb->TlsExpansionBitmapBits))
1145                     return STATUS_INVALID_PARAMETER;
1146                 RtlAcquirePebLock();
1147                 for (entry = tls_links.Flink; entry != &tls_links; entry = entry->Flink)
1148                 {
1149                     TEB *teb = CONTAINING_RECORD(entry, TEB, TlsLinks);
1150                     if (teb->TlsExpansionSlots) teb->TlsExpansionSlots[index] = 0;
1151                 }
1152                 RtlReleasePebLock();
1153             }
1154             return STATUS_SUCCESS;
1155         }
1156         FIXME( "ZeroTlsCell not supported on other threads\n" );
1157         return STATUS_NOT_IMPLEMENTED;
1158
1159     case ThreadImpersonationToken:
1160         {
1161             const HANDLE *phToken = data;
1162             if (length != sizeof(HANDLE)) return STATUS_INVALID_PARAMETER;
1163             TRACE("Setting ThreadImpersonationToken handle to %p\n", *phToken );
1164             SERVER_START_REQ( set_thread_info )
1165             {
1166                 req->handle   = wine_server_obj_handle( handle );
1167                 req->token    = wine_server_obj_handle( *phToken );
1168                 req->mask     = SET_THREAD_INFO_TOKEN;
1169                 status = wine_server_call( req );
1170             }
1171             SERVER_END_REQ;
1172         }
1173         return status;
1174     case ThreadBasePriority:
1175         {
1176             const DWORD *pprio = data;
1177             if (length != sizeof(DWORD)) return STATUS_INVALID_PARAMETER;
1178             SERVER_START_REQ( set_thread_info )
1179             {
1180                 req->handle   = wine_server_obj_handle( handle );
1181                 req->priority = *pprio;
1182                 req->mask     = SET_THREAD_INFO_PRIORITY;
1183                 status = wine_server_call( req );
1184             }
1185             SERVER_END_REQ;
1186         }
1187         return status;
1188     case ThreadAffinityMask:
1189         {
1190             const ULONG_PTR affinity_mask = ((ULONG_PTR)1 << NtCurrentTeb()->Peb->NumberOfProcessors) - 1;
1191             const ULONG_PTR *paff = data;
1192             if (length != sizeof(ULONG_PTR)) return STATUS_INVALID_PARAMETER;
1193             if (*paff & ~affinity_mask) return STATUS_INVALID_PARAMETER;
1194             SERVER_START_REQ( set_thread_info )
1195             {
1196                 req->handle   = wine_server_obj_handle( handle );
1197                 req->affinity = *paff;
1198                 req->mask     = SET_THREAD_INFO_AFFINITY;
1199                 status = wine_server_call( req );
1200             }
1201             SERVER_END_REQ;
1202         }
1203         return status;
1204     case ThreadBasicInformation:
1205     case ThreadTimes:
1206     case ThreadPriority:
1207     case ThreadDescriptorTableEntry:
1208     case ThreadEnableAlignmentFaultFixup:
1209     case ThreadEventPair_Reusable:
1210     case ThreadQuerySetWin32StartAddress:
1211     case ThreadPerformanceCount:
1212     case ThreadAmILastThread:
1213     case ThreadIdealProcessor:
1214     case ThreadPriorityBoost:
1215     case ThreadSetTlsArrayAddress:
1216     case ThreadIsIoPending:
1217     default:
1218         FIXME( "info class %d not supported yet\n", class );
1219         return STATUS_NOT_IMPLEMENTED;
1220     }
1221 }