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d3dx9/tests: Avoid SIZE_T in traces.
[wine.git] / dlls / ntdll / server.c
blobc02a12ab19aa2c68a9ff5b8d725c0f9aea105dd5
1 /*
2 * Wine server communication
3 *
4 * Copyright (C) 1998 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 <ctype.h>
26 #ifdef HAVE_DIRENT_H
27 # include <dirent.h>
28 #endif
29 #include <errno.h>
30 #include <fcntl.h>
31 #ifdef HAVE_LWP_H
32 #include <lwp.h>
33 #endif
34 #ifdef HAVE_PTHREAD_NP_H
35 # include <pthread_np.h>
36 #endif
37 #include <signal.h>
38 #include <stdarg.h>
39 #include <stdio.h>
40 #include <string.h>
41 #include <sys/types.h>
42 #ifdef HAVE_SYS_SOCKET_H
43 # include <sys/socket.h>
44 #endif
45 #ifdef HAVE_SYS_WAIT_H
46 #include <sys/wait.h>
47 #endif
48 #ifdef HAVE_SYS_UN_H
49 #include <sys/un.h>
50 #endif
51 #ifdef HAVE_SYS_MMAN_H
52 #include <sys/mman.h>
53 #endif
54 #ifdef HAVE_SYS_PRCTL_H
55 # include <sys/prctl.h>
56 #endif
57 #ifdef HAVE_SYS_STAT_H
58 # include <sys/stat.h>
59 #endif
60 #ifdef HAVE_SYS_SYSCALL_H
61 # include <sys/syscall.h>
62 #endif
63 #ifdef HAVE_SYS_UIO_H
64 #include <sys/uio.h>
65 #endif
66 #ifdef HAVE_SYS_UCONTEXT_H
67 # include <sys/ucontext.h>
68 #endif
69 #ifdef HAVE_SYS_THR_H
70 #include <sys/thr.h>
71 #endif
72 #ifdef HAVE_UNISTD_H
73 # include <unistd.h>
74 #endif
75
76 #include "ntstatus.h"
77 #define WIN32_NO_STATUS
78 #include "windef.h"
79 #include "winnt.h"
80 #include "wine/library.h"
81 #include "wine/server.h"
82 #include "wine/debug.h"
83 #include "ntdll_misc.h"
84
85 WINE_DEFAULT_DEBUG_CHANNEL(server);
86
87 /* Some versions of glibc don't define this */
88 #ifndef SCM_RIGHTS
89 #define SCM_RIGHTS 1
90 #endif
91
92 #ifndef MSG_CMSG_CLOEXEC
93 #define MSG_CMSG_CLOEXEC 0
94 #endif
95
96 #define SOCKETNAME "socket" /* name of the socket file */
97 #define LOCKNAME "lock" /* name of the lock file */
98
99 #ifdef __i386__
100 static const enum cpu_type client_cpu = CPU_x86;
101 #elif defined(__x86_64__)
102 static const enum cpu_type client_cpu = CPU_x86_64;
103 #elif defined(__powerpc__)
104 static const enum cpu_type client_cpu = CPU_POWERPC;
105 #elif defined(__arm__)
106 static const enum cpu_type client_cpu = CPU_ARM;
107 #elif defined(__aarch64__)
108 static const enum cpu_type client_cpu = CPU_ARM64;
109 #else
110 #error Unsupported CPU
111 #endif
112
113 unsigned int server_cpus = 0;
114 BOOL is_wow64 = FALSE;
115
116 timeout_t server_start_time = 0; /* time of server startup */
117
118 sigset_t server_block_set; /* signals to block during server calls */
119 static int fd_socket = -1; /* socket to exchange file descriptors with the server */
120 static pid_t server_pid;
121
122 static RTL_CRITICAL_SECTION fd_cache_section;
123 static RTL_CRITICAL_SECTION_DEBUG critsect_debug =
124 {
125 0, 0, &fd_cache_section,
126 { &critsect_debug.ProcessLocksList, &critsect_debug.ProcessLocksList },
127 0, 0, { (DWORD_PTR)(__FILE__ ": fd_cache_section") }
128 };
129 static RTL_CRITICAL_SECTION fd_cache_section = { &critsect_debug, -1, 0, 0, 0, 0 };
130
131 /* atomically exchange a 64-bit value */
132 static inline LONG64 interlocked_xchg64( LONG64 *dest, LONG64 val )
133 {
134 #ifdef _WIN64
135 return (LONG64)interlocked_xchg_ptr( (void **)dest, (void *)val );
136 #else
137 LONG64 tmp = *dest;
138 while (interlocked_cmpxchg64( dest, val, tmp ) != tmp) tmp = *dest;
139 return tmp;
140 #endif
141 }
142
143 #ifdef __GNUC__
144 static void fatal_error( const char *err, ... ) __attribute__((noreturn, format(printf,1,2)));
145 static void fatal_perror( const char *err, ... ) __attribute__((noreturn, format(printf,1,2)));
146 static void server_connect_error( const char *serverdir ) __attribute__((noreturn));
147 #endif
148
149 /* die on a fatal error; use only during initialization */
150 static void fatal_error( const char *err, ... )
151 {
152 va_list args;
153
154 va_start( args, err );
155 fprintf( stderr, "wine: " );
156 vfprintf( stderr, err, args );
157 va_end( args );
158 exit(1);
159 }
160
161 /* die on a fatal error; use only during initialization */
162 static void fatal_perror( const char *err, ... )
163 {
164 va_list args;
165
166 va_start( args, err );
167 fprintf( stderr, "wine: " );
168 vfprintf( stderr, err, args );
169 perror( " " );
170 va_end( args );
171 exit(1);
172 }
173
174
175 /***********************************************************************
176 * server_protocol_error
177 */
178 static DECLSPEC_NORETURN void server_protocol_error( const char *err, ... )
179 {
180 va_list args;
181
182 va_start( args, err );
183 fprintf( stderr, "wine client error:%x: ", GetCurrentThreadId() );
184 vfprintf( stderr, err, args );
185 va_end( args );
186 abort_thread(1);
187 }
188
189
190 /***********************************************************************
191 * server_protocol_perror
192 */
193 static DECLSPEC_NORETURN void server_protocol_perror( const char *err )
194 {
195 fprintf( stderr, "wine client error:%x: ", GetCurrentThreadId() );
196 perror( err );
197 abort_thread(1);
198 }
199
200
201 /***********************************************************************
202 * send_request
203 *
204 * Send a request to the server.
205 */
206 static unsigned int send_request( const struct __server_request_info *req )
207 {
208 unsigned int i;
209 int ret;
210
211 if (!req->u.req.request_header.request_size)
212 {
213 if ((ret = write( ntdll_get_thread_data()->request_fd, &req->u.req,
214 sizeof(req->u.req) )) == sizeof(req->u.req)) return STATUS_SUCCESS;
215
216 }
217 else
218 {
219 struct iovec vec[__SERVER_MAX_DATA+1];
220
221 vec[0].iov_base = (void *)&req->u.req;
222 vec[0].iov_len = sizeof(req->u.req);
223 for (i = 0; i < req->data_count; i++)
224 {
225 vec[i+1].iov_base = (void *)req->data[i].ptr;
226 vec[i+1].iov_len = req->data[i].size;
227 }
228 if ((ret = writev( ntdll_get_thread_data()->request_fd, vec, i+1 )) ==
229 req->u.req.request_header.request_size + sizeof(req->u.req)) return STATUS_SUCCESS;
230 }
231
232 if (ret >= 0) server_protocol_error( "partial write %d\n", ret );
233 if (errno == EPIPE) abort_thread(0);
234 if (errno == EFAULT) return STATUS_ACCESS_VIOLATION;
235 server_protocol_perror( "write" );
236 }
237
238
239 /***********************************************************************
240 * read_reply_data
241 *
242 * Read data from the reply buffer; helper for wait_reply.
243 */
244 static void read_reply_data( void *buffer, size_t size )
245 {
246 int ret;
247
248 for (;;)
249 {
250 if ((ret = read( ntdll_get_thread_data()->reply_fd, buffer, size )) > 0)
251 {
252 if (!(size -= ret)) return;
253 buffer = (char *)buffer + ret;
254 continue;
255 }
256 if (!ret) break;
257 if (errno == EINTR) continue;
258 if (errno == EPIPE) break;
259 server_protocol_perror("read");
260 }
261 /* the server closed the connection; time to die... */
262 abort_thread(0);
263 }
264
265
266 /***********************************************************************
267 * wait_reply
268 *
269 * Wait for a reply from the server.
270 */
271 static inline unsigned int wait_reply( struct __server_request_info *req )
272 {
273 read_reply_data( &req->u.reply, sizeof(req->u.reply) );
274 if (req->u.reply.reply_header.reply_size)
275 read_reply_data( req->reply_data, req->u.reply.reply_header.reply_size );
276 return req->u.reply.reply_header.error;
277 }
278
279
280 /***********************************************************************
281 * wine_server_call (NTDLL.@)
282 *
283 * Perform a server call.
284 *
285 * PARAMS
286 * req_ptr [I/O] Function dependent data
287 *
288 * RETURNS
289 * Depends on server function being called, but usually an NTSTATUS code.
290 *
291 * NOTES
292 * Use the SERVER_START_REQ and SERVER_END_REQ to help you fill out the
293 * server request structure for the particular call. E.g:
294 *| SERVER_START_REQ( event_op )
295 *| {
296 *| req->handle = handle;
297 *| req->op = SET_EVENT;
298 *| ret = wine_server_call( req );
299 *| }
300 *| SERVER_END_REQ;
301 */
302 unsigned int wine_server_call( void *req_ptr )
303 {
304 struct __server_request_info * const req = req_ptr;
305 sigset_t old_set;
306 unsigned int ret;
307
308 pthread_sigmask( SIG_BLOCK, &server_block_set, &old_set );
309 ret = send_request( req );
310 if (!ret) ret = wait_reply( req );
311 pthread_sigmask( SIG_SETMASK, &old_set, NULL );
312 return ret;
313 }
314
315
316 /***********************************************************************
317 * server_enter_uninterrupted_section
318 */
319 void server_enter_uninterrupted_section( RTL_CRITICAL_SECTION *cs, sigset_t *sigset )
320 {
321 pthread_sigmask( SIG_BLOCK, &server_block_set, sigset );
322 RtlEnterCriticalSection( cs );
323 }
324
325
326 /***********************************************************************
327 * server_leave_uninterrupted_section
328 */
329 void server_leave_uninterrupted_section( RTL_CRITICAL_SECTION *cs, sigset_t *sigset )
330 {
331 RtlLeaveCriticalSection( cs );
332 pthread_sigmask( SIG_SETMASK, sigset, NULL );
333 }
334
335
336 /***********************************************************************
337 * wait_select_reply
338 *
339 * Wait for a reply on the waiting pipe of the current thread.
340 */
341 static int wait_select_reply( void *cookie )
342 {
343 int signaled;
344 struct wake_up_reply reply;
345 for (;;)
346 {
347 int ret;
348 ret = read( ntdll_get_thread_data()->wait_fd[0], &reply, sizeof(reply) );
349 if (ret == sizeof(reply))
350 {
351 if (!reply.cookie) abort_thread( reply.signaled ); /* thread got killed */
352 if (wine_server_get_ptr(reply.cookie) == cookie) return reply.signaled;
353 /* we stole another reply, wait for the real one */
354 signaled = wait_select_reply( cookie );
355 /* and now put the wrong one back in the pipe */
356 for (;;)
357 {
358 ret = write( ntdll_get_thread_data()->wait_fd[1], &reply, sizeof(reply) );
359 if (ret == sizeof(reply)) break;
360 if (ret >= 0) server_protocol_error( "partial wakeup write %d\n", ret );
361 if (errno == EINTR) continue;
362 server_protocol_perror("wakeup write");
363 }
364 return signaled;
365 }
366 if (ret >= 0) server_protocol_error( "partial wakeup read %d\n", ret );
367 if (errno == EINTR) continue;
368 server_protocol_perror("wakeup read");
369 }
370 }
371
372
373 /***********************************************************************
374 * invoke_apc
375 *
376 * Invoke a single APC. Return TRUE if a user APC has been run.
377 */
378 static BOOL invoke_apc( const apc_call_t *call, apc_result_t *result )
379 {
380 BOOL user_apc = FALSE;
381 SIZE_T size;
382 void *addr;
383
384 memset( result, 0, sizeof(*result) );
385
386 switch (call->type)
387 {
388 case APC_NONE:
389 break;
390 case APC_USER:
391 {
392 void (WINAPI *func)(ULONG_PTR,ULONG_PTR,ULONG_PTR) = wine_server_get_ptr( call->user.func );
393 func( call->user.args[0], call->user.args[1], call->user.args[2] );
394 user_apc = TRUE;
395 break;
396 }
397 case APC_TIMER:
398 {
399 void (WINAPI *func)(void*, unsigned int, unsigned int) = wine_server_get_ptr( call->timer.func );
400 func( wine_server_get_ptr( call->timer.arg ),
401 (DWORD)call->timer.time, (DWORD)(call->timer.time >> 32) );
402 user_apc = TRUE;
403 break;
404 }
405 case APC_ASYNC_IO:
406 {
407 IO_STATUS_BLOCK *iosb = wine_server_get_ptr( call->async_io.sb );
408 NTSTATUS (**user)(void *, IO_STATUS_BLOCK *, NTSTATUS) = wine_server_get_ptr( call->async_io.user );
409 result->type = call->type;
410 result->async_io.status = (*user)( user, iosb, call->async_io.status );
411 if (result->async_io.status != STATUS_PENDING)
412 result->async_io.total = iosb->Information;
413 break;
414 }
415 case APC_VIRTUAL_ALLOC:
416 result->type = call->type;
417 addr = wine_server_get_ptr( call->virtual_alloc.addr );
418 size = call->virtual_alloc.size;
419 if ((ULONG_PTR)addr == call->virtual_alloc.addr && size == call->virtual_alloc.size)
420 {
421 result->virtual_alloc.status = NtAllocateVirtualMemory( NtCurrentProcess(), &addr,
422 call->virtual_alloc.zero_bits, &size,
423 call->virtual_alloc.op_type,
424 call->virtual_alloc.prot );
425 result->virtual_alloc.addr = wine_server_client_ptr( addr );
426 result->virtual_alloc.size = size;
427 }
428 else result->virtual_alloc.status = STATUS_WORKING_SET_LIMIT_RANGE;
429 break;
430 case APC_VIRTUAL_FREE:
431 result->type = call->type;
432 addr = wine_server_get_ptr( call->virtual_free.addr );
433 size = call->virtual_free.size;
434 if ((ULONG_PTR)addr == call->virtual_free.addr && size == call->virtual_free.size)
435 {
436 result->virtual_free.status = NtFreeVirtualMemory( NtCurrentProcess(), &addr, &size,
437 call->virtual_free.op_type );
438 result->virtual_free.addr = wine_server_client_ptr( addr );
439 result->virtual_free.size = size;
440 }
441 else result->virtual_free.status = STATUS_INVALID_PARAMETER;
442 break;
443 case APC_VIRTUAL_QUERY:
444 {
445 MEMORY_BASIC_INFORMATION info;
446 result->type = call->type;
447 addr = wine_server_get_ptr( call->virtual_query.addr );
448 if ((ULONG_PTR)addr == call->virtual_query.addr)
449 result->virtual_query.status = NtQueryVirtualMemory( NtCurrentProcess(),
450 addr, MemoryBasicInformation, &info,
451 sizeof(info), NULL );
452 else
453 result->virtual_query.status = STATUS_WORKING_SET_LIMIT_RANGE;
454
455 if (result->virtual_query.status == STATUS_SUCCESS)
456 {
457 result->virtual_query.base = wine_server_client_ptr( info.BaseAddress );
458 result->virtual_query.alloc_base = wine_server_client_ptr( info.AllocationBase );
459 result->virtual_query.size = info.RegionSize;
460 result->virtual_query.prot = info.Protect;
461 result->virtual_query.alloc_prot = info.AllocationProtect;
462 result->virtual_query.state = info.State >> 12;
463 result->virtual_query.alloc_type = info.Type >> 16;
464 }
465 break;
466 }
467 case APC_VIRTUAL_PROTECT:
468 result->type = call->type;
469 addr = wine_server_get_ptr( call->virtual_protect.addr );
470 size = call->virtual_protect.size;
471 if ((ULONG_PTR)addr == call->virtual_protect.addr && size == call->virtual_protect.size)
472 {
473 result->virtual_protect.status = NtProtectVirtualMemory( NtCurrentProcess(), &addr, &size,
474 call->virtual_protect.prot,
475 &result->virtual_protect.prot );
476 result->virtual_protect.addr = wine_server_client_ptr( addr );
477 result->virtual_protect.size = size;
478 }
479 else result->virtual_protect.status = STATUS_INVALID_PARAMETER;
480 break;
481 case APC_VIRTUAL_FLUSH:
482 result->type = call->type;
483 addr = wine_server_get_ptr( call->virtual_flush.addr );
484 size = call->virtual_flush.size;
485 if ((ULONG_PTR)addr == call->virtual_flush.addr && size == call->virtual_flush.size)
486 {
487 result->virtual_flush.status = NtFlushVirtualMemory( NtCurrentProcess(),
488 (const void **)&addr, &size, 0 );
489 result->virtual_flush.addr = wine_server_client_ptr( addr );
490 result->virtual_flush.size = size;
491 }
492 else result->virtual_flush.status = STATUS_INVALID_PARAMETER;
493 break;
494 case APC_VIRTUAL_LOCK:
495 result->type = call->type;
496 addr = wine_server_get_ptr( call->virtual_lock.addr );
497 size = call->virtual_lock.size;
498 if ((ULONG_PTR)addr == call->virtual_lock.addr && size == call->virtual_lock.size)
499 {
500 result->virtual_lock.status = NtLockVirtualMemory( NtCurrentProcess(), &addr, &size, 0 );
501 result->virtual_lock.addr = wine_server_client_ptr( addr );
502 result->virtual_lock.size = size;
503 }
504 else result->virtual_lock.status = STATUS_INVALID_PARAMETER;
505 break;
506 case APC_VIRTUAL_UNLOCK:
507 result->type = call->type;
508 addr = wine_server_get_ptr( call->virtual_unlock.addr );
509 size = call->virtual_unlock.size;
510 if ((ULONG_PTR)addr == call->virtual_unlock.addr && size == call->virtual_unlock.size)
511 {
512 result->virtual_unlock.status = NtUnlockVirtualMemory( NtCurrentProcess(), &addr, &size, 0 );
513 result->virtual_unlock.addr = wine_server_client_ptr( addr );
514 result->virtual_unlock.size = size;
515 }
516 else result->virtual_unlock.status = STATUS_INVALID_PARAMETER;
517 break;
518 case APC_MAP_VIEW:
519 result->type = call->type;
520 addr = wine_server_get_ptr( call->map_view.addr );
521 size = call->map_view.size;
522 if ((ULONG_PTR)addr == call->map_view.addr && size == call->map_view.size)
523 {
524 LARGE_INTEGER offset;
525 offset.QuadPart = call->map_view.offset;
526 result->map_view.status = NtMapViewOfSection( wine_server_ptr_handle(call->map_view.handle),
527 NtCurrentProcess(), &addr,
528 call->map_view.zero_bits, 0,
529 &offset, &size, ViewShare,
530 call->map_view.alloc_type, call->map_view.prot );
531 result->map_view.addr = wine_server_client_ptr( addr );
532 result->map_view.size = size;
533 }
534 else result->map_view.status = STATUS_INVALID_PARAMETER;
535 NtClose( wine_server_ptr_handle(call->map_view.handle) );
536 break;
537 case APC_UNMAP_VIEW:
538 result->type = call->type;
539 addr = wine_server_get_ptr( call->unmap_view.addr );
540 if ((ULONG_PTR)addr == call->unmap_view.addr)
541 result->unmap_view.status = NtUnmapViewOfSection( NtCurrentProcess(), addr );
542 else
543 result->unmap_view.status = STATUS_INVALID_PARAMETER;
544 break;
545 case APC_CREATE_THREAD:
546 {
547 CLIENT_ID id;
548 HANDLE handle;
549 SIZE_T reserve = call->create_thread.reserve;
550 SIZE_T commit = call->create_thread.commit;
551 void *func = wine_server_get_ptr( call->create_thread.func );
552 void *arg = wine_server_get_ptr( call->create_thread.arg );
553
554 result->type = call->type;
555 if (reserve == call->create_thread.reserve && commit == call->create_thread.commit &&
556 (ULONG_PTR)func == call->create_thread.func && (ULONG_PTR)arg == call->create_thread.arg)
557 {
558 result->create_thread.status = RtlCreateUserThread( NtCurrentProcess(), NULL,
559 call->create_thread.suspend, NULL,
560 reserve, commit, func, arg, &handle, &id );
561 result->create_thread.handle = wine_server_obj_handle( handle );
562 result->create_thread.tid = HandleToULong(id.UniqueThread);
563 }
564 else result->create_thread.status = STATUS_INVALID_PARAMETER;
565 break;
566 }
567 default:
568 server_protocol_error( "get_apc_request: bad type %d\n", call->type );
569 break;
570 }
571 return user_apc;
572 }
573
574
575 /***********************************************************************
576 * server_select
577 */
578 unsigned int server_select( const select_op_t *select_op, data_size_t size, UINT flags,
579 const LARGE_INTEGER *timeout )
580 {
581 unsigned int ret;
582 int cookie;
583 BOOL user_apc = FALSE;
584 obj_handle_t apc_handle = 0;
585 apc_call_t call;
586 apc_result_t result;
587 timeout_t abs_timeout = timeout ? timeout->QuadPart : TIMEOUT_INFINITE;
588
589 memset( &result, 0, sizeof(result) );
590
591 for (;;)
592 {
593 SERVER_START_REQ( select )
594 {
595 req->flags = flags;
596 req->cookie = wine_server_client_ptr( &cookie );
597 req->prev_apc = apc_handle;
598 req->timeout = abs_timeout;
599 wine_server_add_data( req, &result, sizeof(result) );
600 wine_server_add_data( req, select_op, size );
601 ret = wine_server_call( req );
602 abs_timeout = reply->timeout;
603 apc_handle = reply->apc_handle;
604 call = reply->call;
605 }
606 SERVER_END_REQ;
607 if (ret == STATUS_PENDING) ret = wait_select_reply( &cookie );
608 if (ret != STATUS_USER_APC) break;
609 if (invoke_apc( &call, &result ))
610 {
611 /* if we ran a user apc we have to check once more if additional apcs are queued,
612 * but we don't want to wait */
613 abs_timeout = 0;
614 user_apc = TRUE;
615 size = 0;
616 }
617
618 /* don't signal multiple times */
619 if (size >= sizeof(select_op->signal_and_wait) && select_op->op == SELECT_SIGNAL_AND_WAIT)
620 size = offsetof( select_op_t, signal_and_wait.signal );
621 }
622
623 if (ret == STATUS_TIMEOUT && user_apc) ret = STATUS_USER_APC;
624
625 /* A test on Windows 2000 shows that Windows always yields during
626 a wait, but a wait that is hit by an event gets a priority
627 boost as well. This seems to model that behavior the closest. */
628 if (ret == STATUS_TIMEOUT) NtYieldExecution();
629
630 return ret;
631 }
632
633
634 /***********************************************************************
635 * server_queue_process_apc
636 */
637 unsigned int server_queue_process_apc( HANDLE process, const apc_call_t *call, apc_result_t *result )
638 {
639 for (;;)
640 {
641 unsigned int ret;
642 HANDLE handle = 0;
643 BOOL self = FALSE;
644
645 SERVER_START_REQ( queue_apc )
646 {
647 req->handle = wine_server_obj_handle( process );
648 req->call = *call;
649 if (!(ret = wine_server_call( req )))
650 {
651 handle = wine_server_ptr_handle( reply->handle );
652 self = reply->self;
653 }
654 }
655 SERVER_END_REQ;
656 if (ret != STATUS_SUCCESS) return ret;
657
658 if (self)
659 {
660 invoke_apc( call, result );
661 }
662 else
663 {
664 NtWaitForSingleObject( handle, FALSE, NULL );
665
666 SERVER_START_REQ( get_apc_result )
667 {
668 req->handle = wine_server_obj_handle( handle );
669 if (!(ret = wine_server_call( req ))) *result = reply->result;
670 }
671 SERVER_END_REQ;
672
673 if (!ret && result->type == APC_NONE) continue; /* APC didn't run, try again */
674 }
675 return ret;
676 }
677 }
678
679
680 /***********************************************************************
681 * wine_server_send_fd (NTDLL.@)
682 *
683 * Send a file descriptor to the server.
684 *
685 * PARAMS
686 * fd [I] file descriptor to send
687 *
688 * RETURNS
689 * nothing
690 */
691 void CDECL wine_server_send_fd( int fd )
692 {
693 struct send_fd data;
694 struct msghdr msghdr;
695 struct iovec vec;
696 int ret;
697
698 #ifdef HAVE_STRUCT_MSGHDR_MSG_ACCRIGHTS
699 msghdr.msg_accrights = (void *)&fd;
700 msghdr.msg_accrightslen = sizeof(fd);
701 #else /* HAVE_STRUCT_MSGHDR_MSG_ACCRIGHTS */
702 char cmsg_buffer[256];
703 struct cmsghdr *cmsg;
704 msghdr.msg_control = cmsg_buffer;
705 msghdr.msg_controllen = sizeof(cmsg_buffer);
706 msghdr.msg_flags = 0;
707 cmsg = CMSG_FIRSTHDR( &msghdr );
708 cmsg->cmsg_len = CMSG_LEN( sizeof(fd) );
709 cmsg->cmsg_level = SOL_SOCKET;
710 cmsg->cmsg_type = SCM_RIGHTS;
711 *(int *)CMSG_DATA(cmsg) = fd;
712 msghdr.msg_controllen = cmsg->cmsg_len;
713 #endif /* HAVE_STRUCT_MSGHDR_MSG_ACCRIGHTS */
714
715 msghdr.msg_name = NULL;
716 msghdr.msg_namelen = 0;
717 msghdr.msg_iov = &vec;
718 msghdr.msg_iovlen = 1;
719
720 vec.iov_base = (void *)&data;
721 vec.iov_len = sizeof(data);
722
723 data.tid = GetCurrentThreadId();
724 data.fd = fd;
725
726 for (;;)
727 {
728 if ((ret = sendmsg( fd_socket, &msghdr, 0 )) == sizeof(data)) return;
729 if (ret >= 0) server_protocol_error( "partial write %d\n", ret );
730 if (errno == EINTR) continue;
731 if (errno == EPIPE) abort_thread(0);
732 server_protocol_perror( "sendmsg" );
733 }
734 }
735
736
737 /***********************************************************************
738 * receive_fd
739 *
740 * Receive a file descriptor passed from the server.
741 */
742 static int receive_fd( obj_handle_t *handle )
743 {
744 struct iovec vec;
745 struct msghdr msghdr;
746 int ret, fd = -1;
747
748 #ifdef HAVE_STRUCT_MSGHDR_MSG_ACCRIGHTS
749 msghdr.msg_accrights = (void *)&fd;
750 msghdr.msg_accrightslen = sizeof(fd);
751 #else /* HAVE_STRUCT_MSGHDR_MSG_ACCRIGHTS */
752 char cmsg_buffer[256];
753 msghdr.msg_control = cmsg_buffer;
754 msghdr.msg_controllen = sizeof(cmsg_buffer);
755 msghdr.msg_flags = 0;
756 #endif /* HAVE_STRUCT_MSGHDR_MSG_ACCRIGHTS */
757
758 msghdr.msg_name = NULL;
759 msghdr.msg_namelen = 0;
760 msghdr.msg_iov = &vec;
761 msghdr.msg_iovlen = 1;
762 vec.iov_base = (void *)handle;
763 vec.iov_len = sizeof(*handle);
764
765 for (;;)
766 {
767 if ((ret = recvmsg( fd_socket, &msghdr, MSG_CMSG_CLOEXEC )) > 0)
768 {
769 #ifndef HAVE_STRUCT_MSGHDR_MSG_ACCRIGHTS
770 struct cmsghdr *cmsg;
771 for (cmsg = CMSG_FIRSTHDR( &msghdr ); cmsg; cmsg = CMSG_NXTHDR( &msghdr, cmsg ))
772 {
773 if (cmsg->cmsg_level != SOL_SOCKET) continue;
774 if (cmsg->cmsg_type == SCM_RIGHTS) fd = *(int *)CMSG_DATA(cmsg);
775 #ifdef SCM_CREDENTIALS
776 else if (cmsg->cmsg_type == SCM_CREDENTIALS)
777 {
778 struct ucred *ucred = (struct ucred *)CMSG_DATA(cmsg);
779 server_pid = ucred->pid;
780 }
781 #endif
782 }
783 #endif /* HAVE_STRUCT_MSGHDR_MSG_ACCRIGHTS */
784 if (fd != -1) fcntl( fd, F_SETFD, FD_CLOEXEC ); /* in case MSG_CMSG_CLOEXEC is not supported */
785 return fd;
786 }
787 if (!ret) break;
788 if (errno == EINTR) continue;
789 if (errno == EPIPE) break;
790 server_protocol_perror("recvmsg");
791 }
792 /* the server closed the connection; time to die... */
793 abort_thread(0);
794 }
795
796
797 /***********************************************************************/
798 /* fd cache support */
799
800 #include "pshpack1.h"
801 union fd_cache_entry
802 {
803 LONG64 data;
804 struct
805 {
806 int fd;
807 enum server_fd_type type : 5;
808 unsigned int access : 3;
809 unsigned int options : 24;
810 } s;
811 };
812 #include "poppack.h"
813
814 C_ASSERT( sizeof(union fd_cache_entry) == sizeof(LONG64) );
815
816 #define FD_CACHE_BLOCK_SIZE (65536 / sizeof(union fd_cache_entry))
817 #define FD_CACHE_ENTRIES 128
818
819 static union fd_cache_entry *fd_cache[FD_CACHE_ENTRIES];
820 static union fd_cache_entry fd_cache_initial_block[FD_CACHE_BLOCK_SIZE];
821
822 static inline unsigned int handle_to_index( HANDLE handle, unsigned int *entry )
823 {
824 unsigned int idx = (wine_server_obj_handle(handle) >> 2) - 1;
825 *entry = idx / FD_CACHE_BLOCK_SIZE;
826 return idx % FD_CACHE_BLOCK_SIZE;
827 }
828
829
830 /***********************************************************************
831 * add_fd_to_cache
832 *
833 * Caller must hold fd_cache_section.
834 */
835 static BOOL add_fd_to_cache( HANDLE handle, int fd, enum server_fd_type type,
836 unsigned int access, unsigned int options )
837 {
838 unsigned int entry, idx = handle_to_index( handle, &entry );
839 union fd_cache_entry cache;
840
841 if (entry >= FD_CACHE_ENTRIES)
842 {
843 FIXME( "too many allocated handles, not caching %p\n", handle );
844 return FALSE;
845 }
846
847 if (!fd_cache[entry]) /* do we need to allocate a new block of entries? */
848 {
849 if (!entry) fd_cache[0] = fd_cache_initial_block;
850 else
851 {
852 void *ptr = wine_anon_mmap( NULL, FD_CACHE_BLOCK_SIZE * sizeof(union fd_cache_entry),
853 PROT_READ | PROT_WRITE, 0 );
854 if (ptr == MAP_FAILED) return FALSE;
855 fd_cache[entry] = ptr;
856 }
857 }
858
859 /* store fd+1 so that 0 can be used as the unset value */
860 cache.s.fd = fd + 1;
861 cache.s.type = type;
862 cache.s.access = access;
863 cache.s.options = options;
864 cache.data = interlocked_xchg64( &fd_cache[entry][idx].data, cache.data );
865 assert( !cache.s.fd );
866 return TRUE;
867 }
868
869
870 /***********************************************************************
871 * get_cached_fd
872 */
873 static inline NTSTATUS get_cached_fd( HANDLE handle, int *fd, enum server_fd_type *type,
874 unsigned int *access, unsigned int *options )
875 {
876 unsigned int entry, idx = handle_to_index( handle, &entry );
877 union fd_cache_entry cache;
878
879 if (entry >= FD_CACHE_ENTRIES || !fd_cache[entry]) return STATUS_INVALID_HANDLE;
880
881 cache.data = interlocked_cmpxchg64( &fd_cache[entry][idx].data, 0, 0 );
882 if (!cache.data) return STATUS_INVALID_HANDLE;
883
884 /* if fd type is invalid, fd stores an error value */
885 if (cache.s.type == FD_TYPE_INVALID) return cache.s.fd - 1;
886
887 *fd = cache.s.fd - 1;
888 if (type) *type = cache.s.type;
889 if (access) *access = cache.s.access;
890 if (options) *options = cache.s.options;
891 return STATUS_SUCCESS;
892 }
893
894
895 /***********************************************************************
896 * server_remove_fd_from_cache
897 */
898 int server_remove_fd_from_cache( HANDLE handle )
899 {
900 unsigned int entry, idx = handle_to_index( handle, &entry );
901 int fd = -1;
902
903 if (entry < FD_CACHE_ENTRIES && fd_cache[entry])
904 {
905 union fd_cache_entry cache;
906 cache.data = interlocked_xchg64( &fd_cache[entry][idx].data, 0 );
907 if (cache.s.type != FD_TYPE_INVALID) fd = cache.s.fd - 1;
908 }
909
910 return fd;
911 }
912
913
914 /***********************************************************************
915 * server_get_unix_fd
916 *
917 * The returned unix_fd should be closed iff needs_close is non-zero.
918 */
919 int server_get_unix_fd( HANDLE handle, unsigned int wanted_access, int *unix_fd,
920 int *needs_close, enum server_fd_type *type, unsigned int *options )
921 {
922 sigset_t sigset;
923 obj_handle_t fd_handle;
924 int ret, fd = -1;
925 unsigned int access = 0;
926
927 *unix_fd = -1;
928 *needs_close = 0;
929 wanted_access &= FILE_READ_DATA | FILE_WRITE_DATA | FILE_APPEND_DATA;
930
931 ret = get_cached_fd( handle, &fd, type, &access, options );
932 if (ret != STATUS_INVALID_HANDLE) goto done;
933
934 server_enter_uninterrupted_section( &fd_cache_section, &sigset );
935 ret = get_cached_fd( handle, &fd, type, &access, options );
936 if (ret == STATUS_INVALID_HANDLE)
937 {
938 SERVER_START_REQ( get_handle_fd )
939 {
940 req->handle = wine_server_obj_handle( handle );
941 if (!(ret = wine_server_call( req )))
942 {
943 if (type) *type = reply->type;
944 if (options) *options = reply->options;
945 access = reply->access;
946 if ((fd = receive_fd( &fd_handle )) != -1)
947 {
948 assert( wine_server_ptr_handle(fd_handle) == handle );
949 *needs_close = (!reply->cacheable ||
950 !add_fd_to_cache( handle, fd, reply->type,
951 reply->access, reply->options ));
952 }
953 else ret = STATUS_TOO_MANY_OPENED_FILES;
954 }
955 else if (reply->cacheable)
956 {
957 add_fd_to_cache( handle, ret, FD_TYPE_INVALID, 0, 0 );
958 }
959 }
960 SERVER_END_REQ;
961 }
962 server_leave_uninterrupted_section( &fd_cache_section, &sigset );
963
964 done:
965 if (!ret && ((access & wanted_access) != wanted_access))
966 {
967 ret = STATUS_ACCESS_DENIED;
968 if (*needs_close) close( fd );
969 }
970 if (!ret) *unix_fd = fd;
971 return ret;
972 }
973
974
975 /***********************************************************************
976 * wine_server_fd_to_handle (NTDLL.@)
977 *
978 * Allocate a file handle for a Unix file descriptor.
979 *
980 * PARAMS
981 * fd [I] Unix file descriptor.
982 * access [I] Win32 access flags.
983 * attributes [I] Object attributes.
984 * handle [O] Address where Wine file handle will be stored.
985 *
986 * RETURNS
987 * NTSTATUS code
988 */
989 int CDECL wine_server_fd_to_handle( int fd, unsigned int access, unsigned int attributes, HANDLE *handle )
990 {
991 int ret;
992
993 *handle = 0;
994 wine_server_send_fd( fd );
995
996 SERVER_START_REQ( alloc_file_handle )
997 {
998 req->access = access;
999 req->attributes = attributes;
1000 req->fd = fd;
1001 if (!(ret = wine_server_call( req ))) *handle = wine_server_ptr_handle( reply->handle );
1002 }
1003 SERVER_END_REQ;
1004 return ret;
1005 }
1006
1007
1008 /***********************************************************************
1009 * wine_server_handle_to_fd (NTDLL.@)
1010 *
1011 * Retrieve the file descriptor corresponding to a file handle.
1012 *
1013 * PARAMS
1014 * handle [I] Wine file handle.
1015 * access [I] Win32 file access rights requested.
1016 * unix_fd [O] Address where Unix file descriptor will be stored.
1017 * options [O] Address where the file open options will be stored. Optional.
1018 *
1019 * RETURNS
1020 * NTSTATUS code
1021 */
1022 int CDECL wine_server_handle_to_fd( HANDLE handle, unsigned int access, int *unix_fd,
1023 unsigned int *options )
1024 {
1025 int needs_close, ret = server_get_unix_fd( handle, access, unix_fd, &needs_close, NULL, options );
1026
1027 if (!ret && !needs_close)
1028 {
1029 if ((*unix_fd = dup(*unix_fd)) == -1) ret = FILE_GetNtStatus();
1030 }
1031 return ret;
1032 }
1033
1034
1035 /***********************************************************************
1036 * wine_server_release_fd (NTDLL.@)
1037 *
1038 * Release the Unix file descriptor returned by wine_server_handle_to_fd.
1039 *
1040 * PARAMS
1041 * handle [I] Wine file handle.
1042 * unix_fd [I] Unix file descriptor to release.
1043 *
1044 * RETURNS
1045 * nothing
1046 */
1047 void CDECL wine_server_release_fd( HANDLE handle, int unix_fd )
1048 {
1049 close( unix_fd );
1050 }
1051
1052
1053 /***********************************************************************
1054 * server_pipe
1055 *
1056 * Create a pipe for communicating with the server.
1057 */
1058 int server_pipe( int fd[2] )
1059 {
1060 int ret;
1061 #ifdef HAVE_PIPE2
1062 static BOOL have_pipe2 = TRUE;
1063
1064 if (have_pipe2)
1065 {
1066 if (!(ret = pipe2( fd, O_CLOEXEC ))) return ret;
1067 if (errno == ENOSYS || errno == EINVAL) have_pipe2 = FALSE; /* don't try again */
1068 }
1069 #endif
1070 if (!(ret = pipe( fd )))
1071 {
1072 fcntl( fd[0], F_SETFD, FD_CLOEXEC );
1073 fcntl( fd[1], F_SETFD, FD_CLOEXEC );
1074 }
1075 return ret;
1076 }
1077
1078
1079 /***********************************************************************
1080 * start_server
1081 *
1082 * Start a new wine server.
1083 */
1084 static void start_server(void)
1085 {
1086 static BOOL started; /* we only try once */
1087 char *argv[3];
1088 static char wineserver[] = "server/wineserver";
1089 static char debug[] = "-d";
1090
1091 if (!started)
1092 {
1093 int status;
1094 int pid = fork();
1095 if (pid == -1) fatal_perror( "fork" );
1096 if (!pid)
1097 {
1098 argv[0] = wineserver;
1099 argv[1] = TRACE_ON(server) ? debug : NULL;
1100 argv[2] = NULL;
1101 wine_exec_wine_binary( argv[0], argv, getenv("WINESERVER") );
1102 fatal_error( "could not exec wineserver\n" );
1103 }
1104 waitpid( pid, &status, 0 );
1105 status = WIFEXITED(status) ? WEXITSTATUS(status) : 1;
1106 if (status == 2) return; /* server lock held by someone else, will retry later */
1107 if (status) exit(status); /* server failed */
1108 started = TRUE;
1109 }
1110 }
1111
1112
1113 /***********************************************************************
1114 * setup_config_dir
1115 *
1116 * Setup the wine configuration dir.
1117 */
1118 static void setup_config_dir(void)
1119 {
1120 const char *p, *config_dir = wine_get_config_dir();
1121
1122 if (chdir( config_dir ) == -1)
1123 {
1124 if (errno != ENOENT) fatal_perror( "chdir to %s\n", config_dir );
1125
1126 if ((p = strrchr( config_dir, '/' )) && p != config_dir)
1127 {
1128 struct stat st;
1129 char *tmp_dir;
1130
1131 if (!(tmp_dir = malloc( p + 1 - config_dir ))) fatal_error( "out of memory\n" );
1132 memcpy( tmp_dir, config_dir, p - config_dir );
1133 tmp_dir[p - config_dir] = 0;
1134 if (!stat( tmp_dir, &st ) && st.st_uid != getuid())
1135 fatal_error( "'%s' is not owned by you, refusing to create a configuration directory there\n",
1136 tmp_dir );
1137 free( tmp_dir );
1138 }
1139
1140 mkdir( config_dir, 0777 );
1141 if (chdir( config_dir ) == -1) fatal_perror( "chdir to %s\n", config_dir );
1142
1143 MESSAGE( "wine: created the configuration directory '%s'\n", config_dir );
1144 }
1145
1146 if (mkdir( "dosdevices", 0777 ) == -1)
1147 {
1148 if (errno == EEXIST) return;
1149 fatal_perror( "cannot create %s/dosdevices\n", config_dir );
1150 }
1151
1152 /* create the drive symlinks */
1153
1154 mkdir( "drive_c", 0777 );
1155 symlink( "../drive_c", "dosdevices/c:" );
1156 symlink( "/", "dosdevices/z:" );
1157 }
1158
1159
1160 /***********************************************************************
1161 * server_connect_error
1162 *
1163 * Try to display a meaningful explanation of why we couldn't connect
1164 * to the server.
1165 */
1166 static void server_connect_error( const char *serverdir )
1167 {
1168 int fd;
1169 struct flock fl;
1170
1171 if ((fd = open( LOCKNAME, O_WRONLY )) == -1)
1172 fatal_error( "for some mysterious reason, the wine server never started.\n" );
1173
1174 fl.l_type = F_WRLCK;
1175 fl.l_whence = SEEK_SET;
1176 fl.l_start = 0;
1177 fl.l_len = 1;
1178 if (fcntl( fd, F_GETLK, &fl ) != -1)
1179 {
1180 if (fl.l_type == F_WRLCK) /* the file is locked */
1181 fatal_error( "a wine server seems to be running, but I cannot connect to it.\n"
1182 " You probably need to kill that process (it might be pid %d).\n",
1183 (int)fl.l_pid );
1184 fatal_error( "for some mysterious reason, the wine server failed to run.\n" );
1185 }
1186 fatal_error( "the file system of '%s' doesn't support locks,\n"
1187 " and there is a 'socket' file in that directory that prevents wine from starting.\n"
1188 " You should make sure no wine server is running, remove that file and try again.\n",
1189 serverdir );
1190 }
1191
1192
1193 /***********************************************************************
1194 * server_connect
1195 *
1196 * Attempt to connect to an existing server socket.
1197 * We need to be in the server directory already.
1198 */
1199 static int server_connect(void)
1200 {
1201 const char *serverdir;
1202 struct sockaddr_un addr;
1203 struct stat st;
1204 int s, slen, retry, fd_cwd;
1205
1206 /* retrieve the current directory */
1207 fd_cwd = open( ".", O_RDONLY );
1208 if (fd_cwd != -1) fcntl( fd_cwd, F_SETFD, FD_CLOEXEC );
1209
1210 setup_config_dir();
1211 serverdir = wine_get_server_dir();
1212
1213 /* chdir to the server directory */
1214 if (chdir( serverdir ) == -1)
1215 {
1216 if (errno != ENOENT) fatal_perror( "chdir to %s", serverdir );
1217 start_server();
1218 if (chdir( serverdir ) == -1) fatal_perror( "chdir to %s", serverdir );
1219 }
1220
1221 /* make sure we are at the right place */
1222 if (stat( ".", &st ) == -1) fatal_perror( "stat %s", serverdir );
1223 if (st.st_uid != getuid()) fatal_error( "'%s' is not owned by you\n", serverdir );
1224 if (st.st_mode & 077) fatal_error( "'%s' must not be accessible by other users\n", serverdir );
1225
1226 for (retry = 0; retry < 6; retry++)
1227 {
1228 /* if not the first try, wait a bit to leave the previous server time to exit */
1229 if (retry)
1230 {
1231 usleep( 100000 * retry * retry );
1232 start_server();
1233 if (lstat( SOCKETNAME, &st ) == -1) continue; /* still no socket, wait a bit more */
1234 }
1235 else if (lstat( SOCKETNAME, &st ) == -1) /* check for an already existing socket */
1236 {
1237 if (errno != ENOENT) fatal_perror( "lstat %s/%s", serverdir, SOCKETNAME );
1238 start_server();
1239 if (lstat( SOCKETNAME, &st ) == -1) continue; /* still no socket, wait a bit more */
1240 }
1241
1242 /* make sure the socket is sane (ISFIFO needed for Solaris) */
1243 if (!S_ISSOCK(st.st_mode) && !S_ISFIFO(st.st_mode))
1244 fatal_error( "'%s/%s' is not a socket\n", serverdir, SOCKETNAME );
1245 if (st.st_uid != getuid())
1246 fatal_error( "'%s/%s' is not owned by you\n", serverdir, SOCKETNAME );
1247
1248 /* try to connect to it */
1249 addr.sun_family = AF_UNIX;
1250 strcpy( addr.sun_path, SOCKETNAME );
1251 slen = sizeof(addr) - sizeof(addr.sun_path) + strlen(addr.sun_path) + 1;
1252 #ifdef HAVE_STRUCT_SOCKADDR_UN_SUN_LEN
1253 addr.sun_len = slen;
1254 #endif
1255 if ((s = socket( AF_UNIX, SOCK_STREAM, 0 )) == -1) fatal_perror( "socket" );
1256 #ifdef SO_PASSCRED
1257 else
1258 {
1259 int enable = 1;
1260 setsockopt( s, SOL_SOCKET, SO_PASSCRED, &enable, sizeof(enable) );
1261 }
1262 #endif
1263 if (connect( s, (struct sockaddr *)&addr, slen ) != -1)
1264 {
1265 /* switch back to the starting directory */
1266 if (fd_cwd != -1)
1267 {
1268 fchdir( fd_cwd );
1269 close( fd_cwd );
1270 }
1271 fcntl( s, F_SETFD, FD_CLOEXEC );
1272 return s;
1273 }
1274 close( s );
1275 }
1276 server_connect_error( serverdir );
1277 }
1278
1279
1280 #ifdef __APPLE__
1281 #include <mach/mach.h>
1282 #include <mach/mach_error.h>
1283 #include <servers/bootstrap.h>
1284
1285 /* send our task port to the server */
1286 static void send_server_task_port(void)
1287 {
1288 mach_port_t bootstrap_port, wineserver_port;
1289 kern_return_t kret;
1290
1291 struct {
1292 mach_msg_header_t header;
1293 mach_msg_body_t body;
1294 mach_msg_port_descriptor_t task_port;
1295 } msg;
1296
1297 if (task_get_bootstrap_port(mach_task_self(), &bootstrap_port) != KERN_SUCCESS) return;
1298
1299 kret = bootstrap_look_up(bootstrap_port, (char*)wine_get_server_dir(), &wineserver_port);
1300 if (kret != KERN_SUCCESS)
1301 fatal_error( "cannot find the server port: 0x%08x\n", kret );
1302
1303 mach_port_deallocate(mach_task_self(), bootstrap_port);
1304
1305 msg.header.msgh_bits = MACH_MSGH_BITS(MACH_MSG_TYPE_COPY_SEND, 0) | MACH_MSGH_BITS_COMPLEX;
1306 msg.header.msgh_size = sizeof(msg);
1307 msg.header.msgh_remote_port = wineserver_port;
1308 msg.header.msgh_local_port = MACH_PORT_NULL;
1309
1310 msg.body.msgh_descriptor_count = 1;
1311 msg.task_port.name = mach_task_self();
1312 msg.task_port.disposition = MACH_MSG_TYPE_COPY_SEND;
1313 msg.task_port.type = MACH_MSG_PORT_DESCRIPTOR;
1314
1315 kret = mach_msg_send(&msg.header);
1316 if (kret != KERN_SUCCESS)
1317 server_protocol_error( "mach_msg_send failed: 0x%08x\n", kret );
1318
1319 mach_port_deallocate(mach_task_self(), wineserver_port);
1320 }
1321 #endif /* __APPLE__ */
1322
1323
1324 /***********************************************************************
1325 * get_unix_tid
1326 *
1327 * Retrieve the Unix tid to use on the server side for the current thread.
1328 */
1329 static int get_unix_tid(void)
1330 {
1331 int ret = -1;
1332 #ifdef HAVE_PTHREAD_GETTHREADID_NP
1333 ret = pthread_getthreadid_np();
1334 #elif defined(linux)
1335 ret = syscall( __NR_gettid );
1336 #elif defined(__sun)
1337 ret = pthread_self();
1338 #elif defined(__APPLE__)
1339 ret = mach_thread_self();
1340 mach_port_deallocate(mach_task_self(), ret);
1341 #elif defined(__NetBSD__)
1342 ret = _lwp_self();
1343 #elif defined(__FreeBSD__)
1344 long lwpid;
1345 thr_self( &lwpid );
1346 ret = lwpid;
1347 #elif defined(__DragonFly__)
1348 ret = lwp_gettid();
1349 #endif
1350 return ret;
1351 }
1352
1353
1354 /***********************************************************************
1355 * server_init_process
1356 *
1357 * Start the server and create the initial socket pair.
1358 */
1359 void server_init_process(void)
1360 {
1361 obj_handle_t version;
1362 const char *env_socket = getenv( "WINESERVERSOCKET" );
1363
1364 server_pid = -1;
1365 if (env_socket)
1366 {
1367 fd_socket = atoi( env_socket );
1368 if (fcntl( fd_socket, F_SETFD, FD_CLOEXEC ) == -1)
1369 fatal_perror( "Bad server socket %d", fd_socket );
1370 unsetenv( "WINESERVERSOCKET" );
1371 }
1372 else
1373 {
1374 const char *arch = getenv( "WINEARCH" );
1375
1376 if (arch && strcmp( arch, "win32" ) && strcmp( arch, "win64" ))
1377 fatal_error( "WINEARCH set to invalid value '%s', it must be either win32 or win64.\n", arch );
1378
1379 fd_socket = server_connect();
1380 }
1381
1382 /* setup the signal mask */
1383 sigemptyset( &server_block_set );
1384 sigaddset( &server_block_set, SIGALRM );
1385 sigaddset( &server_block_set, SIGIO );
1386 sigaddset( &server_block_set, SIGINT );
1387 sigaddset( &server_block_set, SIGHUP );
1388 sigaddset( &server_block_set, SIGUSR1 );
1389 sigaddset( &server_block_set, SIGUSR2 );
1390 sigaddset( &server_block_set, SIGCHLD );
1391 pthread_sigmask( SIG_BLOCK, &server_block_set, NULL );
1392
1393 /* receive the first thread request fd on the main socket */
1394 ntdll_get_thread_data()->request_fd = receive_fd( &version );
1395
1396 #ifdef SO_PASSCRED
1397 /* now that we hopefully received the server_pid, disable SO_PASSCRED */
1398 {
1399 int enable = 0;
1400 setsockopt( fd_socket, SOL_SOCKET, SO_PASSCRED, &enable, sizeof(enable) );
1401 }
1402 #endif
1403
1404 if (version != SERVER_PROTOCOL_VERSION)
1405 server_protocol_error( "version mismatch %d/%d.\n"
1406 "Your %s binary was not upgraded correctly,\n"
1407 "or you have an older one somewhere in your PATH.\n"
1408 "Or maybe the wrong wineserver is still running?\n",
1409 version, SERVER_PROTOCOL_VERSION,
1410 (version > SERVER_PROTOCOL_VERSION) ? "wine" : "wineserver" );
1411 #ifdef __APPLE__
1412 send_server_task_port();
1413 #endif
1414 #if defined(__linux__) && defined(HAVE_PRCTL)
1415 /* work around Ubuntu's ptrace breakage */
1416 if (server_pid != -1) prctl( 0x59616d61 /* PR_SET_PTRACER */, server_pid );
1417 #endif
1418 }
1419
1420
1421 /***********************************************************************
1422 * server_init_process_done
1423 */
1424 NTSTATUS server_init_process_done(void)
1425 {
1426 PEB *peb = NtCurrentTeb()->Peb;
1427 IMAGE_NT_HEADERS *nt = RtlImageNtHeader( peb->ImageBaseAddress );
1428 NTSTATUS status;
1429
1430 /* Install signal handlers; this cannot be done earlier, since we cannot
1431 * send exceptions to the debugger before the create process event that
1432 * is sent by REQ_INIT_PROCESS_DONE.
1433 * We do need the handlers in place by the time the request is over, so
1434 * we set them up here. If we segfault between here and the server call
1435 * something is very wrong... */
1436 signal_init_process();
1437
1438 /* Signal the parent process to continue */
1439 SERVER_START_REQ( init_process_done )
1440 {
1441 req->module = wine_server_client_ptr( peb->ImageBaseAddress );
1442 #ifdef __i386__
1443 req->ldt_copy = wine_server_client_ptr( &wine_ldt_copy );
1444 #endif
1445 req->entry = wine_server_client_ptr( (char *)peb->ImageBaseAddress + nt->OptionalHeader.AddressOfEntryPoint );
1446 req->gui = (nt->OptionalHeader.Subsystem != IMAGE_SUBSYSTEM_WINDOWS_CUI);
1447 status = wine_server_call( req );
1448 }
1449 SERVER_END_REQ;
1450
1451 return status;
1452 }
1453
1454
1455 /***********************************************************************
1456 * server_init_thread
1457 *
1458 * Send an init thread request. Return 0 if OK.
1459 */
1460 size_t server_init_thread( void *entry_point )
1461 {
1462 static const char *cpu_names[] = { "x86", "x86_64", "PowerPC", "ARM", "ARM64" };
1463 static const BOOL is_win64 = (sizeof(void *) > sizeof(int));
1464 const char *arch = getenv( "WINEARCH" );
1465 int ret;
1466 int reply_pipe[2];
1467 struct sigaction sig_act;
1468 size_t info_size;
1469
1470 sig_act.sa_handler = SIG_IGN;
1471 sig_act.sa_flags = 0;
1472 sigemptyset( &sig_act.sa_mask );
1473
1474 /* ignore SIGPIPE so that we get an EPIPE error instead */
1475 sigaction( SIGPIPE, &sig_act, NULL );
1476
1477 /* create the server->client communication pipes */
1478 if (server_pipe( reply_pipe ) == -1) server_protocol_perror( "pipe" );
1479 if (server_pipe( ntdll_get_thread_data()->wait_fd ) == -1) server_protocol_perror( "pipe" );
1480 wine_server_send_fd( reply_pipe[1] );
1481 wine_server_send_fd( ntdll_get_thread_data()->wait_fd[1] );
1482 ntdll_get_thread_data()->reply_fd = reply_pipe[0];
1483 close( reply_pipe[1] );
1484
1485 SERVER_START_REQ( init_thread )
1486 {
1487 req->unix_pid = getpid();
1488 req->unix_tid = get_unix_tid();
1489 req->teb = wine_server_client_ptr( NtCurrentTeb() );
1490 req->entry = wine_server_client_ptr( entry_point );
1491 req->reply_fd = reply_pipe[1];
1492 req->wait_fd = ntdll_get_thread_data()->wait_fd[1];
1493 req->debug_level = (TRACE_ON(server) != 0);
1494 req->cpu = client_cpu;
1495 ret = wine_server_call( req );
1496 NtCurrentTeb()->ClientId.UniqueProcess = ULongToHandle(reply->pid);
1497 NtCurrentTeb()->ClientId.UniqueThread = ULongToHandle(reply->tid);
1498 info_size = reply->info_size;
1499 server_start_time = reply->server_start;
1500 server_cpus = reply->all_cpus;
1501 }
1502 SERVER_END_REQ;
1503
1504 is_wow64 = !is_win64 && (server_cpus & ((1 << CPU_x86_64) | (1 << CPU_ARM64))) != 0;
1505 ntdll_get_thread_data()->wow64_redir = is_wow64;
1506
1507 switch (ret)
1508 {
1509 case STATUS_SUCCESS:
1510 if (arch)
1511 {
1512 if (!strcmp( arch, "win32" ) && (is_win64 || is_wow64))
1513 fatal_error( "WINEARCH set to win32 but '%s' is a 64-bit installation.\n",
1514 wine_get_config_dir() );
1515 if (!strcmp( arch, "win64" ) && !is_win64 && !is_wow64)
1516 fatal_error( "WINEARCH set to win64 but '%s' is a 32-bit installation.\n",
1517 wine_get_config_dir() );
1518 }
1519 return info_size;
1520 case STATUS_INVALID_IMAGE_WIN_64:
1521 fatal_error( "'%s' is a 32-bit installation, it cannot support 64-bit applications.\n",
1522 wine_get_config_dir() );
1523 case STATUS_NOT_SUPPORTED:
1524 fatal_error( "'%s' is a 64-bit installation, it cannot be used with a 32-bit wineserver.\n",
1525 wine_get_config_dir() );
1526 case STATUS_INVALID_IMAGE_FORMAT:
1527 fatal_error( "wineserver doesn't support the %s architecture\n", cpu_names[client_cpu] );
1528 default:
1529 server_protocol_error( "init_thread failed with status %x\n", ret );
1530 }
1531 }
Windows API implementation