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ntdll: Reorder code to make the select logic clearer.
[wine.git] / dlls / ntdll / server.c
blob18ee41790f3ef2b1e3d6c3b3640972a755121425
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 * server_call_unlocked
282 */
283 unsigned int server_call_unlocked( void *req_ptr )
284 {
285 struct __server_request_info * const req = req_ptr;
286 unsigned int ret;
287
288 if ((ret = send_request( req ))) return ret;
289 return wait_reply( req );
290 }
291
292
293 /***********************************************************************
294 * wine_server_call (NTDLL.@)
295 *
296 * Perform a server call.
297 *
298 * PARAMS
299 * req_ptr [I/O] Function dependent data
300 *
301 * RETURNS
302 * Depends on server function being called, but usually an NTSTATUS code.
303 *
304 * NOTES
305 * Use the SERVER_START_REQ and SERVER_END_REQ to help you fill out the
306 * server request structure for the particular call. E.g:
307 *| SERVER_START_REQ( event_op )
308 *| {
309 *| req->handle = handle;
310 *| req->op = SET_EVENT;
311 *| ret = wine_server_call( req );
312 *| }
313 *| SERVER_END_REQ;
314 */
315 unsigned int CDECL wine_server_call( void *req_ptr )
316 {
317 sigset_t old_set;
318 unsigned int ret;
319
320 pthread_sigmask( SIG_BLOCK, &server_block_set, &old_set );
321 ret = server_call_unlocked( req_ptr );
322 pthread_sigmask( SIG_SETMASK, &old_set, NULL );
323 return ret;
324 }
325
326
327 /***********************************************************************
328 * server_enter_uninterrupted_section
329 */
330 void server_enter_uninterrupted_section( RTL_CRITICAL_SECTION *cs, sigset_t *sigset )
331 {
332 pthread_sigmask( SIG_BLOCK, &server_block_set, sigset );
333 RtlEnterCriticalSection( cs );
334 }
335
336
337 /***********************************************************************
338 * server_leave_uninterrupted_section
339 */
340 void server_leave_uninterrupted_section( RTL_CRITICAL_SECTION *cs, sigset_t *sigset )
341 {
342 RtlLeaveCriticalSection( cs );
343 pthread_sigmask( SIG_SETMASK, sigset, NULL );
344 }
345
346
347 /***********************************************************************
348 * wait_select_reply
349 *
350 * Wait for a reply on the waiting pipe of the current thread.
351 */
352 int wait_select_reply( void *cookie )
353 {
354 int signaled;
355 struct wake_up_reply reply;
356 for (;;)
357 {
358 int ret;
359 ret = read( ntdll_get_thread_data()->wait_fd[0], &reply, sizeof(reply) );
360 if (ret == sizeof(reply))
361 {
362 if (!reply.cookie) abort_thread( reply.signaled ); /* thread got killed */
363 if (wine_server_get_ptr(reply.cookie) == cookie) return reply.signaled;
364 /* we stole another reply, wait for the real one */
365 signaled = wait_select_reply( cookie );
366 /* and now put the wrong one back in the pipe */
367 for (;;)
368 {
369 ret = write( ntdll_get_thread_data()->wait_fd[1], &reply, sizeof(reply) );
370 if (ret == sizeof(reply)) break;
371 if (ret >= 0) server_protocol_error( "partial wakeup write %d\n", ret );
372 if (errno == EINTR) continue;
373 server_protocol_perror("wakeup write");
374 }
375 return signaled;
376 }
377 if (ret >= 0) server_protocol_error( "partial wakeup read %d\n", ret );
378 if (errno == EINTR) continue;
379 server_protocol_perror("wakeup read");
380 }
381 }
382
383
384 /***********************************************************************
385 * invoke_apc
386 *
387 * Invoke a single APC. Return TRUE if a user APC has been run.
388 */
389 BOOL invoke_apc( const apc_call_t *call, apc_result_t *result )
390 {
391 BOOL user_apc = FALSE;
392 SIZE_T size;
393 void *addr;
394 pe_image_info_t image_info;
395
396 memset( result, 0, sizeof(*result) );
397
398 switch (call->type)
399 {
400 case APC_NONE:
401 break;
402 case APC_USER:
403 {
404 void (WINAPI *func)(ULONG_PTR,ULONG_PTR,ULONG_PTR) = wine_server_get_ptr( call->user.func );
405 func( call->user.args[0], call->user.args[1], call->user.args[2] );
406 user_apc = TRUE;
407 break;
408 }
409 case APC_TIMER:
410 {
411 void (WINAPI *func)(void*, unsigned int, unsigned int) = wine_server_get_ptr( call->timer.func );
412 func( wine_server_get_ptr( call->timer.arg ),
413 (DWORD)call->timer.time, (DWORD)(call->timer.time >> 32) );
414 user_apc = TRUE;
415 break;
416 }
417 case APC_ASYNC_IO:
418 {
419 IO_STATUS_BLOCK *iosb = wine_server_get_ptr( call->async_io.sb );
420 NTSTATUS (**user)(void *, IO_STATUS_BLOCK *, NTSTATUS) = wine_server_get_ptr( call->async_io.user );
421 result->type = call->type;
422 result->async_io.status = (*user)( user, iosb, call->async_io.status );
423 if (result->async_io.status != STATUS_PENDING)
424 result->async_io.total = iosb->Information;
425 break;
426 }
427 case APC_VIRTUAL_ALLOC:
428 result->type = call->type;
429 addr = wine_server_get_ptr( call->virtual_alloc.addr );
430 size = call->virtual_alloc.size;
431 if ((ULONG_PTR)addr == call->virtual_alloc.addr && size == call->virtual_alloc.size)
432 {
433 result->virtual_alloc.status = virtual_alloc_aligned( &addr,
434 call->virtual_alloc.zero_bits_64, &size,
435 call->virtual_alloc.op_type,
436 call->virtual_alloc.prot,
437 0 );
438 result->virtual_alloc.addr = wine_server_client_ptr( addr );
439 result->virtual_alloc.size = size;
440 }
441 else result->virtual_alloc.status = STATUS_WORKING_SET_LIMIT_RANGE;
442 break;
443 case APC_VIRTUAL_FREE:
444 result->type = call->type;
445 addr = wine_server_get_ptr( call->virtual_free.addr );
446 size = call->virtual_free.size;
447 if ((ULONG_PTR)addr == call->virtual_free.addr && size == call->virtual_free.size)
448 {
449 result->virtual_free.status = NtFreeVirtualMemory( NtCurrentProcess(), &addr, &size,
450 call->virtual_free.op_type );
451 result->virtual_free.addr = wine_server_client_ptr( addr );
452 result->virtual_free.size = size;
453 }
454 else result->virtual_free.status = STATUS_INVALID_PARAMETER;
455 break;
456 case APC_VIRTUAL_QUERY:
457 {
458 MEMORY_BASIC_INFORMATION info;
459 result->type = call->type;
460 addr = wine_server_get_ptr( call->virtual_query.addr );
461 if ((ULONG_PTR)addr == call->virtual_query.addr)
462 result->virtual_query.status = NtQueryVirtualMemory( NtCurrentProcess(),
463 addr, MemoryBasicInformation, &info,
464 sizeof(info), NULL );
465 else
466 result->virtual_query.status = STATUS_WORKING_SET_LIMIT_RANGE;
467
468 if (result->virtual_query.status == STATUS_SUCCESS)
469 {
470 result->virtual_query.base = wine_server_client_ptr( info.BaseAddress );
471 result->virtual_query.alloc_base = wine_server_client_ptr( info.AllocationBase );
472 result->virtual_query.size = info.RegionSize;
473 result->virtual_query.prot = info.Protect;
474 result->virtual_query.alloc_prot = info.AllocationProtect;
475 result->virtual_query.state = info.State >> 12;
476 result->virtual_query.alloc_type = info.Type >> 16;
477 }
478 break;
479 }
480 case APC_VIRTUAL_PROTECT:
481 result->type = call->type;
482 addr = wine_server_get_ptr( call->virtual_protect.addr );
483 size = call->virtual_protect.size;
484 if ((ULONG_PTR)addr == call->virtual_protect.addr && size == call->virtual_protect.size)
485 {
486 result->virtual_protect.status = NtProtectVirtualMemory( NtCurrentProcess(), &addr, &size,
487 call->virtual_protect.prot,
488 &result->virtual_protect.prot );
489 result->virtual_protect.addr = wine_server_client_ptr( addr );
490 result->virtual_protect.size = size;
491 }
492 else result->virtual_protect.status = STATUS_INVALID_PARAMETER;
493 break;
494 case APC_VIRTUAL_FLUSH:
495 result->type = call->type;
496 addr = wine_server_get_ptr( call->virtual_flush.addr );
497 size = call->virtual_flush.size;
498 if ((ULONG_PTR)addr == call->virtual_flush.addr && size == call->virtual_flush.size)
499 {
500 result->virtual_flush.status = NtFlushVirtualMemory( NtCurrentProcess(),
501 (const void **)&addr, &size, 0 );
502 result->virtual_flush.addr = wine_server_client_ptr( addr );
503 result->virtual_flush.size = size;
504 }
505 else result->virtual_flush.status = STATUS_INVALID_PARAMETER;
506 break;
507 case APC_VIRTUAL_LOCK:
508 result->type = call->type;
509 addr = wine_server_get_ptr( call->virtual_lock.addr );
510 size = call->virtual_lock.size;
511 if ((ULONG_PTR)addr == call->virtual_lock.addr && size == call->virtual_lock.size)
512 {
513 result->virtual_lock.status = NtLockVirtualMemory( NtCurrentProcess(), &addr, &size, 0 );
514 result->virtual_lock.addr = wine_server_client_ptr( addr );
515 result->virtual_lock.size = size;
516 }
517 else result->virtual_lock.status = STATUS_INVALID_PARAMETER;
518 break;
519 case APC_VIRTUAL_UNLOCK:
520 result->type = call->type;
521 addr = wine_server_get_ptr( call->virtual_unlock.addr );
522 size = call->virtual_unlock.size;
523 if ((ULONG_PTR)addr == call->virtual_unlock.addr && size == call->virtual_unlock.size)
524 {
525 result->virtual_unlock.status = NtUnlockVirtualMemory( NtCurrentProcess(), &addr, &size, 0 );
526 result->virtual_unlock.addr = wine_server_client_ptr( addr );
527 result->virtual_unlock.size = size;
528 }
529 else result->virtual_unlock.status = STATUS_INVALID_PARAMETER;
530 break;
531 case APC_MAP_VIEW:
532 result->type = call->type;
533 addr = wine_server_get_ptr( call->map_view.addr );
534 size = call->map_view.size;
535 if ((ULONG_PTR)addr == call->map_view.addr && size == call->map_view.size)
536 {
537 LARGE_INTEGER offset;
538 offset.QuadPart = call->map_view.offset;
539 result->map_view.status = virtual_map_section( wine_server_ptr_handle(call->map_view.handle),
540 &addr,
541 call->map_view.zero_bits_64, 0,
542 &offset, &size,
543 call->map_view.alloc_type, call->map_view.prot,
544 &image_info );
545 result->map_view.addr = wine_server_client_ptr( addr );
546 result->map_view.size = size;
547 }
548 else result->map_view.status = STATUS_INVALID_PARAMETER;
549 NtClose( wine_server_ptr_handle(call->map_view.handle) );
550 break;
551 case APC_UNMAP_VIEW:
552 result->type = call->type;
553 addr = wine_server_get_ptr( call->unmap_view.addr );
554 if ((ULONG_PTR)addr == call->unmap_view.addr)
555 result->unmap_view.status = NtUnmapViewOfSection( NtCurrentProcess(), addr );
556 else
557 result->unmap_view.status = STATUS_INVALID_PARAMETER;
558 break;
559 case APC_CREATE_THREAD:
560 {
561 CLIENT_ID id;
562 HANDLE handle;
563 SIZE_T reserve = call->create_thread.reserve;
564 SIZE_T commit = call->create_thread.commit;
565 void *func = wine_server_get_ptr( call->create_thread.func );
566 void *arg = wine_server_get_ptr( call->create_thread.arg );
567
568 result->type = call->type;
569 if (reserve == call->create_thread.reserve && commit == call->create_thread.commit &&
570 (ULONG_PTR)func == call->create_thread.func && (ULONG_PTR)arg == call->create_thread.arg)
571 {
572 result->create_thread.status = RtlCreateUserThread( NtCurrentProcess(), NULL,
573 call->create_thread.suspend, NULL,
574 reserve, commit, func, arg, &handle, &id );
575 result->create_thread.handle = wine_server_obj_handle( handle );
576 result->create_thread.tid = HandleToULong(id.UniqueThread);
577 }
578 else result->create_thread.status = STATUS_INVALID_PARAMETER;
579 break;
580 }
581 case APC_BREAK_PROCESS:
582 result->type = APC_BREAK_PROCESS;
583 result->break_process.status = RtlCreateUserThread( NtCurrentProcess(), NULL, FALSE, NULL, 0, 0,
584 DbgUiRemoteBreakin, NULL, NULL, NULL );
585 break;
586 default:
587 server_protocol_error( "get_apc_request: bad type %d\n", call->type );
588 break;
589 }
590 return user_apc;
591 }
592
593
594 /***********************************************************************
595 * server_select
596 */
597 unsigned int server_select( const select_op_t *select_op, data_size_t size, UINT flags,
598 const LARGE_INTEGER *timeout )
599 {
600 unsigned int ret;
601 int cookie;
602 BOOL user_apc = FALSE;
603 obj_handle_t apc_handle = 0;
604 apc_call_t call;
605 apc_result_t result;
606 timeout_t abs_timeout = timeout ? timeout->QuadPart : TIMEOUT_INFINITE;
607
608 memset( &result, 0, sizeof(result) );
609
610 do
611 {
612 SERVER_START_REQ( select )
613 {
614 req->flags = flags;
615 req->cookie = wine_server_client_ptr( &cookie );
616 req->prev_apc = apc_handle;
617 req->timeout = abs_timeout;
618 wine_server_add_data( req, &result, sizeof(result) );
619 wine_server_add_data( req, select_op, size );
620 ret = wine_server_call( req );
621 abs_timeout = reply->timeout;
622 apc_handle = reply->apc_handle;
623 call = reply->call;
624 }
625 SERVER_END_REQ;
626
627 /* don't signal multiple times */
628 if (size >= sizeof(select_op->signal_and_wait) && select_op->op == SELECT_SIGNAL_AND_WAIT)
629 size = offsetof( select_op_t, signal_and_wait.signal );
630
631 if ((ret == STATUS_USER_APC || ret == STATUS_KERNEL_APC) &&
632 invoke_apc( &call, &result ))
633 {
634 /* if we ran a user apc we have to check once more if additional apcs are queued,
635 * but we don't want to wait */
636 abs_timeout = 0;
637 user_apc = TRUE;
638 size = 0;
639 }
640
641 if (ret == STATUS_PENDING) ret = wait_select_reply( &cookie );
642 }
643 while (ret == STATUS_USER_APC || ret == STATUS_KERNEL_APC);
644
645 if (ret == STATUS_TIMEOUT && user_apc) ret = STATUS_USER_APC;
646
647 /* A test on Windows 2000 shows that Windows always yields during
648 a wait, but a wait that is hit by an event gets a priority
649 boost as well. This seems to model that behavior the closest. */
650 if (ret == STATUS_TIMEOUT) NtYieldExecution();
651
652 return ret;
653 }
654
655
656 /***********************************************************************
657 * server_queue_process_apc
658 */
659 unsigned int server_queue_process_apc( HANDLE process, const apc_call_t *call, apc_result_t *result )
660 {
661 for (;;)
662 {
663 unsigned int ret;
664 HANDLE handle = 0;
665 BOOL self = FALSE;
666
667 SERVER_START_REQ( queue_apc )
668 {
669 req->handle = wine_server_obj_handle( process );
670 req->call = *call;
671 if (!(ret = wine_server_call( req )))
672 {
673 handle = wine_server_ptr_handle( reply->handle );
674 self = reply->self;
675 }
676 }
677 SERVER_END_REQ;
678 if (ret != STATUS_SUCCESS) return ret;
679
680 if (self)
681 {
682 invoke_apc( call, result );
683 }
684 else
685 {
686 NtWaitForSingleObject( handle, FALSE, NULL );
687
688 SERVER_START_REQ( get_apc_result )
689 {
690 req->handle = wine_server_obj_handle( handle );
691 if (!(ret = wine_server_call( req ))) *result = reply->result;
692 }
693 SERVER_END_REQ;
694
695 if (!ret && result->type == APC_NONE) continue; /* APC didn't run, try again */
696 }
697 return ret;
698 }
699 }
700
701
702 /***********************************************************************
703 * wine_server_send_fd (NTDLL.@)
704 *
705 * Send a file descriptor to the server.
706 *
707 * PARAMS
708 * fd [I] file descriptor to send
709 *
710 * RETURNS
711 * nothing
712 */
713 void CDECL wine_server_send_fd( int fd )
714 {
715 struct send_fd data;
716 struct msghdr msghdr;
717 struct iovec vec;
718 int ret;
719
720 #ifdef HAVE_STRUCT_MSGHDR_MSG_ACCRIGHTS
721 msghdr.msg_accrights = (void *)&fd;
722 msghdr.msg_accrightslen = sizeof(fd);
723 #else /* HAVE_STRUCT_MSGHDR_MSG_ACCRIGHTS */
724 char cmsg_buffer[256];
725 struct cmsghdr *cmsg;
726 msghdr.msg_control = cmsg_buffer;
727 msghdr.msg_controllen = sizeof(cmsg_buffer);
728 msghdr.msg_flags = 0;
729 cmsg = CMSG_FIRSTHDR( &msghdr );
730 cmsg->cmsg_len = CMSG_LEN( sizeof(fd) );
731 cmsg->cmsg_level = SOL_SOCKET;
732 cmsg->cmsg_type = SCM_RIGHTS;
733 *(int *)CMSG_DATA(cmsg) = fd;
734 msghdr.msg_controllen = cmsg->cmsg_len;
735 #endif /* HAVE_STRUCT_MSGHDR_MSG_ACCRIGHTS */
736
737 msghdr.msg_name = NULL;
738 msghdr.msg_namelen = 0;
739 msghdr.msg_iov = &vec;
740 msghdr.msg_iovlen = 1;
741
742 vec.iov_base = (void *)&data;
743 vec.iov_len = sizeof(data);
744
745 data.tid = GetCurrentThreadId();
746 data.fd = fd;
747
748 for (;;)
749 {
750 if ((ret = sendmsg( fd_socket, &msghdr, 0 )) == sizeof(data)) return;
751 if (ret >= 0) server_protocol_error( "partial write %d\n", ret );
752 if (errno == EINTR) continue;
753 if (errno == EPIPE) abort_thread(0);
754 server_protocol_perror( "sendmsg" );
755 }
756 }
757
758
759 /***********************************************************************
760 * receive_fd
761 *
762 * Receive a file descriptor passed from the server.
763 */
764 static int receive_fd( obj_handle_t *handle )
765 {
766 struct iovec vec;
767 struct msghdr msghdr;
768 int ret, fd = -1;
769
770 #ifdef HAVE_STRUCT_MSGHDR_MSG_ACCRIGHTS
771 msghdr.msg_accrights = (void *)&fd;
772 msghdr.msg_accrightslen = sizeof(fd);
773 #else /* HAVE_STRUCT_MSGHDR_MSG_ACCRIGHTS */
774 char cmsg_buffer[256];
775 msghdr.msg_control = cmsg_buffer;
776 msghdr.msg_controllen = sizeof(cmsg_buffer);
777 msghdr.msg_flags = 0;
778 #endif /* HAVE_STRUCT_MSGHDR_MSG_ACCRIGHTS */
779
780 msghdr.msg_name = NULL;
781 msghdr.msg_namelen = 0;
782 msghdr.msg_iov = &vec;
783 msghdr.msg_iovlen = 1;
784 vec.iov_base = (void *)handle;
785 vec.iov_len = sizeof(*handle);
786
787 for (;;)
788 {
789 if ((ret = recvmsg( fd_socket, &msghdr, MSG_CMSG_CLOEXEC )) > 0)
790 {
791 #ifndef HAVE_STRUCT_MSGHDR_MSG_ACCRIGHTS
792 struct cmsghdr *cmsg;
793 for (cmsg = CMSG_FIRSTHDR( &msghdr ); cmsg; cmsg = CMSG_NXTHDR( &msghdr, cmsg ))
794 {
795 if (cmsg->cmsg_level != SOL_SOCKET) continue;
796 if (cmsg->cmsg_type == SCM_RIGHTS) fd = *(int *)CMSG_DATA(cmsg);
797 #ifdef SCM_CREDENTIALS
798 else if (cmsg->cmsg_type == SCM_CREDENTIALS)
799 {
800 struct ucred *ucred = (struct ucred *)CMSG_DATA(cmsg);
801 server_pid = ucred->pid;
802 }
803 #endif
804 }
805 #endif /* HAVE_STRUCT_MSGHDR_MSG_ACCRIGHTS */
806 if (fd != -1) fcntl( fd, F_SETFD, FD_CLOEXEC ); /* in case MSG_CMSG_CLOEXEC is not supported */
807 return fd;
808 }
809 if (!ret) break;
810 if (errno == EINTR) continue;
811 if (errno == EPIPE) break;
812 server_protocol_perror("recvmsg");
813 }
814 /* the server closed the connection; time to die... */
815 abort_thread(0);
816 }
817
818
819 /***********************************************************************/
820 /* fd cache support */
821
822 union fd_cache_entry
823 {
824 LONG64 data;
825 struct
826 {
827 int fd;
828 enum server_fd_type type : 5;
829 unsigned int access : 3;
830 unsigned int options : 24;
831 } s;
832 };
833
834 C_ASSERT( sizeof(union fd_cache_entry) == sizeof(LONG64) );
835
836 #define FD_CACHE_BLOCK_SIZE (65536 / sizeof(union fd_cache_entry))
837 #define FD_CACHE_ENTRIES 128
838
839 static union fd_cache_entry *fd_cache[FD_CACHE_ENTRIES];
840 static union fd_cache_entry fd_cache_initial_block[FD_CACHE_BLOCK_SIZE];
841
842 static inline unsigned int handle_to_index( HANDLE handle, unsigned int *entry )
843 {
844 unsigned int idx = (wine_server_obj_handle(handle) >> 2) - 1;
845 *entry = idx / FD_CACHE_BLOCK_SIZE;
846 return idx % FD_CACHE_BLOCK_SIZE;
847 }
848
849
850 /***********************************************************************
851 * add_fd_to_cache
852 *
853 * Caller must hold fd_cache_section.
854 */
855 static BOOL add_fd_to_cache( HANDLE handle, int fd, enum server_fd_type type,
856 unsigned int access, unsigned int options )
857 {
858 unsigned int entry, idx = handle_to_index( handle, &entry );
859 union fd_cache_entry cache;
860
861 if (entry >= FD_CACHE_ENTRIES)
862 {
863 FIXME( "too many allocated handles, not caching %p\n", handle );
864 return FALSE;
865 }
866
867 if (!fd_cache[entry]) /* do we need to allocate a new block of entries? */
868 {
869 if (!entry) fd_cache[0] = fd_cache_initial_block;
870 else
871 {
872 void *ptr = wine_anon_mmap( NULL, FD_CACHE_BLOCK_SIZE * sizeof(union fd_cache_entry),
873 PROT_READ | PROT_WRITE, 0 );
874 if (ptr == MAP_FAILED) return FALSE;
875 fd_cache[entry] = ptr;
876 }
877 }
878
879 /* store fd+1 so that 0 can be used as the unset value */
880 cache.s.fd = fd + 1;
881 cache.s.type = type;
882 cache.s.access = access;
883 cache.s.options = options;
884 cache.data = interlocked_xchg64( &fd_cache[entry][idx].data, cache.data );
885 assert( !cache.s.fd );
886 return TRUE;
887 }
888
889
890 /***********************************************************************
891 * get_cached_fd
892 */
893 static inline NTSTATUS get_cached_fd( HANDLE handle, int *fd, enum server_fd_type *type,
894 unsigned int *access, unsigned int *options )
895 {
896 unsigned int entry, idx = handle_to_index( handle, &entry );
897 union fd_cache_entry cache;
898
899 if (entry >= FD_CACHE_ENTRIES || !fd_cache[entry]) return STATUS_INVALID_HANDLE;
900
901 cache.data = interlocked_cmpxchg64( &fd_cache[entry][idx].data, 0, 0 );
902 if (!cache.data) return STATUS_INVALID_HANDLE;
903
904 /* if fd type is invalid, fd stores an error value */
905 if (cache.s.type == FD_TYPE_INVALID) return cache.s.fd - 1;
906
907 *fd = cache.s.fd - 1;
908 if (type) *type = cache.s.type;
909 if (access) *access = cache.s.access;
910 if (options) *options = cache.s.options;
911 return STATUS_SUCCESS;
912 }
913
914
915 /***********************************************************************
916 * server_remove_fd_from_cache
917 */
918 int server_remove_fd_from_cache( HANDLE handle )
919 {
920 unsigned int entry, idx = handle_to_index( handle, &entry );
921 int fd = -1;
922
923 if (entry < FD_CACHE_ENTRIES && fd_cache[entry])
924 {
925 union fd_cache_entry cache;
926 cache.data = interlocked_xchg64( &fd_cache[entry][idx].data, 0 );
927 if (cache.s.type != FD_TYPE_INVALID) fd = cache.s.fd - 1;
928 }
929
930 return fd;
931 }
932
933
934 /***********************************************************************
935 * server_get_unix_fd
936 *
937 * The returned unix_fd should be closed iff needs_close is non-zero.
938 */
939 int server_get_unix_fd( HANDLE handle, unsigned int wanted_access, int *unix_fd,
940 int *needs_close, enum server_fd_type *type, unsigned int *options )
941 {
942 sigset_t sigset;
943 obj_handle_t fd_handle;
944 int ret, fd = -1;
945 unsigned int access = 0;
946
947 *unix_fd = -1;
948 *needs_close = 0;
949 wanted_access &= FILE_READ_DATA | FILE_WRITE_DATA | FILE_APPEND_DATA;
950
951 ret = get_cached_fd( handle, &fd, type, &access, options );
952 if (ret != STATUS_INVALID_HANDLE) goto done;
953
954 server_enter_uninterrupted_section( &fd_cache_section, &sigset );
955 ret = get_cached_fd( handle, &fd, type, &access, options );
956 if (ret == STATUS_INVALID_HANDLE)
957 {
958 SERVER_START_REQ( get_handle_fd )
959 {
960 req->handle = wine_server_obj_handle( handle );
961 if (!(ret = wine_server_call( req )))
962 {
963 if (type) *type = reply->type;
964 if (options) *options = reply->options;
965 access = reply->access;
966 if ((fd = receive_fd( &fd_handle )) != -1)
967 {
968 assert( wine_server_ptr_handle(fd_handle) == handle );
969 *needs_close = (!reply->cacheable ||
970 !add_fd_to_cache( handle, fd, reply->type,
971 reply->access, reply->options ));
972 }
973 else ret = STATUS_TOO_MANY_OPENED_FILES;
974 }
975 else if (reply->cacheable)
976 {
977 add_fd_to_cache( handle, ret, FD_TYPE_INVALID, 0, 0 );
978 }
979 }
980 SERVER_END_REQ;
981 }
982 server_leave_uninterrupted_section( &fd_cache_section, &sigset );
983
984 done:
985 if (!ret && ((access & wanted_access) != wanted_access))
986 {
987 ret = STATUS_ACCESS_DENIED;
988 if (*needs_close) close( fd );
989 }
990 if (!ret) *unix_fd = fd;
991 return ret;
992 }
993
994
995 /***********************************************************************
996 * wine_server_fd_to_handle (NTDLL.@)
997 *
998 * Allocate a file handle for a Unix file descriptor.
999 *
1000 * PARAMS
1001 * fd [I] Unix file descriptor.
1002 * access [I] Win32 access flags.
1003 * attributes [I] Object attributes.
1004 * handle [O] Address where Wine file handle will be stored.
1005 *
1006 * RETURNS
1007 * NTSTATUS code
1008 */
1009 int CDECL wine_server_fd_to_handle( int fd, unsigned int access, unsigned int attributes, HANDLE *handle )
1010 {
1011 int ret;
1012
1013 *handle = 0;
1014 wine_server_send_fd( fd );
1015
1016 SERVER_START_REQ( alloc_file_handle )
1017 {
1018 req->access = access;
1019 req->attributes = attributes;
1020 req->fd = fd;
1021 if (!(ret = wine_server_call( req ))) *handle = wine_server_ptr_handle( reply->handle );
1022 }
1023 SERVER_END_REQ;
1024 return ret;
1025 }
1026
1027
1028 /***********************************************************************
1029 * wine_server_handle_to_fd (NTDLL.@)
1030 *
1031 * Retrieve the file descriptor corresponding to a file handle.
1032 *
1033 * PARAMS
1034 * handle [I] Wine file handle.
1035 * access [I] Win32 file access rights requested.
1036 * unix_fd [O] Address where Unix file descriptor will be stored.
1037 * options [O] Address where the file open options will be stored. Optional.
1038 *
1039 * RETURNS
1040 * NTSTATUS code
1041 */
1042 int CDECL wine_server_handle_to_fd( HANDLE handle, unsigned int access, int *unix_fd,
1043 unsigned int *options )
1044 {
1045 int needs_close, ret = server_get_unix_fd( handle, access, unix_fd, &needs_close, NULL, options );
1046
1047 if (!ret && !needs_close)
1048 {
1049 if ((*unix_fd = dup(*unix_fd)) == -1) ret = FILE_GetNtStatus();
1050 }
1051 return ret;
1052 }
1053
1054
1055 /***********************************************************************
1056 * wine_server_release_fd (NTDLL.@)
1057 *
1058 * Release the Unix file descriptor returned by wine_server_handle_to_fd.
1059 *
1060 * PARAMS
1061 * handle [I] Wine file handle.
1062 * unix_fd [I] Unix file descriptor to release.
1063 *
1064 * RETURNS
1065 * nothing
1066 */
1067 void CDECL wine_server_release_fd( HANDLE handle, int unix_fd )
1068 {
1069 close( unix_fd );
1070 }
1071
1072
1073 /***********************************************************************
1074 * server_pipe
1075 *
1076 * Create a pipe for communicating with the server.
1077 */
1078 int server_pipe( int fd[2] )
1079 {
1080 int ret;
1081 #ifdef HAVE_PIPE2
1082 static BOOL have_pipe2 = TRUE;
1083
1084 if (have_pipe2)
1085 {
1086 if (!(ret = pipe2( fd, O_CLOEXEC ))) return ret;
1087 if (errno == ENOSYS || errno == EINVAL) have_pipe2 = FALSE; /* don't try again */
1088 }
1089 #endif
1090 if (!(ret = pipe( fd )))
1091 {
1092 fcntl( fd[0], F_SETFD, FD_CLOEXEC );
1093 fcntl( fd[1], F_SETFD, FD_CLOEXEC );
1094 }
1095 return ret;
1096 }
1097
1098
1099 /***********************************************************************
1100 * start_server
1101 *
1102 * Start a new wine server.
1103 */
1104 static void start_server(void)
1105 {
1106 static BOOL started; /* we only try once */
1107 char *argv[3];
1108 static char wineserver[] = "server/wineserver";
1109 static char debug[] = "-d";
1110
1111 if (!started)
1112 {
1113 int status;
1114 int pid = fork();
1115 if (pid == -1) fatal_perror( "fork" );
1116 if (!pid)
1117 {
1118 argv[0] = wineserver;
1119 argv[1] = TRACE_ON(server) ? debug : NULL;
1120 argv[2] = NULL;
1121 wine_exec_wine_binary( argv[0], argv, getenv("WINESERVER") );
1122 fatal_error( "could not exec wineserver\n" );
1123 }
1124 waitpid( pid, &status, 0 );
1125 status = WIFEXITED(status) ? WEXITSTATUS(status) : 1;
1126 if (status == 2) return; /* server lock held by someone else, will retry later */
1127 if (status) exit(status); /* server failed */
1128 started = TRUE;
1129 }
1130 }
1131
1132
1133 /***********************************************************************
1134 * setup_config_dir
1135 *
1136 * Setup the wine configuration dir.
1137 */
1138 static int setup_config_dir(void)
1139 {
1140 const char *p, *config_dir = wine_get_config_dir();
1141 int fd_cwd = open( ".", O_RDONLY );
1142
1143 if (chdir( config_dir ) == -1)
1144 {
1145 if (errno != ENOENT) fatal_perror( "chdir to %s", config_dir );
1146
1147 if ((p = strrchr( config_dir, '/' )) && p != config_dir)
1148 {
1149 struct stat st;
1150 char *tmp_dir;
1151
1152 if (!(tmp_dir = malloc( p + 1 - config_dir ))) fatal_error( "out of memory\n" );
1153 memcpy( tmp_dir, config_dir, p - config_dir );
1154 tmp_dir[p - config_dir] = 0;
1155 if (!stat( tmp_dir, &st ) && st.st_uid != getuid())
1156 fatal_error( "'%s' is not owned by you, refusing to create a configuration directory there\n",
1157 tmp_dir );
1158 free( tmp_dir );
1159 }
1160
1161 mkdir( config_dir, 0777 );
1162 if (chdir( config_dir ) == -1) fatal_perror( "chdir to %s", config_dir );
1163
1164 MESSAGE( "wine: created the configuration directory '%s'\n", config_dir );
1165 }
1166
1167 if (mkdir( "dosdevices", 0777 ) == -1)
1168 {
1169 if (errno == EEXIST) goto done;
1170 fatal_perror( "cannot create %s/dosdevices", config_dir );
1171 }
1172
1173 /* create the drive symlinks */
1174
1175 mkdir( "drive_c", 0777 );
1176 symlink( "../drive_c", "dosdevices/c:" );
1177 symlink( "/", "dosdevices/z:" );
1178
1179 done:
1180 if (fd_cwd == -1) fd_cwd = open( "dosdevices/c:", O_RDONLY );
1181 fcntl( fd_cwd, F_SETFD, FD_CLOEXEC );
1182 return fd_cwd;
1183 }
1184
1185
1186 /***********************************************************************
1187 * server_connect_error
1188 *
1189 * Try to display a meaningful explanation of why we couldn't connect
1190 * to the server.
1191 */
1192 static void server_connect_error( const char *serverdir )
1193 {
1194 int fd;
1195 struct flock fl;
1196
1197 if ((fd = open( LOCKNAME, O_WRONLY )) == -1)
1198 fatal_error( "for some mysterious reason, the wine server never started.\n" );
1199
1200 fl.l_type = F_WRLCK;
1201 fl.l_whence = SEEK_SET;
1202 fl.l_start = 0;
1203 fl.l_len = 1;
1204 if (fcntl( fd, F_GETLK, &fl ) != -1)
1205 {
1206 if (fl.l_type == F_WRLCK) /* the file is locked */
1207 fatal_error( "a wine server seems to be running, but I cannot connect to it.\n"
1208 " You probably need to kill that process (it might be pid %d).\n",
1209 (int)fl.l_pid );
1210 fatal_error( "for some mysterious reason, the wine server failed to run.\n" );
1211 }
1212 fatal_error( "the file system of '%s' doesn't support locks,\n"
1213 " and there is a 'socket' file in that directory that prevents wine from starting.\n"
1214 " You should make sure no wine server is running, remove that file and try again.\n",
1215 serverdir );
1216 }
1217
1218
1219 /***********************************************************************
1220 * server_connect
1221 *
1222 * Attempt to connect to an existing server socket.
1223 * We need to be in the server directory already.
1224 */
1225 static int server_connect(void)
1226 {
1227 const char *serverdir;
1228 struct sockaddr_un addr;
1229 struct stat st;
1230 int s, slen, retry, fd_cwd;
1231
1232 fd_cwd = setup_config_dir();
1233 serverdir = wine_get_server_dir();
1234
1235 /* chdir to the server directory */
1236 if (chdir( serverdir ) == -1)
1237 {
1238 if (errno != ENOENT) fatal_perror( "chdir to %s", serverdir );
1239 start_server();
1240 if (chdir( serverdir ) == -1) fatal_perror( "chdir to %s", serverdir );
1241 }
1242
1243 /* make sure we are at the right place */
1244 if (stat( ".", &st ) == -1) fatal_perror( "stat %s", serverdir );
1245 if (st.st_uid != getuid()) fatal_error( "'%s' is not owned by you\n", serverdir );
1246 if (st.st_mode & 077) fatal_error( "'%s' must not be accessible by other users\n", serverdir );
1247
1248 for (retry = 0; retry < 6; retry++)
1249 {
1250 /* if not the first try, wait a bit to leave the previous server time to exit */
1251 if (retry)
1252 {
1253 usleep( 100000 * retry * retry );
1254 start_server();
1255 if (lstat( SOCKETNAME, &st ) == -1) continue; /* still no socket, wait a bit more */
1256 }
1257 else if (lstat( SOCKETNAME, &st ) == -1) /* check for an already existing socket */
1258 {
1259 if (errno != ENOENT) fatal_perror( "lstat %s/%s", serverdir, SOCKETNAME );
1260 start_server();
1261 if (lstat( SOCKETNAME, &st ) == -1) continue; /* still no socket, wait a bit more */
1262 }
1263
1264 /* make sure the socket is sane (ISFIFO needed for Solaris) */
1265 if (!S_ISSOCK(st.st_mode) && !S_ISFIFO(st.st_mode))
1266 fatal_error( "'%s/%s' is not a socket\n", serverdir, SOCKETNAME );
1267 if (st.st_uid != getuid())
1268 fatal_error( "'%s/%s' is not owned by you\n", serverdir, SOCKETNAME );
1269
1270 /* try to connect to it */
1271 addr.sun_family = AF_UNIX;
1272 strcpy( addr.sun_path, SOCKETNAME );
1273 slen = sizeof(addr) - sizeof(addr.sun_path) + strlen(addr.sun_path) + 1;
1274 #ifdef HAVE_STRUCT_SOCKADDR_UN_SUN_LEN
1275 addr.sun_len = slen;
1276 #endif
1277 if ((s = socket( AF_UNIX, SOCK_STREAM, 0 )) == -1) fatal_perror( "socket" );
1278 #ifdef SO_PASSCRED
1279 else
1280 {
1281 int enable = 1;
1282 setsockopt( s, SOL_SOCKET, SO_PASSCRED, &enable, sizeof(enable) );
1283 }
1284 #endif
1285 if (connect( s, (struct sockaddr *)&addr, slen ) != -1)
1286 {
1287 /* switch back to the starting directory */
1288 if (fd_cwd != -1)
1289 {
1290 fchdir( fd_cwd );
1291 close( fd_cwd );
1292 }
1293 fcntl( s, F_SETFD, FD_CLOEXEC );
1294 return s;
1295 }
1296 close( s );
1297 }
1298 server_connect_error( serverdir );
1299 }
1300
1301
1302 #ifdef __APPLE__
1303 #include <mach/mach.h>
1304 #include <mach/mach_error.h>
1305 #include <servers/bootstrap.h>
1306
1307 /* send our task port to the server */
1308 static void send_server_task_port(void)
1309 {
1310 mach_port_t bootstrap_port, wineserver_port;
1311 kern_return_t kret;
1312
1313 struct {
1314 mach_msg_header_t header;
1315 mach_msg_body_t body;
1316 mach_msg_port_descriptor_t task_port;
1317 } msg;
1318
1319 if (task_get_bootstrap_port(mach_task_self(), &bootstrap_port) != KERN_SUCCESS) return;
1320
1321 kret = bootstrap_look_up(bootstrap_port, (char*)wine_get_server_dir(), &wineserver_port);
1322 if (kret != KERN_SUCCESS)
1323 fatal_error( "cannot find the server port: 0x%08x\n", kret );
1324
1325 mach_port_deallocate(mach_task_self(), bootstrap_port);
1326
1327 msg.header.msgh_bits = MACH_MSGH_BITS(MACH_MSG_TYPE_COPY_SEND, 0) | MACH_MSGH_BITS_COMPLEX;
1328 msg.header.msgh_size = sizeof(msg);
1329 msg.header.msgh_remote_port = wineserver_port;
1330 msg.header.msgh_local_port = MACH_PORT_NULL;
1331
1332 msg.body.msgh_descriptor_count = 1;
1333 msg.task_port.name = mach_task_self();
1334 msg.task_port.disposition = MACH_MSG_TYPE_COPY_SEND;
1335 msg.task_port.type = MACH_MSG_PORT_DESCRIPTOR;
1336
1337 kret = mach_msg_send(&msg.header);
1338 if (kret != KERN_SUCCESS)
1339 server_protocol_error( "mach_msg_send failed: 0x%08x\n", kret );
1340
1341 mach_port_deallocate(mach_task_self(), wineserver_port);
1342 }
1343 #endif /* __APPLE__ */
1344
1345
1346 /***********************************************************************
1347 * get_unix_tid
1348 *
1349 * Retrieve the Unix tid to use on the server side for the current thread.
1350 */
1351 static int get_unix_tid(void)
1352 {
1353 int ret = -1;
1354 #ifdef HAVE_PTHREAD_GETTHREADID_NP
1355 ret = pthread_getthreadid_np();
1356 #elif defined(linux)
1357 ret = syscall( __NR_gettid );
1358 #elif defined(__sun)
1359 ret = pthread_self();
1360 #elif defined(__APPLE__)
1361 ret = mach_thread_self();
1362 mach_port_deallocate(mach_task_self(), ret);
1363 #elif defined(__NetBSD__)
1364 ret = _lwp_self();
1365 #elif defined(__FreeBSD__)
1366 long lwpid;
1367 thr_self( &lwpid );
1368 ret = lwpid;
1369 #elif defined(__DragonFly__)
1370 ret = lwp_gettid();
1371 #endif
1372 return ret;
1373 }
1374
1375
1376 /***********************************************************************
1377 * server_init_process
1378 *
1379 * Start the server and create the initial socket pair.
1380 */
1381 void server_init_process(void)
1382 {
1383 obj_handle_t version;
1384 const char *env_socket = getenv( "WINESERVERSOCKET" );
1385
1386 server_pid = -1;
1387 if (env_socket)
1388 {
1389 fd_socket = atoi( env_socket );
1390 if (fcntl( fd_socket, F_SETFD, FD_CLOEXEC ) == -1)
1391 fatal_perror( "Bad server socket %d", fd_socket );
1392 unsetenv( "WINESERVERSOCKET" );
1393 }
1394 else
1395 {
1396 const char *arch = getenv( "WINEARCH" );
1397
1398 if (arch && strcmp( arch, "win32" ) && strcmp( arch, "win64" ))
1399 fatal_error( "WINEARCH set to invalid value '%s', it must be either win32 or win64.\n", arch );
1400
1401 fd_socket = server_connect();
1402 }
1403
1404 /* setup the signal mask */
1405 sigemptyset( &server_block_set );
1406 sigaddset( &server_block_set, SIGALRM );
1407 sigaddset( &server_block_set, SIGIO );
1408 sigaddset( &server_block_set, SIGINT );
1409 sigaddset( &server_block_set, SIGHUP );
1410 sigaddset( &server_block_set, SIGUSR1 );
1411 sigaddset( &server_block_set, SIGUSR2 );
1412 sigaddset( &server_block_set, SIGCHLD );
1413 pthread_sigmask( SIG_BLOCK, &server_block_set, NULL );
1414
1415 /* receive the first thread request fd on the main socket */
1416 ntdll_get_thread_data()->request_fd = receive_fd( &version );
1417
1418 #ifdef SO_PASSCRED
1419 /* now that we hopefully received the server_pid, disable SO_PASSCRED */
1420 {
1421 int enable = 0;
1422 setsockopt( fd_socket, SOL_SOCKET, SO_PASSCRED, &enable, sizeof(enable) );
1423 }
1424 #endif
1425
1426 if (version != SERVER_PROTOCOL_VERSION)
1427 server_protocol_error( "version mismatch %d/%d.\n"
1428 "Your %s binary was not upgraded correctly,\n"
1429 "or you have an older one somewhere in your PATH.\n"
1430 "Or maybe the wrong wineserver is still running?\n",
1431 version, SERVER_PROTOCOL_VERSION,
1432 (version > SERVER_PROTOCOL_VERSION) ? "wine" : "wineserver" );
1433 #if defined(__linux__) && defined(HAVE_PRCTL)
1434 /* work around Ubuntu's ptrace breakage */
1435 if (server_pid != -1) prctl( 0x59616d61 /* PR_SET_PTRACER */, server_pid );
1436 #endif
1437 }
1438
1439
1440 /***********************************************************************
1441 * server_init_process_done
1442 */
1443 void server_init_process_done(void)
1444 {
1445 PEB *peb = NtCurrentTeb()->Peb;
1446 IMAGE_NT_HEADERS *nt = RtlImageNtHeader( peb->ImageBaseAddress );
1447 void *entry = (char *)peb->ImageBaseAddress + nt->OptionalHeader.AddressOfEntryPoint;
1448 NTSTATUS status;
1449 int suspend;
1450
1451 #ifdef __APPLE__
1452 send_server_task_port();
1453 #endif
1454
1455 /* Install signal handlers; this cannot be done earlier, since we cannot
1456 * send exceptions to the debugger before the create process event that
1457 * is sent by REQ_INIT_PROCESS_DONE.
1458 * We do need the handlers in place by the time the request is over, so
1459 * we set them up here. If we segfault between here and the server call
1460 * something is very wrong... */
1461 signal_init_process();
1462
1463 /* Signal the parent process to continue */
1464 SERVER_START_REQ( init_process_done )
1465 {
1466 req->module = wine_server_client_ptr( peb->ImageBaseAddress );
1467 #ifdef __i386__
1468 req->ldt_copy = wine_server_client_ptr( &wine_ldt_copy );
1469 #endif
1470 req->entry = wine_server_client_ptr( entry );
1471 req->gui = (nt->OptionalHeader.Subsystem != IMAGE_SUBSYSTEM_WINDOWS_CUI);
1472 status = wine_server_call( req );
1473 suspend = reply->suspend;
1474 }
1475 SERVER_END_REQ;
1476
1477 assert( !status );
1478 signal_start_process( entry, suspend );
1479 }
1480
1481
1482 /***********************************************************************
1483 * server_init_thread
1484 *
1485 * Send an init thread request. Return 0 if OK.
1486 */
1487 size_t server_init_thread( void *entry_point, BOOL *suspend )
1488 {
1489 static const char *cpu_names[] = { "x86", "x86_64", "PowerPC", "ARM", "ARM64" };
1490 static const BOOL is_win64 = (sizeof(void *) > sizeof(int));
1491 const char *arch = getenv( "WINEARCH" );
1492 int ret;
1493 int reply_pipe[2];
1494 struct sigaction sig_act;
1495 size_t info_size;
1496
1497 sig_act.sa_handler = SIG_IGN;
1498 sig_act.sa_flags = 0;
1499 sigemptyset( &sig_act.sa_mask );
1500
1501 /* ignore SIGPIPE so that we get an EPIPE error instead */
1502 sigaction( SIGPIPE, &sig_act, NULL );
1503
1504 /* create the server->client communication pipes */
1505 if (server_pipe( reply_pipe ) == -1) server_protocol_perror( "pipe" );
1506 if (server_pipe( ntdll_get_thread_data()->wait_fd ) == -1) server_protocol_perror( "pipe" );
1507 wine_server_send_fd( reply_pipe[1] );
1508 wine_server_send_fd( ntdll_get_thread_data()->wait_fd[1] );
1509 ntdll_get_thread_data()->reply_fd = reply_pipe[0];
1510 close( reply_pipe[1] );
1511
1512 SERVER_START_REQ( init_thread )
1513 {
1514 req->unix_pid = getpid();
1515 req->unix_tid = get_unix_tid();
1516 req->teb = wine_server_client_ptr( NtCurrentTeb() );
1517 req->entry = wine_server_client_ptr( entry_point );
1518 req->reply_fd = reply_pipe[1];
1519 req->wait_fd = ntdll_get_thread_data()->wait_fd[1];
1520 req->debug_level = (TRACE_ON(server) != 0);
1521 req->cpu = client_cpu;
1522 ret = wine_server_call( req );
1523 NtCurrentTeb()->ClientId.UniqueProcess = ULongToHandle(reply->pid);
1524 NtCurrentTeb()->ClientId.UniqueThread = ULongToHandle(reply->tid);
1525 info_size = reply->info_size;
1526 server_start_time = reply->server_start;
1527 server_cpus = reply->all_cpus;
1528 *suspend = reply->suspend;
1529 }
1530 SERVER_END_REQ;
1531
1532 is_wow64 = !is_win64 && (server_cpus & ((1 << CPU_x86_64) | (1 << CPU_ARM64))) != 0;
1533 ntdll_get_thread_data()->wow64_redir = is_wow64;
1534
1535 switch (ret)
1536 {
1537 case STATUS_SUCCESS:
1538 if (arch)
1539 {
1540 if (!strcmp( arch, "win32" ) && (is_win64 || is_wow64))
1541 fatal_error( "WINEARCH set to win32 but '%s' is a 64-bit installation.\n",
1542 wine_get_config_dir() );
1543 if (!strcmp( arch, "win64" ) && !is_win64 && !is_wow64)
1544 fatal_error( "WINEARCH set to win64 but '%s' is a 32-bit installation.\n",
1545 wine_get_config_dir() );
1546 }
1547 return info_size;
1548 case STATUS_INVALID_IMAGE_WIN_64:
1549 fatal_error( "'%s' is a 32-bit installation, it cannot support 64-bit applications.\n",
1550 wine_get_config_dir() );
1551 case STATUS_NOT_SUPPORTED:
1552 fatal_error( "'%s' is a 64-bit installation, it cannot be used with a 32-bit wineserver.\n",
1553 wine_get_config_dir() );
1554 case STATUS_INVALID_IMAGE_FORMAT:
1555 fatal_error( "wineserver doesn't support the %s architecture\n", cpu_names[client_cpu] );
1556 default:
1557 server_protocol_error( "init_thread failed with status %x\n", ret );
1558 }
1559 }
Windows API implementation