2 * Wine server communication
4 * Copyright (C) 1998 Alexandre Julliard
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.
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.
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
22 #include "wine/port.h"
33 #include <sys/types.h>
34 #ifdef HAVE_SYS_SOCKET_H
35 # include <sys/socket.h>
37 #ifdef HAVE_SYS_WAIT_H
43 #ifdef HAVE_SYS_MMAN_H
46 #ifdef HAVE_SYS_STAT_H
47 # include <sys/stat.h>
57 #define WIN32_NO_STATUS
58 #include "wine/library.h"
59 #include "wine/pthread.h"
60 #include "wine/server.h"
61 #include "wine/debug.h"
62 #include "ntdll_misc.h"
64 WINE_DEFAULT_DEBUG_CHANNEL(server);
66 /* Some versions of glibc don't define this */
71 #define SOCKETNAME "socket" /* name of the socket file */
72 #define LOCKNAME "lock" /* name of the lock file */
74 #ifndef HAVE_STRUCT_MSGHDR_MSG_ACCRIGHTS
75 /* data structure used to pass an fd with sendmsg/recvmsg */
80 size_t len; /* size of structure */
81 int level; /* SOL_SOCKET */
82 int type; /* SCM_RIGHTS */
84 int fd; /* fd to pass */
86 #endif /* HAVE_STRUCT_MSGHDR_MSG_ACCRIGHTS */
88 abs_time_t server_start_time = { 0, 0 }; /* time of server startup */
90 extern struct wine_pthread_functions pthread_functions;
92 static sigset_t block_set; /* signals to block during server calls */
93 static int fd_socket = -1; /* socket to exchange file descriptors with the server */
95 static RTL_CRITICAL_SECTION fd_cache_section;
96 static RTL_CRITICAL_SECTION_DEBUG critsect_debug =
98 0, 0, &fd_cache_section,
99 { &critsect_debug.ProcessLocksList, &critsect_debug.ProcessLocksList },
100 0, 0, { (DWORD_PTR)(__FILE__ ": fd_cache_section") }
102 static RTL_CRITICAL_SECTION fd_cache_section = { &critsect_debug, -1, 0, 0, 0, 0 };
106 static void fatal_error( const char *err, ... ) __attribute__((noreturn, format(printf,1,2)));
107 static void fatal_perror( const char *err, ... ) __attribute__((noreturn, format(printf,1,2)));
108 static void server_connect_error( const char *serverdir ) __attribute__((noreturn));
111 /* die on a fatal error; use only during initialization */
112 static void fatal_error( const char *err, ... )
116 va_start( args, err );
117 fprintf( stderr, "wine: " );
118 vfprintf( stderr, err, args );
123 /* die on a fatal error; use only during initialization */
124 static void fatal_perror( const char *err, ... )
128 va_start( args, err );
129 fprintf( stderr, "wine: " );
130 vfprintf( stderr, err, args );
137 /***********************************************************************
140 void server_exit_thread( int status )
142 struct wine_pthread_thread_info info;
147 RemoveEntryList( &NtCurrentTeb()->TlsLinks );
150 info.stack_base = NtCurrentTeb()->DeallocationStack;
151 info.teb_base = NtCurrentTeb();
152 info.teb_sel = wine_get_fs();
153 info.exit_status = status;
155 fds[0] = ntdll_get_thread_data()->wait_fd[0];
156 fds[1] = ntdll_get_thread_data()->wait_fd[1];
157 fds[2] = ntdll_get_thread_data()->reply_fd;
158 fds[3] = ntdll_get_thread_data()->request_fd;
159 pthread_functions.sigprocmask( SIG_BLOCK, &block_set, NULL );
162 NtFreeVirtualMemory( GetCurrentProcess(), &info.stack_base, &size, MEM_RELEASE | MEM_SYSTEM );
163 info.stack_size = size;
166 NtFreeVirtualMemory( GetCurrentProcess(), &info.teb_base, &size, MEM_RELEASE | MEM_SYSTEM );
167 info.teb_size = size;
173 pthread_functions.exit_thread( &info );
177 /***********************************************************************
178 * server_abort_thread
180 void server_abort_thread( int status )
182 pthread_functions.sigprocmask( SIG_BLOCK, &block_set, NULL );
183 close( ntdll_get_thread_data()->wait_fd[0] );
184 close( ntdll_get_thread_data()->wait_fd[1] );
185 close( ntdll_get_thread_data()->reply_fd );
186 close( ntdll_get_thread_data()->request_fd );
187 pthread_functions.abort_thread( status );
191 /***********************************************************************
192 * server_protocol_error
194 void server_protocol_error( const char *err, ... )
198 va_start( args, err );
199 fprintf( stderr, "wine client error:%x: ", GetCurrentThreadId() );
200 vfprintf( stderr, err, args );
202 server_abort_thread(1);
206 /***********************************************************************
207 * server_protocol_perror
209 void server_protocol_perror( const char *err )
211 fprintf( stderr, "wine client error:%x: ", GetCurrentThreadId() );
213 server_abort_thread(1);
217 /***********************************************************************
220 * Send a request to the server.
222 static void send_request( const struct __server_request_info *req )
227 if (!req->u.req.request_header.request_size)
229 if ((ret = write( ntdll_get_thread_data()->request_fd, &req->u.req,
230 sizeof(req->u.req) )) == sizeof(req->u.req)) return;
235 struct iovec vec[__SERVER_MAX_DATA+1];
237 vec[0].iov_base = (void *)&req->u.req;
238 vec[0].iov_len = sizeof(req->u.req);
239 for (i = 0; i < req->data_count; i++)
241 vec[i+1].iov_base = (void *)req->data[i].ptr;
242 vec[i+1].iov_len = req->data[i].size;
244 if ((ret = writev( ntdll_get_thread_data()->request_fd, vec, i+1 )) ==
245 req->u.req.request_header.request_size + sizeof(req->u.req)) return;
248 if (ret >= 0) server_protocol_error( "partial write %d\n", ret );
249 if (errno == EPIPE) server_abort_thread(0);
250 server_protocol_perror( "write" );
254 /***********************************************************************
257 * Read data from the reply buffer; helper for wait_reply.
259 static void read_reply_data( void *buffer, size_t size )
265 if ((ret = read( ntdll_get_thread_data()->reply_fd, buffer, size )) > 0)
267 if (!(size -= ret)) return;
268 buffer = (char *)buffer + ret;
272 if (errno == EINTR) continue;
273 if (errno == EPIPE) break;
274 server_protocol_perror("read");
276 /* the server closed the connection; time to die... */
277 server_abort_thread(0);
281 /***********************************************************************
284 * Wait for a reply from the server.
286 inline static void wait_reply( struct __server_request_info *req )
288 read_reply_data( &req->u.reply, sizeof(req->u.reply) );
289 if (req->u.reply.reply_header.reply_size)
290 read_reply_data( req->reply_data, req->u.reply.reply_header.reply_size );
294 /***********************************************************************
295 * wine_server_call (NTDLL.@)
297 * Perform a server call.
300 * req_ptr [I/O] Function dependent data
303 * Depends on server function being called, but usually an NTSTATUS code.
306 * Use the SERVER_START_REQ and SERVER_END_REQ to help you fill out the
307 * server request structure for the particular call. E.g:
308 *| SERVER_START_REQ( event_op )
310 *| req->handle = handle;
311 *| req->op = SET_EVENT;
312 *| ret = wine_server_call( req );
316 unsigned int wine_server_call( void *req_ptr )
318 struct __server_request_info * const req = req_ptr;
321 pthread_functions.sigprocmask( SIG_BLOCK, &block_set, &old_set );
324 pthread_functions.sigprocmask( SIG_SETMASK, &old_set, NULL );
325 return req->u.reply.reply_header.error;
329 /***********************************************************************
330 * wine_server_send_fd (NTDLL.@)
332 * Send a file descriptor to the server.
335 * fd [I] file descriptor to send
340 void wine_server_send_fd( int fd )
342 #ifndef HAVE_STRUCT_MSGHDR_MSG_ACCRIGHTS
346 struct msghdr msghdr;
350 vec.iov_base = (void *)&data;
351 vec.iov_len = sizeof(data);
353 msghdr.msg_name = NULL;
354 msghdr.msg_namelen = 0;
355 msghdr.msg_iov = &vec;
356 msghdr.msg_iovlen = 1;
358 #ifdef HAVE_STRUCT_MSGHDR_MSG_ACCRIGHTS
359 msghdr.msg_accrights = (void *)&fd;
360 msghdr.msg_accrightslen = sizeof(fd);
361 #else /* HAVE_STRUCT_MSGHDR_MSG_ACCRIGHTS */
362 cmsg.header.len = sizeof(cmsg.header) + sizeof(fd);
363 cmsg.header.level = SOL_SOCKET;
364 cmsg.header.type = SCM_RIGHTS;
366 msghdr.msg_control = &cmsg;
367 msghdr.msg_controllen = sizeof(cmsg.header) + sizeof(fd);
368 msghdr.msg_flags = 0;
369 #endif /* HAVE_STRUCT_MSGHDR_MSG_ACCRIGHTS */
371 data.tid = GetCurrentThreadId();
376 if ((ret = sendmsg( fd_socket, &msghdr, 0 )) == sizeof(data)) return;
377 if (ret >= 0) server_protocol_error( "partial write %d\n", ret );
378 if (errno == EINTR) continue;
379 if (errno == EPIPE) server_abort_thread(0);
380 server_protocol_perror( "sendmsg" );
385 /***********************************************************************
388 * Receive a file descriptor passed from the server.
390 static int receive_fd( obj_handle_t *handle )
395 #ifdef HAVE_STRUCT_MSGHDR_MSG_ACCRIGHTS
396 struct msghdr msghdr;
399 msghdr.msg_accrights = (void *)&fd;
400 msghdr.msg_accrightslen = sizeof(fd);
401 #else /* HAVE_STRUCT_MSGHDR_MSG_ACCRIGHTS */
402 struct msghdr msghdr;
405 cmsg.header.len = sizeof(cmsg.header) + sizeof(fd);
406 cmsg.header.level = SOL_SOCKET;
407 cmsg.header.type = SCM_RIGHTS;
409 msghdr.msg_control = &cmsg;
410 msghdr.msg_controllen = sizeof(cmsg.header) + sizeof(fd);
411 msghdr.msg_flags = 0;
412 #endif /* HAVE_STRUCT_MSGHDR_MSG_ACCRIGHTS */
414 msghdr.msg_name = NULL;
415 msghdr.msg_namelen = 0;
416 msghdr.msg_iov = &vec;
417 msghdr.msg_iovlen = 1;
418 vec.iov_base = (void *)handle;
419 vec.iov_len = sizeof(*handle);
423 if ((ret = recvmsg( fd_socket, &msghdr, 0 )) > 0)
425 #ifndef HAVE_STRUCT_MSGHDR_MSG_ACCRIGHTS
428 if (fd != -1) fcntl( fd, F_SETFD, 1 ); /* set close on exec flag */
432 if (errno == EINTR) continue;
433 if (errno == EPIPE) break;
434 server_protocol_perror("recvmsg");
436 /* the server closed the connection; time to die... */
437 server_abort_thread(0);
441 inline static unsigned int handle_to_index( obj_handle_t handle )
443 return ((unsigned long)handle >> 2) - 1;
446 struct fd_cache_entry
449 enum server_fd_type type;
452 static struct fd_cache_entry *fd_cache;
453 static unsigned int fd_cache_size;
455 /***********************************************************************
458 * Caller must hold fd_cache_section.
460 static int add_fd_to_cache( obj_handle_t handle, int fd, enum server_fd_type type )
462 unsigned int idx = handle_to_index( handle );
464 if (idx >= fd_cache_size)
466 unsigned int i, size = max( 32, fd_cache_size * 2 );
467 struct fd_cache_entry *new_cache;
469 if (size <= idx) size = idx + 1;
471 new_cache = RtlReAllocateHeap( GetProcessHeap(), 0, fd_cache, size*sizeof(fd_cache[0]) );
473 new_cache = RtlAllocateHeap( GetProcessHeap(), 0, size*sizeof(fd_cache[0]) );
477 for (i = fd_cache_size; i < size; i++) new_cache[i].fd = -1;
478 fd_cache = new_cache;
479 fd_cache_size = size;
482 if (idx < fd_cache_size)
484 assert( fd_cache[idx].fd == -1 );
485 fd_cache[idx].fd = fd;
486 fd_cache[idx].type = type;
487 TRACE("added %p (%d) type %d to cache\n", handle, fd, type );
494 /***********************************************************************
497 * Caller must hold fd_cache_section.
499 static inline int get_cached_fd( obj_handle_t handle, enum server_fd_type *type )
501 unsigned int idx = handle_to_index( handle );
504 if (idx < fd_cache_size)
506 fd = fd_cache[idx].fd;
507 if (type) *type = fd_cache[idx].type;
513 /***********************************************************************
514 * server_remove_fd_from_cache
516 int server_remove_fd_from_cache( obj_handle_t handle )
518 unsigned int idx = handle_to_index( handle );
521 RtlEnterCriticalSection( &fd_cache_section );
522 if (idx < fd_cache_size)
524 fd = fd_cache[idx].fd;
525 fd_cache[idx].fd = -1;
527 RtlLeaveCriticalSection( &fd_cache_section );
532 TRACE("removed %p (%d) from cache\n", handle, fd );
538 /***********************************************************************
541 * The returned unix_fd should be closed iff needs_close is non-zero.
543 int server_get_unix_fd( obj_handle_t handle, unsigned int access, int *unix_fd,
544 int *needs_close, enum server_fd_type *type, int *flags )
546 obj_handle_t fd_handle;
547 int ret = 0, removable = 0, fd;
552 RtlEnterCriticalSection( &fd_cache_section );
554 fd = get_cached_fd( handle, type );
555 if (fd != -1 && !flags) goto done;
557 SERVER_START_REQ( get_handle_fd )
559 req->handle = handle;
560 req->access = access;
561 req->cached = (fd != -1);
562 if (!(ret = wine_server_call( req )))
564 removable = reply->flags & FD_FLAG_REMOVABLE;
565 if (type) *type = reply->type;
566 if (flags) *flags = reply->flags;
569 if ((fd = receive_fd( &fd_handle )) != -1)
571 assert( fd_handle == handle );
572 if (!removable) add_fd_to_cache( handle, fd, reply->type );
574 else ret = STATUS_TOO_MANY_OPENED_FILES;
581 RtlLeaveCriticalSection( &fd_cache_section );
582 if (!ret) *unix_fd = fd;
587 /***********************************************************************
588 * wine_server_fd_to_handle (NTDLL.@)
590 * Allocate a file handle for a Unix file descriptor.
593 * fd [I] Unix file descriptor.
594 * access [I] Win32 access flags.
595 * attributes [I] Object attributes.
596 * handle [O] Address where Wine file handle will be stored.
601 int wine_server_fd_to_handle( int fd, unsigned int access, unsigned int attributes, obj_handle_t *handle )
606 wine_server_send_fd( fd );
608 SERVER_START_REQ( alloc_file_handle )
610 req->access = access;
611 req->attributes = attributes;
613 if (!(ret = wine_server_call( req ))) *handle = reply->handle;
620 /***********************************************************************
621 * wine_server_handle_to_fd (NTDLL.@)
623 * Retrieve the file descriptor corresponding to a file handle.
626 * handle [I] Wine file handle.
627 * access [I] Win32 file access rights requested.
628 * unix_fd [O] Address where Unix file descriptor will be stored.
629 * flags [O] Address where the Unix flags associated with file will be stored. Optional.
634 int wine_server_handle_to_fd( obj_handle_t handle, unsigned int access, int *unix_fd, int *flags )
636 int needs_close, ret = server_get_unix_fd( handle, access, unix_fd, &needs_close, NULL, flags );
638 if (!ret && !needs_close)
640 if ((*unix_fd = dup(*unix_fd)) == -1) ret = FILE_GetNtStatus();
646 /***********************************************************************
647 * wine_server_release_fd (NTDLL.@)
649 * Release the Unix file descriptor returned by wine_server_handle_to_fd.
652 * handle [I] Wine file handle.
653 * unix_fd [I] Unix file descriptor to release.
658 void wine_server_release_fd( obj_handle_t handle, int unix_fd )
664 /***********************************************************************
667 * Start a new wine server.
669 static void start_server(void)
671 static int started; /* we only try once */
673 static char wineserver[] = "server/wineserver";
674 static char debug[] = "-d";
680 if (pid == -1) fatal_perror( "fork" );
683 argv[0] = wineserver;
684 argv[1] = TRACE_ON(server) ? debug : NULL;
686 wine_exec_wine_binary( argv[0], argv, getenv("WINESERVER") );
687 fatal_error( "could not exec wineserver\n" );
689 waitpid( pid, &status, 0 );
690 status = WIFEXITED(status) ? WEXITSTATUS(status) : 1;
691 if (status == 2) return; /* server lock held by someone else, will retry later */
692 if (status) exit(status); /* server failed */
698 /***********************************************************************
699 * server_connect_error
701 * Try to display a meaningful explanation of why we couldn't connect
704 static void server_connect_error( const char *serverdir )
709 if ((fd = open( LOCKNAME, O_WRONLY )) == -1)
710 fatal_error( "for some mysterious reason, the wine server never started.\n" );
713 fl.l_whence = SEEK_SET;
716 if (fcntl( fd, F_GETLK, &fl ) != -1)
718 if (fl.l_type == F_WRLCK) /* the file is locked */
719 fatal_error( "a wine server seems to be running, but I cannot connect to it.\n"
720 " You probably need to kill that process (it might be pid %d).\n",
722 fatal_error( "for some mysterious reason, the wine server failed to run.\n" );
724 fatal_error( "the file system of '%s' doesn't support locks,\n"
725 " and there is a 'socket' file in that directory that prevents wine from starting.\n"
726 " You should make sure no wine server is running, remove that file and try again.\n",
731 /***********************************************************************
734 * Attempt to connect to an existing server socket.
735 * We need to be in the server directory already.
737 static int server_connect( const char *serverdir )
739 struct sockaddr_un addr;
741 int s, slen, retry, fd_cwd;
743 /* retrieve the current directory */
744 fd_cwd = open( ".", O_RDONLY );
745 if (fd_cwd != -1) fcntl( fd_cwd, F_SETFD, 1 ); /* set close on exec flag */
747 /* chdir to the server directory */
748 if (chdir( serverdir ) == -1)
750 if (errno != ENOENT) fatal_perror( "chdir to %s", serverdir );
752 if (chdir( serverdir ) == -1) fatal_perror( "chdir to %s", serverdir );
755 /* make sure we are at the right place */
756 if (stat( ".", &st ) == -1) fatal_perror( "stat %s", serverdir );
757 if (st.st_uid != getuid()) fatal_error( "'%s' is not owned by you\n", serverdir );
758 if (st.st_mode & 077) fatal_error( "'%s' must not be accessible by other users\n", serverdir );
760 for (retry = 0; retry < 6; retry++)
762 /* if not the first try, wait a bit to leave the previous server time to exit */
765 usleep( 100000 * retry * retry );
767 if (lstat( SOCKETNAME, &st ) == -1) continue; /* still no socket, wait a bit more */
769 else if (lstat( SOCKETNAME, &st ) == -1) /* check for an already existing socket */
771 if (errno != ENOENT) fatal_perror( "lstat %s/%s", serverdir, SOCKETNAME );
773 if (lstat( SOCKETNAME, &st ) == -1) continue; /* still no socket, wait a bit more */
776 /* make sure the socket is sane (ISFIFO needed for Solaris) */
777 if (!S_ISSOCK(st.st_mode) && !S_ISFIFO(st.st_mode))
778 fatal_error( "'%s/%s' is not a socket\n", serverdir, SOCKETNAME );
779 if (st.st_uid != getuid())
780 fatal_error( "'%s/%s' is not owned by you\n", serverdir, SOCKETNAME );
782 /* try to connect to it */
783 addr.sun_family = AF_UNIX;
784 strcpy( addr.sun_path, SOCKETNAME );
785 slen = sizeof(addr) - sizeof(addr.sun_path) + strlen(addr.sun_path) + 1;
786 #ifdef HAVE_STRUCT_SOCKADDR_UN_SUN_LEN
789 if ((s = socket( AF_UNIX, SOCK_STREAM, 0 )) == -1) fatal_perror( "socket" );
790 if (connect( s, (struct sockaddr *)&addr, slen ) != -1)
792 /* switch back to the starting directory */
798 fcntl( s, F_SETFD, 1 ); /* set close on exec flag */
803 server_connect_error( serverdir );
807 /***********************************************************************
810 * Remove a directory and all its contents; helper for create_config_dir.
812 static void rm_rf( const char *path )
814 int err = errno; /* preserve errno */
820 if (!(buffer = malloc( strlen(path) + 256 + 1 ))) goto done;
821 strcpy( buffer, path );
822 p = buffer + strlen(buffer);
825 if ((dir = opendir( path )))
827 while ((de = readdir( dir )))
829 if (!strcmp( de->d_name, "." ) || !strcmp( de->d_name, ".." )) continue;
830 strcpy( p, de->d_name );
831 if (unlink( buffer ) != -1) continue;
832 if (errno == EISDIR ||
833 (errno == EPERM && !lstat( buffer, &st ) && S_ISDIR(st.st_mode)))
835 /* recurse in the sub-directory */
848 /***********************************************************************
851 * Create the wine configuration dir (~/.wine).
853 static void create_config_dir(void)
855 const char *config_dir = wine_get_config_dir();
860 if (!(tmp_dir = malloc( strlen(config_dir) + sizeof("-XXXXXX") )))
861 fatal_error( "out of memory\n" );
862 strcpy( tmp_dir, config_dir );
863 strcat( tmp_dir, "-XXXXXX" );
864 if ((fd = mkstemps( tmp_dir, 0 )) == -1)
865 fatal_perror( "can't get temp file name for %s", config_dir );
868 if (mkdir( tmp_dir, 0777 ) == -1)
869 fatal_perror( "cannot create temp dir %s", tmp_dir );
871 MESSAGE( "wine: creating configuration directory '%s'...\n", config_dir );
876 fatal_perror( "fork" );
881 static char argv0[] = "tools/wineprefixcreate",
884 argv3[] = "--prefix";
892 wine_exec_wine_binary( argv[0], argv, NULL );
894 fatal_perror( "could not exec wineprefixcreate" );
900 while ((wret = waitpid( pid, &status, 0 )) != pid)
902 if (wret == -1 && errno != EINTR) fatal_perror( "wait4" );
904 if (!WIFEXITED(status) || WEXITSTATUS(status))
907 fatal_error( "wineprefixcreate failed while creating '%s'.\n", config_dir );
910 if (rename( tmp_dir, config_dir ) == -1)
913 if (errno != EEXIST && errno != ENOTEMPTY)
914 fatal_perror( "rename '%s' to '%s'", tmp_dir, config_dir );
915 /* else it was probably created by a concurrent wine process */
918 MESSAGE( "wine: '%s' created successfully.\n", config_dir );
922 /***********************************************************************
923 * server_init_process
925 * Start the server and create the initial socket pair.
927 void server_init_process(void)
929 obj_handle_t dummy_handle;
930 const char *env_socket = getenv( "WINESERVERSOCKET" );
934 fd_socket = atoi( env_socket );
935 if (fcntl( fd_socket, F_SETFD, 1 ) == -1)
936 fatal_perror( "Bad server socket %d", fd_socket );
940 const char *server_dir = wine_get_server_dir();
942 if (!server_dir) /* this means the config dir doesn't exist */
945 server_dir = wine_get_server_dir();
948 /* connect to the server */
949 fd_socket = server_connect( server_dir );
952 /* setup the signal mask */
953 sigemptyset( &block_set );
954 sigaddset( &block_set, SIGALRM );
955 sigaddset( &block_set, SIGIO );
956 sigaddset( &block_set, SIGINT );
957 sigaddset( &block_set, SIGHUP );
958 sigaddset( &block_set, SIGUSR1 );
959 sigaddset( &block_set, SIGUSR2 );
960 sigaddset( &block_set, SIGCHLD );
962 /* receive the first thread request fd on the main socket */
963 ntdll_get_thread_data()->request_fd = receive_fd( &dummy_handle );
967 /***********************************************************************
970 * Send an init thread request. Return 0 if OK.
972 size_t server_init_thread( int unix_pid, int unix_tid, void *entry_point )
976 struct sigaction sig_act;
979 sig_act.sa_handler = SIG_IGN;
980 sig_act.sa_flags = 0;
981 sigemptyset( &sig_act.sa_mask );
983 /* ignore SIGPIPE so that we get an EPIPE error instead */
984 sigaction( SIGPIPE, &sig_act, NULL );
985 /* automatic child reaping to avoid zombies */
987 sig_act.sa_flags |= SA_NOCLDWAIT;
989 sigaction( SIGCHLD, &sig_act, NULL );
991 /* create the server->client communication pipes */
992 if (pipe( reply_pipe ) == -1) server_protocol_perror( "pipe" );
993 if (pipe( ntdll_get_thread_data()->wait_fd ) == -1) server_protocol_perror( "pipe" );
994 wine_server_send_fd( reply_pipe[1] );
995 wine_server_send_fd( ntdll_get_thread_data()->wait_fd[1] );
996 ntdll_get_thread_data()->reply_fd = reply_pipe[0];
997 close( reply_pipe[1] );
999 /* set close on exec flag */
1000 fcntl( ntdll_get_thread_data()->reply_fd, F_SETFD, 1 );
1001 fcntl( ntdll_get_thread_data()->wait_fd[0], F_SETFD, 1 );
1002 fcntl( ntdll_get_thread_data()->wait_fd[1], F_SETFD, 1 );
1004 SERVER_START_REQ( init_thread )
1006 req->unix_pid = unix_pid;
1007 req->unix_tid = unix_tid;
1008 req->teb = NtCurrentTeb();
1009 req->peb = NtCurrentTeb()->Peb;
1010 req->entry = entry_point;
1011 req->ldt_copy = &wine_ldt_copy;
1012 req->reply_fd = reply_pipe[1];
1013 req->wait_fd = ntdll_get_thread_data()->wait_fd[1];
1014 req->debug_level = (TRACE_ON(server) != 0);
1015 ret = wine_server_call( req );
1016 NtCurrentTeb()->ClientId.UniqueProcess = (HANDLE)reply->pid;
1017 NtCurrentTeb()->ClientId.UniqueThread = (HANDLE)reply->tid;
1018 info_size = reply->info_size;
1019 version = reply->version;
1020 server_start_time = reply->server_start;
1024 if (ret) server_protocol_error( "init_thread failed with status %x\n", ret );
1025 if (version != SERVER_PROTOCOL_VERSION)
1026 server_protocol_error( "version mismatch %d/%d.\n"
1027 "Your %s binary was not upgraded correctly,\n"
1028 "or you have an older one somewhere in your PATH.\n"
1029 "Or maybe the wrong wineserver is still running?\n",
1030 version, SERVER_PROTOCOL_VERSION,
1031 (version > SERVER_PROTOCOL_VERSION) ? "wine" : "wineserver" );