/* * Wine server communication * * Copyright (C) 1998 Alexandre Julliard * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA */ #include "config.h" #include "wine/port.h" #include <assert.h> #include <ctype.h> #ifdef HAVE_DIRENT_H # include <dirent.h> #endif #include <errno.h> #include <fcntl.h> #ifdef HAVE_LWP_H #include <lwp.h> #endif #ifdef HAVE_PTHREAD_NP_H # include <pthread_np.h> #endif #include <signal.h> #include <stdarg.h> #include <stdio.h> #include <string.h> #include <sys/types.h> #ifdef HAVE_SYS_SOCKET_H # include <sys/socket.h> #endif #ifdef HAVE_SYS_WAIT_H #include <sys/wait.h> #endif #ifdef HAVE_SYS_UN_H #include <sys/un.h> #endif #ifdef HAVE_SYS_MMAN_H #include <sys/mman.h> #endif #ifdef HAVE_SYS_PRCTL_H # include <sys/prctl.h> #endif #ifdef HAVE_SYS_STAT_H # include <sys/stat.h> #endif #ifdef HAVE_SYS_SYSCALL_H # include <sys/syscall.h> #endif #ifdef HAVE_SYS_UIO_H #include <sys/uio.h> #endif #ifdef HAVE_SYS_THR_H #include <sys/ucontext.h> #include <sys/thr.h> #endif #ifdef HAVE_UNISTD_H # include <unistd.h> #endif #include "ntstatus.h" #define WIN32_NO_STATUS #include "wine/library.h" #include "wine/server.h" #include "wine/debug.h" #include "ntdll_misc.h" WINE_DEFAULT_DEBUG_CHANNEL(server); /* Some versions of glibc don't define this */ #ifndef SCM_RIGHTS #define SCM_RIGHTS 1 #endif #ifndef MSG_CMSG_CLOEXEC #define MSG_CMSG_CLOEXEC 0 #endif #define SOCKETNAME "socket" /* name of the socket file */ #define LOCKNAME "lock" /* name of the lock file */ #ifdef __i386__ static const enum cpu_type client_cpu = CPU_x86; #elif defined(__x86_64__) static const enum cpu_type client_cpu = CPU_x86_64; #elif defined(__powerpc__) static const enum cpu_type client_cpu = CPU_POWERPC; #elif defined(__arm__) static const enum cpu_type client_cpu = CPU_ARM; #elif defined(__aarch64__) static const enum cpu_type client_cpu = CPU_ARM64; #else #error Unsupported CPU #endif unsigned int server_cpus = 0; int is_wow64 = FALSE; timeout_t server_start_time = 0; /* time of server startup */ sigset_t server_block_set; /* signals to block during server calls */ static int fd_socket = -1; /* socket to exchange file descriptors with the server */ static pid_t server_pid; static RTL_CRITICAL_SECTION fd_cache_section; static RTL_CRITICAL_SECTION_DEBUG critsect_debug = { 0, 0, &fd_cache_section, { &critsect_debug.ProcessLocksList, &critsect_debug.ProcessLocksList }, 0, 0, { (DWORD_PTR)(__FILE__ ": fd_cache_section") } }; static RTL_CRITICAL_SECTION fd_cache_section = { &critsect_debug, -1, 0, 0, 0, 0 }; #ifdef __GNUC__ static void fatal_error( const char *err, ... ) __attribute__((noreturn, format(printf,1,2))); static void fatal_perror( const char *err, ... ) __attribute__((noreturn, format(printf,1,2))); static void server_connect_error( const char *serverdir ) __attribute__((noreturn)); #endif /* die on a fatal error; use only during initialization */ static void fatal_error( const char *err, ... ) { va_list args; va_start( args, err ); fprintf( stderr, "wine: " ); vfprintf( stderr, err, args ); va_end( args ); exit(1); } /* die on a fatal error; use only during initialization */ static void fatal_perror( const char *err, ... ) { va_list args; va_start( args, err ); fprintf( stderr, "wine: " ); vfprintf( stderr, err, args ); perror( " " ); va_end( args ); exit(1); } /*********************************************************************** * server_protocol_error */ void server_protocol_error( const char *err, ... ) { va_list args; va_start( args, err ); fprintf( stderr, "wine client error:%x: ", GetCurrentThreadId() ); vfprintf( stderr, err, args ); va_end( args ); abort_thread(1); } /*********************************************************************** * server_protocol_perror */ void server_protocol_perror( const char *err ) { fprintf( stderr, "wine client error:%x: ", GetCurrentThreadId() ); perror( err ); abort_thread(1); } /*********************************************************************** * send_request * * Send a request to the server. */ static unsigned int send_request( const struct __server_request_info *req ) { unsigned int i; int ret; if (!req->u.req.request_header.request_size) { if ((ret = write( ntdll_get_thread_data()->request_fd, &req->u.req, sizeof(req->u.req) )) == sizeof(req->u.req)) return STATUS_SUCCESS; } else { struct iovec vec[__SERVER_MAX_DATA+1]; vec[0].iov_base = (void *)&req->u.req; vec[0].iov_len = sizeof(req->u.req); for (i = 0; i < req->data_count; i++) { vec[i+1].iov_base = (void *)req->data[i].ptr; vec[i+1].iov_len = req->data[i].size; } if ((ret = writev( ntdll_get_thread_data()->request_fd, vec, i+1 )) == req->u.req.request_header.request_size + sizeof(req->u.req)) return STATUS_SUCCESS; } if (ret >= 0) server_protocol_error( "partial write %d\n", ret ); if (errno == EPIPE) abort_thread(0); if (errno == EFAULT) return STATUS_ACCESS_VIOLATION; server_protocol_perror( "write" ); } /*********************************************************************** * read_reply_data * * Read data from the reply buffer; helper for wait_reply. */ static void read_reply_data( void *buffer, size_t size ) { int ret; for (;;) { if ((ret = read( ntdll_get_thread_data()->reply_fd, buffer, size )) > 0) { if (!(size -= ret)) return; buffer = (char *)buffer + ret; continue; } if (!ret) break; if (errno == EINTR) continue; if (errno == EPIPE) break; server_protocol_perror("read"); } /* the server closed the connection; time to die... */ abort_thread(0); } /*********************************************************************** * wait_reply * * Wait for a reply from the server. */ static inline unsigned int wait_reply( struct __server_request_info *req ) { read_reply_data( &req->u.reply, sizeof(req->u.reply) ); if (req->u.reply.reply_header.reply_size) read_reply_data( req->reply_data, req->u.reply.reply_header.reply_size ); return req->u.reply.reply_header.error; } /*********************************************************************** * wine_server_call (NTDLL.@) * * Perform a server call. * * PARAMS * req_ptr [I/O] Function dependent data * * RETURNS * Depends on server function being called, but usually an NTSTATUS code. * * NOTES * Use the SERVER_START_REQ and SERVER_END_REQ to help you fill out the * server request structure for the particular call. E.g: *| SERVER_START_REQ( event_op ) *| { *| req->handle = handle; *| req->op = SET_EVENT; *| ret = wine_server_call( req ); *| } *| SERVER_END_REQ; */ unsigned int wine_server_call( void *req_ptr ) { struct __server_request_info * const req = req_ptr; sigset_t old_set; unsigned int ret; pthread_sigmask( SIG_BLOCK, &server_block_set, &old_set ); ret = send_request( req ); if (!ret) ret = wait_reply( req ); pthread_sigmask( SIG_SETMASK, &old_set, NULL ); return ret; } /*********************************************************************** * server_enter_uninterrupted_section */ void server_enter_uninterrupted_section( RTL_CRITICAL_SECTION *cs, sigset_t *sigset ) { pthread_sigmask( SIG_BLOCK, &server_block_set, sigset ); RtlEnterCriticalSection( cs ); } /*********************************************************************** * server_leave_uninterrupted_section */ void server_leave_uninterrupted_section( RTL_CRITICAL_SECTION *cs, sigset_t *sigset ) { RtlLeaveCriticalSection( cs ); pthread_sigmask( SIG_SETMASK, sigset, NULL ); } /*********************************************************************** * wine_server_send_fd (NTDLL.@) * * Send a file descriptor to the server. * * PARAMS * fd [I] file descriptor to send * * RETURNS * nothing */ void CDECL wine_server_send_fd( int fd ) { struct send_fd data; struct msghdr msghdr; struct iovec vec; int ret; #ifdef HAVE_STRUCT_MSGHDR_MSG_ACCRIGHTS msghdr.msg_accrights = (void *)&fd; msghdr.msg_accrightslen = sizeof(fd); #else /* HAVE_STRUCT_MSGHDR_MSG_ACCRIGHTS */ char cmsg_buffer[256]; struct cmsghdr *cmsg; msghdr.msg_control = cmsg_buffer; msghdr.msg_controllen = sizeof(cmsg_buffer); msghdr.msg_flags = 0; cmsg = CMSG_FIRSTHDR( &msghdr ); cmsg->cmsg_len = CMSG_LEN( sizeof(fd) ); cmsg->cmsg_level = SOL_SOCKET; cmsg->cmsg_type = SCM_RIGHTS; *(int *)CMSG_DATA(cmsg) = fd; msghdr.msg_controllen = cmsg->cmsg_len; #endif /* HAVE_STRUCT_MSGHDR_MSG_ACCRIGHTS */ msghdr.msg_name = NULL; msghdr.msg_namelen = 0; msghdr.msg_iov = &vec; msghdr.msg_iovlen = 1; vec.iov_base = (void *)&data; vec.iov_len = sizeof(data); data.tid = GetCurrentThreadId(); data.fd = fd; for (;;) { if ((ret = sendmsg( fd_socket, &msghdr, 0 )) == sizeof(data)) return; if (ret >= 0) server_protocol_error( "partial write %d\n", ret ); if (errno == EINTR) continue; if (errno == EPIPE) abort_thread(0); server_protocol_perror( "sendmsg" ); } } /*********************************************************************** * receive_fd * * Receive a file descriptor passed from the server. */ static int receive_fd( obj_handle_t *handle ) { struct iovec vec; struct msghdr msghdr; int ret, fd = -1; #ifdef HAVE_STRUCT_MSGHDR_MSG_ACCRIGHTS msghdr.msg_accrights = (void *)&fd; msghdr.msg_accrightslen = sizeof(fd); #else /* HAVE_STRUCT_MSGHDR_MSG_ACCRIGHTS */ char cmsg_buffer[256]; msghdr.msg_control = cmsg_buffer; msghdr.msg_controllen = sizeof(cmsg_buffer); msghdr.msg_flags = 0; #endif /* HAVE_STRUCT_MSGHDR_MSG_ACCRIGHTS */ msghdr.msg_name = NULL; msghdr.msg_namelen = 0; msghdr.msg_iov = &vec; msghdr.msg_iovlen = 1; vec.iov_base = (void *)handle; vec.iov_len = sizeof(*handle); for (;;) { if ((ret = recvmsg( fd_socket, &msghdr, MSG_CMSG_CLOEXEC )) > 0) { #ifndef HAVE_STRUCT_MSGHDR_MSG_ACCRIGHTS struct cmsghdr *cmsg; for (cmsg = CMSG_FIRSTHDR( &msghdr ); cmsg; cmsg = CMSG_NXTHDR( &msghdr, cmsg )) { if (cmsg->cmsg_level != SOL_SOCKET) continue; if (cmsg->cmsg_type == SCM_RIGHTS) fd = *(int *)CMSG_DATA(cmsg); #ifdef SCM_CREDENTIALS else if (cmsg->cmsg_type == SCM_CREDENTIALS) { struct ucred *ucred = (struct ucred *)CMSG_DATA(cmsg); server_pid = ucred->pid; } #endif } #endif /* HAVE_STRUCT_MSGHDR_MSG_ACCRIGHTS */ if (fd != -1) fcntl( fd, F_SETFD, FD_CLOEXEC ); /* in case MSG_CMSG_CLOEXEC is not supported */ return fd; } if (!ret) break; if (errno == EINTR) continue; if (errno == EPIPE) break; server_protocol_perror("recvmsg"); } /* the server closed the connection; time to die... */ abort_thread(0); } /***********************************************************************/ /* fd cache support */ struct fd_cache_entry { int fd; enum server_fd_type type : 6; unsigned int access : 2; unsigned int options : 24; }; #define FD_CACHE_BLOCK_SIZE (65536 / sizeof(struct fd_cache_entry)) #define FD_CACHE_ENTRIES 128 static struct fd_cache_entry *fd_cache[FD_CACHE_ENTRIES]; static struct fd_cache_entry fd_cache_initial_block[FD_CACHE_BLOCK_SIZE]; static inline unsigned int handle_to_index( HANDLE handle, unsigned int *entry ) { unsigned int idx = (wine_server_obj_handle(handle) >> 2) - 1; *entry = idx / FD_CACHE_BLOCK_SIZE; return idx % FD_CACHE_BLOCK_SIZE; } /*********************************************************************** * add_fd_to_cache * * Caller must hold fd_cache_section. */ static int add_fd_to_cache( HANDLE handle, int fd, enum server_fd_type type, unsigned int access, unsigned int options ) { unsigned int entry, idx = handle_to_index( handle, &entry ); int prev_fd; if (entry >= FD_CACHE_ENTRIES) { FIXME( "too many allocated handles, not caching %p\n", handle ); return 0; } if (!fd_cache[entry]) /* do we need to allocate a new block of entries? */ { if (!entry) fd_cache[0] = fd_cache_initial_block; else { void *ptr = wine_anon_mmap( NULL, FD_CACHE_BLOCK_SIZE * sizeof(struct fd_cache_entry), PROT_READ | PROT_WRITE, 0 ); if (ptr == MAP_FAILED) return 0; fd_cache[entry] = ptr; } } /* store fd+1 so that 0 can be used as the unset value */ prev_fd = interlocked_xchg( &fd_cache[entry][idx].fd, fd + 1 ) - 1; fd_cache[entry][idx].type = type; fd_cache[entry][idx].access = access; fd_cache[entry][idx].options = options; if (prev_fd != -1) close( prev_fd ); return 1; } /*********************************************************************** * get_cached_fd * * Caller must hold fd_cache_section. */ static inline int get_cached_fd( HANDLE handle, enum server_fd_type *type, unsigned int *access, unsigned int *options ) { unsigned int entry, idx = handle_to_index( handle, &entry ); int fd = -1; if (entry < FD_CACHE_ENTRIES && fd_cache[entry]) { fd = fd_cache[entry][idx].fd - 1; if (type) *type = fd_cache[entry][idx].type; if (access) *access = fd_cache[entry][idx].access; if (options) *options = fd_cache[entry][idx].options; } return fd; } /*********************************************************************** * server_remove_fd_from_cache */ int server_remove_fd_from_cache( HANDLE handle ) { unsigned int entry, idx = handle_to_index( handle, &entry ); int fd = -1; if (entry < FD_CACHE_ENTRIES && fd_cache[entry]) fd = interlocked_xchg( &fd_cache[entry][idx].fd, 0 ) - 1; return fd; } /*********************************************************************** * server_get_unix_fd * * The returned unix_fd should be closed iff needs_close is non-zero. */ int server_get_unix_fd( HANDLE handle, unsigned int wanted_access, int *unix_fd, int *needs_close, enum server_fd_type *type, unsigned int *options ) { sigset_t sigset; obj_handle_t fd_handle; int ret = 0, fd; unsigned int access = 0; *unix_fd = -1; *needs_close = 0; wanted_access &= FILE_READ_DATA | FILE_WRITE_DATA; server_enter_uninterrupted_section( &fd_cache_section, &sigset ); fd = get_cached_fd( handle, type, &access, options ); if (fd != -1) goto done; SERVER_START_REQ( get_handle_fd ) { req->handle = wine_server_obj_handle( handle ); if (!(ret = wine_server_call( req ))) { if (type) *type = reply->type; if (options) *options = reply->options; access = reply->access; if ((fd = receive_fd( &fd_handle )) != -1) { assert( wine_server_ptr_handle(fd_handle) == handle ); *needs_close = (!reply->cacheable || !add_fd_to_cache( handle, fd, reply->type, reply->access, reply->options )); } else ret = STATUS_TOO_MANY_OPENED_FILES; } } SERVER_END_REQ; done: server_leave_uninterrupted_section( &fd_cache_section, &sigset ); if (!ret && ((access & wanted_access) != wanted_access)) { ret = STATUS_ACCESS_DENIED; if (*needs_close) close( fd ); } if (!ret) *unix_fd = fd; return ret; } /*********************************************************************** * wine_server_fd_to_handle (NTDLL.@) * * Allocate a file handle for a Unix file descriptor. * * PARAMS * fd [I] Unix file descriptor. * access [I] Win32 access flags. * attributes [I] Object attributes. * handle [O] Address where Wine file handle will be stored. * * RETURNS * NTSTATUS code */ int CDECL wine_server_fd_to_handle( int fd, unsigned int access, unsigned int attributes, HANDLE *handle ) { int ret; *handle = 0; wine_server_send_fd( fd ); SERVER_START_REQ( alloc_file_handle ) { req->access = access; req->attributes = attributes; req->fd = fd; if (!(ret = wine_server_call( req ))) *handle = wine_server_ptr_handle( reply->handle ); } SERVER_END_REQ; return ret; } /*********************************************************************** * wine_server_handle_to_fd (NTDLL.@) * * Retrieve the file descriptor corresponding to a file handle. * * PARAMS * handle [I] Wine file handle. * access [I] Win32 file access rights requested. * unix_fd [O] Address where Unix file descriptor will be stored. * options [O] Address where the file open options will be stored. Optional. * * RETURNS * NTSTATUS code */ int CDECL wine_server_handle_to_fd( HANDLE handle, unsigned int access, int *unix_fd, unsigned int *options ) { int needs_close, ret = server_get_unix_fd( handle, access, unix_fd, &needs_close, NULL, options ); if (!ret && !needs_close) { if ((*unix_fd = dup(*unix_fd)) == -1) ret = FILE_GetNtStatus(); } return ret; } /*********************************************************************** * wine_server_release_fd (NTDLL.@) * * Release the Unix file descriptor returned by wine_server_handle_to_fd. * * PARAMS * handle [I] Wine file handle. * unix_fd [I] Unix file descriptor to release. * * RETURNS * nothing */ void CDECL wine_server_release_fd( HANDLE handle, int unix_fd ) { close( unix_fd ); } /*********************************************************************** * server_pipe * * Create a pipe for communicating with the server. */ int server_pipe( int fd[2] ) { int ret; #ifdef HAVE_PIPE2 static int have_pipe2 = 1; if (have_pipe2) { if (!(ret = pipe2( fd, O_CLOEXEC ))) return ret; if (errno == ENOSYS || errno == EINVAL) have_pipe2 = 0; /* don't try again */ } #endif if (!(ret = pipe( fd ))) { fcntl( fd[0], F_SETFD, FD_CLOEXEC ); fcntl( fd[1], F_SETFD, FD_CLOEXEC ); } return ret; } /*********************************************************************** * start_server * * Start a new wine server. */ static void start_server(void) { static int started; /* we only try once */ char *argv[3]; static char wineserver[] = "server/wineserver"; static char debug[] = "-d"; if (!started) { int status; int pid = fork(); if (pid == -1) fatal_perror( "fork" ); if (!pid) { argv[0] = wineserver; argv[1] = TRACE_ON(server) ? debug : NULL; argv[2] = NULL; wine_exec_wine_binary( argv[0], argv, getenv("WINESERVER") ); fatal_error( "could not exec wineserver\n" ); } waitpid( pid, &status, 0 ); status = WIFEXITED(status) ? WEXITSTATUS(status) : 1; if (status == 2) return; /* server lock held by someone else, will retry later */ if (status) exit(status); /* server failed */ started = 1; } } /*********************************************************************** * setup_config_dir * * Setup the wine configuration dir. */ static void setup_config_dir(void) { const char *p, *config_dir = wine_get_config_dir(); if (chdir( config_dir ) == -1) { if (errno != ENOENT) fatal_perror( "chdir to %s\n", config_dir ); if ((p = strrchr( config_dir, '/' )) && p != config_dir) { struct stat st; char *tmp_dir; if (!(tmp_dir = malloc( p + 1 - config_dir ))) fatal_error( "out of memory\n" ); memcpy( tmp_dir, config_dir, p - config_dir ); tmp_dir[p - config_dir] = 0; if (!stat( tmp_dir, &st ) && st.st_uid != getuid()) fatal_error( "'%s' is not owned by you, refusing to create a configuration directory there\n", tmp_dir ); free( tmp_dir ); } mkdir( config_dir, 0777 ); if (chdir( config_dir ) == -1) fatal_perror( "chdir to %s\n", config_dir ); if ((p = getenv( "WINEARCH" )) && !strcmp( p, "win32" )) { /* force creation of a 32-bit prefix */ int fd = open( "system.reg", O_WRONLY | O_CREAT | O_EXCL, 0666 ); if (fd != -1) { static const char regfile[] = "WINE REGISTRY Version 2\n\n#arch=win32\n"; write( fd, regfile, sizeof(regfile) - 1 ); close( fd ); } } MESSAGE( "wine: created the configuration directory '%s'\n", config_dir ); } if (mkdir( "dosdevices", 0777 ) == -1) { if (errno == EEXIST) return; fatal_perror( "cannot create %s/dosdevices\n", config_dir ); } /* create the drive symlinks */ mkdir( "drive_c", 0777 ); symlink( "../drive_c", "dosdevices/c:" ); symlink( "/", "dosdevices/z:" ); } /*********************************************************************** * server_connect_error * * Try to display a meaningful explanation of why we couldn't connect * to the server. */ static void server_connect_error( const char *serverdir ) { int fd; struct flock fl; if ((fd = open( LOCKNAME, O_WRONLY )) == -1) fatal_error( "for some mysterious reason, the wine server never started.\n" ); fl.l_type = F_WRLCK; fl.l_whence = SEEK_SET; fl.l_start = 0; fl.l_len = 1; if (fcntl( fd, F_GETLK, &fl ) != -1) { if (fl.l_type == F_WRLCK) /* the file is locked */ fatal_error( "a wine server seems to be running, but I cannot connect to it.\n" " You probably need to kill that process (it might be pid %d).\n", (int)fl.l_pid ); fatal_error( "for some mysterious reason, the wine server failed to run.\n" ); } fatal_error( "the file system of '%s' doesn't support locks,\n" " and there is a 'socket' file in that directory that prevents wine from starting.\n" " You should make sure no wine server is running, remove that file and try again.\n", serverdir ); } /*********************************************************************** * server_connect * * Attempt to connect to an existing server socket. * We need to be in the server directory already. */ static int server_connect(void) { const char *serverdir; struct sockaddr_un addr; struct stat st; int s, slen, retry, fd_cwd; /* retrieve the current directory */ fd_cwd = open( ".", O_RDONLY ); if (fd_cwd != -1) fcntl( fd_cwd, F_SETFD, 1 ); /* set close on exec flag */ setup_config_dir(); serverdir = wine_get_server_dir(); /* chdir to the server directory */ if (chdir( serverdir ) == -1) { if (errno != ENOENT) fatal_perror( "chdir to %s", serverdir ); start_server(); if (chdir( serverdir ) == -1) fatal_perror( "chdir to %s", serverdir ); } /* make sure we are at the right place */ if (stat( ".", &st ) == -1) fatal_perror( "stat %s", serverdir ); if (st.st_uid != getuid()) fatal_error( "'%s' is not owned by you\n", serverdir ); if (st.st_mode & 077) fatal_error( "'%s' must not be accessible by other users\n", serverdir ); for (retry = 0; retry < 6; retry++) { /* if not the first try, wait a bit to leave the previous server time to exit */ if (retry) { usleep( 100000 * retry * retry ); start_server(); if (lstat( SOCKETNAME, &st ) == -1) continue; /* still no socket, wait a bit more */ } else if (lstat( SOCKETNAME, &st ) == -1) /* check for an already existing socket */ { if (errno != ENOENT) fatal_perror( "lstat %s/%s", serverdir, SOCKETNAME ); start_server(); if (lstat( SOCKETNAME, &st ) == -1) continue; /* still no socket, wait a bit more */ } /* make sure the socket is sane (ISFIFO needed for Solaris) */ if (!S_ISSOCK(st.st_mode) && !S_ISFIFO(st.st_mode)) fatal_error( "'%s/%s' is not a socket\n", serverdir, SOCKETNAME ); if (st.st_uid != getuid()) fatal_error( "'%s/%s' is not owned by you\n", serverdir, SOCKETNAME ); /* try to connect to it */ addr.sun_family = AF_UNIX; strcpy( addr.sun_path, SOCKETNAME ); slen = sizeof(addr) - sizeof(addr.sun_path) + strlen(addr.sun_path) + 1; #ifdef HAVE_STRUCT_SOCKADDR_UN_SUN_LEN addr.sun_len = slen; #endif if ((s = socket( AF_UNIX, SOCK_STREAM, 0 )) == -1) fatal_perror( "socket" ); #ifdef SO_PASSCRED else { int enable = 1; setsockopt( s, SOL_SOCKET, SO_PASSCRED, &enable, sizeof(enable) ); } #endif if (connect( s, (struct sockaddr *)&addr, slen ) != -1) { /* switch back to the starting directory */ if (fd_cwd != -1) { fchdir( fd_cwd ); close( fd_cwd ); } fcntl( s, F_SETFD, 1 ); /* set close on exec flag */ return s; } close( s ); } server_connect_error( serverdir ); } #ifdef __APPLE__ #include <mach/mach.h> #include <mach/mach_error.h> #include <servers/bootstrap.h> /* send our task port to the server */ static void send_server_task_port(void) { mach_port_t bootstrap_port, wineserver_port; kern_return_t kret; struct { mach_msg_header_t header; mach_msg_body_t body; mach_msg_port_descriptor_t task_port; } msg; if (task_get_bootstrap_port(mach_task_self(), &bootstrap_port) != KERN_SUCCESS) return; kret = bootstrap_look_up(bootstrap_port, (char*)wine_get_server_dir(), &wineserver_port); if (kret != KERN_SUCCESS) fatal_error( "cannot find the server port: 0x%08x\n", kret ); mach_port_deallocate(mach_task_self(), bootstrap_port); msg.header.msgh_bits = MACH_MSGH_BITS(MACH_MSG_TYPE_COPY_SEND, 0) | MACH_MSGH_BITS_COMPLEX; msg.header.msgh_size = sizeof(msg); msg.header.msgh_remote_port = wineserver_port; msg.header.msgh_local_port = MACH_PORT_NULL; msg.body.msgh_descriptor_count = 1; msg.task_port.name = mach_task_self(); msg.task_port.disposition = MACH_MSG_TYPE_COPY_SEND; msg.task_port.type = MACH_MSG_PORT_DESCRIPTOR; kret = mach_msg_send(&msg.header); if (kret != KERN_SUCCESS) server_protocol_error( "mach_msg_send failed: 0x%08x\n", kret ); mach_port_deallocate(mach_task_self(), wineserver_port); } #endif /* __APPLE__ */ /*********************************************************************** * get_unix_tid * * Retrieve the Unix tid to use on the server side for the current thread. */ static int get_unix_tid(void) { int ret = -1; #ifdef HAVE_PTHREAD_GETTHREADID_NP ret = pthread_getthreadid_np(); #elif defined(linux) ret = syscall( __NR_gettid ); #elif defined(__sun) ret = pthread_self(); #elif defined(__APPLE__) ret = mach_thread_self(); mach_port_deallocate(mach_task_self(), ret); #elif defined(__NetBSD__) ret = _lwp_self(); #elif defined(__FreeBSD__) long lwpid; thr_self( &lwpid ); ret = lwpid; #elif defined(__DragonFly__) ret = lwp_gettid(); #endif return ret; } /*********************************************************************** * server_init_process * * Start the server and create the initial socket pair. */ void server_init_process(void) { obj_handle_t version; const char *env_socket = getenv( "WINESERVERSOCKET" ); server_pid = -1; if (env_socket) { fd_socket = atoi( env_socket ); if (fcntl( fd_socket, F_SETFD, 1 ) == -1) fatal_perror( "Bad server socket %d", fd_socket ); unsetenv( "WINESERVERSOCKET" ); } else fd_socket = server_connect(); /* setup the signal mask */ sigemptyset( &server_block_set ); sigaddset( &server_block_set, SIGALRM ); sigaddset( &server_block_set, SIGIO ); sigaddset( &server_block_set, SIGINT ); sigaddset( &server_block_set, SIGHUP ); sigaddset( &server_block_set, SIGUSR1 ); sigaddset( &server_block_set, SIGUSR2 ); sigaddset( &server_block_set, SIGCHLD ); pthread_sigmask( SIG_BLOCK, &server_block_set, NULL ); /* receive the first thread request fd on the main socket */ ntdll_get_thread_data()->request_fd = receive_fd( &version ); #ifdef SO_PASSCRED /* now that we hopefully received the server_pid, disable SO_PASSCRED */ { int enable = 0; setsockopt( fd_socket, SOL_SOCKET, SO_PASSCRED, &enable, sizeof(enable) ); } #endif if (version != SERVER_PROTOCOL_VERSION) server_protocol_error( "version mismatch %d/%d.\n" "Your %s binary was not upgraded correctly,\n" "or you have an older one somewhere in your PATH.\n" "Or maybe the wrong wineserver is still running?\n", version, SERVER_PROTOCOL_VERSION, (version > SERVER_PROTOCOL_VERSION) ? "wine" : "wineserver" ); #ifdef __APPLE__ send_server_task_port(); #endif #if defined(__linux__) && defined(HAVE_PRCTL) /* work around Ubuntu's ptrace breakage */ if (server_pid != -1) prctl( 0x59616d61 /* PR_SET_PTRACER */, server_pid ); #endif } /*********************************************************************** * server_init_process_done */ NTSTATUS server_init_process_done(void) { PEB *peb = NtCurrentTeb()->Peb; IMAGE_NT_HEADERS *nt = RtlImageNtHeader( peb->ImageBaseAddress ); NTSTATUS status; /* Install signal handlers; this cannot be done earlier, since we cannot * send exceptions to the debugger before the create process event that * is sent by REQ_INIT_PROCESS_DONE. * We do need the handlers in place by the time the request is over, so * we set them up here. If we segfault between here and the server call * something is very wrong... */ signal_init_process(); /* Signal the parent process to continue */ SERVER_START_REQ( init_process_done ) { req->module = wine_server_client_ptr( peb->ImageBaseAddress ); #ifdef __i386__ req->ldt_copy = wine_server_client_ptr( &wine_ldt_copy ); #endif req->entry = wine_server_client_ptr( (char *)peb->ImageBaseAddress + nt->OptionalHeader.AddressOfEntryPoint ); req->gui = (nt->OptionalHeader.Subsystem != IMAGE_SUBSYSTEM_WINDOWS_CUI); status = wine_server_call( req ); } SERVER_END_REQ; return status; } /*********************************************************************** * server_init_thread * * Send an init thread request. Return 0 if OK. */ size_t server_init_thread( void *entry_point ) { static const int is_win64 = (sizeof(void *) > sizeof(int)); const char *arch = getenv( "WINEARCH" ); int ret; int reply_pipe[2]; struct sigaction sig_act; size_t info_size; sig_act.sa_handler = SIG_IGN; sig_act.sa_flags = 0; sigemptyset( &sig_act.sa_mask ); /* ignore SIGPIPE so that we get an EPIPE error instead */ sigaction( SIGPIPE, &sig_act, NULL ); /* create the server->client communication pipes */ if (server_pipe( reply_pipe ) == -1) server_protocol_perror( "pipe" ); if (server_pipe( ntdll_get_thread_data()->wait_fd ) == -1) server_protocol_perror( "pipe" ); wine_server_send_fd( reply_pipe[1] ); wine_server_send_fd( ntdll_get_thread_data()->wait_fd[1] ); ntdll_get_thread_data()->reply_fd = reply_pipe[0]; close( reply_pipe[1] ); SERVER_START_REQ( init_thread ) { req->unix_pid = getpid(); req->unix_tid = get_unix_tid(); req->teb = wine_server_client_ptr( NtCurrentTeb() ); req->entry = wine_server_client_ptr( entry_point ); req->reply_fd = reply_pipe[1]; req->wait_fd = ntdll_get_thread_data()->wait_fd[1]; req->debug_level = (TRACE_ON(server) != 0); req->cpu = client_cpu; ret = wine_server_call( req ); NtCurrentTeb()->ClientId.UniqueProcess = ULongToHandle(reply->pid); NtCurrentTeb()->ClientId.UniqueThread = ULongToHandle(reply->tid); info_size = reply->info_size; server_start_time = reply->server_start; server_cpus = reply->all_cpus; } SERVER_END_REQ; is_wow64 = !is_win64 && (server_cpus & (1 << CPU_x86_64)) != 0; ntdll_get_thread_data()->wow64_redir = is_wow64; switch (ret) { case STATUS_SUCCESS: if (arch) { if (!strcmp( arch, "win32" ) && (is_win64 || is_wow64)) fatal_error( "WINEARCH set to win32 but '%s' is a 64-bit installation.\n", wine_get_config_dir() ); if (!strcmp( arch, "win64" ) && !is_win64 && !is_wow64) fatal_error( "WINEARCH set to win64 but '%s' is a 32-bit installation.\n", wine_get_config_dir() ); } return info_size; case STATUS_NOT_REGISTRY_FILE: fatal_error( "'%s' is a 32-bit installation, it cannot support 64-bit applications.\n", wine_get_config_dir() ); case STATUS_NOT_SUPPORTED: if (is_win64) fatal_error( "wineserver is 32-bit, it cannot support 64-bit applications.\n" ); else fatal_error( "'%s' is a 64-bit installation, it cannot be used with a 32-bit wineserver.\n", wine_get_config_dir() ); default: server_protocol_error( "init_thread failed with status %x\n", ret ); } }