| /* |
| * 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> |
| #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_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(__ALPHA__) |
| static const enum cpu_type client_cpu = CPU_ALPHA; |
| #elif defined(__powerpc__) |
| static const enum cpu_type client_cpu = CPU_POWERPC; |
| #elif defined(__sparc__) |
| static const enum cpu_type client_cpu = CPU_SPARC; |
| #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->removable || |
| !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" ); |
| 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; |
| #if defined(linux) && defined(__i386__) |
| __asm__("int $0x80" : "=a" (ret) : "0" (224) /* SYS_gettid */); |
| #elif defined(linux) && defined(__x86_64__) |
| __asm__("syscall" : "=a" (ret) : "0" (186) /* SYS_gettid */); |
| #elif defined(__sun) |
| ret = pthread_self(); |
| #elif defined(__APPLE__) |
| ret = mach_thread_self(); |
| mach_port_deallocate(mach_task_self(), ret); |
| #elif defined(__FreeBSD__) |
| long lwpid; |
| thr_self( &lwpid ); |
| ret = lwpid; |
| #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 */ |
| #ifdef SO_PASSCRED |
| if (server_pid == -1) |
| { |
| int enable = 1; |
| setsockopt( fd_socket, SOL_SOCKET, SO_PASSCRED, &enable, sizeof(enable) ); |
| ntdll_get_thread_data()->request_fd = receive_fd( &version ); |
| enable = 0; |
| setsockopt( fd_socket, SOL_SOCKET, SO_PASSCRED, &enable, sizeof(enable) ); |
| } |
| else |
| #endif |
| ntdll_get_thread_data()->request_fd = receive_fd( &version ); |
| |
| 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 ); |
| /* automatic child reaping to avoid zombies */ |
| #ifdef SA_NOCLDWAIT |
| sig_act.sa_flags |= SA_NOCLDWAIT; |
| #endif |
| sigaction( SIGCHLD, &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 ); |
| } |
| } |