mirror of
git://source.winehq.org/git/wine.git
synced 2024-09-02 17:03:37 +00:00
1144 lines
34 KiB
C
1144 lines
34 KiB
C
/*
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* Wine server communication
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*
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* Copyright (C) 1998 Alexandre Julliard
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
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*/
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#include "config.h"
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#include "wine/port.h"
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#include <assert.h>
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#include <ctype.h>
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#include <dirent.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <signal.h>
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#include <stdarg.h>
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#include <stdio.h>
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#include <string.h>
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#include <sys/types.h>
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#ifdef HAVE_SYS_SOCKET_H
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# include <sys/socket.h>
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#endif
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#ifdef HAVE_SYS_WAIT_H
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#include <sys/wait.h>
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#endif
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#ifdef HAVE_SYS_UN_H
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#include <sys/un.h>
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#endif
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#ifdef HAVE_SYS_MMAN_H
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#include <sys/mman.h>
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#endif
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#ifdef HAVE_SYS_STAT_H
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# include <sys/stat.h>
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#endif
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#ifdef HAVE_SYS_UIO_H
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#include <sys/uio.h>
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#endif
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#ifdef HAVE_UNISTD_H
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# include <unistd.h>
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#endif
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#include "ntstatus.h"
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#define WIN32_NO_STATUS
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#include "wine/library.h"
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#include "wine/pthread.h"
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#include "wine/server.h"
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#include "wine/debug.h"
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#include "ntdll_misc.h"
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WINE_DEFAULT_DEBUG_CHANNEL(server);
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/* Some versions of glibc don't define this */
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#ifndef SCM_RIGHTS
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#define SCM_RIGHTS 1
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#endif
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#define SOCKETNAME "socket" /* name of the socket file */
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#define LOCKNAME "lock" /* name of the lock file */
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#ifndef HAVE_STRUCT_MSGHDR_MSG_ACCRIGHTS
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/* data structure used to pass an fd with sendmsg/recvmsg */
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struct cmsg_fd
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{
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struct
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{
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size_t len; /* size of structure */
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int level; /* SOL_SOCKET */
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int type; /* SCM_RIGHTS */
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} header;
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int fd; /* fd to pass */
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};
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#endif /* HAVE_STRUCT_MSGHDR_MSG_ACCRIGHTS */
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timeout_t server_start_time = 0; /* time of server startup */
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extern struct wine_pthread_functions pthread_functions;
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sigset_t server_block_set; /* signals to block during server calls */
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static int fd_socket = -1; /* socket to exchange file descriptors with the server */
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static RTL_CRITICAL_SECTION fd_cache_section;
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static RTL_CRITICAL_SECTION_DEBUG critsect_debug =
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{
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0, 0, &fd_cache_section,
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{ &critsect_debug.ProcessLocksList, &critsect_debug.ProcessLocksList },
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0, 0, { (DWORD_PTR)(__FILE__ ": fd_cache_section") }
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};
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static RTL_CRITICAL_SECTION fd_cache_section = { &critsect_debug, -1, 0, 0, 0, 0 };
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#ifdef __GNUC__
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static void fatal_error( const char *err, ... ) __attribute__((noreturn, format(printf,1,2)));
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static void fatal_perror( const char *err, ... ) __attribute__((noreturn, format(printf,1,2)));
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static void server_connect_error( const char *serverdir ) __attribute__((noreturn));
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#endif
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/* die on a fatal error; use only during initialization */
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static void fatal_error( const char *err, ... )
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{
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va_list args;
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va_start( args, err );
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fprintf( stderr, "wine: " );
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vfprintf( stderr, err, args );
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va_end( args );
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exit(1);
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}
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/* die on a fatal error; use only during initialization */
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static void fatal_perror( const char *err, ... )
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{
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va_list args;
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va_start( args, err );
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fprintf( stderr, "wine: " );
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vfprintf( stderr, err, args );
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perror( " " );
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va_end( args );
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exit(1);
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}
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/***********************************************************************
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* server_exit_thread
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*/
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void server_exit_thread( int status )
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{
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struct wine_pthread_thread_info info;
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SIZE_T size;
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int fds[4];
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RtlAcquirePebLock();
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RemoveEntryList( &NtCurrentTeb()->TlsLinks );
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RtlReleasePebLock();
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info.stack_base = NtCurrentTeb()->DeallocationStack;
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info.teb_base = NtCurrentTeb();
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info.teb_sel = wine_get_fs();
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info.exit_status = status;
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fds[0] = ntdll_get_thread_data()->wait_fd[0];
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fds[1] = ntdll_get_thread_data()->wait_fd[1];
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fds[2] = ntdll_get_thread_data()->reply_fd;
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fds[3] = ntdll_get_thread_data()->request_fd;
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pthread_functions.sigprocmask( SIG_BLOCK, &server_block_set, NULL );
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size = 0;
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NtFreeVirtualMemory( GetCurrentProcess(), &info.stack_base, &size, MEM_RELEASE | MEM_SYSTEM );
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info.stack_size = size;
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size = 0;
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NtFreeVirtualMemory( GetCurrentProcess(), &info.teb_base, &size, MEM_RELEASE | MEM_SYSTEM );
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info.teb_size = size;
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close( fds[0] );
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close( fds[1] );
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close( fds[2] );
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close( fds[3] );
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pthread_functions.exit_thread( &info );
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}
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/***********************************************************************
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* server_abort_thread
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*/
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void server_abort_thread( int status )
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{
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pthread_functions.sigprocmask( SIG_BLOCK, &server_block_set, NULL );
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close( ntdll_get_thread_data()->wait_fd[0] );
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close( ntdll_get_thread_data()->wait_fd[1] );
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close( ntdll_get_thread_data()->reply_fd );
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close( ntdll_get_thread_data()->request_fd );
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pthread_functions.abort_thread( status );
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}
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/***********************************************************************
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* server_protocol_error
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*/
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void server_protocol_error( const char *err, ... )
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{
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va_list args;
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va_start( args, err );
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fprintf( stderr, "wine client error:%x: ", GetCurrentThreadId() );
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vfprintf( stderr, err, args );
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va_end( args );
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server_abort_thread(1);
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}
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/***********************************************************************
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* server_protocol_perror
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*/
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void server_protocol_perror( const char *err )
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{
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fprintf( stderr, "wine client error:%x: ", GetCurrentThreadId() );
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perror( err );
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server_abort_thread(1);
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}
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/***********************************************************************
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* send_request
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*
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* Send a request to the server.
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*/
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static void send_request( const struct __server_request_info *req )
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{
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unsigned int i;
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int ret;
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if (!req->u.req.request_header.request_size)
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{
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if ((ret = write( ntdll_get_thread_data()->request_fd, &req->u.req,
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sizeof(req->u.req) )) == sizeof(req->u.req)) return;
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}
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else
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{
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struct iovec vec[__SERVER_MAX_DATA+1];
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vec[0].iov_base = (void *)&req->u.req;
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vec[0].iov_len = sizeof(req->u.req);
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for (i = 0; i < req->data_count; i++)
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{
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vec[i+1].iov_base = (void *)req->data[i].ptr;
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vec[i+1].iov_len = req->data[i].size;
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}
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if ((ret = writev( ntdll_get_thread_data()->request_fd, vec, i+1 )) ==
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req->u.req.request_header.request_size + sizeof(req->u.req)) return;
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}
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if (ret >= 0) server_protocol_error( "partial write %d\n", ret );
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if (errno == EPIPE) server_abort_thread(0);
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server_protocol_perror( "write" );
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}
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/***********************************************************************
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* read_reply_data
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*
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* Read data from the reply buffer; helper for wait_reply.
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*/
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static void read_reply_data( void *buffer, size_t size )
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{
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int ret;
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for (;;)
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{
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if ((ret = read( ntdll_get_thread_data()->reply_fd, buffer, size )) > 0)
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{
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if (!(size -= ret)) return;
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buffer = (char *)buffer + ret;
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continue;
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}
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if (!ret) break;
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if (errno == EINTR) continue;
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if (errno == EPIPE) break;
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server_protocol_perror("read");
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}
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/* the server closed the connection; time to die... */
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server_abort_thread(0);
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}
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/***********************************************************************
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* wait_reply
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*
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* Wait for a reply from the server.
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*/
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static inline void wait_reply( struct __server_request_info *req )
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{
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read_reply_data( &req->u.reply, sizeof(req->u.reply) );
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if (req->u.reply.reply_header.reply_size)
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read_reply_data( req->reply_data, req->u.reply.reply_header.reply_size );
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}
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/***********************************************************************
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* wine_server_call (NTDLL.@)
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*
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* Perform a server call.
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*
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* PARAMS
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* req_ptr [I/O] Function dependent data
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*
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* RETURNS
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* Depends on server function being called, but usually an NTSTATUS code.
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*
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* NOTES
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* Use the SERVER_START_REQ and SERVER_END_REQ to help you fill out the
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* server request structure for the particular call. E.g:
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*| SERVER_START_REQ( event_op )
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*| {
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*| req->handle = handle;
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*| req->op = SET_EVENT;
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*| ret = wine_server_call( req );
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*| }
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*| SERVER_END_REQ;
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*/
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unsigned int wine_server_call( void *req_ptr )
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{
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struct __server_request_info * const req = req_ptr;
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sigset_t old_set;
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pthread_functions.sigprocmask( SIG_BLOCK, &server_block_set, &old_set );
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send_request( req );
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wait_reply( req );
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pthread_functions.sigprocmask( SIG_SETMASK, &old_set, NULL );
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return req->u.reply.reply_header.error;
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}
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/***********************************************************************
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* server_enter_uninterrupted_section
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*/
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void server_enter_uninterrupted_section( RTL_CRITICAL_SECTION *cs, sigset_t *sigset )
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{
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pthread_functions.sigprocmask( SIG_BLOCK, &server_block_set, sigset );
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RtlEnterCriticalSection( cs );
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}
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/***********************************************************************
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* server_leave_uninterrupted_section
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*/
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void server_leave_uninterrupted_section( RTL_CRITICAL_SECTION *cs, sigset_t *sigset )
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{
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RtlLeaveCriticalSection( cs );
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pthread_functions.sigprocmask( SIG_SETMASK, sigset, NULL );
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}
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/***********************************************************************
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* wine_server_send_fd (NTDLL.@)
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*
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* Send a file descriptor to the server.
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*
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* PARAMS
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* fd [I] file descriptor to send
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*
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* RETURNS
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* nothing
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*/
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void wine_server_send_fd( int fd )
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{
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#ifndef HAVE_STRUCT_MSGHDR_MSG_ACCRIGHTS
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struct cmsg_fd cmsg;
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#endif
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struct send_fd data;
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struct msghdr msghdr;
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struct iovec vec;
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int ret;
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vec.iov_base = (void *)&data;
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vec.iov_len = sizeof(data);
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msghdr.msg_name = NULL;
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msghdr.msg_namelen = 0;
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msghdr.msg_iov = &vec;
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msghdr.msg_iovlen = 1;
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#ifdef HAVE_STRUCT_MSGHDR_MSG_ACCRIGHTS
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msghdr.msg_accrights = (void *)&fd;
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msghdr.msg_accrightslen = sizeof(fd);
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#else /* HAVE_STRUCT_MSGHDR_MSG_ACCRIGHTS */
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cmsg.header.len = sizeof(cmsg.header) + sizeof(fd);
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cmsg.header.level = SOL_SOCKET;
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cmsg.header.type = SCM_RIGHTS;
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cmsg.fd = fd;
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msghdr.msg_control = &cmsg;
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msghdr.msg_controllen = sizeof(cmsg.header) + sizeof(fd);
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msghdr.msg_flags = 0;
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#endif /* HAVE_STRUCT_MSGHDR_MSG_ACCRIGHTS */
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data.tid = GetCurrentThreadId();
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data.fd = fd;
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for (;;)
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{
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if ((ret = sendmsg( fd_socket, &msghdr, 0 )) == sizeof(data)) return;
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if (ret >= 0) server_protocol_error( "partial write %d\n", ret );
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if (errno == EINTR) continue;
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if (errno == EPIPE) server_abort_thread(0);
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server_protocol_perror( "sendmsg" );
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}
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}
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/***********************************************************************
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* receive_fd
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*
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* Receive a file descriptor passed from the server.
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*/
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static int receive_fd( obj_handle_t *handle )
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{
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struct iovec vec;
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int ret, fd;
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#ifdef HAVE_STRUCT_MSGHDR_MSG_ACCRIGHTS
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struct msghdr msghdr;
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fd = -1;
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msghdr.msg_accrights = (void *)&fd;
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msghdr.msg_accrightslen = sizeof(fd);
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#else /* HAVE_STRUCT_MSGHDR_MSG_ACCRIGHTS */
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struct msghdr msghdr;
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struct cmsg_fd cmsg;
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cmsg.header.len = sizeof(cmsg.header) + sizeof(fd);
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cmsg.header.level = SOL_SOCKET;
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cmsg.header.type = SCM_RIGHTS;
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cmsg.fd = -1;
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msghdr.msg_control = &cmsg;
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msghdr.msg_controllen = sizeof(cmsg.header) + sizeof(fd);
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msghdr.msg_flags = 0;
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#endif /* HAVE_STRUCT_MSGHDR_MSG_ACCRIGHTS */
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msghdr.msg_name = NULL;
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msghdr.msg_namelen = 0;
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msghdr.msg_iov = &vec;
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msghdr.msg_iovlen = 1;
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vec.iov_base = (void *)handle;
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vec.iov_len = sizeof(*handle);
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for (;;)
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{
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if ((ret = recvmsg( fd_socket, &msghdr, 0 )) > 0)
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{
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#ifndef HAVE_STRUCT_MSGHDR_MSG_ACCRIGHTS
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fd = cmsg.fd;
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#endif
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if (fd != -1) fcntl( fd, F_SETFD, 1 ); /* set close on exec flag */
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return fd;
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}
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if (!ret) break;
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if (errno == EINTR) continue;
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if (errno == EPIPE) break;
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server_protocol_perror("recvmsg");
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}
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/* the server closed the connection; time to die... */
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server_abort_thread(0);
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}
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|
|
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/***********************************************************************/
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/* fd cache support */
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struct fd_cache_entry
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{
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int fd;
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enum server_fd_type type : 6;
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unsigned int access : 2;
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unsigned int options : 24;
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};
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|
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#define FD_CACHE_BLOCK_SIZE (65536 / sizeof(struct fd_cache_entry))
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#define FD_CACHE_ENTRIES 128
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static struct fd_cache_entry *fd_cache[FD_CACHE_ENTRIES];
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static struct fd_cache_entry fd_cache_initial_block[FD_CACHE_BLOCK_SIZE];
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|
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static inline unsigned int handle_to_index( obj_handle_t handle, unsigned int *entry )
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{
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unsigned long idx = ((unsigned long)handle >> 2) - 1;
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*entry = idx / FD_CACHE_BLOCK_SIZE;
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return idx % FD_CACHE_BLOCK_SIZE;
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}
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|
|
|
|
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/***********************************************************************
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|
* add_fd_to_cache
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*
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* Caller must hold fd_cache_section.
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*/
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static int add_fd_to_cache( obj_handle_t handle, int fd, enum server_fd_type type,
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unsigned int access, unsigned int options )
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{
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unsigned int entry, idx = handle_to_index( handle, &entry );
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int prev_fd;
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|
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if (entry >= FD_CACHE_ENTRIES)
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{
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FIXME( "too many allocated handles, not caching %p\n", handle );
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return 0;
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}
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|
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if (!fd_cache[entry]) /* do we need to allocate a new block of entries? */
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{
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if (!entry) fd_cache[0] = fd_cache_initial_block;
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else
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{
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void *ptr = wine_anon_mmap( NULL, FD_CACHE_BLOCK_SIZE * sizeof(struct fd_cache_entry),
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PROT_READ | PROT_WRITE, 0 );
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if (ptr == MAP_FAILED) return 0;
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fd_cache[entry] = ptr;
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}
|
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}
|
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/* store fd+1 so that 0 can be used as the unset value */
|
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prev_fd = interlocked_xchg( &fd_cache[entry][idx].fd, fd + 1 ) - 1;
|
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fd_cache[entry][idx].type = type;
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fd_cache[entry][idx].access = access;
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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( obj_handle_t 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( obj_handle_t 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( obj_handle_t 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 = 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( 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 wine_server_fd_to_handle( int fd, unsigned int access, unsigned int attributes, obj_handle_t *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 = 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 wine_server_handle_to_fd( obj_handle_t 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 wine_server_release_fd( obj_handle_t handle, int unix_fd )
|
|
{
|
|
close( unix_fd );
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* 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;
|
|
}
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* 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( 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 */
|
|
|
|
/* 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 );
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* rm_rf
|
|
*
|
|
* Remove a directory and all its contents; helper for create_config_dir.
|
|
*/
|
|
static void rm_rf( const char *path )
|
|
{
|
|
int err = errno; /* preserve errno */
|
|
DIR *dir;
|
|
char *buffer, *p;
|
|
struct stat st;
|
|
struct dirent *de;
|
|
|
|
if (!(buffer = malloc( strlen(path) + 256 + 1 ))) goto done;
|
|
strcpy( buffer, path );
|
|
p = buffer + strlen(buffer);
|
|
*p++ = '/';
|
|
|
|
if ((dir = opendir( path )))
|
|
{
|
|
while ((de = readdir( dir )))
|
|
{
|
|
if (!strcmp( de->d_name, "." ) || !strcmp( de->d_name, ".." )) continue;
|
|
strcpy( p, de->d_name );
|
|
if (unlink( buffer ) != -1) continue;
|
|
if (errno == EISDIR ||
|
|
(errno == EPERM && !lstat( buffer, &st ) && S_ISDIR(st.st_mode)))
|
|
{
|
|
/* recurse in the sub-directory */
|
|
rm_rf( buffer );
|
|
}
|
|
}
|
|
closedir( dir );
|
|
}
|
|
free( buffer );
|
|
rmdir( path );
|
|
done:
|
|
errno = err;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* create_config_dir
|
|
*
|
|
* Create the wine configuration dir (~/.wine).
|
|
*/
|
|
static void create_config_dir(void)
|
|
{
|
|
const char *config_dir = wine_get_config_dir();
|
|
char *tmp_dir;
|
|
int fd;
|
|
pid_t pid, wret;
|
|
|
|
if (!(tmp_dir = malloc( strlen(config_dir) + sizeof("-XXXXXX") )))
|
|
fatal_error( "out of memory\n" );
|
|
strcpy( tmp_dir, config_dir );
|
|
strcat( tmp_dir, "-XXXXXX" );
|
|
if ((fd = mkstemps( tmp_dir, 0 )) == -1)
|
|
fatal_perror( "can't get temp file name for %s", config_dir );
|
|
close( fd );
|
|
unlink( tmp_dir );
|
|
if (mkdir( tmp_dir, 0777 ) == -1)
|
|
fatal_perror( "cannot create temp dir %s", tmp_dir );
|
|
|
|
MESSAGE( "wine: creating configuration directory '%s'...\n", config_dir );
|
|
pid = fork();
|
|
if (pid == -1)
|
|
{
|
|
rmdir( tmp_dir );
|
|
fatal_perror( "fork" );
|
|
}
|
|
if (!pid)
|
|
{
|
|
char *argv[6];
|
|
static char argv0[] = "tools/wineprefixcreate",
|
|
argv1[] = "--quiet",
|
|
argv2[] = "--wait",
|
|
argv3[] = "--prefix";
|
|
|
|
argv[0] = argv0;
|
|
argv[1] = argv1;
|
|
argv[2] = argv2;
|
|
argv[3] = argv3;
|
|
argv[4] = tmp_dir;
|
|
argv[5] = NULL;
|
|
wine_exec_wine_binary( argv[0], argv, NULL );
|
|
rmdir( tmp_dir );
|
|
fatal_perror( "could not exec wineprefixcreate" );
|
|
}
|
|
else
|
|
{
|
|
int status;
|
|
|
|
while ((wret = waitpid( pid, &status, 0 )) != pid)
|
|
{
|
|
if (wret == -1 && errno != EINTR) fatal_perror( "wait4" );
|
|
}
|
|
if (!WIFEXITED(status) || WEXITSTATUS(status))
|
|
{
|
|
rm_rf( tmp_dir );
|
|
fatal_error( "wineprefixcreate failed while creating '%s'.\n", config_dir );
|
|
}
|
|
}
|
|
if (rename( tmp_dir, config_dir ) == -1)
|
|
{
|
|
rm_rf( tmp_dir );
|
|
if (errno != EEXIST && errno != ENOTEMPTY)
|
|
fatal_perror( "rename '%s' to '%s'", tmp_dir, config_dir );
|
|
/* else it was probably created by a concurrent wine process */
|
|
}
|
|
free( tmp_dir );
|
|
MESSAGE( "wine: '%s' created successfully.\n", config_dir );
|
|
}
|
|
|
|
|
|
#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__ */
|
|
|
|
/***********************************************************************
|
|
* server_init_process
|
|
*
|
|
* Start the server and create the initial socket pair.
|
|
*/
|
|
void server_init_process(void)
|
|
{
|
|
obj_handle_t dummy_handle;
|
|
const char *env_socket = getenv( "WINESERVERSOCKET" );
|
|
|
|
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
|
|
{
|
|
const char *server_dir = wine_get_server_dir();
|
|
|
|
if (!server_dir) /* this means the config dir doesn't exist */
|
|
{
|
|
create_config_dir();
|
|
server_dir = wine_get_server_dir();
|
|
}
|
|
|
|
/* connect to the server */
|
|
fd_socket = server_connect( server_dir );
|
|
}
|
|
|
|
/* 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_functions.sigprocmask( SIG_BLOCK, &server_block_set, NULL );
|
|
|
|
/* receive the first thread request fd on the main socket */
|
|
ntdll_get_thread_data()->request_fd = receive_fd( &dummy_handle );
|
|
|
|
#ifdef __APPLE__
|
|
send_server_task_port();
|
|
#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... */
|
|
if (!SIGNAL_Init()) exit(1);
|
|
|
|
/* Signal the parent process to continue */
|
|
SERVER_START_REQ( init_process_done )
|
|
{
|
|
req->module = peb->ImageBaseAddress;
|
|
req->entry = (char *)peb->ImageBaseAddress + nt->OptionalHeader.AddressOfEntryPoint;
|
|
req->gui = (nt->OptionalHeader.Subsystem != IMAGE_SUBSYSTEM_WINDOWS_CUI);
|
|
status = wine_server_call( req );
|
|
}
|
|
SERVER_END_REQ;
|
|
|
|
pthread_functions.sigprocmask( SIG_UNBLOCK, &server_block_set, NULL );
|
|
return status;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* server_init_thread
|
|
*
|
|
* Send an init thread request. Return 0 if OK.
|
|
*/
|
|
size_t server_init_thread( int unix_pid, int unix_tid, void *entry_point )
|
|
{
|
|
int version, 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 (pipe( reply_pipe ) == -1) server_protocol_perror( "pipe" );
|
|
if (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] );
|
|
|
|
/* set close on exec flag */
|
|
fcntl( ntdll_get_thread_data()->reply_fd, F_SETFD, 1 );
|
|
fcntl( ntdll_get_thread_data()->wait_fd[0], F_SETFD, 1 );
|
|
fcntl( ntdll_get_thread_data()->wait_fd[1], F_SETFD, 1 );
|
|
|
|
SERVER_START_REQ( init_thread )
|
|
{
|
|
req->unix_pid = unix_pid;
|
|
req->unix_tid = unix_tid;
|
|
req->teb = NtCurrentTeb();
|
|
req->peb = NtCurrentTeb()->Peb;
|
|
req->entry = entry_point;
|
|
req->ldt_copy = &wine_ldt_copy;
|
|
req->reply_fd = reply_pipe[1];
|
|
req->wait_fd = ntdll_get_thread_data()->wait_fd[1];
|
|
req->debug_level = (TRACE_ON(server) != 0);
|
|
ret = wine_server_call( req );
|
|
NtCurrentTeb()->ClientId.UniqueProcess = ULongToHandle(reply->pid);
|
|
NtCurrentTeb()->ClientId.UniqueThread = ULongToHandle(reply->tid);
|
|
info_size = reply->info_size;
|
|
version = reply->version;
|
|
server_start_time = reply->server_start;
|
|
}
|
|
SERVER_END_REQ;
|
|
|
|
if (ret) server_protocol_error( "init_thread failed with status %x\n", ret );
|
|
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" );
|
|
return info_size;
|
|
}
|