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Sweden-Number/dlls/ntdll/server.c

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/*
* 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
#ifdef HAVE_PWD_H
# include <pwd.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_UCONTEXT_H
# include <sys/ucontext.h>
#endif
#ifdef HAVE_SYS_THR_H
#include <sys/thr.h>
#endif
#ifdef HAVE_UNISTD_H
# include <unistd.h>
#endif
#ifdef __APPLE__
#include <crt_externs.h>
#include <spawn.h>
#ifndef _POSIX_SPAWN_DISABLE_ASLR
#define _POSIX_SPAWN_DISABLE_ASLR 0x0100
#endif
#endif
#include "ntstatus.h"
#define WIN32_NO_STATUS
#include "windef.h"
#include "winnt.h"
#include "wine/library.h"
#include "wine/server.h"
#include "wine/debug.h"
#include "ntdll_misc.h"
#include "ddk/wdm.h"
/* 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 */
const char *build_dir = NULL;
const char *data_dir = NULL;
const char *config_dir = NULL;
unsigned int server_cpus = 0;
BOOL is_wow64 = FALSE;
timeout_t server_start_time = 0; /* time of server startup */
sigset_t server_block_set; /* signals to block during server calls */
/***********************************************************************
* 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 CDECL wine_server_call( void *req_ptr )
{
return unix_funcs->server_call( req_ptr );
}
/***********************************************************************
* 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 )
{
unix_funcs->server_send_fd( fd );
}
/***********************************************************************
* 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 )
{
return unix_funcs->server_fd_to_handle( fd, access, attributes, handle );
}
/***********************************************************************
* 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 )
{
return unix_funcs->server_handle_to_fd( handle, access, unix_fd, options );
}
/***********************************************************************
* 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 )
{
unix_funcs->server_release_fd( handle, unix_fd );
}
/***********************************************************************
* server_init_process
*
* Start the server and create the initial socket pair.
*/
void server_init_process(void)
{
/* 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 );
}
/***********************************************************************
* server_init_process_done
*/
void server_init_process_done(void)
{
#ifdef __i386__
extern struct ldt_copy *__wine_ldt_copy;
#endif
PEB *peb = NtCurrentTeb()->Peb;
IMAGE_NT_HEADERS *nt = RtlImageNtHeader( peb->ImageBaseAddress );
void *entry = (char *)peb->ImageBaseAddress + nt->OptionalHeader.AddressOfEntryPoint;
NTSTATUS status;
int suspend;
unix_funcs->server_init_process_done();
/* 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( entry );
req->gui = (nt->OptionalHeader.Subsystem != IMAGE_SUBSYSTEM_WINDOWS_CUI);
status = wine_server_call( req );
suspend = reply->suspend;
}
SERVER_END_REQ;
assert( !status );
unix_funcs->start_process( entry, suspend, kernel32_start_process );
}
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