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kernel32: Create an orphaned process in exec_process so that all initialization is done anew in the child process.

This commit is contained in:
Alexandre Julliard 2011-06-16 22:46:25 +02:00
parent a0c0878805
commit 1b0d2330c9
1 changed files with 111 additions and 78 deletions
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189
dlls/kernel32/process.c
View File

@ -1785,6 +1785,85 @@ static BOOL terminate_main_thread(void)
}
#endif
/***********************************************************************
* exec_loader
*/
static pid_t exec_loader( LPCWSTR cmd_line, unsigned int flags, int socketfd,
int stdin_fd, int stdout_fd, const char *unixdir, char *winedebug,
const struct binary_info *binary_info, int exec_only )
{
pid_t pid;
char *wineloader = NULL;
const char *loader = NULL;
char **argv;
argv = build_argv( cmd_line, 1 );
if (!is_win64 ^ !(binary_info->flags & BINARY_FLAG_64BIT))
loader = get_alternate_loader( &wineloader );
if (exec_only || !(pid = fork())) /* child */
{
char preloader_reserve[64], socket_env[64];
if (flags & (CREATE_NEW_PROCESS_GROUP | CREATE_NEW_CONSOLE | DETACHED_PROCESS))
{
if (!(pid = fork()))
{
int fd = open( "/dev/null", O_RDWR );
setsid();
/* close stdin and stdout */
if (fd != -1)
{
dup2( fd, 0 );
dup2( fd, 1 );
close( fd );
}
}
else if (pid != -1) _exit(0); /* parent */
}
else
{
if (stdin_fd != -1) dup2( stdin_fd, 0 );
if (stdout_fd != -1) dup2( stdout_fd, 1 );
}
if (stdin_fd != -1) close( stdin_fd );
if (stdout_fd != -1) close( stdout_fd );
/* Reset signals that we previously set to SIG_IGN */
signal( SIGPIPE, SIG_DFL );
signal( SIGCHLD, SIG_DFL );
sprintf( socket_env, "WINESERVERSOCKET=%u", socketfd );
sprintf( preloader_reserve, "WINEPRELOADRESERVE=%lx-%lx",
(unsigned long)binary_info->res_start, (unsigned long)binary_info->res_end );
putenv( preloader_reserve );
putenv( socket_env );
if (winedebug) putenv( winedebug );
if (wineloader) putenv( wineloader );
if (unixdir) chdir(unixdir);
if (argv)
{
do
{
wine_exec_wine_binary( loader, argv, getenv("WINELOADER") );
}
#ifdef __APPLE__
while (errno == ENOTSUP && exec_only && terminate_main_thread());
#else
while (0);
#endif
}
_exit(1);
}
HeapFree( GetProcessHeap(), 0, wineloader );
HeapFree( GetProcessHeap(), 0, argv );
return pid;
}
/***********************************************************************
* create_process
*
@ -1801,9 +1880,6 @@ static BOOL create_process( HANDLE hFile, LPCWSTR filename, LPWSTR cmd_line, LPW
HANDLE process_info;
WCHAR *env_end;
char *winedebug = NULL;
char *wineloader = NULL;
const char *loader = NULL;
char **argv;
startup_info_t *startup_info;
DWORD startup_info_size;
int socketfd[2], stdin_fd = -1, stdout_fd = -1;
@ -1817,12 +1893,42 @@ static BOOL create_process( HANDLE hFile, LPCWSTR filename, LPWSTR cmd_line, LPW
return FALSE;
}
/* create the socket for the new process */
if (socketpair( PF_UNIX, SOCK_STREAM, 0, socketfd ) == -1)
{
SetLastError( ERROR_TOO_MANY_OPEN_FILES );
return FALSE;
}
if (exec_only) /* things are much simpler in this case */
{
wine_server_send_fd( socketfd[1] );
close( socketfd[1] );
SERVER_START_REQ( new_process )
{
req->create_flags = flags;
req->socket_fd = socketfd[1];
req->exe_file = wine_server_obj_handle( hFile );
ret = !wine_server_call_err( req );
}
SERVER_END_REQ;
if (ret) exec_loader( cmd_line, flags, socketfd[0], stdin_fd, stdout_fd, unixdir,
winedebug, binary_info, TRUE );
close( socketfd[0] );
return FALSE;
}
RtlAcquirePebLock();
if (!(startup_info = create_startup_info( filename, cmd_line, cur_dir, env, flags, startup,
&startup_info_size )))
{
RtlReleasePebLock();
close( socketfd[0] );
close( socketfd[1] );
return FALSE;
}
if (!env) env = NtCurrentTeb()->Peb->ProcessParameters->Environment;
@ -1840,16 +1946,6 @@ static BOOL create_process( HANDLE hFile, LPCWSTR filename, LPWSTR cmd_line, LPW
}
env_end++;
/* create the socket for the new process */
if (socketpair( PF_UNIX, SOCK_STREAM, 0, socketfd ) == -1)
{
RtlReleasePebLock();
HeapFree( GetProcessHeap(), 0, winedebug );
HeapFree( GetProcessHeap(), 0, startup_info );
SetLastError( ERROR_TOO_MANY_OPEN_FILES );
return FALSE;
}
wine_server_send_fd( socketfd[1] );
close( socketfd[1] );
@ -1901,77 +1997,14 @@ static BOOL create_process( HANDLE hFile, LPCWSTR filename, LPWSTR cmd_line, LPW
HeapFree( GetProcessHeap(), 0, startup_info );
/* create the child process */
argv = build_argv( cmd_line, 1 );
if (!is_win64 ^ !(binary_info->flags & BINARY_FLAG_64BIT))
loader = get_alternate_loader( &wineloader );
if (exec_only || !(pid = fork())) /* child */
{
char preloader_reserve[64], socket_env[64];
if (flags & (CREATE_NEW_PROCESS_GROUP | CREATE_NEW_CONSOLE | DETACHED_PROCESS))
{
if (!(pid = fork()))
{
int fd = open( "/dev/null", O_RDWR );
setsid();
/* close stdin and stdout */
if (fd != -1)
{
dup2( fd, 0 );
dup2( fd, 1 );
close( fd );
}
}
else if (pid != -1) _exit(0); /* parent */
}
else
{
if (stdin_fd != -1) dup2( stdin_fd, 0 );
if (stdout_fd != -1) dup2( stdout_fd, 1 );
}
if (stdin_fd != -1) close( stdin_fd );
if (stdout_fd != -1) close( stdout_fd );
/* Reset signals that we previously set to SIG_IGN */
signal( SIGPIPE, SIG_DFL );
signal( SIGCHLD, SIG_DFL );
sprintf( socket_env, "WINESERVERSOCKET=%u", socketfd[0] );
sprintf( preloader_reserve, "WINEPRELOADRESERVE=%lx-%lx",
(unsigned long)binary_info->res_start, (unsigned long)binary_info->res_end );
putenv( preloader_reserve );
putenv( socket_env );
if (winedebug) putenv( winedebug );
if (wineloader) putenv( wineloader );
if (unixdir) chdir(unixdir);
if (argv)
{
do
{
wine_exec_wine_binary( loader, argv, getenv("WINELOADER") );
}
#ifdef __APPLE__
while (errno == ENOTSUP && exec_only && terminate_main_thread());
#else
while (0);
#endif
}
_exit(1);
}
/* this is the parent */
pid = exec_loader( cmd_line, flags, socketfd[0], stdin_fd, stdout_fd, unixdir,
winedebug, binary_info, FALSE );
if (stdin_fd != -1) close( stdin_fd );
if (stdout_fd != -1) close( stdout_fd );
close( socketfd[0] );
HeapFree( GetProcessHeap(), 0, argv );
HeapFree( GetProcessHeap(), 0, winedebug );
HeapFree( GetProcessHeap(), 0, wineloader );
if (pid == -1)
{
FILE_SetDosError();