Copyright (C) 1985, 1986, 1987, 1988, 1992, 1993, 1994, 1995
Free Software Foundation, Inc.
Copyright (C) 1995 Sun Microsystems, Inc.
- Copyright (C) 1995, 1996 Ben Wing.
+ Copyright (C) 1995, 1996, 2000 Ben Wing.
This file is part of XEmacs.
#include <config.h>
#include "lisp.h"
+#include "console-msw.h"
#include "hash.h"
#include "lstream.h"
#include "process.h"
#include "procimpl.h"
#include "sysdep.h"
-#ifndef __MINGW32__
#include <shellapi.h>
-#else
+#ifdef __MINGW32__
#include <errno.h>
#endif
#include <signal.h>
struct nt_process_data
{
HANDLE h_process;
+ DWORD dwProcessId;
+ HWND hwnd; /* console window */
int need_enable_child_signals;
};
+/* Control whether create_child causes the process to inherit Emacs'
+ console window, or be given a new one of its own. The default is
+ nil, to allow multiple DOS programs to run on Win95. Having separate
+ consoles also allows Emacs to cleanly terminate process groups. */
+Lisp_Object Vmswindows_start_process_share_console;
+
+/* Control whether create_child cause the process to inherit Emacs'
+ error mode setting. The default is t, to minimize the possibility of
+ subprocesses blocking when accessing unmounted drives. */
+Lisp_Object Vmswindows_start_process_inherit_error_mode;
+
#define NT_DATA(p) ((struct nt_process_data*)((p)->process_data))
\f
/*-----------------------------------------------------------------------*/
{
return (NT_DATA (p)->h_process);
}
+
+static struct Lisp_Process *
+find_process_from_pid (DWORD pid)
+{
+ Lisp_Object tail, proc;
+
+ for (tail = Vprocess_list; CONSP (tail); tail = XCDR (tail))
+ {
+ proc = XCAR (tail);
+ if (NT_DATA (XPROCESS (proc))->dwProcessId == pid)
+ return XPROCESS (proc);
+ }
+ return 0;
+}
+
\f
/*-----------------------------------------------------------------------*/
/* Running remote threads. See Microsoft Systems Journal 1994 Number 5 */
/* Sending signals */
/*-----------------------------------------------------------------------*/
+/* ---------------------------- the NT way ------------------------------- */
+
/*
* We handle the following signals:
*
* Return nonzero if successful.
*/
-/* This code assigns a return value of GetProcAddress to function pointers
- of many different types. Instead of heavy obscure casts, we just disable
- warnings about assignments to different function pointer types. */
-#pragma warning (disable : 4113)
-
static int
-send_signal (HANDLE h_process, int signo)
+send_signal_the_nt_way (struct nt_process_data *cp, int pid, int signo)
{
+ HANDLE h_process;
HMODULE h_kernel = GetModuleHandle ("kernel32");
+ int close_process = 0;
DWORD retval;
assert (h_kernel != NULL);
+ if (cp)
+ {
+ pid = cp->dwProcessId;
+ h_process = cp->h_process;
+ }
+ else
+ {
+ close_process = 1;
+ /* Try to open the process with required privileges */
+ h_process = OpenProcess (PROCESS_CREATE_THREAD
+ | PROCESS_QUERY_INFORMATION
+ | PROCESS_VM_OPERATION
+ | PROCESS_VM_WRITE,
+ FALSE, pid);
+ if (!h_process)
+ return 0;
+ }
+
switch (signo)
{
case SIGKILL:
case SIGHUP:
{
sigkill_data d;
- d.adr_ExitProcess = GetProcAddress (h_kernel, "ExitProcess");
+
+ d.adr_ExitProcess =
+ (void (WINAPI *) (UINT)) GetProcAddress (h_kernel, "ExitProcess");
assert (d.adr_ExitProcess);
retval = run_in_other_process (h_process,
(LPTHREAD_START_ROUTINE)sigkill_proc,
{
sigint_data d;
d.adr_GenerateConsoleCtrlEvent =
+ (BOOL (WINAPI *) (DWORD, DWORD))
GetProcAddress (h_kernel, "GenerateConsoleCtrlEvent");
assert (d.adr_GenerateConsoleCtrlEvent);
d.event = CTRL_C_EVENT;
assert (0);
}
+ if (close_process)
+ CloseHandle (h_process);
return (int)retval > 0 ? 1 : 0;
}
assert (h_kernel != NULL);
d.adr_SetConsoleCtrlHandler =
+ (BOOL (WINAPI *) (LPVOID, BOOL))
GetProcAddress (h_kernel, "SetConsoleCtrlHandler");
assert (d.adr_SetConsoleCtrlHandler);
run_in_other_process (h_process, (LPTHREAD_START_ROUTINE)sig_enable_proc,
#pragma warning (default : 4113)
+/* ---------------------------- the 95 way ------------------------------- */
+
+static BOOL CALLBACK
+find_child_console (HWND hwnd, struct nt_process_data *cp)
+{
+ DWORD thread_id;
+ DWORD process_id;
+
+ thread_id = GetWindowThreadProcessId (hwnd, &process_id);
+ if (process_id == cp->dwProcessId)
+ {
+ char window_class[32];
+
+ GetClassName (hwnd, window_class, sizeof (window_class));
+ if (strcmp (window_class,
+ msw_windows9x_p ()
+ ? "tty"
+ : "ConsoleWindowClass") == 0)
+ {
+ cp->hwnd = hwnd;
+ return FALSE;
+ }
+ }
+ /* keep looking */
+ return TRUE;
+}
+
+static int
+send_signal_the_95_way (struct nt_process_data *cp, int pid, int signo)
+{
+ HANDLE h_process;
+ int close_process = 0;
+ int rc = 1;
+
+ if (cp)
+ {
+ pid = cp->dwProcessId;
+ h_process = cp->h_process;
+
+ /* Try to locate console window for process. */
+ EnumWindows (find_child_console, (LPARAM) cp);
+ }
+ else
+ {
+ close_process = 1;
+ /* Try to open the process with required privileges */
+ h_process = OpenProcess (PROCESS_TERMINATE, FALSE, pid);
+ if (!h_process)
+ return 0;
+ }
+
+ if (signo == SIGINT)
+ {
+ if (NILP (Vmswindows_start_process_share_console) && cp && cp->hwnd)
+ {
+ BYTE control_scan_code = (BYTE) MapVirtualKey (VK_CONTROL, 0);
+ BYTE vk_break_code = VK_CANCEL;
+ BYTE break_scan_code = (BYTE) MapVirtualKey (vk_break_code, 0);
+ HWND foreground_window;
+
+ if (break_scan_code == 0)
+ {
+ /* Fake Ctrl-C if we can't manage Ctrl-Break. */
+ vk_break_code = 'C';
+ break_scan_code = (BYTE) MapVirtualKey (vk_break_code, 0);
+ }
+
+ foreground_window = GetForegroundWindow ();
+ if (foreground_window)
+ {
+ /* NT 5.0, and apparently also Windows 98, will not allow
+ a Window to be set to foreground directly without the
+ user's involvement. The workaround is to attach
+ ourselves to the thread that owns the foreground
+ window, since that is the only thread that can set the
+ foreground window. */
+ DWORD foreground_thread, child_thread;
+ foreground_thread =
+ GetWindowThreadProcessId (foreground_window, NULL);
+ if (foreground_thread == GetCurrentThreadId ()
+ || !AttachThreadInput (GetCurrentThreadId (),
+ foreground_thread, TRUE))
+ foreground_thread = 0;
+
+ child_thread = GetWindowThreadProcessId (cp->hwnd, NULL);
+ if (child_thread == GetCurrentThreadId ()
+ || !AttachThreadInput (GetCurrentThreadId (),
+ child_thread, TRUE))
+ child_thread = 0;
+
+ /* Set the foreground window to the child. */
+ if (SetForegroundWindow (cp->hwnd))
+ {
+ /* Generate keystrokes as if user had typed Ctrl-Break or
+ Ctrl-C. */
+ keybd_event (VK_CONTROL, control_scan_code, 0, 0);
+ keybd_event (vk_break_code, break_scan_code,
+ (vk_break_code == 'C' ? 0 : KEYEVENTF_EXTENDEDKEY), 0);
+ keybd_event (vk_break_code, break_scan_code,
+ (vk_break_code == 'C' ? 0 : KEYEVENTF_EXTENDEDKEY)
+ | KEYEVENTF_KEYUP, 0);
+ keybd_event (VK_CONTROL, control_scan_code,
+ KEYEVENTF_KEYUP, 0);
+
+ /* Sleep for a bit to give time for Emacs frame to respond
+ to focus change events (if Emacs was active app). */
+ Sleep (100);
+
+ SetForegroundWindow (foreground_window);
+ }
+ /* Detach from the foreground and child threads now that
+ the foreground switching is over. */
+ if (foreground_thread)
+ AttachThreadInput (GetCurrentThreadId (),
+ foreground_thread, FALSE);
+ if (child_thread)
+ AttachThreadInput (GetCurrentThreadId (),
+ child_thread, FALSE);
+ }
+ }
+ /* Ctrl-Break is NT equivalent of SIGINT. */
+ else if (!GenerateConsoleCtrlEvent (CTRL_BREAK_EVENT, pid))
+ {
+#if 0 /* FSF Emacs */
+ DebPrint (("sys_kill.GenerateConsoleCtrlEvent return %d "
+ "for pid %lu\n", GetLastError (), pid));
+ errno = EINVAL;
+#endif
+ rc = 0;
+ }
+ }
+ else
+ {
+ if (NILP (Vmswindows_start_process_share_console) && cp && cp->hwnd)
+ {
+#if 1
+ if (msw_windows9x_p ())
+ {
+/*
+ Another possibility is to try terminating the VDM out-right by
+ calling the Shell VxD (id 0x17) V86 interface, function #4
+ "SHELL_Destroy_VM", ie.
+
+ mov edx,4
+ mov ebx,vm_handle
+ call shellapi
+
+ First need to determine the current VM handle, and then arrange for
+ the shellapi call to be made from the system vm (by using
+ Switch_VM_and_callback).
+
+ Could try to invoke DestroyVM through CallVxD.
+
+*/
+#if 0
+ /* On Win95, posting WM_QUIT causes the 16-bit subsystem
+ to hang when cmdproxy is used in conjunction with
+ command.com for an interactive shell. Posting
+ WM_CLOSE pops up a dialog that, when Yes is selected,
+ does the same thing. TerminateProcess is also less
+ than ideal in that subprocesses tend to stick around
+ until the machine is shutdown, but at least it
+ doesn't freeze the 16-bit subsystem. */
+ PostMessage (cp->hwnd, WM_QUIT, 0xff, 0);
+#endif
+ if (!TerminateProcess (h_process, 0xff))
+ {
+#if 0 /* FSF Emacs */
+ DebPrint (("sys_kill.TerminateProcess returned %d "
+ "for pid %lu\n", GetLastError (), pid));
+ errno = EINVAL;
+#endif
+ rc = 0;
+ }
+ }
+ else
+#endif
+ PostMessage (cp->hwnd, WM_CLOSE, 0, 0);
+ }
+ /* Kill the process. On W32 this doesn't kill child processes
+ so it doesn't work very well for shells which is why it's not
+ used in every case. */
+ else if (!TerminateProcess (h_process, 0xff))
+ {
+#if 0 /* FSF Emacs */
+ DebPrint (("sys_kill.TerminateProcess returned %d "
+ "for pid %lu\n", GetLastError (), pid));
+ errno = EINVAL;
+#endif
+ rc = 0;
+ }
+ }
+
+ if (close_process)
+ CloseHandle (h_process);
+
+ return rc;
+}
+
+/* -------------------------- all-OS functions ---------------------------- */
+
+static int
+send_signal (struct nt_process_data *cp, int pid, int signo)
+{
+ return send_signal_the_nt_way (cp, pid, signo)
+ || send_signal_the_95_way (cp, pid, signo);
+}
+
/*
* Signal error if SIGNO is not supported
*/
nt_finalize_process_data (Lisp_Process *p, int for_disksave)
{
assert (!for_disksave);
- if (NT_DATA(p)->h_process)
- CloseHandle (NT_DATA(p)->h_process);
+ if (NT_DATA (p)->h_process)
+ CloseHandle (NT_DATA (p)->h_process);
}
/*
signal_simple_error_2 ("Error starting", image_file, lisp_strerror (errno));
}
+static void
+ensure_console_window_exists ()
+{
+ if (msw_windows9x_p ())
+ msw_hide_console ();
+}
+
static int
nt_create_process (Lisp_Process *p,
Lisp_Object *argv, int nargv,
STARTUPINFO si;
PROCESS_INFORMATION pi;
DWORD err;
+ DWORD flags;
xzero (si);
si.dwFlags = STARTF_USESHOWWINDOW;
si.dwFlags |= STARTF_USESTDHANDLES;
}
- err = (CreateProcess (NULL, command_line, NULL, NULL, TRUE,
- CREATE_NEW_CONSOLE | CREATE_NEW_PROCESS_GROUP
- | CREATE_SUSPENDED,
+ flags = CREATE_SUSPENDED;
+ if (msw_windows9x_p ())
+ flags |= (!NILP (Vmswindows_start_process_share_console)
+ ? CREATE_NEW_PROCESS_GROUP
+ : CREATE_NEW_CONSOLE);
+ else
+ flags |= CREATE_NEW_CONSOLE | CREATE_NEW_PROCESS_GROUP;
+ if (NILP (Vmswindows_start_process_inherit_error_mode))
+ flags |= CREATE_DEFAULT_ERROR_MODE;
+
+ ensure_console_window_exists ();
+
+ err = (CreateProcess (NULL, command_line, NULL, NULL, TRUE, flags,
proc_env, (char *) XSTRING_DATA (cur_dir), &si, &pi)
? 0 : GetLastError ());
if (do_io)
{
NT_DATA(p)->h_process = pi.hProcess;
+ NT_DATA(p)->dwProcessId = pi.dwProcessId;
init_process_io_handles (p, (void*)hmyslurp, (void*)hmyshove, 0);
}
else
/* Enable child signals if necessary. This may lose the first
but it's better than nothing. */
- if (NT_DATA(p)->need_enable_child_signals > 0)
+ if (NT_DATA (p)->need_enable_child_signals > 0)
{
- enable_child_signals(NT_DATA(p)->h_process);
- NT_DATA(p)->need_enable_child_signals = 0;
+ enable_child_signals (NT_DATA(p)->h_process);
+ NT_DATA (p)->need_enable_child_signals = 0;
}
/* Signal error if SIGNO cannot be sent */
validate_signal_number (signo);
/* Send signal */
- if (!send_signal (NT_DATA(p)->h_process, signo))
- error ("Cannot send signal to process");
+ if (!send_signal (NT_DATA (p), 0, signo))
+ signal_simple_error ("Cannot send signal to process", proc);
}
/*
static int
nt_kill_process_by_pid (int pid, int signo)
{
- HANDLE h_process;
- int send_result;
-
+ struct Lisp_Process *p;
+
/* Signal error if SIGNO cannot be sent */
validate_signal_number (signo);
- /* Try to open the process with required privileges */
- h_process = OpenProcess (PROCESS_CREATE_THREAD
- | PROCESS_QUERY_INFORMATION
- | PROCESS_VM_OPERATION
- | PROCESS_VM_WRITE,
- FALSE, pid);
- if (h_process == NULL)
- return -1;
-
- send_result = send_signal (h_process, signo);
-
- CloseHandle (h_process);
-
- return send_result ? 0 : -1;
+ p = find_process_from_pid (pid);
+ return send_signal (p ? NT_DATA (p) : 0, pid, signo) ? 0 : -1;
}
\f
/*-----------------------------------------------------------------------*/
deactivate and close it via delete-process */
static void
-nt_open_network_stream (Lisp_Object name, Lisp_Object host, Lisp_Object service,
+nt_open_network_stream (Lisp_Object name, Lisp_Object host,
+ Lisp_Object service,
Lisp_Object protocol, void** vinfd, void** voutfd)
{
+ /* !!#### not Mule-ized */
struct sockaddr_in address;
SOCKET s;
int port;
CHECK_STRING (host);
if (!EQ (protocol, Qtcp))
- error ("Unsupported protocol \"%s\"",
- string_data (symbol_name (XSYMBOL (protocol))));
+ signal_simple_error ("Unsupported protocol", protocol);
if (INTP (service))
port = htons ((unsigned short) XINT (service));
CHECK_STRING (service);
svc_info = getservbyname ((char *) XSTRING_DATA (service), "tcp");
if (svc_info == 0)
- error ("Unknown service \"%s\"", XSTRING_DATA (service));
+ signal_simple_error ("Unknown service", service);
port = svc_info->s_port;
}
connect_failed:
closesocket (s);
- if (INTP (service)) {
- warn_when_safe(Qstream, Qwarning,
- "failure to open network stream to host \"%s\" for service \"%d\"",
- XSTRING_DATA (host),
- (unsigned short) XINT (service));
- }
- else {
- warn_when_safe(Qstream, Qwarning,
- "failure to open network stream to host \"%s\" for service \"%s\"",
- XSTRING_DATA (host),
- XSTRING_DATA (service));
- }
+ if (INTP (service))
+ {
+ warn_when_safe (Qstream, Qwarning,
+ "failure to open network stream to host \"%s\" for service \"%d\"",
+ XSTRING_DATA (host),
+ (unsigned short) XINT (service));
+ }
+ else
+ {
+ warn_when_safe (Qstream, Qwarning,
+ "failure to open network stream to host \"%s\" for service \"%s\"",
+ XSTRING_DATA (host),
+ XSTRING_DATA (service));
+ }
report_file_error ("connection failed", list2 (host, name));
}
void
vars_of_process_nt (void)
{
+ DEFVAR_LISP ("mswindows-start-process-share-console",
+ &Vmswindows_start_process_share_console /*
+When nil, new child processes are given a new console.
+When non-nil, they share the Emacs console; this has the limitation of
+allowing only only DOS subprocess to run at a time (whether started directly
+or indirectly by Emacs), and preventing Emacs from cleanly terminating the
+subprocess group, but may allow Emacs to interrupt a subprocess that doesn't
+otherwise respond to interrupts from Emacs.
+*/ );
+ Vmswindows_start_process_share_console = Qnil;
+
+ DEFVAR_LISP ("mswindows-start-process-inherit-error-mode",
+ &Vmswindows_start_process_inherit_error_mode /*
+ "When nil, new child processes revert to the default error mode.
+When non-nil, they inherit their error mode setting from Emacs, which stops
+them blocking when trying to access unmounted drives etc.
+*/ );
+ Vmswindows_start_process_inherit_error_mode = Qt;
}
projects / chise / xemacs-chise.git.1 / blobdiff