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 "buffer.h"
+#include "console-msw.h"
#include "hash.h"
#include "lstream.h"
+#include "nt.h"
#include "process.h"
#include "procimpl.h"
#include "sysdep.h"
-#include <windows.h>
-#ifndef __MINGW32__
#include <shellapi.h>
-#else
+#ifdef __MINGW32__
#include <errno.h>
#endif
#include <signal.h>
/* Arbitrary size limit for code fragments passed to run_in_other_process */
#define FRAGMENT_CODE_SIZE 32
-/* Bound by winnt.el */
-Lisp_Object Qnt_quote_process_args;
-
/* Implementation-specific data. Pointed to by Lisp_Process->process_data */
struct nt_process_data
{
HANDLE h_process;
+ DWORD dwProcessId;
+ HWND hwnd; /* console window */
int need_enable_child_signals;
};
+/* Control how args are quoted to ensure correct parsing by child
+ process. */
+Lisp_Object Vmswindows_quote_process_args;
+
+/* 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
/*-----------------------------------------------------------------------*/
/* This one breaks process abstraction. Prototype is in console-msw.h,
used by select_process method in event-msw.c */
HANDLE
-get_nt_process_handle (struct Lisp_Process *p)
+get_nt_process_handle (Lisp_Process *p)
{
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 */
LPVOID data, size_t data_size)
{
process_memory pm;
- CONST size_t code_size = FRAGMENT_CODE_SIZE;
+ const size_t code_size = FRAGMENT_CODE_SIZE;
/* Need at most 3 extra bytes of memory, for data alignment */
size_t total_size = code_size + data_size + 3;
LPVOID remote_data;
/* 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
*/
*/
static void
-nt_alloc_process_data (struct Lisp_Process *p)
+nt_alloc_process_data (Lisp_Process *p)
{
p->process_data = xnew_and_zero (struct nt_process_data);
}
static void
-nt_finalize_process_data (struct Lisp_Process *p, int for_disksave)
+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 (void)
+{
+ if (msw_windows9x_p ())
+ msw_hide_console ();
+}
+
+int
+compare_env (const void *strp1, const void *strp2)
+{
+ const char *str1 = *(const char**)strp1, *str2 = *(const char**)strp2;
+
+ while (*str1 && *str2 && *str1 != '=' && *str2 != '=')
+ {
+ if ((*str1) > (*str2))
+ return 1;
+ else if ((*str1) < (*str2))
+ return -1;
+ str1++, str2++;
+ }
+
+ if (*str1 == '=' && *str2 == '=')
+ return 0;
+ else if (*str1 == '=')
+ return -1;
+ else
+ return 1;
+}
+
static int
-nt_create_process (struct Lisp_Process *p,
+nt_create_process (Lisp_Process *p,
Lisp_Object *argv, int nargv,
Lisp_Object program, Lisp_Object cur_dir)
{
+ /* Synched up with sys_spawnve in FSF 20.6. Significantly different
+ but still synchable. */
HANDLE hmyshove, hmyslurp, hprocin, hprocout, hprocerr;
- LPTSTR command_line;
+ Extbyte *command_line;
BOOL do_io, windowed;
char *proc_env;
+ /* No need to DOS-ize the filename; expand-file-name (called prior)
+ already does this. */
+
/* Find out whether the application is windowed or not */
{
/* SHGetFileInfo tends to return ERROR_FILE_NOT_FOUND on most
CreatePipe (&hmyslurp, &hprocout, &sa, 0);
/* Duplicate the stdout handle for use as stderr */
- DuplicateHandle(GetCurrentProcess(), hprocout, GetCurrentProcess(), &hprocerr,
- 0, TRUE, DUPLICATE_SAME_ACCESS);
+ DuplicateHandle(GetCurrentProcess(), hprocout, GetCurrentProcess(),
+ &hprocerr, 0, TRUE, DUPLICATE_SAME_ACCESS);
/* Stupid Win32 allows to create a pipe with *both* ends either
inheritable or not. We need process ends inheritable, and local
ends not inheritable. */
- DuplicateHandle (GetCurrentProcess(), hmyshove, GetCurrentProcess(), &htmp,
- 0, FALSE, DUPLICATE_CLOSE_SOURCE | DUPLICATE_SAME_ACCESS);
+ DuplicateHandle (GetCurrentProcess(), hmyshove, GetCurrentProcess(),
+ &htmp, 0, FALSE,
+ DUPLICATE_CLOSE_SOURCE | DUPLICATE_SAME_ACCESS);
hmyshove = htmp;
- DuplicateHandle (GetCurrentProcess(), hmyslurp, GetCurrentProcess(), &htmp,
- 0, FALSE, DUPLICATE_CLOSE_SOURCE | DUPLICATE_SAME_ACCESS);
+ DuplicateHandle (GetCurrentProcess(), hmyslurp, GetCurrentProcess(),
+ &htmp, 0, FALSE,
+ DUPLICATE_CLOSE_SOURCE | DUPLICATE_SAME_ACCESS);
hmyslurp = htmp;
}
- /* Convert an argv vector into Win32 style command line by a call to
- lisp function `nt-quote-process-args' which see (in winnt.el)*/
+ /* Convert an argv vector into Win32 style command line. */
{
int i;
- Lisp_Object args_or_ret = Qnil;
- struct gcpro gcpro1;
+ Bufbyte **quoted_args;
+ int is_dos_app, is_cygnus_app;
+ int do_quoting = 0;
+ char escape_char = 0;
+
+ nargv++; /* include program; we access argv offset by 1 below */
+ quoted_args = alloca_array (Bufbyte *, nargv);
+
+ /* Determine whether program is a 16-bit DOS executable, or a Win32
+ executable that is implicitly linked to the Cygnus dll (implying it
+ was compiled with the Cygnus GNU toolchain and hence relies on
+ cygwin.dll to parse the command line - we use this to decide how to
+ escape quote chars in command line args that must be quoted). */
+ mswindows_executable_type (XSTRING_DATA (program),
+ &is_dos_app, &is_cygnus_app);
+
+#if 0
+ /* #### we need to port this. */
+ /* On Windows 95, if cmdname is a DOS app, we invoke a helper
+ application to start it by specifying the helper app as cmdname,
+ while leaving the real app name as argv[0]. */
+ if (is_dos_app)
+ {
+ cmdname = (char*) alloca (MAXPATHLEN);
+ if (egetenv ("CMDPROXY"))
+ strcpy ((char*)cmdname, egetenv ("CMDPROXY"));
+ else
+ {
+ strcpy ((char*)cmdname, XSTRING_DATA (Vinvocation_directory));
+ strcat ((char*)cmdname, "cmdproxy.exe");
+ }
+ }
+#endif
+
+ /* we have to do some conjuring here to put argv and envp into the
+ form CreateProcess wants... argv needs to be a space separated/null
+ terminated list of parameters, and envp is a null
+ separated/double-null terminated list of parameters.
+
+ Additionally, zero-length args and args containing whitespace or
+ quote chars need to be wrapped in double quotes - for this to work,
+ embedded quotes need to be escaped as well. The aim is to ensure
+ the child process reconstructs the argv array we start with
+ exactly, so we treat quotes at the beginning and end of arguments
+ as embedded quotes.
+
+ The Win32 GNU-based library from Cygnus doubles quotes to escape
+ them, while MSVC uses backslash for escaping. (Actually the MSVC
+ startup code does attempt to recognize doubled quotes and accept
+ them, but gets it wrong and ends up requiring three quotes to get a
+ single embedded quote!) So by default we decide whether to use
+ quote or backslash as the escape character based on whether the
+ binary is apparently a Cygnus compiled app.
+
+ Note that using backslash to escape embedded quotes requires
+ additional special handling if an embedded quote is already
+ preceded by backslash, or if an arg requiring quoting ends with
+ backslash. In such cases, the run of escape characters needs to be
+ doubled. For consistency, we apply this special handling as long
+ as the escape character is not quote.
+
+ Since we have no idea how large argv and envp are likely to be we
+ figure out list lengths on the fly and allocate them. */
+
+ if (!NILP (Vmswindows_quote_process_args))
+ {
+ do_quoting = 1;
+ /* Override escape char by binding mswindows-quote-process-args to
+ desired character, or use t for auto-selection. */
+ if (INTP (Vmswindows_quote_process_args))
+ escape_char = (char) XINT (Vmswindows_quote_process_args);
+ else
+ escape_char = is_cygnus_app ? '"' : '\\';
+ }
+
+ /* do argv... */
+ for (i = 0; i < nargv; ++i)
+ {
+ Bufbyte *targ = XSTRING_DATA (i == 0 ? program : argv[i - 1]);
+ Bufbyte *p = targ;
+ int need_quotes = 0;
+ int escape_char_run = 0;
+ int arglen = 0;
+
+ if (*p == 0)
+ need_quotes = 1;
+ for ( ; *p; p++)
+ {
+ if (*p == '"')
+ {
+ /* allow for embedded quotes to be escaped */
+ arglen++;
+ need_quotes = 1;
+ /* handle the case where the embedded quote is already escaped */
+ if (escape_char_run > 0)
+ {
+ /* To preserve the arg exactly, we need to double the
+ preceding escape characters (plus adding one to
+ escape the quote character itself). */
+ arglen += escape_char_run;
+ }
+ }
+ else if (*p == ' ' || *p == '\t')
+ {
+ need_quotes = 1;
+ }
+
+ if (*p == escape_char && escape_char != '"')
+ escape_char_run++;
+ else
+ escape_char_run = 0;
+ }
+ if (need_quotes)
+ {
+ arglen += 2;
+ /* handle the case where the arg ends with an escape char - we
+ must not let the enclosing quote be escaped. */
+ if (escape_char_run > 0)
+ arglen += escape_char_run;
+ }
+ arglen += strlen (targ) + 1;
- GCPRO1 (args_or_ret);
+ quoted_args[i] = alloca_array (Bufbyte, arglen);
+ }
for (i = 0; i < nargv; ++i)
- args_or_ret = Fcons (*argv++, args_or_ret);
- args_or_ret = Fnreverse (args_or_ret);
- args_or_ret = Fcons (program, args_or_ret);
+ {
+ Bufbyte *targ = XSTRING_DATA (i == 0 ? program : argv[i - 1]);
+ Bufbyte *p = targ;
+ int need_quotes = 0;
+ Bufbyte *parg = quoted_args[i];
- args_or_ret = call1 (Qnt_quote_process_args, args_or_ret);
+ if (*p == 0)
+ need_quotes = 1;
+
+ if (do_quoting)
+ {
+ for ( ; *p; p++)
+ if (*p == ' ' || *p == '\t' || *p == '"')
+ need_quotes = 1;
+ }
+ if (need_quotes)
+ {
+ int escape_char_run = 0;
+ Bufbyte * first;
+ Bufbyte * last;
+
+ p = targ;
+ first = p;
+ last = p + strlen (p) - 1;
+ *parg++ = '"';
+#if 0
+ /* This version does not escape quotes if they occur at the
+ beginning or end of the arg - this could lead to incorrect
+ behavior when the arg itself represents a command line
+ containing quoted args. I believe this was originally done
+ as a hack to make some things work, before
+ `mswindows-quote-process-args' was added. */
+ while (*p)
+ {
+ if (*p == '"' && p > first && p < last)
+ *parg++ = escape_char; /* escape embedded quotes */
+ *parg++ = *p++;
+ }
+#else
+ for ( ; *p; p++)
+ {
+ if (*p == '"')
+ {
+ /* double preceding escape chars if any */
+ while (escape_char_run > 0)
+ {
+ *parg++ = escape_char;
+ escape_char_run--;
+ }
+ /* escape all quote chars, even at beginning or end */
+ *parg++ = escape_char;
+ }
+ *parg++ = *p;
+
+ if (*p == escape_char && escape_char != '"')
+ escape_char_run++;
+ else
+ escape_char_run = 0;
+ }
+ /* double escape chars before enclosing quote */
+ while (escape_char_run > 0)
+ {
+ *parg++ = escape_char;
+ escape_char_run--;
+ }
+#endif
+ *parg++ = '"';
+ }
+ else
+ {
+ strcpy (parg, targ);
+ parg += strlen (targ);
+ }
+ *parg = '\0';
+ }
- if (!STRINGP (args_or_ret))
- /* Luser wrote his/her own clever version */
- error ("Bogus return value from `nt-quote-process-args'");
+ {
+ int total_cmdline_len = 0;
+ Extcount *extargcount = (Extcount *) alloca_array (Extcount, nargv);
+ Extbyte **extarg = (Extbyte **) alloca_array (Extbyte *, nargv);
+ Extbyte *command_ptr;
- command_line = alloca_array (char, (XSTRING_LENGTH (program)
- + XSTRING_LENGTH (args_or_ret) + 2));
- strcpy (command_line, XSTRING_DATA (program));
- strcat (command_line, " ");
- strcat (command_line, XSTRING_DATA (args_or_ret));
+ for (i = 0; i < nargv; ++i)
+ {
+ TO_EXTERNAL_FORMAT (C_STRING, quoted_args[i], ALLOCA,
+ (extarg[i], extargcount[i]), Qmswindows_tstr);
+ /* account for space and terminating null */
+ total_cmdline_len += extargcount[i] + EITCHAR_SIZE;
+ }
- UNGCPRO; /* args_or_ret */
+ command_line = alloca_array (char, total_cmdline_len);
+ command_ptr = command_line;
+ for (i = 0; i < nargv; ++i)
+ {
+ memcpy (command_ptr, extarg[i], extargcount[i]);
+ command_ptr += extargcount[i];
+ EICOPY_TCHAR (command_ptr, ' ');
+ command_ptr += EITCHAR_SIZE;
+ }
+ EICOPY_TCHAR (command_ptr, '\0');
+ command_ptr += EITCHAR_SIZE;
+ }
}
-
/* Set `proc_env' to a nul-separated array of the strings in
Vprocess_environment terminated by 2 nuls. */
{
- extern int compare_env (const char **strp1, const char **strp2);
char **env;
REGISTER Lisp_Object tem;
REGISTER char **new_env;
&& STRINGP (XCAR (tem)));
tem = XCDR (tem))
new_length++;
+
+ /* FSF adds an extra env var to hold the current process ID of the
+ Emacs process. Apparently this is used only by emacsserver.c,
+ which we have superseded to gnuserv.c. (#### Does it work under
+ MS Windows?)
+
+ sprintf (ppid_env_var_buffer, "EM_PARENT_PROCESS_ID=%d",
+ GetCurrentProcessId ());
+ arglen += strlen (ppid_env_var_buffer) + 1;
+ numenv++;
+ */
/* new_length + 1 to include terminating 0. */
env = new_env = alloca_array (char *, new_length + 1);
new_space++;
/* Allocate space and copy variables into it */
- penv = proc_env = alloca(new_space);
+ penv = proc_env = (char*) alloca(new_space);
for (i = 0; i < new_length; i++)
{
strcpy(penv, env[i]);
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
*/
static void
-nt_update_status_if_terminated (struct Lisp_Process* p)
+nt_update_status_if_terminated (Lisp_Process* p)
{
DWORD exit_code;
nt_send_process (Lisp_Object proc, struct lstream* lstream)
{
volatile Lisp_Object vol_proc = proc;
- struct Lisp_Process *volatile p = XPROCESS (proc);
+ Lisp_Process *volatile p = XPROCESS (proc);
/* use a reasonable-sized buffer (somewhere around the size of the
stream buffer) so as to avoid inundating the stream with blocked
data. */
- Bufbyte chunkbuf[128];
+ Bufbyte chunkbuf[512];
Bytecount chunklen;
while (1)
{
ssize_t writeret;
- chunklen = Lstream_read (lstream, chunkbuf, 128);
+ chunklen = Lstream_read (lstream, chunkbuf, 512);
if (chunklen <= 0)
break; /* perhaps should abort() if < 0?
This should never happen. */
nt_kill_child_process (Lisp_Object proc, int signo,
int current_group, int nomsg)
{
- struct Lisp_Process *p = XPROCESS (proc);
+ Lisp_Process *p = XPROCESS (proc);
/* 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);
}
/*
- * Kill any process in the system given its PID.
+ * Kill any process in the system given its PID
*
* Returns zero if a signal successfully sent, or
* negative number upon failure
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
syms_of_process_nt (void)
{
- defsymbol (&Qnt_quote_process_args, "nt-quote-process-args");
}
void
vars_of_process_nt (void)
{
+ DEFVAR_LISP ("mswindows-quote-process-args",
+ &Vmswindows_quote_process_args /*
+Non-nil enables quoting of process arguments to ensure correct parsing.
+Because Windows does not directly pass argv arrays to child processes,
+programs have to reconstruct the argv array by parsing the command
+line string. For an argument to contain a space, it must be enclosed
+in double quotes or it will be parsed as multiple arguments.
+
+If the value is a character, that character will be used to escape any
+quote characters that appear, otherwise a suitable escape character
+will be chosen based on the type of the program (normal or Cygwin).
+*/ );
+ Vmswindows_quote_process_args = Qt;
+
+ 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- / blobdiff