/* Fully extensible Emacs, running on Unix, intended for GNU.
- Copyright (C) 1985, 1986, 1987, 1992, 1993 Free Software Foundation, Inc.
+ Copyright (C) 1985, 1986, 1987, 1993 Free Software Foundation, Inc.
This file is part of GNU Emacs.
#include <signal.h>
#include <errno.h>
-#include "config.h"
+#include <config.h>
#include <stdio.h>
#include <sys/types.h>
#include <sys/ioctl.h>
#endif
-#ifdef HAVE_TERMIOS
-#include <termios.h>
-#endif
-
#ifdef APOLLO
#ifndef APOLLO_SR10
#include <default_acl.h>
#include "systty.h"
#include "syssignal.h"
+#include "process.h"
#ifndef O_RDWR
#define O_RDWR 2
#endif
-#define PRIO_PROCESS 0
-
/* Command line args from shell, as list of strings */
Lisp_Object Vcommand_line_args;
+/* The name under which Emacs was invoked, with any leading directory
+ names discarded. */
+Lisp_Object Vinvocation_name;
+
+/* The directory name from which Emacs was invoked. */
+Lisp_Object Vinvocation_directory;
+
/* Hook run by `kill-emacs' before it does really anything. */
Lisp_Object Vkill_emacs_hook;
priority; Those functions have their own extern declaration. */
int emacs_priority;
+#ifdef BSD
+/* See sysdep.c. */
+extern int inherited_pgroup;
+#endif
+
#ifdef HAVE_X_WINDOWS
/* If non-zero, -d was specified, meaning we're using some window system. */
int display_arg;
{
fatal_error_in_progress = 1;
- shut_down_emacs (sig);
+ shut_down_emacs (sig, 0, Qnil);
}
#ifdef VMS
Remember that since we're in a signal handler, the signal we're
going to send is probably blocked, so we have to unblock it if we
want to really receive it. */
- sigblock(SIGEMPTYMASK);
+ sigunblock (sigmask (fatal_error_code));
kill (getpid (), fatal_error_code);
#endif /* not VMS */
}
{
register int i;
+ Vinvocation_name = Ffile_name_nondirectory (build_string (argv[0]));
+ Vinvocation_directory = Ffile_name_directory (build_string (argv[0]));
+ /* If we got no directory in argv[0], search PATH to find where
+ Emacs actually came from. */
+ if (NILP (Vinvocation_directory))
+ {
+ Lisp_Object found;
+ int yes = openp (Vexec_path, Vinvocation_name,
+ EXEC_SUFFIXES, &found, 1);
+ if (yes == 1)
+ Vinvocation_directory = Ffile_name_directory (found);
+ }
+
Vcommand_line_args = Qnil;
for (i = argc - 1; i >= 0; i--)
= Fcons (build_string (argv[i]), Vcommand_line_args);
}
}
+
+DEFUN ("invocation-name", Finvocation_name, Sinvocation_name, 0, 0, 0,
+ "Return the program name that was used to run Emacs.\n\
+Any directory names are omitted.")
+ ()
+{
+ return Fcopy_sequence (Vinvocation_name);
+}
+
+DEFUN ("invocation-directory", Finvocation_directory, Sinvocation_directory,
+ 0, 0, 0,
+ "Return the directory name in which the Emacs executable was located")
+ ()
+{
+ return Fcopy_sequence (Vinvocation_directory);
+}
+
\f
#ifdef VMS
#ifdef LINK_CRTL_SHARE
#endif /* LINK_CRTL_SHARE */
#endif /* VMS */
+#ifndef ORDINARY_LINK
/* We don't include crtbegin.o and crtend.o in the link,
so these functions and variables might be missed.
Provide dummy definitions to avoid error.
{}
__do_global_dtors ()
{}
+/* Linux has a bug in its library; avoid an error. */
+#ifndef LINUX
char * __CTOR_LIST__[2] = { (char *) (-1), 0 };
+#endif
char * __DTOR_LIST__[2] = { (char *) (-1), 0 };
__main ()
{}
#endif /* __GNUC__ */
+#endif /* ORDINARY_LINK */
/* ARGSUSED */
main (argc, argv, envp)
#endif
#ifdef NeXT
- static int malloc_cookie;
+ extern int malloc_cookie;
/* This helps out unexnext.c. */
if (initialized)
int i;
for (i = 1; (i < argc && ! display_arg); i++)
- if (!strcmp (argv[i], "-d"))
+ if (!strcmp (argv[i], "-d") || !strcmp (argv[i], "-display"))
display_arg = 1;
}
#endif
#endif
clearerr (stdin);
+
#ifdef BSD
- setpgrp (0, getpid ());
+ {
+ inherited_pgroup = getpgrp (0);
+ setpgrp (0, getpid ());
+ }
#endif
+
#ifdef APOLLO
#ifndef APOLLO_SR10
/* If USE_DOMAIN_ACLS environment variable exists,
#ifndef SYSTEM_MALLOC
if (! initialized)
- memory_warnings (0, malloc_warning);
+ {
+ /* Arrange to get warning messages as memory fills up. */
+ memory_warnings (0, malloc_warning);
+
+ /* Arrange to disable interrupt input while malloc and friends are
+ running. */
+ uninterrupt_malloc ();
+ }
#endif /* not SYSTEM_MALLOC */
#ifdef PRIO_PROCESS
setuid (getuid ());
#endif /* PRIO_PROCESS */
-#ifdef BSD
- /* interrupt_input has trouble if we aren't in a separate process group. */
- setpgrp (getpid (), getpid ());
-#endif
-
inhibit_window_system = 0;
/* Handle the -t switch, which specifies filename to use as terminal */
signal (SIGQUIT, fatal_error_signal);
signal (SIGILL, fatal_error_signal);
signal (SIGTRAP, fatal_error_signal);
+#ifdef SIGIOT
+ /* This is missing on some systems - OS/2, for example. */
signal (SIGIOT, fatal_error_signal);
+#endif
#ifdef SIGEMT
signal (SIGEMT, fatal_error_signal);
#endif
signal (SIGFPE, fatal_error_signal);
+#ifdef SIGBUS
signal (SIGBUS, fatal_error_signal);
+#endif
signal (SIGSEGV, fatal_error_signal);
+#ifdef SIGSYS
signal (SIGSYS, fatal_error_signal);
+#endif
signal (SIGTERM, fatal_error_signal);
#ifdef SIGXCPU
signal (SIGXCPU, fatal_error_signal);
signal (SIGAIO, fatal_error_signal);
signal (SIGPTY, fatal_error_signal);
#endif
+#ifndef _I386
signal (SIGIOINT, fatal_error_signal);
+#endif
signal (SIGGRANT, fatal_error_signal);
signal (SIGRETRACT, fatal_error_signal);
signal (SIGSOUND, fatal_error_signal);
until calling init_callproc. */
set_process_environment ();
+ init_buffer (); /* Init default directory of main buffer */
+
+ init_callproc (); /* Must precede init_cmdargs and init_sys_modes. */
+ init_cmdargs (argc, argv, skip_args); /* Must precede init_lread. */
init_lread ();
- init_cmdargs (argc, argv, skip_args); /* Create list Vcommand_line_args */
- init_buffer (); /* Init default directory of main buffer */
if (!noninteractive)
{
#ifdef VMS
init_display (); /* Determine terminal type. init_sys_modes uses results */
}
init_keyboard (); /* This too must precede init_sys_modes */
- init_callproc (); /* And this too. */
#ifdef VMS
init_vmsproc (); /* And this too. */
#endif /* VMS */
syms_of_print ();
syms_of_eval ();
syms_of_fns ();
-#ifdef LISP_FLOAT_TYPE
syms_of_floatfns ();
-#endif
syms_of_abbrev ();
syms_of_buffer ();
#ifdef HAVE_X_WINDOWS
syms_of_xterm ();
syms_of_xfns ();
+ syms_of_xfaces ();
#ifdef HAVE_X11
syms_of_xselect ();
#endif
initialized = 1;
-#ifdef sun
- /* sun's localtime() has a bug. it caches the value of the time
+#if defined (sun) || defined (LOCALTIME_CACHE)
+ /* sun's localtime has a bug. it caches the value of the time
zone rather than looking it up every time. Since localtime() is
called to bolt the undumping time into the undumped emacs, this
- results in localtime() ignoring the TZ environment variable.
- This flushes the new TZ value into localtime(). */
- tzset();
-#endif /* sun */
+ results in localtime ignoring the TZ environment variable.
+ This flushes the new TZ value into localtime. */
+ tzset ();
+#endif /* defined (sun) || defined (LOCALTIME_CACHE) */
/* Enter editor command loop. This never returns. */
Frecursive_edit ();
if (!NILP (Vrun_hooks) && !noninteractive)
call1 (Vrun_hooks, intern ("kill-emacs-hook"));
-#ifdef HAVE_X_WINDOWS
- if (!noninteractive && EQ (Vwindow_system, intern ("x")))
- Fx_close_current_connection ();
-#endif /* HAVE_X_WINDOWS */
-
UNGCPRO;
/* Is it really necessary to do this deassign
/* #ifdef VMS
stop_vms_input ();
#endif */
- stuff_buffered_input (arg);
- shut_down_emacs (0);
+ shut_down_emacs (0, 0, STRINGP (arg) ? arg : Qnil);
exit ((XTYPE (arg) == Lisp_Int) ? XINT (arg)
#ifdef VMS
This is called by fatal signal handlers, X protocol error handlers,
and Fkill_emacs. */
+
void
-shut_down_emacs (sig)
- int sig;
+shut_down_emacs (sig, no_x, stuff)
+ int sig, no_x;
+ Lisp_Object stuff;
{
/* If we are controlling the terminal, reset terminal modes */
#ifdef EMACS_HAVE_TTY_PGRP
{
+#ifdef USG
+ int pgrp = getpgrp ();
+#else
+ int pgrp = getpgrp (0);
+#endif
int tpgrp;
if (EMACS_GET_TTY_PGRP (0, &tpgrp) != -1
- && tpgrp == getpgrp (0))
+ && tpgrp == pgrp)
{
fflush (stdout);
reset_sys_modes ();
reset_sys_modes ();
#endif
+ stuff_buffered_input (stuff);
+
kill_buffer_processes (Qnil);
Fdo_auto_save (Qt, Qnil);
kill_vms_processes ();
#endif
+#ifdef HAVE_X_WINDOWS
+ if (!noninteractive && EQ (Vwindow_system, intern ("x")) && ! no_x)
+ Fx_close_current_connection ();
+#endif /* HAVE_X_WINDOWS */
+
#ifdef SIGIO
/* There is a tendency for a SIGIO signal to arrive within exit,
and cause a SIGHUP because the input descriptor is already closed. */
#endif /* not CANNOT_DUMP */
\f
-#ifdef VMS
-#define SEPCHAR ','
-#else
+#ifndef SEPCHAR
#define SEPCHAR ':'
#endif
syms_of_emacs ()
{
+#ifndef CANNOT_DUMP
#ifdef HAVE_SHM
defsubr (&Sdump_emacs_data);
#else
defsubr (&Sdump_emacs);
+#endif
#endif
defsubr (&Skill_emacs);
+ defsubr (&Sinvocation_name);
+ defsubr (&Sinvocation_directory);
+
DEFVAR_LISP ("command-line-args", &Vcommand_line_args,
"Args passed by shell to Emacs, as a list of strings.");
"Hook to be run whenever kill-emacs is called.\n\
Since kill-emacs may be invoked when the terminal is disconnected (or\n\
in other similar situations), functions placed on this hook should not\n\
-not expect to be able to interact with the user.");
+expect to be able to interact with the user.");
Vkill_emacs_hook = Qnil;
DEFVAR_INT ("emacs-priority", &emacs_priority,
and only if the Emacs executable is installed with setuid to permit\n\
it to change priority. (Emacs sets its uid back to the real uid.)");
emacs_priority = 0;
+
+ staticpro (&Vinvocation_name);
+ Vinvocation_name = Qnil;
+ staticpro (&Vinvocation_directory);
+ Vinvocation_directory = Qnil;
}
HCoop / bpt / emacs.git / blobdiff