138 lines
3.4 KiB
Modula-2
138 lines
3.4 KiB
Modula-2
This file is exit.def, from which is created exit.c.
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It implements the builtins "exit", and "logout" in Bash.
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Copyright (C) 1987, 1989, 1991 Free Software Foundation, Inc.
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This file is part of GNU Bash, the Bourne Again SHell.
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Bash is free software; you can redistribute it and/or modify it under
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the terms of the GNU General Public License as published by the Free
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Software Foundation; either version 1, or (at your option) any later
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version.
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Bash is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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for more details.
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You should have received a copy of the GNU General Public License along
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with Bash; see the file COPYING. If not, write to the Free Software
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Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
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$PRODUCES exit.c
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$BUILTIN exit
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$FUNCTION exit_builtin
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$SHORT_DOC exit [n]
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Exit the shell with a status of N. If N is omitted, the exit status
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is that of the last command executed.
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$END
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#include <config.h>
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#include "../bashtypes.h"
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#include <stdio.h>
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#if defined (HAVE_UNISTD_H)
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# include <unistd.h>
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#endif
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#include "../shell.h"
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#include "../jobs.h"
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#include "common.h"
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#include "builtext.h" /* for jobs_builtin */
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extern int interactive, login_shell;
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extern int last_command_exit_value;
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extern Function *this_shell_builtin;
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extern Function *last_shell_builtin;
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static int exit_or_logout ();
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static int sourced_logout;
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int
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exit_builtin (list)
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WORD_LIST *list;
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{
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if (interactive)
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{
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fprintf (stderr, login_shell ? "logout\n" : "exit\n");
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fflush (stderr);
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}
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return (exit_or_logout (list));
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}
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$BUILTIN logout
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$FUNCTION logout_builtin
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$SHORT_DOC logout
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Logout of a login shell.
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$END
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/* How to logout. */
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int
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logout_builtin (list)
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WORD_LIST *list;
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{
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if (login_shell == 0 /* && interactive */)
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{
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builtin_error ("not login shell: use `exit'");
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return (EXECUTION_FAILURE);
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}
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else
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return (exit_or_logout (list));
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}
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static int
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exit_or_logout (list)
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WORD_LIST *list;
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{
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int exit_value;
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#if defined (JOB_CONTROL)
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int exit_immediate_okay;
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exit_immediate_okay = (interactive == 0 ||
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last_shell_builtin == exit_builtin ||
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last_shell_builtin == logout_builtin ||
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last_shell_builtin == jobs_builtin);
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/* Check for stopped jobs if the user wants to. */
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if (!exit_immediate_okay)
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{
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register int i;
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for (i = 0; i < job_slots; i++)
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if (jobs[i] && STOPPED (i))
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{
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fprintf (stderr, "There are stopped jobs.\n");
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/* This is NOT superfluous because EOF can get here without
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going through the command parser. Set both last and this
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so that either `exit', `logout', or ^D will work to exit
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immediately if nothing intervenes. */
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this_shell_builtin = last_shell_builtin = exit_builtin;
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return (EXECUTION_FAILURE);
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}
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}
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#endif /* JOB_CONTROL */
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/* Get return value if present. This means that you can type
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`logout 5' to a shell, and it returns 5. */
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exit_value = list ? get_numeric_arg (list, 1) : last_command_exit_value;
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/* Run our `~/.bash_logout' file if it exists, and this is a login shell. */
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if (login_shell && sourced_logout++ == 0)
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{
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maybe_execute_file ("~/.bash_logout", 1);
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#ifdef SYS_BASH_LOGOUT
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maybe_execute_file (SYS_BASH_LOGOUT, 1);
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#endif
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}
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last_command_exit_value = exit_value;
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/* Exit the program. */
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jump_to_top_level (EXITPROG);
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/*NOTREACHED*/
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}
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