168 lines
4.3 KiB
Modula-2
168 lines
4.3 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) 1987-2009 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
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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Bash is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with Bash. If not, see <http://www.gnu.org/licenses/>.
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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.
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Exits 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 "../bashintl.h"
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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 check_jobs_at_exit;
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extern int last_command_exit_value;
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extern int running_trap, trap_saved_exit_value;
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extern int subshell_environment;
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extern sh_builtin_func_t *this_shell_builtin;
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extern sh_builtin_func_t *last_shell_builtin;
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static int exit_or_logout __P((WORD_LIST *));
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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 [n]
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Exit a login shell.
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Exits a login shell with exit status N. Returns an error if not executed
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in 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, stopmsg;
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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 == 0)
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{
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register int i;
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for (i = stopmsg = 0; i < js.j_jobslots; i++)
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if (jobs[i] && STOPPED (i))
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stopmsg = JSTOPPED;
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else if (check_jobs_at_exit && stopmsg == 0 && jobs[i] && RUNNING (i))
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stopmsg = JRUNNING;
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if (stopmsg == JSTOPPED)
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fprintf (stderr, _("There are stopped jobs.\n"));
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else if (stopmsg == JRUNNING)
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fprintf (stderr, _("There are running jobs.\n"));
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if (stopmsg && check_jobs_at_exit)
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list_all_jobs (JLIST_STANDARD);
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if (stopmsg)
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{
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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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/* If we're running the exit trap (running_trap == 1, since running_trap
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gets set to SIG+1), and we don't have a argument given to `exit'
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(list == 0), use the exit status we saved before running the trap
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commands (trap_saved_exit_value). */
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exit_value = (running_trap == 1 && list == 0) ? trap_saved_exit_value : get_exitstat (list);
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bash_logout ();
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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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void
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bash_logout ()
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{
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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 && subshell_environment == 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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}
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