| This file is exit.def, from which is created exit.c. |
| It implements the builtins "exit", and "logout" in Bash. |
| |
| Copyright (C) 1987-2009 Free Software Foundation, Inc. |
| |
| This file is part of GNU Bash, the Bourne Again SHell. |
| |
| Bash is free software: you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by |
| the Free Software Foundation, either version 3 of the License, or |
| (at your option) any later version. |
| |
| Bash is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| GNU General Public License for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with Bash. If not, see <http://www.gnu.org/licenses/>. |
| |
| $PRODUCES exit.c |
| |
| $BUILTIN exit |
| $FUNCTION exit_builtin |
| $SHORT_DOC exit [n] |
| Exit the shell. |
| |
| Exits the shell with a status of N. If N is omitted, the exit status |
| is that of the last command executed. |
| $END |
| |
| #include <config.h> |
| |
| #include "../bashtypes.h" |
| #include <stdio.h> |
| |
| #if defined (HAVE_UNISTD_H) |
| # include <unistd.h> |
| #endif |
| |
| #include "../bashintl.h" |
| |
| #include "../shell.h" |
| #include "../jobs.h" |
| |
| #include "common.h" |
| #include "builtext.h" /* for jobs_builtin */ |
| |
| extern int check_jobs_at_exit; |
| extern int last_command_exit_value; |
| extern int running_trap, trap_saved_exit_value; |
| extern int subshell_environment; |
| extern sh_builtin_func_t *this_shell_builtin; |
| extern sh_builtin_func_t *last_shell_builtin; |
| |
| static int exit_or_logout __P((WORD_LIST *)); |
| static int sourced_logout; |
| |
| int |
| exit_builtin (list) |
| WORD_LIST *list; |
| { |
| if (interactive) |
| { |
| fprintf (stderr, login_shell ? _("logout\n") : "exit\n"); |
| fflush (stderr); |
| } |
| |
| return (exit_or_logout (list)); |
| } |
| |
| $BUILTIN logout |
| $FUNCTION logout_builtin |
| $SHORT_DOC logout [n] |
| Exit a login shell. |
| |
| Exits a login shell with exit status N. Returns an error if not executed |
| in a login shell. |
| $END |
| |
| /* How to logout. */ |
| int |
| logout_builtin (list) |
| WORD_LIST *list; |
| { |
| if (login_shell == 0 /* && interactive */) |
| { |
| builtin_error (_("not login shell: use `exit'")); |
| return (EXECUTION_FAILURE); |
| } |
| else |
| return (exit_or_logout (list)); |
| } |
| |
| static int |
| exit_or_logout (list) |
| WORD_LIST *list; |
| { |
| int exit_value; |
| |
| #if defined (JOB_CONTROL) |
| int exit_immediate_okay, stopmsg; |
| |
| exit_immediate_okay = (interactive == 0 || |
| last_shell_builtin == exit_builtin || |
| last_shell_builtin == logout_builtin || |
| last_shell_builtin == jobs_builtin); |
| |
| /* Check for stopped jobs if the user wants to. */ |
| if (exit_immediate_okay == 0) |
| { |
| register int i; |
| for (i = stopmsg = 0; i < js.j_jobslots; i++) |
| if (jobs[i] && STOPPED (i)) |
| stopmsg = JSTOPPED; |
| else if (check_jobs_at_exit && stopmsg == 0 && jobs[i] && RUNNING (i)) |
| stopmsg = JRUNNING; |
| |
| if (stopmsg == JSTOPPED) |
| fprintf (stderr, _("There are stopped jobs.\n")); |
| else if (stopmsg == JRUNNING) |
| fprintf (stderr, _("There are running jobs.\n")); |
| |
| if (stopmsg && check_jobs_at_exit) |
| list_all_jobs (JLIST_STANDARD); |
| |
| if (stopmsg) |
| { |
| /* This is NOT superfluous because EOF can get here without |
| going through the command parser. Set both last and this |
| so that either `exit', `logout', or ^D will work to exit |
| immediately if nothing intervenes. */ |
| this_shell_builtin = last_shell_builtin = exit_builtin; |
| return (EXECUTION_FAILURE); |
| } |
| } |
| #endif /* JOB_CONTROL */ |
| |
| /* Get return value if present. This means that you can type |
| `logout 5' to a shell, and it returns 5. */ |
| |
| /* If we're running the exit trap (running_trap == 1, since running_trap |
| gets set to SIG+1), and we don't have a argument given to `exit' |
| (list == 0), use the exit status we saved before running the trap |
| commands (trap_saved_exit_value). */ |
| exit_value = (running_trap == 1 && list == 0) ? trap_saved_exit_value : get_exitstat (list); |
| |
| bash_logout (); |
| |
| last_command_exit_value = exit_value; |
| |
| /* Exit the program. */ |
| jump_to_top_level (EXITPROG); |
| /*NOTREACHED*/ |
| } |
| |
| void |
| bash_logout () |
| { |
| /* Run our `~/.bash_logout' file if it exists, and this is a login shell. */ |
| if (login_shell && sourced_logout++ == 0 && subshell_environment == 0) |
| { |
| maybe_execute_file ("~/.bash_logout", 1); |
| #ifdef SYS_BASH_LOGOUT |
| maybe_execute_file (SYS_BASH_LOGOUT, 1); |
| #endif |
| } |
| } |