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Diffstat (limited to 'builtins/exit.def')
| -rw-r--r-- | builtins/exit.def | 169 |
1 files changed, 169 insertions, 0 deletions
diff --git a/builtins/exit.def b/builtins/exit.def new file mode 100644 index 0000000..9c85bc5 --- /dev/null +++ b/builtins/exit.def @@ -0,0 +1,169 @@ +This file is exit.def, from which is created exit.c. +It implements the builtins "exit", and "logout" in Bash. + +Copyright (C) 1987-2021 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. +$END + +#include <config.h> + +#include "../bashtypes.h" +#include <stdio.h> + +#if defined (HAVE_UNISTD_H) +# include <unistd.h> +#endif + +#include "../bashintl.h" + +#include "../shell.h" +#include "../execute_cmd.h" +#include "../jobs.h" +#include "../trap.h" + +#include "common.h" +#include "builtext.h" /* for jobs_builtin */ + +extern int check_jobs_at_exit; + +static int exit_or_logout PARAMS((WORD_LIST *)); +static int sourced_logout; + +int +exit_builtin (list) + WORD_LIST *list; +{ + CHECK_HELPOPT (list); + + if (interactive) + { + fprintf (stderr, login_shell ? _("logout\n") : "exit\n"); + fflush (stderr); + } + + return (exit_or_logout (list)); +} + +$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; +{ + CHECK_HELPOPT (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 (EXITBLTIN); + /*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 + } +} |