/* flags.c -- Everything about flags except the `set' command. That
is in builtins.c */
-/* Copyright (C) 1987,1989 Free Software Foundation, Inc.
+/* Copyright (C) 1987-2021 Free Software Foundation, Inc.
-This file is part of GNU Bash, the Bourne Again SHell.
+ 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 2, or (at your option) any later
-version.
+ 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.
+ 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; see the file COPYING. If not, write to the Free Software
-Foundation, 59 Temple Place, Suite 330, Boston, MA 02111 USA. */
+ You should have received a copy of the GNU General Public License
+ along with Bash. If not, see <http://www.gnu.org/licenses/>.
+*/
-/* Flags hacking. */
#include "config.h"
#if defined (HAVE_UNISTD_H)
# include <unistd.h>
#endif
#include "shell.h"
+#include "execute_cmd.h"
#include "flags.h"
#if defined (BANG_HISTORY)
#endif
#if defined (JOB_CONTROL)
-extern int set_job_control __P((int));
+extern int set_job_control PARAMS((int));
#endif
-#if defined (RESTRICTED_SHELL)
-extern char *shell_name;
-#endif
-
-/* -c, -s invocation options -- not really flags, but they show up in $- */
-extern int want_pending_command, read_from_stdin;
-
/* **************************************************************** */
/* */
-/* The Standard Sh Flags. */
+/* The Standard sh Flags. */
/* */
/* **************************************************************** */
int asynchronous_notification = 0;
/* Non-zero means exit immediately if a command exits with a non-zero
- exit status. */
+ exit status. The first is what controls set -e; the second is what
+ bash uses internally. */
+int errexit_flag = 0;
int exit_immediately_on_error = 0;
/* Non-zero means disable filename globbing. */
/* Non-zero means type out input lines after you read them. */
int echo_input_at_read = 0;
+int verbose_flag = 0;
/* Non-zero means type out the command definition after reading, but
before executing. */
int lexical_scoping = 0;
#endif
-/* Non-zero means no such thing as invisible variables. */
-int no_invisible_vars = 0;
-
/* Non-zero means look up and remember command names in a hash table, */
int hashing_enabled = 1;
#if defined (BANG_HISTORY)
/* Non-zero means that we are doing history expansion. The default.
This means !22 gets the 22nd line of history. */
-int history_expansion = 1;
+int history_expansion = HISTEXPAND_DEFAULT;
+int histexp_flag = 0;
#endif /* BANG_HISTORY */
/* Non-zero means that we allow comments to appear in interactive commands. */
int brace_expansion = 1;
#endif
+/* Non-zero means that shell functions inherit the DEBUG trap. */
+int function_trace_mode = 0;
+
+/* Non-zero means that shell functions inherit the ERR trap. */
+int error_trace_mode = 0;
+
+/* Non-zero means that the rightmost non-zero exit status in a pipeline
+ is the exit status of the entire pipeline. If each processes exits
+ with a 0 status, the status of the pipeline is 0. */
+int pipefail_opt = 0;
+
/* **************************************************************** */
/* */
/* The Flags ALIST. */
/* */
/* **************************************************************** */
-struct flags_alist shell_flags[] = {
+const struct flags_alist shell_flags[] = {
/* Standard sh flags. */
{ 'a', &mark_modified_vars },
#if defined (JOB_CONTROL)
{ 'b', &asynchronous_notification },
#endif /* JOB_CONTROL */
- { 'e', &exit_immediately_on_error },
+ { 'e', &errexit_flag },
{ 'f', &disallow_filename_globbing },
{ 'h', &hashing_enabled },
{ 'i', &forced_interactive },
#endif /* RESTRICTED_SHELL */
{ 't', &just_one_command },
{ 'u', &unbound_vars_is_error },
- { 'v', &echo_input_at_read },
+ { 'v', &verbose_flag },
{ 'x', &echo_command_at_execute },
- { 'C', &noclobber },
/* New flags that control non-standard things. */
#if 0
{ 'l', &lexical_scoping },
#endif
- { 'I', &no_invisible_vars },
-
- { 'P', &no_symbolic_links },
-
#if defined (BRACE_EXPANSION)
{ 'B', &brace_expansion },
#endif
-
+ { 'C', &noclobber },
+ { 'E', &error_trace_mode },
#if defined (BANG_HISTORY)
- { 'H', &history_expansion },
+ { 'H', &histexp_flag },
#endif /* BANG_HISTORY */
-
+ { 'P', &no_symbolic_links },
+ { 'T', &function_trace_mode },
{0, (int *)NULL}
};
return (FLAG_ERROR);
old_value = *value;
-
*value = (on_or_off == FLAG_ON) ? 1 : 0;
/* Special cases for a few flags. */
{
#if defined (BANG_HISTORY)
case 'H':
+ history_expansion = histexp_flag;
if (on_or_off == FLAG_ON)
bash_initialize_history ();
break;
break;
#endif /* JOB_CONTROL */
+ case 'e':
+ if (builtin_ignoring_errexit == 0)
+ exit_immediately_on_error = errexit_flag;
+ break;
+
case 'n':
if (interactive_shell)
read_but_dont_execute = 0;
#if defined (RESTRICTED_SHELL)
case 'r':
- if (on_or_off == FLAG_ON)
+ if (on_or_off == FLAG_ON && shell_initialized)
maybe_make_restricted (shell_name);
break;
#endif
+ case 'v':
+ echo_input_at_read = verbose_flag;
+ break;
}
return (old_value);
return (temp);
}
+char *
+get_current_flags ()
+{
+ char *temp;
+ int i;
+
+ temp = (char *)xmalloc (1 + NUM_SHELL_FLAGS);
+ for (i = 0; shell_flags[i].name; i++)
+ temp[i] = *(shell_flags[i].value);
+ temp[i] = '\0';
+ return (temp);
+}
+
+void
+set_current_flags (bitmap)
+ const char *bitmap;
+{
+ int i;
+
+ if (bitmap == 0)
+ return;
+ for (i = 0; shell_flags[i].name; i++)
+ *(shell_flags[i].value) = bitmap[i];
+}
+
void
reset_shell_flags ()
{
- mark_modified_vars = exit_immediately_on_error = disallow_filename_globbing = 0;
+ mark_modified_vars = disallow_filename_globbing = 0;
place_keywords_in_env = read_but_dont_execute = just_one_command = 0;
- noclobber = unbound_vars_is_error = echo_input_at_read = 0;
+ noclobber = unbound_vars_is_error = 0;
echo_command_at_execute = jobs_m_flag = forced_interactive = 0;
- no_symbolic_links = no_invisible_vars = privileged_mode = 0;
+ no_symbolic_links = 0;
+ privileged_mode = pipefail_opt = 0;
+
+ error_trace_mode = function_trace_mode = 0;
+
+ exit_immediately_on_error = errexit_flag = 0;
+ echo_input_at_read = verbose_flag = 0;
hashing_enabled = interactive_comments = 1;
#endif
#if defined (BANG_HISTORY)
- history_expansion = 1;
+ histexp_flag = 0;
#endif
#if defined (BRACE_EXPANSION)