mirror of
https://https.git.savannah.gnu.org/git/bash.git
synced 2026-06-30 17:09:50 +02:00
bash-20130222 remove leftover and stray files
This commit is contained in:
Chet Ramey
-4649
File diff suppressed because it is too large
Load Diff
@@ -1,82 +0,0 @@
|
||||
Starting bash with the `--posix' command-line option or executing
|
||||
`set -o posix' while bash is running will cause bash to conform more
|
||||
closely to the Posix.2 standard by changing the behavior to match that
|
||||
specified by Posix.2 in areas where the bash default differs.
|
||||
|
||||
The following list is what's changed when `posix mode' is in effect:
|
||||
|
||||
1. When a command in the hash table no longer exists, bash will re-search
|
||||
$PATH to find the new location. This is also available with
|
||||
`shopt -s checkhash'.
|
||||
|
||||
2. The >& redirection does not redirect stdout and stderr.
|
||||
|
||||
3. The message printed by the job control code and builtins when a job
|
||||
exits with a non-zero status is `Done(status)'.
|
||||
|
||||
4. Reserved words may not be aliased.
|
||||
|
||||
5. The Posix.2 PS1 and PS2 expansions of `!' -> history number and
|
||||
`!!' -> `!' are enabled, and parameter expansion is performed on
|
||||
the value regardless of the setting of the `promptvars' option.
|
||||
|
||||
6. Interactive comments are enabled by default. (Note that bash has
|
||||
them on by default anyway.)
|
||||
|
||||
7. The Posix.2 startup files are executed ($ENV) rather than the normal
|
||||
bash files.
|
||||
|
||||
8. Tilde expansion is only performed on assignments preceding a command
|
||||
name, rather than on all assignment statements on the line.
|
||||
|
||||
9. The default history file is ~/.sh_history (default value of $HISTFILE).
|
||||
|
||||
10. The output of `kill -l' prints all the signal names on a single line,
|
||||
separated by spaces.
|
||||
|
||||
11. Non-interactive shells exit if `file' in `. file' is not found.
|
||||
|
||||
12. Redirection operators do not perform pathname expansion on the word
|
||||
in the redirection unless the shell is interactive
|
||||
|
||||
13. Function names must be valid shell identifiers. That is, they may not
|
||||
contain characters other than letters, digits, and underscores, and
|
||||
may not start with a digit. Declaring a function with an illegal name
|
||||
causes a fatal syntax error in non-interactive shells.
|
||||
|
||||
14. Posix.2 `special' builtins are found before shell functions during command
|
||||
lookup.
|
||||
|
||||
15. If a Posix.2 special builtin returns an error status, a non-interactive
|
||||
shell exits. The fatal errors are those listed in the POSIX.2 standard,
|
||||
and include things like passing incorrect options, redirection errors,
|
||||
variable assignment errors for assignments preceding the command name,
|
||||
and so on.
|
||||
|
||||
16. The environment passed to executed commands is not sorted. Neither is
|
||||
the output of `set'. This is not strictly Posix.2 behavior, but sh
|
||||
does it this way. Ksh does not. It's not necessary to sort the
|
||||
environment; no program should rely on it being sorted.
|
||||
|
||||
17. If the `cd' builtin finds a directory to change to using $CDPATH, the
|
||||
value it assigns to $PWD does not contain any symbolic links, as if
|
||||
`cd -P' had been executed.
|
||||
|
||||
18. A non-interactive shell exits with an error status if a variable
|
||||
assignment error occurs when no command name follows the assignment
|
||||
statements. A variable assignment error occurs, for example, when
|
||||
trying to assign a value to a read-only variable.
|
||||
|
||||
19. A non-interactive shell exits with an error status if the iteration
|
||||
variable in a for statement or the selection variable in a select
|
||||
statement is a read-only variable.
|
||||
|
||||
20. Process substitution is not available.
|
||||
|
||||
21. Assignment statements preceding POSIX.2 `special' builtins persist in
|
||||
the shell environment after the builtin completes.
|
||||
|
||||
There is other Posix.2 behavior that bash does not implement. Specifically:
|
||||
|
||||
1. Assignment statements affect the execution environment of all builtins,
|
||||
not just special ones.
|
||||
@@ -1,544 +0,0 @@
|
||||
This file is set.def, from which is created set.c.
|
||||
It implements the "set" and "unset" builtins in Bash.
|
||||
|
||||
Copyright (C) 1987, 1989, 1991 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 1, 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; see the file COPYING. If not, write to the Free Software
|
||||
Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
|
||||
|
||||
$PRODUCES set.c
|
||||
|
||||
#include <stdio.h>
|
||||
#include "../shell.h"
|
||||
#include "../flags.h"
|
||||
|
||||
#include "bashgetopt.h"
|
||||
|
||||
extern int interactive;
|
||||
extern int noclobber, posixly_correct;
|
||||
#if defined (READLINE)
|
||||
extern int rl_editing_mode, no_line_editing;
|
||||
#endif /* READLINE */
|
||||
|
||||
$BUILTIN set
|
||||
$FUNCTION set_builtin
|
||||
$SHORT_DOC set [--abefhkmnptuvxldBCHP] [-o option] [arg ...]
|
||||
-a Mark variables which are modified or created for export.
|
||||
-b Notify of job termination immediately.
|
||||
-e Exit immediately if a command exits with a non-zero status.
|
||||
-f Disable file name generation (globbing).
|
||||
-h Locate and remember function commands as functions are
|
||||
defined. Function commands are normally looked up when
|
||||
the function is executed.
|
||||
-i Force the shell to be an "interactive" one. Interactive shells
|
||||
always read `~/.bashrc' on startup.
|
||||
-k All keyword arguments are placed in the environment for a
|
||||
command, not just those that precede the command name.
|
||||
-m Job control is enabled.
|
||||
-n Read commands but do not execute them.
|
||||
-o option-name
|
||||
Set the variable corresponding to option-name:
|
||||
allexport same as -a
|
||||
braceexpand same as -B
|
||||
#if defined (READLINE)
|
||||
emacs use an emacs-style line editing interface
|
||||
#endif /* READLINE */
|
||||
errexit same as -e
|
||||
histexpand same as -H
|
||||
ignoreeof the shell will not exit upon reading EOF
|
||||
interactive-comments
|
||||
allow comments to appear in interactive commands
|
||||
monitor same as -m
|
||||
noclobber disallow redirection to existing files
|
||||
noexec same as -n
|
||||
noglob same as -f
|
||||
nohash same as -d
|
||||
notify save as -b
|
||||
nounset same as -u
|
||||
physical same as -P
|
||||
posix change the behavior of bash where the default
|
||||
operation differs from the 1003.2 standard to
|
||||
match the standard
|
||||
privileged same as -p
|
||||
verbose same as -v
|
||||
#if defined (READLINE)
|
||||
vi use a vi-style line editing interface
|
||||
#endif /* READLINE */
|
||||
xtrace same as -x
|
||||
-p Turned on whenever the real and effective user ids do not match.
|
||||
Disables processing of the $ENV file and importing of shell
|
||||
functions. Turning this option off causes the effective uid and
|
||||
gid to be set to the real uid and gid.
|
||||
-t Exit after reading and executing one command.
|
||||
-u Treat unset variables as an error when substituting.
|
||||
-v Print shell input lines as they are read.
|
||||
-x Print commands and their arguments as they are executed.
|
||||
-l Save and restore the binding of the NAME in a FOR command.
|
||||
-d Disable the hashing of commands that are looked up for execution.
|
||||
Normally, commands are remembered in a hash table, and once
|
||||
found, do not have to be looked up again.
|
||||
#if defined (BRACE_EXPANSION)
|
||||
-B the shell will perform brace expansion
|
||||
#endif /* BRACE_EXPANSION */
|
||||
#if defined (BANG_HISTORY)
|
||||
-H Enable ! style history substitution. This flag is on
|
||||
by default.
|
||||
#endif /* BANG_HISTORY */
|
||||
-C If set, disallow existing regular files to be overwritten
|
||||
by redirection of output.
|
||||
-P If set, do not follow symbolic links when executing commands
|
||||
such as cd which change the current directory.
|
||||
|
||||
Using + rather than - causes these flags to be turned off. The
|
||||
flags can also be used upon invocation of the shell. The current
|
||||
set of flags may be found in $-. The remaining n ARGs are positional
|
||||
parameters and are assigned, in order, to $1, $2, .. $n. If no
|
||||
ARGs are given, all shell variables are printed.
|
||||
$END
|
||||
|
||||
/* An a-list used to match long options for set -o to the corresponding
|
||||
option letter. */
|
||||
struct {
|
||||
char *name;
|
||||
int letter;
|
||||
} o_options[] = {
|
||||
{ "allexport", 'a' },
|
||||
#if defined (BRACE_EXPANSION)
|
||||
{ "braceexpand",'B' },
|
||||
#endif
|
||||
{ "errexit", 'e' },
|
||||
{ "histexpand", 'H' },
|
||||
{ "monitor", 'm' },
|
||||
{ "noexec", 'n' },
|
||||
{ "noglob", 'f' },
|
||||
{ "nohash", 'd' },
|
||||
#if defined (JOB_CONTROL)
|
||||
{ "notify", 'b' },
|
||||
#endif /* JOB_CONTROL */
|
||||
{"nounset", 'u' },
|
||||
{"physical", 'P' },
|
||||
{"privileged", 'p' },
|
||||
{"verbose", 'v' },
|
||||
{"xtrace", 'x' },
|
||||
{(char *)NULL, 0},
|
||||
};
|
||||
|
||||
#define MINUS_O_FORMAT "%-15s\t%s\n"
|
||||
|
||||
void
|
||||
list_minus_o_opts ()
|
||||
{
|
||||
register int i;
|
||||
char *on = "on", *off = "off";
|
||||
|
||||
printf (MINUS_O_FORMAT, "noclobber", (noclobber == 1) ? on : off);
|
||||
|
||||
if (find_variable ("ignoreeof") || find_variable ("IGNOREEOF"))
|
||||
printf (MINUS_O_FORMAT, "ignoreeof", on);
|
||||
else
|
||||
printf (MINUS_O_FORMAT, "ignoreeof", off);
|
||||
|
||||
printf (MINUS_O_FORMAT, "interactive-comments",
|
||||
interactive_comments ? on : off);
|
||||
|
||||
printf (MINUS_O_FORMAT, "posix", posixly_correct ? on : off);
|
||||
|
||||
#if defined (READLINE)
|
||||
if (no_line_editing)
|
||||
{
|
||||
printf (MINUS_O_FORMAT, "emacs", off);
|
||||
printf (MINUS_O_FORMAT, "vi", off);
|
||||
}
|
||||
else
|
||||
{
|
||||
/* Magic. This code `knows' how readline handles rl_editing_mode. */
|
||||
printf (MINUS_O_FORMAT, "emacs", (rl_editing_mode == 1) ? on : off);
|
||||
printf (MINUS_O_FORMAT, "vi", (rl_editing_mode == 0) ? on : off);
|
||||
}
|
||||
#endif /* READLINE */
|
||||
|
||||
for (i = 0; o_options[i].name; i++)
|
||||
{
|
||||
int *on_or_off, zero = 0;
|
||||
|
||||
on_or_off = find_flag (o_options[i].letter);
|
||||
if (on_or_off == FLAG_UNKNOWN)
|
||||
on_or_off = &zero;
|
||||
printf (MINUS_O_FORMAT, o_options[i].name, (*on_or_off == 1) ? on : off);
|
||||
}
|
||||
}
|
||||
|
||||
set_minus_o_option (on_or_off, option_name)
|
||||
int on_or_off;
|
||||
char *option_name;
|
||||
{
|
||||
int option_char = -1;
|
||||
|
||||
if (STREQ (option_name, "noclobber"))
|
||||
{
|
||||
if (on_or_off == FLAG_ON)
|
||||
bind_variable ("noclobber", "");
|
||||
else
|
||||
unbind_variable ("noclobber");
|
||||
stupidly_hack_special_variables ("noclobber");
|
||||
}
|
||||
else if (STREQ (option_name, "ignoreeof"))
|
||||
{
|
||||
unbind_variable ("ignoreeof");
|
||||
unbind_variable ("IGNOREEOF");
|
||||
if (on_or_off == FLAG_ON)
|
||||
bind_variable ("IGNOREEOF", "10");
|
||||
stupidly_hack_special_variables ("IGNOREEOF");
|
||||
}
|
||||
|
||||
#if defined (READLINE)
|
||||
else if ((STREQ (option_name, "emacs")) || (STREQ (option_name, "vi")))
|
||||
{
|
||||
if (on_or_off == FLAG_ON)
|
||||
{
|
||||
rl_variable_bind ("editing-mode", option_name);
|
||||
|
||||
if (interactive)
|
||||
with_input_from_stdin ();
|
||||
no_line_editing = 0;
|
||||
}
|
||||
else
|
||||
{
|
||||
int isemacs = (rl_editing_mode == 1);
|
||||
if ((isemacs && STREQ (option_name, "emacs")) ||
|
||||
(!isemacs && STREQ (option_name, "vi")))
|
||||
{
|
||||
if (interactive)
|
||||
with_input_from_stream (stdin, "stdin");
|
||||
no_line_editing = 1;
|
||||
}
|
||||
else
|
||||
builtin_error ("not in %s editing mode", option_name);
|
||||
}
|
||||
}
|
||||
#endif /* READLINE */
|
||||
else if (STREQ (option_name, "interactive-comments"))
|
||||
interactive_comments = (on_or_off == FLAG_ON);
|
||||
else if (STREQ (option_name, "posix"))
|
||||
{
|
||||
posixly_correct = (on_or_off == FLAG_ON);
|
||||
unbind_variable ("POSIXLY_CORRECT");
|
||||
unbind_variable ("POSIX_PEDANTIC");
|
||||
if (on_or_off == FLAG_ON)
|
||||
{
|
||||
bind_variable ("POSIXLY_CORRECT", "");
|
||||
stupidly_hack_special_variables ("POSIXLY_CORRECT");
|
||||
}
|
||||
}
|
||||
else
|
||||
{
|
||||
register int i;
|
||||
for (i = 0; o_options[i].name; i++)
|
||||
{
|
||||
if (STREQ (option_name, o_options[i].name))
|
||||
{
|
||||
option_char = o_options[i].letter;
|
||||
break;
|
||||
}
|
||||
}
|
||||
if (option_char == -1)
|
||||
{
|
||||
builtin_error ("%s: unknown option name", option_name);
|
||||
return (EXECUTION_FAILURE);
|
||||
}
|
||||
if (change_flag (option_char, on_or_off) == FLAG_ERROR)
|
||||
{
|
||||
bad_option (option_name);
|
||||
return (EXECUTION_FAILURE);
|
||||
}
|
||||
}
|
||||
return (EXECUTION_SUCCESS);
|
||||
}
|
||||
|
||||
/* Set some flags from the word values in the input list. If LIST is empty,
|
||||
then print out the values of the variables instead. If LIST contains
|
||||
non-flags, then set $1 - $9 to the successive words of LIST. */
|
||||
set_builtin (list)
|
||||
WORD_LIST *list;
|
||||
{
|
||||
int on_or_off, flag_name, force_assignment = 0;
|
||||
|
||||
if (!list)
|
||||
{
|
||||
SHELL_VAR **vars;
|
||||
|
||||
vars = all_shell_variables ();
|
||||
if (vars)
|
||||
{
|
||||
print_var_list (vars);
|
||||
free (vars);
|
||||
}
|
||||
|
||||
vars = all_shell_functions ();
|
||||
if (vars)
|
||||
{
|
||||
print_var_list (vars);
|
||||
free (vars);
|
||||
}
|
||||
|
||||
return (EXECUTION_SUCCESS);
|
||||
}
|
||||
|
||||
/* Check validity of flag arguments. */
|
||||
if (*list->word->word == '-' || *list->word->word == '+')
|
||||
{
|
||||
register char *arg;
|
||||
WORD_LIST *save_list = list;
|
||||
|
||||
while (list && (arg = list->word->word))
|
||||
{
|
||||
char c;
|
||||
|
||||
if (arg[0] != '-' && arg[0] != '+')
|
||||
break;
|
||||
|
||||
/* `-' or `--' signifies end of flag arguments. */
|
||||
if (arg[0] == '-' &&
|
||||
(!arg[1] || (arg[1] == '-' && !arg[2])))
|
||||
break;
|
||||
|
||||
while (c = *++arg)
|
||||
{
|
||||
if (find_flag (c) == FLAG_UNKNOWN && c != 'o')
|
||||
{
|
||||
char s[2];
|
||||
s[0] = c; s[1] = '\0';
|
||||
bad_option (s);
|
||||
if (c == '?')
|
||||
builtin_usage ();
|
||||
return (c == '?' ? EXECUTION_SUCCESS : EXECUTION_FAILURE);
|
||||
}
|
||||
}
|
||||
list = list->next;
|
||||
}
|
||||
list = save_list;
|
||||
}
|
||||
|
||||
/* Do the set command. While the list consists of words starting with
|
||||
'-' or '+' treat them as flags, otherwise, start assigning them to
|
||||
$1 ... $n. */
|
||||
while (list)
|
||||
{
|
||||
char *string = list->word->word;
|
||||
|
||||
/* If the argument is `--' or `-' then signal the end of the list
|
||||
and remember the remaining arguments. */
|
||||
if (string[0] == '-' && (!string[1] || (string[1] == '-' && !string[2])))
|
||||
{
|
||||
list = list->next;
|
||||
|
||||
/* `set --' unsets the positional parameters. */
|
||||
if (string[1] == '-')
|
||||
force_assignment = 1;
|
||||
|
||||
/* Until told differently, the old shell behaviour of
|
||||
`set - [arg ...]' being equivalent to `set +xv [arg ...]'
|
||||
stands. Posix.2 says the behaviour is marked as obsolescent. */
|
||||
else
|
||||
{
|
||||
change_flag ('x', '+');
|
||||
change_flag ('v', '+');
|
||||
}
|
||||
|
||||
break;
|
||||
}
|
||||
|
||||
if ((on_or_off = *string) &&
|
||||
(on_or_off == '-' || on_or_off == '+'))
|
||||
{
|
||||
int i = 1;
|
||||
while (flag_name = string[i++])
|
||||
{
|
||||
if (flag_name == '?')
|
||||
{
|
||||
builtin_usage ();
|
||||
return (EXECUTION_SUCCESS);
|
||||
}
|
||||
else if (flag_name == 'o') /* -+o option-name */
|
||||
{
|
||||
char *option_name;
|
||||
WORD_LIST *opt;
|
||||
|
||||
opt = list->next;
|
||||
|
||||
if (!opt)
|
||||
{
|
||||
list_minus_o_opts ();
|
||||
continue;
|
||||
}
|
||||
|
||||
option_name = opt->word->word;
|
||||
|
||||
if (!option_name || !*option_name || (*option_name == '-'))
|
||||
{
|
||||
list_minus_o_opts ();
|
||||
continue;
|
||||
}
|
||||
list = list->next; /* Skip over option name. */
|
||||
|
||||
if (set_minus_o_option (on_or_off, option_name) != EXECUTION_SUCCESS)
|
||||
return (EXECUTION_FAILURE);
|
||||
}
|
||||
else
|
||||
{
|
||||
if (change_flag (flag_name, on_or_off) == FLAG_ERROR)
|
||||
{
|
||||
char opt[3];
|
||||
opt[0] = on_or_off;
|
||||
opt[1] = flag_name;
|
||||
opt[2] = '\0';
|
||||
bad_option (opt);
|
||||
builtin_usage ();
|
||||
return (EXECUTION_FAILURE);
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
else
|
||||
{
|
||||
break;
|
||||
}
|
||||
list = list->next;
|
||||
}
|
||||
|
||||
/* Assigning $1 ... $n */
|
||||
if (list || force_assignment)
|
||||
remember_args (list, 1);
|
||||
return (EXECUTION_SUCCESS);
|
||||
}
|
||||
|
||||
$BUILTIN unset
|
||||
$FUNCTION unset_builtin
|
||||
$SHORT_DOC unset [-f] [-v] [name ...]
|
||||
For each NAME, remove the corresponding variable or function. Given
|
||||
the `-v', unset will only act on variables. Given the `-f' flag,
|
||||
unset will only act on functions. With neither flag, unset first
|
||||
tries to unset a variable, and if that fails, then tries to unset a
|
||||
function. Some variables (such as PATH and IFS) cannot be unset; also
|
||||
see readonly.
|
||||
$END
|
||||
|
||||
#define NEXT_VARIABLE() any_failed++; list = list->next; continue;
|
||||
|
||||
unset_builtin (list)
|
||||
WORD_LIST *list;
|
||||
{
|
||||
int unset_function, unset_variable, unset_array, opt, any_failed;
|
||||
char *name;
|
||||
|
||||
unset_function = unset_variable = unset_array = any_failed = 0;
|
||||
|
||||
reset_internal_getopt ();
|
||||
while ((opt = internal_getopt (list, "fv")) != -1)
|
||||
{
|
||||
switch (opt)
|
||||
{
|
||||
case 'f':
|
||||
unset_function = 1;
|
||||
break;
|
||||
case 'v':
|
||||
unset_variable = 1;
|
||||
break;
|
||||
default:
|
||||
builtin_usage ();
|
||||
return (EXECUTION_FAILURE);
|
||||
}
|
||||
}
|
||||
|
||||
list = loptend;
|
||||
|
||||
if (unset_function && unset_variable)
|
||||
{
|
||||
builtin_error ("cannot simultaneously unset a function and a variable");
|
||||
return (EXECUTION_FAILURE);
|
||||
}
|
||||
|
||||
while (list)
|
||||
{
|
||||
SHELL_VAR *var;
|
||||
int tem;
|
||||
#if defined (ARRAY_VARS)
|
||||
char *t;
|
||||
#endif
|
||||
|
||||
name = list->word->word;
|
||||
|
||||
#if defined (ARRAY_VARS)
|
||||
if (!unset_function && valid_array_reference (name))
|
||||
{
|
||||
t = strchr (name, '[');
|
||||
*t++ = '\0';
|
||||
unset_array++;
|
||||
}
|
||||
#endif
|
||||
|
||||
var = unset_function ? find_function (name) : find_variable (name);
|
||||
|
||||
if (var && !unset_function && non_unsettable_p (var))
|
||||
{
|
||||
builtin_error ("%s: cannot unset", name);
|
||||
NEXT_VARIABLE ();
|
||||
}
|
||||
|
||||
/* Posix.2 says that unsetting readonly variables is an error. */
|
||||
if (var && readonly_p (var))
|
||||
{
|
||||
builtin_error ("%s: cannot unset: readonly %s",
|
||||
name, unset_function ? "function" : "variable");
|
||||
NEXT_VARIABLE ();
|
||||
}
|
||||
|
||||
/* Unless the -f option is supplied, the name refers to a variable. */
|
||||
#if defined (ARRAY_VARS)
|
||||
if (var && unset_array)
|
||||
{
|
||||
if (array_p (var) == 0)
|
||||
{
|
||||
builtin_error ("%s: not an array variable", name);
|
||||
NEXT_VARIABLE ();
|
||||
}
|
||||
else
|
||||
tem = unbind_array_element (var, t);
|
||||
}
|
||||
else
|
||||
#endif /* ARRAY_VARS */
|
||||
tem = makunbound (name, unset_function ? shell_functions : shell_variables);
|
||||
|
||||
/* This is what Posix.2 draft 11+ says. ``If neither -f nor -v
|
||||
is specified, the name refers to a variable; if a variable by
|
||||
that name does not exist, a function by that name, if any,
|
||||
shall be unset.'' */
|
||||
if ((tem == -1) && !unset_function && !unset_variable)
|
||||
tem = makunbound (name, shell_functions);
|
||||
|
||||
if (tem == -1)
|
||||
any_failed++;
|
||||
else if (!unset_function)
|
||||
stupidly_hack_special_variables (name);
|
||||
|
||||
list = list->next;
|
||||
}
|
||||
|
||||
if (any_failed)
|
||||
return (EXECUTION_FAILURE);
|
||||
else
|
||||
return (EXECUTION_SUCCESS);
|
||||
}
|
||||
@@ -1,50 +0,0 @@
|
||||
/* unwind_prot.h - Macros and functions for hacking unwind protection. */
|
||||
|
||||
/* Copyright (C) 1993 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 2, 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; see the file COPYING. If not, write to the Free Software
|
||||
Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
|
||||
|
||||
#if !defined (_UNWIND_PROT_H)
|
||||
#define _UNWIND_PROT_H
|
||||
|
||||
/* Run a function without interrupts. */
|
||||
extern void begin_unwind_frame ();
|
||||
extern void discard_unwind_frame ();
|
||||
extern void run_unwind_frame ();
|
||||
extern void add_unwind_protect ();
|
||||
extern void remove_unwind_protect ();
|
||||
extern void run_unwind_protects ();
|
||||
extern void unwind_protect_var ();
|
||||
|
||||
/* Define for people who like their code to look a certain way. */
|
||||
#define end_unwind_frame()
|
||||
|
||||
/* How to protect an integer. */
|
||||
#define unwind_protect_int(X) unwind_protect_var (&(X), (char *)(X), sizeof (int))
|
||||
|
||||
/* How to protect a pointer to a string. */
|
||||
#define unwind_protect_string(X) \
|
||||
unwind_protect_var ((int *)&(X), (X), sizeof (char *))
|
||||
|
||||
/* How to protect any old pointer. */
|
||||
#define unwind_protect_pointer(X) unwind_protect_string (X)
|
||||
|
||||
/* How to protect the contents of a jmp_buf. */
|
||||
#define unwind_protect_jmp_buf(X) \
|
||||
unwind_protect_var ((int *)(X), (char *)(X), sizeof (procenv_t))
|
||||
|
||||
#endif /* _UNWIND_PROT_H */
|
||||
-1084
File diff suppressed because it is too large
Load Diff
@@ -1,42 +0,0 @@
|
||||
# This file is a shell script that caches the results of configure
|
||||
# tests for CYGWIN32 so they don't need to be done when cross-compiling.
|
||||
|
||||
# AC_FUNC_GETPGRP should also define GETPGRP_VOID
|
||||
ac_cv_func_getpgrp_void=${ac_cv_func_getpgrp_void='yes'}
|
||||
# AC_FUNC_SETVBUF_REVERSED should not define anything else
|
||||
ac_cv_func_setvbuf_reversed=${ac_cv_func_setvbuf_reversed='no'}
|
||||
# on CYGWIN32, system calls do not restart
|
||||
ac_cv_sys_restartable_syscalls=${ac_cv_sys_restartable_syscalls='no'}
|
||||
bash_cv_sys_restartable_syscalls=${bash_cv_sys_restartable_syscalls='no'}
|
||||
|
||||
# these may be necessary, but they are currently commented out
|
||||
#ac_cv_c_bigendian=${ac_cv_c_bigendian='no'}
|
||||
ac_cv_sizeof_char_p=${ac_cv_sizeof_char_p='4'}
|
||||
ac_cv_sizeof_int=${ac_cv_sizeof_int='4'}
|
||||
ac_cv_sizeof_long=${ac_cv_sizeof_long='4'}
|
||||
ac_cv_sizeof_double=${ac_cv_sizeof_double='8'}
|
||||
|
||||
bash_cv_dup2_broken=${bash_cv_dup2_broken='no'}
|
||||
bash_cv_pgrp_pipe=${bash_cv_pgrp_pipe='no'}
|
||||
bash_cv_type_rlimit=${bash_cv_type_rlimit='long'}
|
||||
bash_cv_decl_under_sys_siglist=${bash_cv_decl_under_sys_siglist='no'}
|
||||
bash_cv_under_sys_siglist=${bash_cv_under_sys_siglist='no'}
|
||||
bash_cv_sys_siglist=${bash_cv_sys_siglist='no'}
|
||||
bash_cv_opendir_not_robust=${bash_cv_opendir_not_robust='no'}
|
||||
bash_cv_getenv_redef=${bash_cv_getenv_redef='yes'}
|
||||
bash_cv_printf_declared=${bash_cv_printf_declared='yes'}
|
||||
bash_cv_ulimit_maxfds=${bash_cv_ulimit_maxfds='no'}
|
||||
bash_cv_getcwd_calls_popen=${bash_cv_getcwd_calls_popen='no'}
|
||||
bash_cv_must_reinstall_sighandlers=${bash_cv_must_reinstall_sighandlers='no'}
|
||||
bash_cv_job_control_missing=${bash_cv_job_control_missing='present'}
|
||||
bash_cv_sys_named_pipes=${bash_cv_sys_named_pipes='missing'}
|
||||
bash_cv_func_sigsetjmp=${bash_cv_func_sigsetjmp='missing'}
|
||||
bash_cv_mail_dir=${bash_cv_mail_dir='unknown'}
|
||||
bash_cv_func_strcoll_broken=${bash_cv_func_strcoll_broken='no'}
|
||||
|
||||
bash_cv_type_int32_t=${bash_cv_type_int32_t='int'}
|
||||
bash_cv_type_u_int32_t=${bash_cv_type_u_int32_t='int'}
|
||||
|
||||
ac_cv_type_bits64_t=${ac_cv_type_bits64_t='no'}
|
||||
|
||||
# end of cross-build/cygwin32.cache
|
||||
-1745
File diff suppressed because it is too large
Load Diff
@@ -1,292 +0,0 @@
|
||||
/* eval.c -- reading and evaluating commands. */
|
||||
|
||||
/* Copyright (C) 1996-2011 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/>.
|
||||
*/
|
||||
|
||||
#include "config.h"
|
||||
|
||||
#if defined (HAVE_UNISTD_H)
|
||||
# ifdef _MINIX
|
||||
# include <sys/types.h>
|
||||
# endif
|
||||
# include <unistd.h>
|
||||
#endif
|
||||
|
||||
#include "bashansi.h"
|
||||
#include <stdio.h>
|
||||
|
||||
#include "bashintl.h"
|
||||
|
||||
|
||||
#include "shell.h"
|
||||
#include "flags.h"
|
||||
#include "trap.h"
|
||||
|
||||
#include "builtins/common.h"
|
||||
|
||||
#include "input.h"
|
||||
#include "execute_cmd.h"
|
||||
|
||||
#if defined (HISTORY)
|
||||
# include "bashhist.h"
|
||||
#endif
|
||||
|
||||
extern int EOF_reached;
|
||||
extern int indirection_level;
|
||||
extern int posixly_correct;
|
||||
extern int subshell_environment, running_under_emacs;
|
||||
extern int last_command_exit_value, stdin_redir;
|
||||
extern int need_here_doc;
|
||||
extern int current_command_number, current_command_line_count, line_number;
|
||||
extern int expand_aliases;
|
||||
|
||||
#if defined (HAVE_POSIX_SIGNALS)
|
||||
extern sigset_t top_level_mask;
|
||||
#endif
|
||||
|
||||
static void send_pwd_to_eterm __P((void));
|
||||
static sighandler alrm_catcher __P((int));
|
||||
|
||||
/* Read and execute commands until EOF is reached. This assumes that
|
||||
the input source has already been initialized. */
|
||||
int
|
||||
reader_loop ()
|
||||
{
|
||||
int our_indirection_level;
|
||||
COMMAND * volatile current_command;
|
||||
|
||||
USE_VAR(current_command);
|
||||
|
||||
current_command = (COMMAND *)NULL;
|
||||
|
||||
our_indirection_level = ++indirection_level;
|
||||
|
||||
while (EOF_Reached == 0)
|
||||
{
|
||||
int code;
|
||||
|
||||
code = setjmp_nosigs (top_level);
|
||||
|
||||
#if defined (PROCESS_SUBSTITUTION)
|
||||
unlink_fifo_list ();
|
||||
#endif /* PROCESS_SUBSTITUTION */
|
||||
|
||||
/* XXX - why do we set this every time through the loop? */
|
||||
if (interactive_shell && signal_is_ignored (SIGINT) == 0)
|
||||
set_signal_handler (SIGINT, sigint_sighandler);
|
||||
|
||||
if (code != NOT_JUMPED)
|
||||
{
|
||||
indirection_level = our_indirection_level;
|
||||
|
||||
switch (code)
|
||||
{
|
||||
/* Some kind of throw to top_level has occured. */
|
||||
case FORCE_EOF:
|
||||
case ERREXIT:
|
||||
case EXITPROG:
|
||||
current_command = (COMMAND *)NULL;
|
||||
if (exit_immediately_on_error)
|
||||
variable_context = 0; /* not in a function */
|
||||
EOF_Reached = EOF;
|
||||
goto exec_done;
|
||||
|
||||
case DISCARD:
|
||||
/* Make sure the exit status is reset to a non-zero value, but
|
||||
leave existing non-zero values (e.g., > 128 on signal)
|
||||
alone. */
|
||||
if (last_command_exit_value == 0)
|
||||
last_command_exit_value = EXECUTION_FAILURE;
|
||||
if (subshell_environment)
|
||||
{
|
||||
current_command = (COMMAND *)NULL;
|
||||
EOF_Reached = EOF;
|
||||
goto exec_done;
|
||||
}
|
||||
/* Obstack free command elements, etc. */
|
||||
if (current_command)
|
||||
{
|
||||
dispose_command (current_command);
|
||||
current_command = (COMMAND *)NULL;
|
||||
}
|
||||
#if defined (HAVE_POSIX_SIGNALS)
|
||||
sigprocmask (SIG_SETMASK, &top_level_mask, (sigset_t *)NULL);
|
||||
#endif
|
||||
break;
|
||||
|
||||
default:
|
||||
command_error ("reader_loop", CMDERR_BADJUMP, code, 0);
|
||||
}
|
||||
}
|
||||
|
||||
executing = 0;
|
||||
if (temporary_env)
|
||||
dispose_used_env_vars ();
|
||||
|
||||
#if (defined (ultrix) && defined (mips)) || defined (C_ALLOCA)
|
||||
/* Attempt to reclaim memory allocated with alloca (). */
|
||||
(void) alloca (0);
|
||||
#endif
|
||||
|
||||
if (read_command () == 0)
|
||||
{
|
||||
if (interactive_shell == 0 && read_but_dont_execute)
|
||||
{
|
||||
last_command_exit_value = EXECUTION_SUCCESS;
|
||||
dispose_command (global_command);
|
||||
global_command = (COMMAND *)NULL;
|
||||
}
|
||||
else if (current_command = global_command)
|
||||
{
|
||||
global_command = (COMMAND *)NULL;
|
||||
current_command_number++;
|
||||
|
||||
executing = 1;
|
||||
stdin_redir = 0;
|
||||
execute_command (current_command);
|
||||
|
||||
exec_done:
|
||||
QUIT;
|
||||
|
||||
if (current_command)
|
||||
{
|
||||
dispose_command (current_command);
|
||||
current_command = (COMMAND *)NULL;
|
||||
}
|
||||
}
|
||||
}
|
||||
else
|
||||
{
|
||||
/* Parse error, maybe discard rest of stream if not interactive. */
|
||||
if (interactive == 0)
|
||||
EOF_Reached = EOF;
|
||||
}
|
||||
if (just_one_command)
|
||||
EOF_Reached = EOF;
|
||||
}
|
||||
indirection_level--;
|
||||
return (last_command_exit_value);
|
||||
}
|
||||
|
||||
static sighandler
|
||||
alrm_catcher(i)
|
||||
int i;
|
||||
{
|
||||
printf (_("\007timed out waiting for input: auto-logout\n"));
|
||||
fflush (stdout);
|
||||
bash_logout (); /* run ~/.bash_logout if this is a login shell */
|
||||
jump_to_top_level (EXITPROG);
|
||||
SIGRETURN (0);
|
||||
}
|
||||
|
||||
/* Send an escape sequence to emacs term mode to tell it the
|
||||
current working directory. */
|
||||
static void
|
||||
send_pwd_to_eterm ()
|
||||
{
|
||||
char *pwd, *f;
|
||||
|
||||
f = 0;
|
||||
pwd = get_string_value ("PWD");
|
||||
if (pwd == 0)
|
||||
f = pwd = get_working_directory ("eterm");
|
||||
fprintf (stderr, "\032/%s\n", pwd);
|
||||
free (f);
|
||||
}
|
||||
|
||||
/* Call the YACC-generated parser and return the status of the parse.
|
||||
Input is read from the current input stream (bash_input). yyparse
|
||||
leaves the parsed command in the global variable GLOBAL_COMMAND.
|
||||
This is where PROMPT_COMMAND is executed. */
|
||||
int
|
||||
parse_command ()
|
||||
{
|
||||
int r;
|
||||
char *command_to_execute;
|
||||
|
||||
need_here_doc = 0;
|
||||
run_pending_traps ();
|
||||
|
||||
/* Allow the execution of a random command just before the printing
|
||||
of each primary prompt. If the shell variable PROMPT_COMMAND
|
||||
is set then the value of it is the command to execute. */
|
||||
if (interactive && bash_input.type != st_string)
|
||||
{
|
||||
command_to_execute = get_string_value ("PROMPT_COMMAND");
|
||||
if (command_to_execute)
|
||||
execute_variable_command (command_to_execute, "PROMPT_COMMAND");
|
||||
|
||||
if (running_under_emacs == 2)
|
||||
send_pwd_to_eterm (); /* Yuck */
|
||||
}
|
||||
|
||||
current_command_line_count = 0;
|
||||
r = yyparse ();
|
||||
|
||||
if (need_here_doc)
|
||||
gather_here_documents ();
|
||||
|
||||
return (r);
|
||||
}
|
||||
|
||||
/* Read and parse a command, returning the status of the parse. The command
|
||||
is left in the globval variable GLOBAL_COMMAND for use by reader_loop.
|
||||
This is where the shell timeout code is executed. */
|
||||
int
|
||||
read_command ()
|
||||
{
|
||||
SHELL_VAR *tmout_var;
|
||||
int tmout_len, result;
|
||||
SigHandler *old_alrm;
|
||||
|
||||
set_current_prompt_level (1);
|
||||
global_command = (COMMAND *)NULL;
|
||||
|
||||
/* Only do timeouts if interactive. */
|
||||
tmout_var = (SHELL_VAR *)NULL;
|
||||
tmout_len = 0;
|
||||
old_alrm = (SigHandler *)NULL;
|
||||
|
||||
if (interactive)
|
||||
{
|
||||
tmout_var = find_variable ("TMOUT");
|
||||
|
||||
if (tmout_var && var_isset (tmout_var))
|
||||
{
|
||||
tmout_len = atoi (value_cell (tmout_var));
|
||||
if (tmout_len > 0)
|
||||
{
|
||||
old_alrm = set_signal_handler (SIGALRM, alrm_catcher);
|
||||
alarm (tmout_len);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
QUIT;
|
||||
|
||||
current_command_line_count = 0;
|
||||
result = parse_command ();
|
||||
|
||||
if (interactive && tmout_var && (tmout_len > 0))
|
||||
{
|
||||
alarm(0);
|
||||
set_signal_handler (SIGALRM, old_alrm);
|
||||
}
|
||||
|
||||
return (result);
|
||||
}
|
||||
@@ -1,238 +0,0 @@
|
||||
#
|
||||
# Simple makefile for the sample loadable builtins
|
||||
#
|
||||
# Copyright (C) 1996 Free Software Foundation, Inc.
|
||||
|
||||
# This program 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.
|
||||
|
||||
# This program 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 this program; if not, write to the Free Software
|
||||
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111 USA.
|
||||
|
||||
# Include some boilerplate Gnu makefile definitions.
|
||||
prefix = @prefix@
|
||||
|
||||
exec_prefix = @exec_prefix@
|
||||
bindir = @bindir@
|
||||
libdir = @libdir@
|
||||
infodir = @infodir@
|
||||
includedir = @includedir@
|
||||
|
||||
topdir = @top_srcdir@
|
||||
BUILD_DIR = @BUILD_DIR@
|
||||
srcdir = @srcdir@
|
||||
VPATH = .:@srcdir@
|
||||
|
||||
@SET_MAKE@
|
||||
CC = @CC@
|
||||
RM = rm -f
|
||||
|
||||
SHELL = @MAKE_SHELL@
|
||||
|
||||
host_os = @host_os@
|
||||
host_cpu = @host_cpu@
|
||||
host_vendor = @host_vendor@
|
||||
|
||||
CFLAGS = @CFLAGS@
|
||||
LOCAL_CFLAGS = @LOCAL_CFLAGS@
|
||||
DEFS = @DEFS@
|
||||
LOCAL_DEFS = @LOCAL_DEFS@
|
||||
|
||||
CPPFLAGS = @CPPFLAGS@
|
||||
|
||||
BASHINCDIR = ${topdir}/include
|
||||
|
||||
LIBBUILD = ${BUILD_DIR}/lib
|
||||
|
||||
INTL_LIBSRC = ${topdir}/lib/intl
|
||||
INTL_BUILDDIR = ${LIBBUILD}/intl
|
||||
INTL_INC = @INTL_INC@
|
||||
LIBINTL_H = @LIBINTL_H@
|
||||
|
||||
CCFLAGS = $(DEFS) $(LOCAL_DEFS) $(LOCAL_CFLAGS) $(CFLAGS)
|
||||
|
||||
#
|
||||
# These values are generated for configure by ${topdir}/support/shobj-conf.
|
||||
# If your system is not supported by that script, but includes facilities for
|
||||
# dynamic loading of shared objects, please update the script and send the
|
||||
# changes to bash-maintainers@gnu.org.
|
||||
#
|
||||
SHOBJ_CC = @SHOBJ_CC@
|
||||
SHOBJ_CFLAGS = @SHOBJ_CFLAGS@
|
||||
SHOBJ_LD = @SHOBJ_LD@
|
||||
SHOBJ_LDFLAGS = @SHOBJ_LDFLAGS@
|
||||
SHOBJ_XLDFLAGS = @SHOBJ_XLDFLAGS@
|
||||
SHOBJ_LIBS = @SHOBJ_LIBS@
|
||||
SHOBJ_STATUS = @SHOBJ_STATUS@
|
||||
|
||||
INC = -I. -I.. -I$(topdir) -I$(topdir)/lib -I$(topdir)/builtins \
|
||||
-I$(BASHINCDIR) -I$(BUILD_DIR) -I$(LIBBUILD) \
|
||||
-I$(BUILD_DIR)/builtins $(INTL_INC)
|
||||
|
||||
.c.o:
|
||||
$(SHOBJ_CC) $(SHOBJ_CFLAGS) $(CCFLAGS) $(INC) -c -o $@ $<
|
||||
|
||||
|
||||
ALLPROG = print truefalse sleep pushd finfo logname basename dirname \
|
||||
tty pathchk tee head mkdir rmdir printenv id whoami \
|
||||
uname sync push ln unlink cut realpath getconf strftime
|
||||
OTHERPROG = necho hello cat
|
||||
|
||||
all: $(SHOBJ_STATUS)
|
||||
|
||||
supported: $(ALLPROG)
|
||||
others: $(OTHERPROG)
|
||||
|
||||
unsupported:
|
||||
@echo "Your system (${host_os}) is not supported by the"
|
||||
@echo "${topdir}/support/shobj-conf script."
|
||||
@echo "If your operating system provides facilities for dynamic"
|
||||
@echo "loading of shared objects using the dlopen(3) interface,"
|
||||
@echo "please update the script and re-run configure.
|
||||
@echo "Please send the changes you made to bash-maintainers@gnu.org"
|
||||
@echo "for inclusion in future bash releases."
|
||||
|
||||
everything: supported others
|
||||
|
||||
print: print.o
|
||||
$(SHOBJ_LD) $(SHOBJ_LDFLAGS) $(SHOBJ_XLDFLAGS) -o $@ print.o $(SHOBJ_LIBS)
|
||||
|
||||
necho: necho.o
|
||||
$(SHOBJ_LD) $(SHOBJ_LDFLAGS) $(SHOBJ_XLDFLAGS) -o $@ necho.o $(SHOBJ_LIBS)
|
||||
|
||||
getconf: getconf.o
|
||||
$(SHOBJ_LD) $(SHOBJ_LDFLAGS) $(SHOBJ_XLDFLAGS) -o $@ getconf.o $(SHOBJ_LIBS)
|
||||
|
||||
hello: hello.o
|
||||
$(SHOBJ_LD) $(SHOBJ_LDFLAGS) $(SHOBJ_XLDFLAGS) -o $@ hello.o $(SHOBJ_LIBS)
|
||||
|
||||
truefalse: truefalse.o
|
||||
$(SHOBJ_LD) $(SHOBJ_LDFLAGS) $(SHOBJ_XLDFLAGS) -o $@ truefalse.o $(SHOBJ_LIBS)
|
||||
|
||||
sleep: sleep.o
|
||||
$(SHOBJ_LD) $(SHOBJ_LDFLAGS) $(SHOBJ_XLDFLAGS) -o $@ sleep.o $(SHOBJ_LIBS)
|
||||
|
||||
finfo: finfo.o
|
||||
$(SHOBJ_LD) $(SHOBJ_LDFLAGS) $(SHOBJ_XLDFLAGS) -o $@ finfo.o $(SHOBJ_LIBS)
|
||||
|
||||
cat: cat.o
|
||||
$(SHOBJ_LD) $(SHOBJ_LDFLAGS) $(SHOBJ_XLDFLAGS) -o $@ cat.o $(SHOBJ_LIBS)
|
||||
|
||||
logname: logname.o
|
||||
$(SHOBJ_LD) $(SHOBJ_LDFLAGS) $(SHOBJ_XLDFLAGS) -o $@ logname.o $(SHOBJ_LIBS)
|
||||
|
||||
basename: basename.o
|
||||
$(SHOBJ_LD) $(SHOBJ_LDFLAGS) $(SHOBJ_XLDFLAGS) -o $@ basename.o $(SHOBJ_LIBS)
|
||||
|
||||
dirname: dirname.o
|
||||
$(SHOBJ_LD) $(SHOBJ_LDFLAGS) $(SHOBJ_XLDFLAGS) -o $@ dirname.o $(SHOBJ_LIBS)
|
||||
|
||||
tty: tty.o
|
||||
$(SHOBJ_LD) $(SHOBJ_LDFLAGS) $(SHOBJ_XLDFLAGS) -o $@ tty.o $(SHOBJ_LIBS)
|
||||
|
||||
pathchk: pathchk.o
|
||||
$(SHOBJ_LD) $(SHOBJ_LDFLAGS) $(SHOBJ_XLDFLAGS) -o $@ pathchk.o $(SHOBJ_LIBS)
|
||||
|
||||
tee: tee.o
|
||||
$(SHOBJ_LD) $(SHOBJ_LDFLAGS) $(SHOBJ_XLDFLAGS) -o $@ tee.o $(SHOBJ_LIBS)
|
||||
|
||||
mkdir: mkdir.o
|
||||
$(SHOBJ_LD) $(SHOBJ_LDFLAGS) $(SHOBJ_XLDFLAGS) -o $@ mkdir.o $(SHOBJ_LIBS)
|
||||
|
||||
rmdir: rmdir.o
|
||||
$(SHOBJ_LD) $(SHOBJ_LDFLAGS) $(SHOBJ_XLDFLAGS) -o $@ rmdir.o $(SHOBJ_LIBS)
|
||||
|
||||
head: head.o
|
||||
$(SHOBJ_LD) $(SHOBJ_LDFLAGS) $(SHOBJ_XLDFLAGS) -o $@ head.o $(SHOBJ_LIBS)
|
||||
|
||||
printenv: printenv.o
|
||||
$(SHOBJ_LD) $(SHOBJ_LDFLAGS) $(SHOBJ_XLDFLAGS) -o $@ printenv.o $(SHOBJ_LIBS)
|
||||
|
||||
id: id.o
|
||||
$(SHOBJ_LD) $(SHOBJ_LDFLAGS) $(SHOBJ_XLDFLAGS) -o $@ id.o $(SHOBJ_LIBS)
|
||||
|
||||
whoami: whoami.o
|
||||
$(SHOBJ_LD) $(SHOBJ_LDFLAGS) $(SHOBJ_XLDFLAGS) -o $@ whoami.o $(SHOBJ_LIBS)
|
||||
|
||||
uname: uname.o
|
||||
$(SHOBJ_LD) $(SHOBJ_LDFLAGS) $(SHOBJ_XLDFLAGS) -o $@ uname.o $(SHOBJ_LIBS)
|
||||
|
||||
sync: sync.o
|
||||
$(SHOBJ_LD) $(SHOBJ_LDFLAGS) $(SHOBJ_XLDFLAGS) -o $@ sync.o $(SHOBJ_LIBS)
|
||||
|
||||
push: push.o
|
||||
$(SHOBJ_LD) $(SHOBJ_LDFLAGS) $(SHOBJ_XLDFLAGS) -o $@ push.o $(SHOBJ_LIBS)
|
||||
|
||||
ln: ln.o
|
||||
$(SHOBJ_LD) $(SHOBJ_LDFLAGS) $(SHOBJ_XLDFLAGS) -o $@ ln.o $(SHOBJ_LIBS)
|
||||
|
||||
unlink: unlink.o
|
||||
$(SHOBJ_LD) $(SHOBJ_LDFLAGS) $(SHOBJ_XLDFLAGS) -o $@ unlink.o $(SHOBJ_LIBS)
|
||||
|
||||
cut: cut.o
|
||||
$(SHOBJ_LD) $(SHOBJ_LDFLAGS) $(SHOBJ_XLDFLAGS) -o $@ cut.o $(SHOBJ_LIBS)
|
||||
|
||||
realpath: realpath.o
|
||||
$(SHOBJ_LD) $(SHOBJ_LDFLAGS) $(SHOBJ_XLDFLAGS) -o $@ realpath.o $(SHOBJ_LIBS)
|
||||
|
||||
strftime: strftime.o
|
||||
$(SHOBJ_LD) $(SHOBJ_LDFLAGS) $(SHOBJ_XLDFLAGS) -o $@ strftime.o $(SHOBJ_LIBS)
|
||||
|
||||
# pushd is a special case. We use the same source that the builtin version
|
||||
# uses, with special compilation options.
|
||||
#
|
||||
pushd.c: ${topdir}/builtins/pushd.def
|
||||
$(RM) $@
|
||||
${BUILD_DIR}/builtins/mkbuiltins -D ${topdir}/builtins ${topdir}/builtins/pushd.def
|
||||
|
||||
pushd.o: pushd.c
|
||||
$(RM) $@
|
||||
$(SHOBJ_CC) -DHAVE_CONFIG_H -DPUSHD_AND_POPD -DLOADABLE_BUILTIN $(SHOBJ_CFLAGS) $(CFLAGS) $(CPPFLAGS) $(INC) -c -o $@ $<
|
||||
|
||||
pushd: pushd.o
|
||||
$(SHOBJ_LD) $(SHOBJ_LDFLAGS) $(SHOBJ_XLDFLAGS) -o $@ pushd.o $(SHOBJ_LIBS)
|
||||
|
||||
clean:
|
||||
$(RM) $(ALLPROG) $(OTHERPROG) *.o
|
||||
-( cd perl && ${MAKE} ${MFLAGS} $@ )
|
||||
|
||||
mostlyclean: clean
|
||||
-( cd perl && ${MAKE} ${MFLAGS} $@ )
|
||||
|
||||
distclean maintainer-clean: clean
|
||||
$(RM) Makefile pushd.c
|
||||
-( cd perl && ${MAKE} ${MFLAGS} $@ )
|
||||
|
||||
print.o: print.c
|
||||
truefalse.o: truefalse.c
|
||||
sleep.o: sleep.c
|
||||
finfo.o: finfo.c
|
||||
logname.o: logname.c
|
||||
basename.o: basename.c
|
||||
dirname.o: dirname.c
|
||||
tty.o: tty.c
|
||||
pathchk.o: pathchk.c
|
||||
tee.o: tee.c
|
||||
head.o: head.c
|
||||
rmdir.o: rmdir.c
|
||||
necho.o: necho.c
|
||||
getconf.o: getconf.c
|
||||
hello.o: hello.c
|
||||
cat.o: cat.c
|
||||
printenv.o: printenv.c
|
||||
id.o: id.c
|
||||
whoami.o: whoami.c
|
||||
uname.o: uname.c
|
||||
sync.o: sync.c
|
||||
push.o: push.c
|
||||
mkdir.o: mkdir.c
|
||||
realpath.o: realpath.c
|
||||
strftime.o: strftime.c
|
||||
@@ -1,549 +0,0 @@
|
||||
#!/bin/bash
|
||||
# ash -- "Adventure shell"
|
||||
# last edit: 86/04/21 D A Gwyn
|
||||
# SCCS ID: @(#)ash.sh 1.4
|
||||
|
||||
OPATH=$PATH
|
||||
|
||||
ask()
|
||||
{
|
||||
echo -n "$@" '[y/n] '
|
||||
read ans
|
||||
|
||||
case "$ans" in
|
||||
y*|Y*)
|
||||
return 0
|
||||
;;
|
||||
*)
|
||||
return 1
|
||||
;;
|
||||
esac
|
||||
}
|
||||
|
||||
CAT=${PAGER:-more}
|
||||
|
||||
ash_inst()
|
||||
{
|
||||
cat <<- EOF
|
||||
|
||||
Instructions for the Adventure shell
|
||||
|
||||
Welcome to the Adventure shell! In this exploration of the UNIX file
|
||||
system, I will act as your eyes and hands. As you move around, I will
|
||||
describe whatever is visible and will carry out your commands. The
|
||||
general form of a command is
|
||||
Verb Object Extra_stuff.
|
||||
Most commands pay no attention to the "Extra_stuff", and many do not
|
||||
need an "Object". A typical command is
|
||||
get all
|
||||
which picks up all files in the current "room" (directory). You can
|
||||
find out what you are carrying by typing the command
|
||||
inventory
|
||||
The command "help" results in a full description of all commands that I
|
||||
understand. To quit the Adventure shell, type
|
||||
quit
|
||||
|
||||
There are UNIX monsters lurking in the background. These are also
|
||||
known as "commands with arguments".
|
||||
|
||||
Good luck!
|
||||
EOF
|
||||
}
|
||||
|
||||
ash_help()
|
||||
{
|
||||
echo "I understand the following commands (synonyms in parentheses):"
|
||||
echo ""
|
||||
|
||||
echo "change OBJECT to NEW_NAME changes the name of the object"
|
||||
echo "clone OBJECT as NEW_NAME duplicates the object"
|
||||
echo "drop OBJECTS leaves the objects in the room"
|
||||
echo "enter (go) PASSAGE takes the labeled passage"
|
||||
echo "examine OBJECTS describes the objects in detail"
|
||||
echo "feed OBJECT to MONSTER stuffs the object into a UNIX monster"
|
||||
echo "get (take) OBJECTS picks up the specified objects"
|
||||
echo "gripe (bug) report a problem with the Adventure shell"
|
||||
echo "help prints this summary"
|
||||
echo "inventory (i) tells what you are carrying"
|
||||
echo "kill (destroy) OBJECTS destroys the objects"
|
||||
echo "look (l) describes the room, including hidden objects"
|
||||
echo "open (read) OBJECT shows the contents of an object"
|
||||
echo "quit (exit) leaves the Adventure shell"
|
||||
echo "resurrect OBJECTS attempts to restore dead objects"
|
||||
echo "steal OBJECT from MONSTER obtains the object from a UNIX monster"
|
||||
echo "throw OBJECT at daemon feeds the object to the printer daemon"
|
||||
echo "up takes the overhead passage"
|
||||
echo "wake MONSTER awakens a UNIX monster"
|
||||
echo "where (w) tells you where you are"
|
||||
echo "xyzzy moves you to your home"
|
||||
}
|
||||
|
||||
MAINT=chet@ins.cwru.edu
|
||||
|
||||
PATH=/usr/ucb:/bin:/usr/bin:/usr/local/bin:.
|
||||
export PATH
|
||||
|
||||
trap 'echo Ouch!' 2 3
|
||||
#trap '' 18 # disable Berkeley job control
|
||||
|
||||
ash_lk(){ echo " $1 " | fgrep " $2 " >&- 2>&-; }
|
||||
ash_pr(){ echo $* | tr ' ' '\012' | pr -5 -t -w75 -l$[ ( $# + 4 ) / 5 ]; }
|
||||
ash_rm(){ echo " $1 " | sed -e "s/ $2 / /" -e 's/^ //' -e 's/ $//'; }
|
||||
|
||||
# enable history, bang history expansion, and emacs editing
|
||||
set -o history
|
||||
set -o histexpand
|
||||
set -o emacs
|
||||
|
||||
cd
|
||||
LIM=.limbo # $HOME/$LIM contains "destroyed" objects
|
||||
mkdir $LIM >&- 2>&-
|
||||
KNAP=.knapsack # $HOME/$KNAP contains objects being "carried"
|
||||
if [ ! -d $KNAP ]
|
||||
then mkdir $KNAP >&- 2>&-
|
||||
if [ $? = 0 ]
|
||||
then echo 'You found a discarded empty knapsack.'
|
||||
else echo 'You have no knapsack to carry things in.'
|
||||
exit 1
|
||||
fi
|
||||
else echo 'One moment while I peek in your old knapsack...'
|
||||
fi
|
||||
|
||||
kn=`echo \`ls -a $KNAP | sed -e '/^\.$/d' -e '/^\.\.$/d'\``
|
||||
|
||||
if ask 'Welcome to the Adventure shell! Do you need instructions?'
|
||||
then
|
||||
ash_inst
|
||||
echo -n 'Type a newline to continue: '
|
||||
read
|
||||
fi
|
||||
|
||||
wiz=false
|
||||
cha=false
|
||||
prev=$LIM
|
||||
while :
|
||||
do room=`pwd`
|
||||
if [ $room != $prev ]
|
||||
then if [ $room = $HOME ]
|
||||
then echo 'You are in your own home.'
|
||||
else echo "You have entered $room."
|
||||
fi
|
||||
exs=
|
||||
obs=
|
||||
hexs=
|
||||
hobs=
|
||||
f=false
|
||||
for i in `ls -a`
|
||||
do case $i in
|
||||
.|..) ;;
|
||||
.*) if [ -f $i ]
|
||||
then hobs="$hobs $i"
|
||||
elif [ -d $i ]
|
||||
then hexs="$hexs $i"
|
||||
else f=true
|
||||
fi
|
||||
;;
|
||||
*) if [ -f $i ]
|
||||
then obs="$obs $i"
|
||||
elif [ -d $i ]
|
||||
then exs="$exs $i"
|
||||
else f=true
|
||||
fi
|
||||
;;
|
||||
esac
|
||||
done
|
||||
if [ "$obs" ]
|
||||
then echo 'This room contains:'
|
||||
ash_pr $obs
|
||||
else echo 'The room looks empty.'
|
||||
fi
|
||||
if [ "$exs" ]
|
||||
then echo 'There are exits labeled:'
|
||||
ash_pr $exs
|
||||
echo 'as well as a passage overhead.'
|
||||
else echo 'There is a passage overhead.'
|
||||
fi
|
||||
if sh -c $f
|
||||
then echo 'There are shadowy figures in the corner.'
|
||||
fi
|
||||
prev=$room
|
||||
fi
|
||||
|
||||
read -e -p '-advsh> ' verb obj x # prompt is '-advsh> '
|
||||
if [ $? != 0 ]
|
||||
then verb=quit # EOF
|
||||
fi
|
||||
|
||||
case $verb in
|
||||
change) if [ "$obj" ]
|
||||
then if ash_lk "$obs $hobs" "$obj"
|
||||
then set -- $x
|
||||
case "$1" in
|
||||
to) if [ "$2" ]
|
||||
then if [ -f $2 ]
|
||||
then echo "You must destroy $2 first."
|
||||
set --
|
||||
fi
|
||||
if [ "$2" ]
|
||||
then if mv $obj $2 >&- 2>&-
|
||||
then echo "The $obj shimmers and turns into $2."
|
||||
obs=`ash_rm "$2 $obs" "$obj"`
|
||||
else echo "There is a cloud of smoke but the $obj is unchanged."
|
||||
fi
|
||||
fi
|
||||
else echo 'To what?'
|
||||
fi
|
||||
;;
|
||||
*) echo "Change $obj to what?"
|
||||
;;
|
||||
esac
|
||||
else if ash_lk "$kn" "$obj"
|
||||
then echo 'You must drop it first.'
|
||||
else echo "I see no $obj here."
|
||||
fi
|
||||
fi
|
||||
else echo 'Change what?'
|
||||
fi
|
||||
;;
|
||||
clone) if [ "$obj" ]
|
||||
then if ash_lk "$obs $hobs" "$obj"
|
||||
then if [ ! -r $obj ]
|
||||
then echo "The $obj does not wish to be cloned."
|
||||
else set -- $x
|
||||
case "$1" in
|
||||
as) if [ "$2" ]
|
||||
then if [ -f $2 ]
|
||||
then echo "You must destroy $2 first."
|
||||
else if cp $obj $2 >&- 2>&-
|
||||
then echo "Poof! When the smoke clears, you see the new $2."
|
||||
obs="$obs $2"
|
||||
else echo 'You hear a dull thud but no clone appears.'
|
||||
fi
|
||||
fi
|
||||
else echo 'As what?'
|
||||
fi
|
||||
;;
|
||||
*) echo "Clone $obj as what?"
|
||||
;;
|
||||
esac
|
||||
fi
|
||||
else if ash_lk "$kn" "$obj"
|
||||
then echo 'You must drop it first.'
|
||||
else echo "I see no $obj here."
|
||||
fi
|
||||
fi
|
||||
else echo 'Clone what?'
|
||||
fi
|
||||
;;
|
||||
drop) if [ "$obj" ]
|
||||
then for it in $obj $x
|
||||
do if ash_lk "$kn" "$it"
|
||||
then if [ -w $it ]
|
||||
then echo "You must destroy $it first."
|
||||
else if mv $HOME/$KNAP/$it $it >&- 2>&-
|
||||
then echo "$it: dropped."
|
||||
kn=`ash_rm "$kn" "$it"`
|
||||
obs=`echo $it $obs`
|
||||
else echo "The $it is caught in your knapsack."
|
||||
fi
|
||||
fi
|
||||
else echo "You're not carrying the $it!"
|
||||
fi
|
||||
done
|
||||
else echo 'Drop what?'
|
||||
fi
|
||||
;;
|
||||
enter|go) if [ "$obj" ]
|
||||
then if [ $obj != up ]
|
||||
then if ash_lk "$exs $hexs" "$obj"
|
||||
then if [ -x $obj ]
|
||||
then if cd $obj
|
||||
then echo 'You squeeze through the passage.'
|
||||
else echo "You can't go that direction."
|
||||
fi
|
||||
else echo 'An invisible force blocks your way.'
|
||||
fi
|
||||
else echo 'I see no such passage.'
|
||||
fi
|
||||
else if cd ..
|
||||
then echo 'You struggle upwards.'
|
||||
else echo "You can't reach that high."
|
||||
fi
|
||||
fi
|
||||
else echo 'Which passage?'
|
||||
fi
|
||||
;;
|
||||
examine) if [ "$obj" ]
|
||||
then if [ $obj = all ]
|
||||
then $obj=`echo $obs $exs`
|
||||
x=
|
||||
fi
|
||||
for it in $obj $x
|
||||
do if ash_lk "$obs $hobs $exs $hexs" "$it"
|
||||
then echo "Upon close inspection of the $it, you see:"
|
||||
ls -ld $it 2>&-
|
||||
if [ $? != 0 ]
|
||||
then echo "-- when you look directly at the $it, it vanishes."
|
||||
fi
|
||||
else if ash_lk "$kn" "$it"
|
||||
then echo 'You must drop it first.'
|
||||
else echo "I see no $it here."
|
||||
fi
|
||||
fi
|
||||
done
|
||||
else echo 'Examine what?'
|
||||
fi
|
||||
;;
|
||||
feed) if [ "$obj" ]
|
||||
then if ash_lk "$obs $hobs" "$obj"
|
||||
then set -- $x
|
||||
case "$1" in
|
||||
to) if [ "$2" ]
|
||||
then shift
|
||||
if PATH=$OPATH $* <$obj 2>&-
|
||||
then echo "The $1 monster devours your $obj."
|
||||
if rm -f $obj >&- 2>&-
|
||||
then obs=`ash_rm "$obs" "$obj"`
|
||||
else echo 'But he spits it back up.'
|
||||
fi
|
||||
else echo "The $1 monster holds his nose in disdain."
|
||||
fi
|
||||
else echo 'To what?'
|
||||
fi
|
||||
;;
|
||||
*) echo "Feed $obj to what?"
|
||||
;;
|
||||
esac
|
||||
else if ash_lk "$kn" "$obj"
|
||||
then echo 'You must drop it first.'
|
||||
else echo "I see no $obj here."
|
||||
fi
|
||||
fi
|
||||
else echo 'Feed what?'
|
||||
fi
|
||||
;;
|
||||
get|take) if [ "$obj" ]
|
||||
then if [ $obj = all ]
|
||||
then obj="$obs"
|
||||
x=
|
||||
fi
|
||||
for it in $obj $x
|
||||
do if ash_lk "$obs $hobs" "$it"
|
||||
then if ash_lk "$kn" "$it"
|
||||
then echo 'You already have one.'
|
||||
else if mv $it $HOME/$KNAP/$it >&- 2>&-
|
||||
then echo "$it: taken."
|
||||
kn="$it $kn"
|
||||
obs=`ash_rm "$obs" "$it"`
|
||||
else echo "The $it is too heavy."
|
||||
fi
|
||||
fi
|
||||
else echo "I see no $it here."
|
||||
fi
|
||||
done
|
||||
else echo 'Get what?'
|
||||
fi
|
||||
;;
|
||||
gripe|bug) echo 'Please describe the problem and your situation at the time it failed.\nEnd the bug report with a line containing just a Ctrl-D.'
|
||||
cat | mail $MAINT -s 'ash bug'
|
||||
echo 'Thank you!'
|
||||
;;
|
||||
help) ash_help
|
||||
;;
|
||||
inventory|i) if [ "$kn" ]
|
||||
then echo 'Your knapsack contains:'
|
||||
ash_pr $kn
|
||||
else echo 'You are poverty-stricken.'
|
||||
fi
|
||||
;;
|
||||
kill|destroy) if [ "$obj" ]
|
||||
then if [ $obj = all ]
|
||||
then x=
|
||||
if ask "Do you really want to attempt to $verb them all?"
|
||||
then obj=`echo $obs`
|
||||
else echo 'Chicken!'
|
||||
obj=
|
||||
fi
|
||||
fi
|
||||
for it in $obj $x
|
||||
do if ash_lk "$obs $hobs" "$it"
|
||||
then if mv $it $HOME/$LIM <&- >&- 2>&-
|
||||
then if [ $verb = kill ]
|
||||
then echo "The $it cannot defend himself; he dies."
|
||||
else echo "You have destroyed the $it; it vanishes."
|
||||
fi
|
||||
obs=`ash_rm "$obs" "$it"`
|
||||
else if [ $verb = kill ]
|
||||
then echo "Your feeble blows are no match for the $it."
|
||||
else echo "The $it is indestructible."
|
||||
fi
|
||||
fi
|
||||
else if ash_lk "$kn" "$it"
|
||||
then echo "You must drop the $it first."
|
||||
found=false
|
||||
else echo "I see no $it here."
|
||||
fi
|
||||
fi
|
||||
done
|
||||
else echo 'Kill what?'
|
||||
fi
|
||||
;;
|
||||
look|l) obs=`echo $obs $hobs`
|
||||
hobs=
|
||||
if [ "$obs" ]
|
||||
then echo 'The room contains:'
|
||||
ash_pr $obs
|
||||
else echo 'The room is empty.'
|
||||
fi
|
||||
exs=`echo $exs $hexs`
|
||||
hexs=
|
||||
if [ "$exs" ]
|
||||
then echo 'There are exits plainly labeled:'
|
||||
ash_pr $exs
|
||||
echo 'and a passage directly overhead.'
|
||||
else echo 'The only exit is directly overhead.'
|
||||
fi
|
||||
;;
|
||||
magic) if [ "$obj" = mode ]
|
||||
then if sh -c $cha
|
||||
then echo 'You had your chance and you blew it.'
|
||||
else if ask 'Are you a wizard?'
|
||||
then echo -n 'Prove it! Say the magic word: '
|
||||
read obj
|
||||
if [ "$obj" = armadillo ]
|
||||
then echo 'Yes, master!!'
|
||||
wiz=true
|
||||
else echo "Homie says: I don't think so"
|
||||
cha=true
|
||||
fi
|
||||
else echo "I didn't think so."
|
||||
fi
|
||||
fi
|
||||
else echo 'Nice try.'
|
||||
fi
|
||||
;;
|
||||
open|read) if [ "$obj" ]
|
||||
then if ash_lk "$obs $hobs" "$obj"
|
||||
then if [ -r $obj ]
|
||||
then if [ -s $obj ]
|
||||
then echo "Opening the $obj reveals:"
|
||||
$CAT < $obj
|
||||
if [ $? != 0 ]
|
||||
then echo '-- oops, you lost the contents!'
|
||||
fi
|
||||
else echo "There is nothing inside the $obj."
|
||||
fi
|
||||
else echo "You do not have the proper tools to open the $obj."
|
||||
fi
|
||||
else if ash_lk "$kn" "$obj"
|
||||
then echo 'You must drop it first.'
|
||||
found=false
|
||||
else echo "I see no $obj here."
|
||||
fi
|
||||
fi
|
||||
else echo 'Open what?'
|
||||
fi
|
||||
;;
|
||||
quit|exit) if ask 'Do you really want to quit now?'
|
||||
then if [ "$kn" ]
|
||||
then echo 'The contents of your knapsack will still be there next time.'
|
||||
fi
|
||||
rm -rf $HOME/$LIM
|
||||
echo 'See you later!'
|
||||
exit 0
|
||||
fi
|
||||
;;
|
||||
resurrect) if [ "$obj" ]
|
||||
then for it in $obj $x
|
||||
do if ash_lk "$obs $hobs" "$it"
|
||||
then echo "The $it is already alive and well."
|
||||
else if mv $HOME/$LIM/$it $it <&- >&- 2>&-
|
||||
then echo "The $it staggers to his feet."
|
||||
obs=`echo $it $obs`
|
||||
else echo "There are sparks but no $it appears."
|
||||
fi
|
||||
fi
|
||||
done
|
||||
else echo 'Resurrect what?'
|
||||
fi
|
||||
;;
|
||||
steal) if [ "$obj" ]
|
||||
then if ash_lk "$obs $hobs" "$obj"
|
||||
then echo 'There is already one here.'
|
||||
else set -- $x
|
||||
case "$1" in
|
||||
from) if [ "$2" ]
|
||||
then shift
|
||||
if PATH=$OPATH $* >$obj 2>&-
|
||||
then echo "The $1 monster drops the $obj."
|
||||
obs=`echo $obj $obs`
|
||||
else echo "The $1 monster runs away as you approach."
|
||||
rm -f $obj >&- 2>&-
|
||||
fi
|
||||
else echo 'From what?'
|
||||
fi
|
||||
;;
|
||||
*) echo "Steal $obj from what?"
|
||||
;;
|
||||
esac
|
||||
fi
|
||||
else echo 'Steal what?'
|
||||
fi
|
||||
;;
|
||||
throw) if [ "$obj" ]
|
||||
then if ash_lk "$obs $hobs" "$obj"
|
||||
then set -- $x
|
||||
case "$1" in
|
||||
at) case "$2" in
|
||||
daemon) if sh -c "lpr -r $obj"
|
||||
then echo "The daemon catches the $obj, turns it into paper,\nand leaves it in the basket."
|
||||
obs=`ash_rm "$obs" "$obj"`
|
||||
else echo "The daemon is nowhere to be found."
|
||||
fi
|
||||
;;
|
||||
*) echo 'At what?'
|
||||
;;
|
||||
esac
|
||||
;;
|
||||
*) echo "Throw $obj at what?"
|
||||
;;
|
||||
esac
|
||||
else if ash_lk "$kn" "$obj"
|
||||
then echo 'It is in your knapsack.'
|
||||
found=false
|
||||
else echo "I see no $obj here."
|
||||
fi
|
||||
fi
|
||||
else echo 'Throw what?'
|
||||
fi
|
||||
;;
|
||||
u|up) if cd ..
|
||||
then echo 'You pull yourself up a level.'
|
||||
else echo "You can't reach that high."
|
||||
fi
|
||||
;;
|
||||
wake) if [ "$obj" ]
|
||||
then echo "You awaken the $obj monster:"
|
||||
PATH=$OPATH $obj $x
|
||||
echo 'The monster slithers back into the darkness.'
|
||||
else echo 'Wake what?'
|
||||
fi
|
||||
;;
|
||||
w|where) echo "You are in $room."
|
||||
;;
|
||||
xyzzy) if cd
|
||||
then echo 'A strange feeling comes over you.'
|
||||
else echo 'Your spell fizzles out.'
|
||||
fi
|
||||
;;
|
||||
*) if [ "$verb" ]
|
||||
then if sh -c $wiz
|
||||
then PATH=$OPATH $verb $obj $x
|
||||
else echo "I don't know how to \"$verb\"."
|
||||
echo 'Type "help" for assistance.'
|
||||
fi
|
||||
else echo 'Say something!'
|
||||
fi
|
||||
;;
|
||||
esac
|
||||
done
|
||||
File diff suppressed because it is too large
Load Diff
@@ -1,76 +0,0 @@
|
||||
# This makefile for Readline library documentation is in -*- text -*- mode.
|
||||
# Emacs likes it that way.
|
||||
RM = rm -f
|
||||
|
||||
MAKEINFO = makeinfo
|
||||
TEXI2DVI = texi2dvi
|
||||
TEXI2HTML = texi2html
|
||||
QUIETPS = #set this to -q to shut up dvips
|
||||
DVIPS = dvips -D 300 $(QUIETPS) -o $@ # tricky
|
||||
|
||||
INSTALL_DATA = cp
|
||||
infodir = /usr/local/info
|
||||
|
||||
RLSRC = rlman.texinfo rluser.texinfo rltech.texinfo
|
||||
HISTSRC = hist.texinfo hsuser.texinfo hstech.texinfo
|
||||
|
||||
DVIOBJ = readline.dvi history.dvi
|
||||
INFOOBJ = readline.info history.info
|
||||
PSOBJ = readline.ps history.ps
|
||||
HTMLOBJ = readline.html history.html
|
||||
|
||||
all: info dvi html ps
|
||||
nodvi: info html
|
||||
|
||||
readline.dvi: $(RLSRC)
|
||||
$(TEXI2DVI) rlman.texinfo
|
||||
mv rlman.dvi readline.dvi
|
||||
|
||||
readline.info: $(RLSRC)
|
||||
$(MAKEINFO) --no-split -o $@ rlman.texinfo
|
||||
|
||||
history.dvi: ${HISTSRC}
|
||||
$(TEXI2DVI) hist.texinfo
|
||||
mv hist.dvi history.dvi
|
||||
|
||||
history.info: ${HISTSRC}
|
||||
$(MAKEINFO) --no-split -o $@ hist.texinfo
|
||||
|
||||
readline.ps: readline.dvi
|
||||
$(RM) $@
|
||||
$(DVIPS) readline.dvi
|
||||
|
||||
history.ps: history.dvi
|
||||
$(RM) $@
|
||||
$(DVIPS) history.dvi
|
||||
|
||||
readline.html: ${RLSRC}
|
||||
$(TEXI2HTML) rlman.texinfo
|
||||
sed -e 's:rlman.html:readline.html:' -e 's:rlman_toc.html:readline_toc.html:' rlman.html > readline.html
|
||||
sed -e 's:rlman.html:readline.html:' -e 's:rlman_toc.html:readline_toc.html:' rlman_toc.html > readline_toc.html
|
||||
$(RM) rlman.html rlman_toc.html
|
||||
|
||||
history.html: ${HISTSRC}
|
||||
$(TEXI2HTML) hist.texinfo
|
||||
sed -e 's:hist.html:history.html:' -e 's:hist_toc.html:history_toc.html:' hist.html > history.html
|
||||
sed -e 's:hist.html:history.html:' -e 's:hist_toc.html:history_toc.html:' hist_toc.html > history_toc.html
|
||||
$(RM) hist.html hist_toc.html
|
||||
|
||||
info: $(INFOOBJ)
|
||||
dvi: $(DVIOBJ)
|
||||
ps: $(PSOBJ)
|
||||
html: $(HTMLOBJ)
|
||||
|
||||
clean:
|
||||
$(RM) *.aux *.cp *.fn *.ky *.log *.pg *.toc *.tp *.vr *.cps *.pgs \
|
||||
*.fns *.kys *.tps *.vrs *.o core
|
||||
|
||||
distclean: clean
|
||||
mostlyclean: clean
|
||||
|
||||
maintainer-clean: clean
|
||||
$(RM) *.dvi *.info *.info-* *.ps *.html
|
||||
|
||||
install: info
|
||||
${INSTALL_DATA} readline.info $(infodir)/readline.info
|
||||
${INSTALL_DATA} history.info $(infodir)/history.info
|
||||
@@ -1,79 +0,0 @@
|
||||
/* quit.h -- How to handle SIGINT gracefully. */
|
||||
|
||||
/* Copyright (C) 1993-2013 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/>.
|
||||
*/
|
||||
|
||||
#if !defined (_QUIT_H_)
|
||||
#define _QUIT_H_
|
||||
|
||||
/* Non-zero means SIGINT has already ocurred. */
|
||||
extern volatile int interrupt_state;
|
||||
extern volatile int terminating_signal;
|
||||
|
||||
extern sig_atomic_t sigterm_received;
|
||||
|
||||
/* Macro to call a great deal. SIGINT just sets the interrupt_state variable.
|
||||
When it is safe, put QUIT in the code, and the "interrupt" will take
|
||||
place. The same scheme is used for terminating signals (e.g., SIGHUP)
|
||||
and the terminating_signal variable. That calls a function which will
|
||||
end up exiting the shell. */
|
||||
#define QUIT \
|
||||
do { \
|
||||
if (terminating_signal) termsig_handler (terminating_signal); \
|
||||
if (interrupt_state) throw_to_top_level (); \
|
||||
} while (0)
|
||||
|
||||
#define CHECK_ALRM \
|
||||
do { \
|
||||
if (sigalrm_seen) \
|
||||
longjmp (alrmbuf, 1); \
|
||||
} while (0)
|
||||
|
||||
#define SETINTERRUPT interrupt_state = 1
|
||||
#define CLRINTERRUPT interrupt_state = 0
|
||||
|
||||
#define ADDINTERRUPT interrupt_state++
|
||||
#define DELINTERRUPT interrupt_state--
|
||||
|
||||
/* The same sort of thing, this time just for signals that would ordinarily
|
||||
cause the shell to terminate. */
|
||||
|
||||
#define CHECK_TERMSIG \
|
||||
do { \
|
||||
if (terminating_signal) termsig_handler (terminating_signal); \
|
||||
} while (0)
|
||||
|
||||
#define LASTSIG() \
|
||||
(terminating_signal ? terminating_signal : (interrupt_state ? SIGINT : 0))
|
||||
|
||||
#define CHECK_WAIT_INTR \
|
||||
do { \
|
||||
if (wait_signal_received && this_shell_builtin && (this_shell_builtin == wait_builtin)) \
|
||||
longjmp (wait_intr_buf, 1); \
|
||||
} while (0)
|
||||
|
||||
#define RESET_SIGTERM \
|
||||
do { \
|
||||
sigterm_received = 0; \
|
||||
} while (0)
|
||||
|
||||
#define CHECK_SIGTERM \
|
||||
do { \
|
||||
if (sigterm_received) termsig_handler (SIGTERM); \
|
||||
} while (0)
|
||||
#endif /* _QUIT_H_ */
|
||||
@@ -1,722 +0,0 @@
|
||||
/* sig.c - interface for shell signal handlers and signal initialization. */
|
||||
|
||||
/* Copyright (C) 1994-2013 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/>.
|
||||
*/
|
||||
|
||||
#include "config.h"
|
||||
|
||||
#include "bashtypes.h"
|
||||
|
||||
#if defined (HAVE_UNISTD_H)
|
||||
# ifdef _MINIX
|
||||
# include <sys/types.h>
|
||||
# endif
|
||||
# include <unistd.h>
|
||||
#endif
|
||||
|
||||
#include <stdio.h>
|
||||
#include <signal.h>
|
||||
|
||||
#include "bashintl.h"
|
||||
|
||||
#include "shell.h"
|
||||
#if defined (JOB_CONTROL)
|
||||
#include "jobs.h"
|
||||
#endif /* JOB_CONTROL */
|
||||
#include "siglist.h"
|
||||
#include "sig.h"
|
||||
#include "trap.h"
|
||||
|
||||
#include "builtins/common.h"
|
||||
|
||||
#if defined (READLINE)
|
||||
# include "bashline.h"
|
||||
# include <readline/readline.h>
|
||||
#endif
|
||||
|
||||
#if defined (HISTORY)
|
||||
# include "bashhist.h"
|
||||
#endif
|
||||
|
||||
extern int last_command_exit_value;
|
||||
extern int last_command_exit_signal;
|
||||
extern int return_catch_flag;
|
||||
extern int loop_level, continuing, breaking, funcnest;
|
||||
extern int executing_list;
|
||||
extern int comsub_ignore_return;
|
||||
extern int parse_and_execute_level, shell_initialized;
|
||||
#if defined (HISTORY)
|
||||
extern int history_lines_this_session;
|
||||
#endif
|
||||
extern int no_line_editing;
|
||||
|
||||
extern void initialize_siglist ();
|
||||
|
||||
/* Non-zero after SIGINT. */
|
||||
volatile int interrupt_state = 0;
|
||||
|
||||
/* Non-zero after SIGWINCH */
|
||||
volatile int sigwinch_received = 0;
|
||||
|
||||
/* Set to the value of any terminating signal received. */
|
||||
volatile int terminating_signal = 0;
|
||||
|
||||
sig_atomic_t sigterm_received = 0;
|
||||
|
||||
/* The environment at the top-level R-E loop. We use this in
|
||||
the case of error return. */
|
||||
procenv_t top_level;
|
||||
|
||||
#if defined (JOB_CONTROL) || defined (HAVE_POSIX_SIGNALS)
|
||||
/* The signal masks that this shell runs with. */
|
||||
sigset_t top_level_mask;
|
||||
#endif /* JOB_CONTROL */
|
||||
|
||||
/* When non-zero, we throw_to_top_level (). */
|
||||
int interrupt_immediately = 0;
|
||||
|
||||
/* When non-zero, we call the terminating signal handler immediately. */
|
||||
int terminate_immediately = 0;
|
||||
|
||||
#if defined (SIGWINCH)
|
||||
static SigHandler *old_winch = (SigHandler *)SIG_DFL;
|
||||
#endif
|
||||
|
||||
static void initialize_shell_signals __P((void));
|
||||
|
||||
void
|
||||
initialize_signals (reinit)
|
||||
int reinit;
|
||||
{
|
||||
initialize_shell_signals ();
|
||||
initialize_job_signals ();
|
||||
#if !defined (HAVE_SYS_SIGLIST) && !defined (HAVE_UNDER_SYS_SIGLIST) && !defined (HAVE_STRSIGNAL)
|
||||
if (reinit == 0)
|
||||
initialize_siglist ();
|
||||
#endif /* !HAVE_SYS_SIGLIST && !HAVE_UNDER_SYS_SIGLIST && !HAVE_STRSIGNAL */
|
||||
}
|
||||
|
||||
/* A structure describing a signal that terminates the shell if not
|
||||
caught. The orig_handler member is present so children can reset
|
||||
these signals back to their original handlers. */
|
||||
struct termsig {
|
||||
int signum;
|
||||
SigHandler *orig_handler;
|
||||
int orig_flags;
|
||||
};
|
||||
|
||||
#define NULL_HANDLER (SigHandler *)SIG_DFL
|
||||
|
||||
/* The list of signals that would terminate the shell if not caught.
|
||||
We catch them, but just so that we can write the history file,
|
||||
and so forth. */
|
||||
static struct termsig terminating_signals[] = {
|
||||
#ifdef SIGHUP
|
||||
{ SIGHUP, NULL_HANDLER, 0 },
|
||||
#endif
|
||||
|
||||
#ifdef SIGINT
|
||||
{ SIGINT, NULL_HANDLER, 0 },
|
||||
#endif
|
||||
|
||||
#ifdef SIGILL
|
||||
{ SIGILL, NULL_HANDLER, 0 },
|
||||
#endif
|
||||
|
||||
#ifdef SIGTRAP
|
||||
{ SIGTRAP, NULL_HANDLER, 0 },
|
||||
#endif
|
||||
|
||||
#ifdef SIGIOT
|
||||
{ SIGIOT, NULL_HANDLER, 0 },
|
||||
#endif
|
||||
|
||||
#ifdef SIGDANGER
|
||||
{ SIGDANGER, NULL_HANDLER, 0 },
|
||||
#endif
|
||||
|
||||
#ifdef SIGEMT
|
||||
{ SIGEMT, NULL_HANDLER, 0 },
|
||||
#endif
|
||||
|
||||
#ifdef SIGFPE
|
||||
{ SIGFPE, NULL_HANDLER, 0 },
|
||||
#endif
|
||||
|
||||
#ifdef SIGBUS
|
||||
{ SIGBUS, NULL_HANDLER, 0 },
|
||||
#endif
|
||||
|
||||
#ifdef SIGSEGV
|
||||
{ SIGSEGV, NULL_HANDLER, 0 },
|
||||
#endif
|
||||
|
||||
#ifdef SIGSYS
|
||||
{ SIGSYS, NULL_HANDLER, 0 },
|
||||
#endif
|
||||
|
||||
#ifdef SIGPIPE
|
||||
{ SIGPIPE, NULL_HANDLER, 0 },
|
||||
#endif
|
||||
|
||||
#ifdef SIGALRM
|
||||
{ SIGALRM, NULL_HANDLER, 0 },
|
||||
#endif
|
||||
|
||||
#ifdef SIGTERM
|
||||
{ SIGTERM, NULL_HANDLER, 0 },
|
||||
#endif
|
||||
|
||||
#ifdef SIGXCPU
|
||||
{ SIGXCPU, NULL_HANDLER, 0 },
|
||||
#endif
|
||||
|
||||
#ifdef SIGXFSZ
|
||||
{ SIGXFSZ, NULL_HANDLER, 0 },
|
||||
#endif
|
||||
|
||||
#ifdef SIGVTALRM
|
||||
{ SIGVTALRM, NULL_HANDLER, 0 },
|
||||
#endif
|
||||
|
||||
#if 0
|
||||
#ifdef SIGPROF
|
||||
{ SIGPROF, NULL_HANDLER, 0 },
|
||||
#endif
|
||||
#endif
|
||||
|
||||
#ifdef SIGLOST
|
||||
{ SIGLOST, NULL_HANDLER, 0 },
|
||||
#endif
|
||||
|
||||
#ifdef SIGUSR1
|
||||
{ SIGUSR1, NULL_HANDLER, 0 },
|
||||
#endif
|
||||
|
||||
#ifdef SIGUSR2
|
||||
{ SIGUSR2, NULL_HANDLER, 0 },
|
||||
#endif
|
||||
};
|
||||
|
||||
#define TERMSIGS_LENGTH (sizeof (terminating_signals) / sizeof (struct termsig))
|
||||
|
||||
#define XSIG(x) (terminating_signals[x].signum)
|
||||
#define XHANDLER(x) (terminating_signals[x].orig_handler)
|
||||
#define XSAFLAGS(x) (terminating_signals[x].orig_flags)
|
||||
|
||||
static int termsigs_initialized = 0;
|
||||
|
||||
/* Initialize signals that will terminate the shell to do some
|
||||
unwind protection. For non-interactive shells, we only call
|
||||
this when a trap is defined for EXIT (0) or when trap is run
|
||||
to display signal dispositions. */
|
||||
void
|
||||
initialize_terminating_signals ()
|
||||
{
|
||||
register int i;
|
||||
#if defined (HAVE_POSIX_SIGNALS)
|
||||
struct sigaction act, oact;
|
||||
#endif
|
||||
|
||||
if (termsigs_initialized)
|
||||
return;
|
||||
|
||||
/* The following code is to avoid an expensive call to
|
||||
set_signal_handler () for each terminating_signals. Fortunately,
|
||||
this is possible in Posix. Unfortunately, we have to call signal ()
|
||||
on non-Posix systems for each signal in terminating_signals. */
|
||||
#if defined (HAVE_POSIX_SIGNALS)
|
||||
act.sa_handler = termsig_sighandler;
|
||||
act.sa_flags = 0;
|
||||
sigemptyset (&act.sa_mask);
|
||||
sigemptyset (&oact.sa_mask);
|
||||
for (i = 0; i < TERMSIGS_LENGTH; i++)
|
||||
sigaddset (&act.sa_mask, XSIG (i));
|
||||
for (i = 0; i < TERMSIGS_LENGTH; i++)
|
||||
{
|
||||
/* If we've already trapped it, don't do anything. */
|
||||
if (signal_is_trapped (XSIG (i)))
|
||||
continue;
|
||||
|
||||
sigaction (XSIG (i), &act, &oact);
|
||||
XHANDLER(i) = oact.sa_handler;
|
||||
XSAFLAGS(i) = oact.sa_flags;
|
||||
/* Don't do anything with signals that are ignored at shell entry
|
||||
if the shell is not interactive. */
|
||||
/* XXX - should we do this for interactive shells, too? */
|
||||
if (interactive_shell == 0 && XHANDLER (i) == SIG_IGN)
|
||||
{
|
||||
sigaction (XSIG (i), &oact, &act);
|
||||
set_signal_ignored (XSIG (i));
|
||||
}
|
||||
#if defined (SIGPROF) && !defined (_MINIX)
|
||||
if (XSIG (i) == SIGPROF && XHANDLER (i) != SIG_DFL && XHANDLER (i) != SIG_IGN)
|
||||
sigaction (XSIG (i), &oact, (struct sigaction *)NULL);
|
||||
#endif /* SIGPROF && !_MINIX */
|
||||
}
|
||||
|
||||
#else /* !HAVE_POSIX_SIGNALS */
|
||||
|
||||
for (i = 0; i < TERMSIGS_LENGTH; i++)
|
||||
{
|
||||
/* If we've already trapped it, don't do anything. */
|
||||
if (signal_is_trapped (XSIG (i)))
|
||||
continue;
|
||||
|
||||
XHANDLER(i) = signal (XSIG (i), termsig_sighandler);
|
||||
XSAFLAGS(i) = 0;
|
||||
/* Don't do anything with signals that are ignored at shell entry
|
||||
if the shell is not interactive. */
|
||||
/* XXX - should we do this for interactive shells, too? */
|
||||
if (interactive_shell == 0 && XHANDLER (i) == SIG_IGN)
|
||||
{
|
||||
signal (XSIG (i), SIG_IGN);
|
||||
set_signal_ignored (XSIG (i));
|
||||
}
|
||||
#ifdef SIGPROF
|
||||
if (XSIG (i) == SIGPROF && XHANDLER (i) != SIG_DFL && XHANDLER (i) != SIG_IGN)
|
||||
signal (XSIG (i), XHANDLER (i));
|
||||
#endif
|
||||
}
|
||||
|
||||
#endif /* !HAVE_POSIX_SIGNALS */
|
||||
|
||||
termsigs_initialized = 1;
|
||||
}
|
||||
|
||||
static void
|
||||
initialize_shell_signals ()
|
||||
{
|
||||
if (interactive)
|
||||
initialize_terminating_signals ();
|
||||
|
||||
#if defined (JOB_CONTROL) || defined (HAVE_POSIX_SIGNALS)
|
||||
/* All shells use the signal mask they inherit, and pass it along
|
||||
to child processes. Children will never block SIGCHLD, though. */
|
||||
sigemptyset (&top_level_mask);
|
||||
sigprocmask (SIG_BLOCK, (sigset_t *)NULL, &top_level_mask);
|
||||
# if defined (SIGCHLD)
|
||||
sigdelset (&top_level_mask, SIGCHLD);
|
||||
# endif
|
||||
#endif /* JOB_CONTROL || HAVE_POSIX_SIGNALS */
|
||||
|
||||
/* And, some signals that are specifically ignored by the shell. */
|
||||
set_signal_handler (SIGQUIT, SIG_IGN);
|
||||
|
||||
if (interactive)
|
||||
{
|
||||
set_signal_handler (SIGINT, sigint_sighandler);
|
||||
get_original_signal (SIGTERM);
|
||||
if (signal_is_hard_ignored (SIGTERM) == 0)
|
||||
set_signal_handler (SIGTERM, sigterm_sighandler);
|
||||
set_sigwinch_handler ();
|
||||
}
|
||||
}
|
||||
|
||||
void
|
||||
reset_terminating_signals ()
|
||||
{
|
||||
register int i;
|
||||
#if defined (HAVE_POSIX_SIGNALS)
|
||||
struct sigaction act;
|
||||
#endif
|
||||
|
||||
if (termsigs_initialized == 0)
|
||||
return;
|
||||
|
||||
#if defined (HAVE_POSIX_SIGNALS)
|
||||
act.sa_flags = 0;
|
||||
sigemptyset (&act.sa_mask);
|
||||
for (i = 0; i < TERMSIGS_LENGTH; i++)
|
||||
{
|
||||
/* Skip a signal if it's trapped or handled specially, because the
|
||||
trap code will restore the correct value. */
|
||||
if (signal_is_trapped (XSIG (i)) || signal_is_special (XSIG (i)))
|
||||
continue;
|
||||
|
||||
act.sa_handler = XHANDLER (i);
|
||||
act.sa_flags = XSAFLAGS (i);
|
||||
sigaction (XSIG (i), &act, (struct sigaction *) NULL);
|
||||
}
|
||||
#else /* !HAVE_POSIX_SIGNALS */
|
||||
for (i = 0; i < TERMSIGS_LENGTH; i++)
|
||||
{
|
||||
if (signal_is_trapped (XSIG (i)) || signal_is_special (XSIG (i)))
|
||||
continue;
|
||||
|
||||
signal (XSIG (i), XHANDLER (i));
|
||||
}
|
||||
#endif /* !HAVE_POSIX_SIGNALS */
|
||||
|
||||
termsigs_initialized = 0;
|
||||
}
|
||||
#undef XSIG
|
||||
#undef XHANDLER
|
||||
|
||||
/* Run some of the cleanups that should be performed when we run
|
||||
jump_to_top_level from a builtin command context. XXX - might want to
|
||||
also call reset_parser here. */
|
||||
void
|
||||
top_level_cleanup ()
|
||||
{
|
||||
/* Clean up string parser environment. */
|
||||
while (parse_and_execute_level)
|
||||
parse_and_execute_cleanup ();
|
||||
|
||||
#if defined (PROCESS_SUBSTITUTION)
|
||||
unlink_fifo_list ();
|
||||
#endif /* PROCESS_SUBSTITUTION */
|
||||
|
||||
run_unwind_protects ();
|
||||
loop_level = continuing = breaking = funcnest = 0;
|
||||
executing_list = comsub_ignore_return = return_catch_flag = 0;
|
||||
}
|
||||
|
||||
/* What to do when we've been interrupted, and it is safe to handle it. */
|
||||
void
|
||||
throw_to_top_level ()
|
||||
{
|
||||
int print_newline = 0;
|
||||
|
||||
if (interrupt_state)
|
||||
{
|
||||
if (last_command_exit_value < 128)
|
||||
last_command_exit_value = 128 + SIGINT;
|
||||
print_newline = 1;
|
||||
DELINTERRUPT;
|
||||
}
|
||||
|
||||
if (interrupt_state)
|
||||
return;
|
||||
|
||||
last_command_exit_signal = (last_command_exit_value > 128) ?
|
||||
(last_command_exit_value - 128) : 0;
|
||||
last_command_exit_value |= 128;
|
||||
|
||||
/* Run any traps set on SIGINT. */
|
||||
run_interrupt_trap ();
|
||||
|
||||
/* Clean up string parser environment. */
|
||||
while (parse_and_execute_level)
|
||||
parse_and_execute_cleanup ();
|
||||
|
||||
#if defined (JOB_CONTROL)
|
||||
give_terminal_to (shell_pgrp, 0);
|
||||
#endif /* JOB_CONTROL */
|
||||
|
||||
#if defined (JOB_CONTROL) || defined (HAVE_POSIX_SIGNALS)
|
||||
/* This needs to stay because jobs.c:make_child() uses it without resetting
|
||||
the signal mask. */
|
||||
sigprocmask (SIG_SETMASK, &top_level_mask, (sigset_t *)NULL);
|
||||
#endif
|
||||
|
||||
reset_parser ();
|
||||
|
||||
#if defined (READLINE)
|
||||
if (interactive)
|
||||
bashline_reset ();
|
||||
#endif /* READLINE */
|
||||
|
||||
#if defined (PROCESS_SUBSTITUTION)
|
||||
unlink_fifo_list ();
|
||||
#endif /* PROCESS_SUBSTITUTION */
|
||||
|
||||
run_unwind_protects ();
|
||||
loop_level = continuing = breaking = funcnest = 0;
|
||||
executing_list = comsub_ignore_return = return_catch_flag = 0;
|
||||
|
||||
if (interactive && print_newline)
|
||||
{
|
||||
fflush (stdout);
|
||||
fprintf (stderr, "\n");
|
||||
fflush (stderr);
|
||||
}
|
||||
|
||||
/* An interrupted `wait' command in a script does not exit the script. */
|
||||
if (interactive || (interactive_shell && !shell_initialized) ||
|
||||
(print_newline && signal_is_trapped (SIGINT)))
|
||||
jump_to_top_level (DISCARD);
|
||||
else
|
||||
jump_to_top_level (EXITPROG);
|
||||
}
|
||||
|
||||
/* This is just here to isolate the longjmp calls. */
|
||||
void
|
||||
jump_to_top_level (value)
|
||||
int value;
|
||||
{
|
||||
longjmp (top_level, value);
|
||||
}
|
||||
|
||||
sighandler
|
||||
termsig_sighandler (sig)
|
||||
int sig;
|
||||
{
|
||||
/* If we get called twice with the same signal before handling it,
|
||||
terminate right away. */
|
||||
if (
|
||||
#ifdef SIGHUP
|
||||
sig != SIGHUP &&
|
||||
#endif
|
||||
#ifdef SIGINT
|
||||
sig != SIGINT &&
|
||||
#endif
|
||||
#ifdef SIGDANGER
|
||||
sig != SIGDANGER &&
|
||||
#endif
|
||||
#ifdef SIGPIPE
|
||||
sig != SIGPIPE &&
|
||||
#endif
|
||||
#ifdef SIGALRM
|
||||
sig != SIGALRM &&
|
||||
#endif
|
||||
#ifdef SIGTERM
|
||||
sig != SIGTERM &&
|
||||
#endif
|
||||
#ifdef SIGXCPU
|
||||
sig != SIGXCPU &&
|
||||
#endif
|
||||
#ifdef SIGXFSZ
|
||||
sig != SIGXFSZ &&
|
||||
#endif
|
||||
#ifdef SIGVTALRM
|
||||
sig != SIGVTALRM &&
|
||||
#endif
|
||||
#ifdef SIGLOST
|
||||
sig != SIGLOST &&
|
||||
#endif
|
||||
#ifdef SIGUSR1
|
||||
sig != SIGUSR1 &&
|
||||
#endif
|
||||
#ifdef SIGUSR2
|
||||
sig != SIGUSR2 &&
|
||||
#endif
|
||||
sig == terminating_signal)
|
||||
terminate_immediately = 1;
|
||||
|
||||
terminating_signal = sig;
|
||||
|
||||
/* XXX - should this also trigger when interrupt_immediately is set? */
|
||||
if (terminate_immediately)
|
||||
{
|
||||
#if defined (HISTORY)
|
||||
/* XXX - will inhibit history file being written */
|
||||
# if defined (READLINE)
|
||||
if (interactive_shell == 0 || interactive == 0 || (sig != SIGHUP && sig != SIGTERM) || no_line_editing || (RL_ISSTATE (RL_STATE_READCMD) == 0))
|
||||
# endif
|
||||
history_lines_this_session = 0;
|
||||
#endif
|
||||
terminate_immediately = 0;
|
||||
termsig_handler (sig);
|
||||
}
|
||||
|
||||
#if defined (READLINE)
|
||||
/* Set the event hook so readline will call it after the signal handlers
|
||||
finish executing, so if this interrupted character input we can get
|
||||
quick response. */
|
||||
if (interactive_shell && interactive && no_line_editing == 0)
|
||||
bashline_set_event_hook ();
|
||||
#endif
|
||||
|
||||
SIGRETURN (0);
|
||||
}
|
||||
|
||||
void
|
||||
termsig_handler (sig)
|
||||
int sig;
|
||||
{
|
||||
static int handling_termsig = 0;
|
||||
|
||||
/* Simple semaphore to keep this function from being executed multiple
|
||||
times. Since we no longer are running as a signal handler, we don't
|
||||
block multiple occurrences of the terminating signals while running. */
|
||||
if (handling_termsig)
|
||||
return;
|
||||
handling_termsig = 1;
|
||||
terminating_signal = 0; /* keep macro from re-testing true. */
|
||||
|
||||
/* I don't believe this condition ever tests true. */
|
||||
if (sig == SIGINT && signal_is_trapped (SIGINT))
|
||||
run_interrupt_trap ();
|
||||
|
||||
#if defined (HISTORY)
|
||||
/* If we don't do something like this, the history will not be saved when
|
||||
an interactive shell is running in a terminal window that gets closed
|
||||
with the `close' button. We can't test for RL_STATE_READCMD because
|
||||
readline no longer handles SIGTERM synchronously. */
|
||||
if (interactive_shell && interactive && sig == SIGHUP && remember_on_history)
|
||||
maybe_save_shell_history ();
|
||||
#endif /* HISTORY */
|
||||
|
||||
#if defined (JOB_CONTROL)
|
||||
if (sig == SIGHUP && (interactive || (subshell_environment & (SUBSHELL_COMSUB|SUBSHELL_PROCSUB))))
|
||||
hangup_all_jobs ();
|
||||
end_job_control ();
|
||||
#endif /* JOB_CONTROL */
|
||||
|
||||
#if defined (PROCESS_SUBSTITUTION)
|
||||
unlink_fifo_list ();
|
||||
#endif /* PROCESS_SUBSTITUTION */
|
||||
|
||||
/* Reset execution context */
|
||||
loop_level = continuing = breaking = funcnest = 0;
|
||||
executing_list = comsub_ignore_return = return_catch_flag = 0;
|
||||
|
||||
run_exit_trap ();
|
||||
set_signal_handler (sig, SIG_DFL);
|
||||
kill (getpid (), sig);
|
||||
}
|
||||
|
||||
/* What we really do when SIGINT occurs. */
|
||||
sighandler
|
||||
sigint_sighandler (sig)
|
||||
int sig;
|
||||
{
|
||||
#if defined (MUST_REINSTALL_SIGHANDLERS)
|
||||
signal (sig, sigint_sighandler);
|
||||
#endif
|
||||
|
||||
/* interrupt_state needs to be set for the stack of interrupts to work
|
||||
right. Should it be set unconditionally? */
|
||||
if (interrupt_state == 0)
|
||||
ADDINTERRUPT;
|
||||
|
||||
if (interrupt_immediately)
|
||||
{
|
||||
interrupt_immediately = 0;
|
||||
last_command_exit_value = 128 + sig;
|
||||
throw_to_top_level ();
|
||||
}
|
||||
#if defined (READLINE)
|
||||
/* Set the event hook so readline will call it after the signal handlers
|
||||
finish executing, so if this interrupted character input we can get
|
||||
quick response. */
|
||||
else if (RL_ISSTATE (RL_STATE_SIGHANDLER))
|
||||
bashline_set_event_hook ();
|
||||
#endif
|
||||
|
||||
SIGRETURN (0);
|
||||
}
|
||||
|
||||
#if defined (SIGWINCH)
|
||||
sighandler
|
||||
sigwinch_sighandler (sig)
|
||||
int sig;
|
||||
{
|
||||
#if defined (MUST_REINSTALL_SIGHANDLERS)
|
||||
set_signal_handler (SIGWINCH, sigwinch_sighandler);
|
||||
#endif /* MUST_REINSTALL_SIGHANDLERS */
|
||||
sigwinch_received = 1;
|
||||
SIGRETURN (0);
|
||||
}
|
||||
#endif /* SIGWINCH */
|
||||
|
||||
void
|
||||
set_sigwinch_handler ()
|
||||
{
|
||||
#if defined (SIGWINCH)
|
||||
old_winch = set_signal_handler (SIGWINCH, sigwinch_sighandler);
|
||||
#endif
|
||||
}
|
||||
|
||||
void
|
||||
unset_sigwinch_handler ()
|
||||
{
|
||||
#if defined (SIGWINCH)
|
||||
set_signal_handler (SIGWINCH, old_winch);
|
||||
#endif
|
||||
}
|
||||
|
||||
sighandler
|
||||
sigterm_sighandler (sig)
|
||||
int sig;
|
||||
{
|
||||
sigterm_received = 1; /* XXX - counter? */
|
||||
SIGRETURN (0);
|
||||
}
|
||||
|
||||
/* Signal functions used by the rest of the code. */
|
||||
#if !defined (HAVE_POSIX_SIGNALS)
|
||||
|
||||
/* Perform OPERATION on NEWSET, perhaps leaving information in OLDSET. */
|
||||
sigprocmask (operation, newset, oldset)
|
||||
int operation, *newset, *oldset;
|
||||
{
|
||||
int old, new;
|
||||
|
||||
if (newset)
|
||||
new = *newset;
|
||||
else
|
||||
new = 0;
|
||||
|
||||
switch (operation)
|
||||
{
|
||||
case SIG_BLOCK:
|
||||
old = sigblock (new);
|
||||
break;
|
||||
|
||||
case SIG_SETMASK:
|
||||
old = sigsetmask (new);
|
||||
break;
|
||||
|
||||
default:
|
||||
internal_error (_("sigprocmask: %d: invalid operation"), operation);
|
||||
}
|
||||
|
||||
if (oldset)
|
||||
*oldset = old;
|
||||
}
|
||||
|
||||
#else
|
||||
|
||||
#if !defined (SA_INTERRUPT)
|
||||
# define SA_INTERRUPT 0
|
||||
#endif
|
||||
|
||||
#if !defined (SA_RESTART)
|
||||
# define SA_RESTART 0
|
||||
#endif
|
||||
|
||||
SigHandler *
|
||||
set_signal_handler (sig, handler)
|
||||
int sig;
|
||||
SigHandler *handler;
|
||||
{
|
||||
struct sigaction act, oact;
|
||||
|
||||
act.sa_handler = handler;
|
||||
act.sa_flags = 0;
|
||||
|
||||
/* XXX - bash-4.2 */
|
||||
/* We don't want a child death to interrupt interruptible system calls, even
|
||||
if we take the time to reap children */
|
||||
#if defined (SIGCHLD)
|
||||
if (sig == SIGCHLD)
|
||||
act.sa_flags |= SA_RESTART; /* XXX */
|
||||
#endif
|
||||
/* If we're installing a SIGTERM handler for interactive shells, we want
|
||||
it to be as close to SIG_IGN as possible. */
|
||||
if (sig == SIGTERM && handler == sigterm_sighandler)
|
||||
act.sa_flags |= SA_RESTART; /* XXX */
|
||||
|
||||
sigemptyset (&act.sa_mask);
|
||||
sigemptyset (&oact.sa_mask);
|
||||
sigaction (sig, &act, &oact);
|
||||
return (oact.sa_handler);
|
||||
}
|
||||
#endif /* HAVE_POSIX_SIGNALS */
|
||||
@@ -1,139 +0,0 @@
|
||||
/* sig.h -- header file for signal handler definitions. */
|
||||
|
||||
/* Copyright (C) 1994-2013 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/>.
|
||||
*/
|
||||
|
||||
/* Make sure that this is included *after* config.h! */
|
||||
|
||||
#if !defined (_SIG_H_)
|
||||
# define _SIG_H_
|
||||
|
||||
#include "stdc.h"
|
||||
|
||||
#if !defined (SIG_DFL)
|
||||
# include <signal.h>
|
||||
#endif
|
||||
|
||||
#if !defined (SIGABRT) && defined (SIGIOT)
|
||||
# define SIGABRT SIGIOT
|
||||
#endif
|
||||
|
||||
#define sighandler RETSIGTYPE
|
||||
typedef RETSIGTYPE SigHandler __P((int));
|
||||
|
||||
#if defined (VOID_SIGHANDLER)
|
||||
# define SIGRETURN(n) return
|
||||
#else
|
||||
# define SIGRETURN(n) return(n)
|
||||
#endif /* !VOID_SIGHANDLER */
|
||||
|
||||
/* Here is a definition for set_signal_handler () which simply expands to
|
||||
a call to signal () for non-Posix systems. The code for set_signal_handler
|
||||
in the Posix case resides in general.c. */
|
||||
#if !defined (HAVE_POSIX_SIGNALS)
|
||||
# define set_signal_handler(sig, handler) (SigHandler *)signal (sig, handler)
|
||||
#else
|
||||
extern SigHandler *set_signal_handler __P((int, SigHandler *)); /* in sig.c */
|
||||
#endif /* _POSIX_VERSION */
|
||||
|
||||
#if !defined (SIGCHLD) && defined (SIGCLD)
|
||||
# define SIGCHLD SIGCLD
|
||||
#endif
|
||||
|
||||
#if !defined (HAVE_POSIX_SIGNALS) && !defined (sigmask)
|
||||
# define sigmask(x) (1 << ((x)-1))
|
||||
#endif /* !HAVE_POSIX_SIGNALS && !sigmask */
|
||||
|
||||
#if !defined (HAVE_POSIX_SIGNALS)
|
||||
# if !defined (SIG_BLOCK)
|
||||
# define SIG_BLOCK 2
|
||||
# define SIG_SETMASK 3
|
||||
# endif /* SIG_BLOCK */
|
||||
|
||||
/* sigset_t defined in config.h */
|
||||
|
||||
/* Make sure there is nothing inside the signal set. */
|
||||
# define sigemptyset(set) (*(set) = 0)
|
||||
|
||||
/* Initialize the signal set to hold all signals. */
|
||||
# define sigfillset(set) (*set) = sigmask (NSIG) - 1
|
||||
|
||||
/* Add SIG to the contents of SET. */
|
||||
# define sigaddset(set, sig) *(set) |= sigmask (sig)
|
||||
|
||||
/* Delete SIG from signal set SET. */
|
||||
# define sigdelset(set, sig) *(set) &= ~sigmask (sig)
|
||||
|
||||
/* Is SIG a member of the signal set SET? */
|
||||
# define sigismember(set, sig) ((*(set) & sigmask (sig)) != 0)
|
||||
|
||||
/* Suspend the process until the reception of one of the signals
|
||||
not present in SET. */
|
||||
# define sigsuspend(set) sigpause (*(set))
|
||||
#endif /* !HAVE_POSIX_SIGNALS */
|
||||
|
||||
/* These definitions are used both in POSIX and non-POSIX implementations. */
|
||||
|
||||
#define BLOCK_SIGNAL(sig, nvar, ovar) \
|
||||
do { \
|
||||
sigemptyset (&nvar); \
|
||||
sigaddset (&nvar, sig); \
|
||||
sigemptyset (&ovar); \
|
||||
sigprocmask (SIG_BLOCK, &nvar, &ovar); \
|
||||
} while (0)
|
||||
|
||||
#define UNBLOCK_SIGNAL(ovar) sigprocmask (SIG_SETMASK, &ovar, (sigset_t *) NULL)
|
||||
|
||||
#if defined (HAVE_POSIX_SIGNALS)
|
||||
# define BLOCK_CHILD(nvar, ovar) BLOCK_SIGNAL (SIGCHLD, nvar, ovar)
|
||||
# define UNBLOCK_CHILD(ovar) UNBLOCK_SIGNAL(ovar)
|
||||
#else /* !HAVE_POSIX_SIGNALS */
|
||||
# define BLOCK_CHILD(nvar, ovar) ovar = sigblock (sigmask (SIGCHLD))
|
||||
# define UNBLOCK_CHILD(ovar) sigsetmask (ovar)
|
||||
#endif /* !HAVE_POSIX_SIGNALS */
|
||||
|
||||
/* Extern variables */
|
||||
extern sig_atomic_t sigwinch_received;
|
||||
extern sig_atomic_t sigterm_received;
|
||||
|
||||
extern int interrupt_immediately;
|
||||
extern int terminate_immediately;
|
||||
|
||||
/* Functions from sig.c. */
|
||||
extern sighandler termsig_sighandler __P((int));
|
||||
extern void termsig_handler __P((int));
|
||||
extern sighandler sigint_sighandler __P((int));
|
||||
extern void initialize_signals __P((int));
|
||||
extern void initialize_terminating_signals __P((void));
|
||||
extern void reset_terminating_signals __P((void));
|
||||
extern void top_level_cleanup __P((void));
|
||||
extern void throw_to_top_level __P((void));
|
||||
extern void jump_to_top_level __P((int)) __attribute__((__noreturn__));
|
||||
|
||||
extern sighandler sigwinch_sighandler __P((int));
|
||||
extern void set_sigwinch_handler __P((void));
|
||||
extern void unset_sigwinch_handler __P((void));
|
||||
|
||||
extern sighandler sigterm_sighandler __P((int));
|
||||
|
||||
/* Functions defined in trap.c. */
|
||||
extern SigHandler *set_sigint_handler __P((void));
|
||||
extern SigHandler *trap_to_sighandler __P((int));
|
||||
extern sighandler trap_handler __P((int));
|
||||
|
||||
#endif /* _SIG_H_ */
|
||||
@@ -1,50 +0,0 @@
|
||||
:; ./shx
|
||||
|
||||
sh:
|
||||
<&$fd ok
|
||||
nlbq Mon Aug 3 02:45:00 EDT 1992
|
||||
bang geoff
|
||||
quote 712824302
|
||||
setbq defmsgid=<1992Aug3.024502.6176@host>
|
||||
bgwait sleep done... wait 6187
|
||||
|
||||
|
||||
bash:
|
||||
<&$fd ok
|
||||
nlbq Mon Aug 3 02:45:09 EDT 1992
|
||||
bang geoff
|
||||
quote 712824311
|
||||
setbq defmsgid=<1992Aug3.024512.6212@host>
|
||||
bgwait sleep done... wait 6223
|
||||
|
||||
|
||||
ash:
|
||||
<&$fd shx1: 4: Syntax error: Bad fd number
|
||||
nlbq Mon Aug 3 02:45:19 EDT 1992
|
||||
bang geoff
|
||||
quote getdate: `"now"' not a valid date
|
||||
|
||||
setbq defmsgid=<1992Aug3.` echo 024521
|
||||
bgwait sleep done... wait 6241
|
||||
|
||||
|
||||
ksh:
|
||||
<&$fd ok
|
||||
nlbq ./shx: 6248 Memory fault - core dumped
|
||||
bang geoff
|
||||
quote getdate: `"now"' not a valid date
|
||||
|
||||
setbq defmsgid=<1992Aug3.024530.6257@host>
|
||||
bgwait no such job: 6265
|
||||
wait 6265
|
||||
sleep done...
|
||||
|
||||
zsh:
|
||||
<&$fd ok
|
||||
nlbq Mon Aug 3 02:45:36 EDT 1992
|
||||
bang shx3: event not found: /s/ [4]
|
||||
quote 712824337
|
||||
setbq defmsgid=<..6290@host>
|
||||
bgwait shx7: unmatched " [9]
|
||||
sleep done...
|
||||
:;
|
||||
@@ -1,10 +0,0 @@
|
||||
#! /bin/sh
|
||||
for cmd in sh bash ash ksh zsh
|
||||
do
|
||||
echo
|
||||
echo $cmd:
|
||||
for demo in shx?
|
||||
do
|
||||
$cmd $demo
|
||||
done
|
||||
done
|
||||
@@ -1,112 +0,0 @@
|
||||
/* trap.h -- data structures used in the trap mechanism. */
|
||||
|
||||
/* Copyright (C) 1993-2010 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/>.
|
||||
*/
|
||||
|
||||
#if !defined (_TRAP_H_)
|
||||
#define _TRAP_H_
|
||||
|
||||
#include "stdc.h"
|
||||
|
||||
#if !defined (SIG_DFL)
|
||||
#include "bashtypes.h"
|
||||
#include <signal.h>
|
||||
#endif /* SIG_DFL */
|
||||
|
||||
#if !defined (NSIG)
|
||||
#define NSIG 64
|
||||
#endif /* !NSIG */
|
||||
|
||||
#define NO_SIG -1
|
||||
#define DEFAULT_SIG SIG_DFL
|
||||
#define IGNORE_SIG SIG_IGN
|
||||
|
||||
/* Special shell trap names. */
|
||||
#define DEBUG_TRAP NSIG
|
||||
#define ERROR_TRAP NSIG+1
|
||||
#define RETURN_TRAP NSIG+2
|
||||
#define EXIT_TRAP 0
|
||||
|
||||
/* system signals plus special bash traps */
|
||||
#define BASH_NSIG NSIG+3
|
||||
|
||||
/* Flags values for decode_signal() */
|
||||
#define DSIG_SIGPREFIX 0x01 /* don't alllow `SIG' PREFIX */
|
||||
#define DSIG_NOCASE 0x02 /* case-insensitive comparison */
|
||||
|
||||
/* A value which can never be the target of a trap handler. */
|
||||
#define IMPOSSIBLE_TRAP_HANDLER (SigHandler *)initialize_traps
|
||||
|
||||
#define signal_object_p(x,f) (decode_signal (x,f) != NO_SIG)
|
||||
|
||||
#define TRAP_STRING(s) \
|
||||
(signal_is_trapped (s) && signal_is_ignored (s) == 0) ? trap_list[s] \
|
||||
: (char *)NULL
|
||||
|
||||
extern char *trap_list[];
|
||||
|
||||
/* Externally-visible functions declared in trap.c. */
|
||||
extern void initialize_traps __P((void));
|
||||
|
||||
extern void run_pending_traps __P((void));
|
||||
|
||||
extern void queue_sigchld_trap __P((int));
|
||||
extern void maybe_set_sigchld_trap __P((char *));
|
||||
extern void set_impossible_sigchld_trap __P((void));
|
||||
extern void set_sigchld_trap __P((char *));
|
||||
|
||||
extern void set_debug_trap __P((char *));
|
||||
extern void set_error_trap __P((char *));
|
||||
extern void set_return_trap __P((char *));
|
||||
|
||||
extern void set_sigint_trap __P((char *));
|
||||
extern void set_signal __P((int, char *));
|
||||
|
||||
extern void restore_default_signal __P((int));
|
||||
extern void ignore_signal __P((int));
|
||||
extern int run_exit_trap __P((void));
|
||||
extern void run_trap_cleanup __P((int));
|
||||
extern int run_debug_trap __P((void));
|
||||
extern void run_error_trap __P((void));
|
||||
extern void run_return_trap __P((void));
|
||||
|
||||
extern void free_trap_strings __P((void));
|
||||
extern void reset_signal_handlers __P((void));
|
||||
extern void restore_original_signals __P((void));
|
||||
|
||||
extern void get_original_signal __P((int));
|
||||
extern void get_all_original_signals __P((void));
|
||||
|
||||
extern char *signal_name __P((int));
|
||||
|
||||
extern int decode_signal __P((char *, int));
|
||||
extern void run_interrupt_trap __P((void));
|
||||
extern int maybe_call_trap_handler __P((int));
|
||||
extern int signal_is_special __P((int));
|
||||
extern int signal_is_trapped __P((int));
|
||||
extern int signal_is_pending __P((int));
|
||||
extern int signal_is_ignored __P((int));
|
||||
extern int signal_is_hard_ignored __P((int));
|
||||
extern void set_signal_ignored __P((int));
|
||||
extern int signal_in_progress __P((int));
|
||||
|
||||
extern int first_pending_trap __P((void));
|
||||
extern int any_signals_trapped __P((void));
|
||||
extern void check_signals_and_traps __P((void));
|
||||
|
||||
#endif /* _TRAP_H_ */
|
||||
-357
@@ -1,357 +0,0 @@
|
||||
/* unwind_prot.c - a simple unwind-protect system for internal variables */
|
||||
|
||||
/* I can't stand it anymore! Please can't we just write the
|
||||
whole Unix system in lisp or something? */
|
||||
|
||||
/* 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/>.
|
||||
*/
|
||||
|
||||
/* **************************************************************** */
|
||||
/* */
|
||||
/* Unwind Protection Scheme for Bash */
|
||||
/* */
|
||||
/* **************************************************************** */
|
||||
#include "config.h"
|
||||
|
||||
#include "bashtypes.h"
|
||||
#include "bashansi.h"
|
||||
|
||||
#if defined (HAVE_UNISTD_H)
|
||||
# include <unistd.h>
|
||||
#endif
|
||||
|
||||
#if STDC_HEADERS
|
||||
# include <stddef.h>
|
||||
#endif
|
||||
|
||||
#ifndef offsetof
|
||||
# define offsetof(TYPE, MEMBER) ((size_t) &((TYPE *)0)->MEMBER)
|
||||
#endif
|
||||
|
||||
#include "command.h"
|
||||
#include "general.h"
|
||||
#include "unwind_prot.h"
|
||||
#include "quit.h"
|
||||
#include "sig.h"
|
||||
#include "error.h" /* for internal_warning */
|
||||
|
||||
/* Structure describing a saved variable and the value to restore it to. */
|
||||
typedef struct {
|
||||
char *variable;
|
||||
int size;
|
||||
char desired_setting[1]; /* actual size is `size' */
|
||||
} SAVED_VAR;
|
||||
|
||||
/* If HEAD.CLEANUP is null, then ARG.V contains a tag to throw back to.
|
||||
If HEAD.CLEANUP is restore_variable, then SV.V contains the saved
|
||||
variable. Otherwise, call HEAD.CLEANUP (ARG.V) to clean up. */
|
||||
typedef union uwp {
|
||||
struct uwp_head {
|
||||
union uwp *next;
|
||||
Function *cleanup;
|
||||
} head;
|
||||
struct {
|
||||
struct uwp_head uwp_head;
|
||||
char *v;
|
||||
} arg;
|
||||
struct {
|
||||
struct uwp_head uwp_head;
|
||||
SAVED_VAR v;
|
||||
} sv;
|
||||
} UNWIND_ELT;
|
||||
|
||||
|
||||
static void without_interrupts __P((VFunction *, char *, char *));
|
||||
static void unwind_frame_discard_internal __P((char *, char *));
|
||||
static void unwind_frame_run_internal __P((char *, char *));
|
||||
static void add_unwind_protect_internal __P((Function *, char *));
|
||||
static void remove_unwind_protect_internal __P((char *, char *));
|
||||
static void run_unwind_protects_internal __P((char *, char *));
|
||||
static void clear_unwind_protects_internal __P((char *, char *));
|
||||
static inline void restore_variable __P((SAVED_VAR *));
|
||||
static void unwind_protect_mem_internal __P((char *, char *));
|
||||
|
||||
static UNWIND_ELT *unwind_protect_list = (UNWIND_ELT *)NULL;
|
||||
|
||||
#define uwpalloc(elt) (elt) = (UNWIND_ELT *)xmalloc (sizeof (UNWIND_ELT))
|
||||
#define uwpfree(elt) free(elt)
|
||||
|
||||
/* Run a function without interrupts. This relies on the fact that the
|
||||
FUNCTION cannot change the value of interrupt_immediately. (I.e., does
|
||||
not call QUIT (). */
|
||||
static void
|
||||
without_interrupts (function, arg1, arg2)
|
||||
VFunction *function;
|
||||
char *arg1, *arg2;
|
||||
{
|
||||
int old_interrupt_immediately;
|
||||
|
||||
old_interrupt_immediately = interrupt_immediately;
|
||||
interrupt_immediately = 0;
|
||||
|
||||
(*function)(arg1, arg2);
|
||||
|
||||
interrupt_immediately = old_interrupt_immediately;
|
||||
}
|
||||
|
||||
/* Start the beginning of a region. */
|
||||
void
|
||||
begin_unwind_frame (tag)
|
||||
char *tag;
|
||||
{
|
||||
add_unwind_protect ((Function *)NULL, tag);
|
||||
}
|
||||
|
||||
/* Discard the unwind protects back to TAG. */
|
||||
void
|
||||
discard_unwind_frame (tag)
|
||||
char *tag;
|
||||
{
|
||||
if (unwind_protect_list)
|
||||
without_interrupts (unwind_frame_discard_internal, tag, (char *)NULL);
|
||||
}
|
||||
|
||||
/* Run the unwind protects back to TAG. */
|
||||
void
|
||||
run_unwind_frame (tag)
|
||||
char *tag;
|
||||
{
|
||||
if (unwind_protect_list)
|
||||
without_interrupts (unwind_frame_run_internal, tag, (char *)NULL);
|
||||
}
|
||||
|
||||
/* Add the function CLEANUP with ARG to the list of unwindable things. */
|
||||
void
|
||||
add_unwind_protect (cleanup, arg)
|
||||
Function *cleanup;
|
||||
char *arg;
|
||||
{
|
||||
without_interrupts (add_unwind_protect_internal, (char *)cleanup, arg);
|
||||
}
|
||||
|
||||
/* Remove the top unwind protect from the list. */
|
||||
void
|
||||
remove_unwind_protect ()
|
||||
{
|
||||
if (unwind_protect_list)
|
||||
without_interrupts
|
||||
(remove_unwind_protect_internal, (char *)NULL, (char *)NULL);
|
||||
}
|
||||
|
||||
/* Run the list of cleanup functions in unwind_protect_list. */
|
||||
void
|
||||
run_unwind_protects ()
|
||||
{
|
||||
if (unwind_protect_list)
|
||||
without_interrupts
|
||||
(run_unwind_protects_internal, (char *)NULL, (char *)NULL);
|
||||
}
|
||||
|
||||
/* Erase the unwind-protect list. If flags is 1, free the elements. */
|
||||
void
|
||||
clear_unwind_protect_list (flags)
|
||||
int flags;
|
||||
{
|
||||
char *flag;
|
||||
|
||||
if (unwind_protect_list)
|
||||
{
|
||||
flag = flags ? "" : (char *)NULL;
|
||||
without_interrupts
|
||||
(clear_unwind_protects_internal, flag, (char *)NULL);
|
||||
}
|
||||
}
|
||||
|
||||
int
|
||||
have_unwind_protects ()
|
||||
{
|
||||
return (unwind_protect_list != 0);
|
||||
}
|
||||
|
||||
/* **************************************************************** */
|
||||
/* */
|
||||
/* The Actual Functions */
|
||||
/* */
|
||||
/* **************************************************************** */
|
||||
|
||||
static void
|
||||
add_unwind_protect_internal (cleanup, arg)
|
||||
Function *cleanup;
|
||||
char *arg;
|
||||
{
|
||||
UNWIND_ELT *elt;
|
||||
|
||||
uwpalloc (elt);
|
||||
elt->head.next = unwind_protect_list;
|
||||
elt->head.cleanup = cleanup;
|
||||
elt->arg.v = arg;
|
||||
unwind_protect_list = elt;
|
||||
}
|
||||
|
||||
static void
|
||||
remove_unwind_protect_internal (ignore1, ignore2)
|
||||
char *ignore1, *ignore2;
|
||||
{
|
||||
UNWIND_ELT *elt;
|
||||
|
||||
elt = unwind_protect_list;
|
||||
if (elt)
|
||||
{
|
||||
unwind_protect_list = unwind_protect_list->head.next;
|
||||
uwpfree (elt);
|
||||
}
|
||||
}
|
||||
|
||||
static void
|
||||
run_unwind_protects_internal (ignore1, ignore2)
|
||||
char *ignore1, *ignore2;
|
||||
{
|
||||
unwind_frame_run_internal ((char *) NULL, (char *) NULL);
|
||||
}
|
||||
|
||||
static void
|
||||
clear_unwind_protects_internal (flag, ignore)
|
||||
char *flag, *ignore;
|
||||
{
|
||||
if (flag)
|
||||
{
|
||||
while (unwind_protect_list)
|
||||
remove_unwind_protect_internal ((char *)NULL, (char *)NULL);
|
||||
}
|
||||
unwind_protect_list = (UNWIND_ELT *)NULL;
|
||||
}
|
||||
|
||||
static void
|
||||
unwind_frame_discard_internal (tag, ignore)
|
||||
char *tag, *ignore;
|
||||
{
|
||||
UNWIND_ELT *elt;
|
||||
int found;
|
||||
|
||||
found = 0;
|
||||
while (elt = unwind_protect_list)
|
||||
{
|
||||
unwind_protect_list = unwind_protect_list->head.next;
|
||||
if (elt->head.cleanup == 0 && (STREQ (elt->arg.v, tag)))
|
||||
{
|
||||
uwpfree (elt);
|
||||
found = 1;
|
||||
break;
|
||||
}
|
||||
else
|
||||
uwpfree (elt);
|
||||
}
|
||||
|
||||
if (found == 0)
|
||||
internal_warning ("unwind_frame_discard: %s: frame not found", tag);
|
||||
}
|
||||
|
||||
/* Restore the value of a variable, based on the contents of SV.
|
||||
sv->desired_setting is a block of memory SIZE bytes long holding the
|
||||
value itself. This block of memory is copied back into the variable. */
|
||||
static inline void
|
||||
restore_variable (sv)
|
||||
SAVED_VAR *sv;
|
||||
{
|
||||
FASTCOPY (sv->desired_setting, sv->variable, sv->size);
|
||||
}
|
||||
|
||||
static void
|
||||
unwind_frame_run_internal (tag, ignore)
|
||||
char *tag, *ignore;
|
||||
{
|
||||
UNWIND_ELT *elt;
|
||||
int found;
|
||||
|
||||
found = 0;
|
||||
while (elt = unwind_protect_list)
|
||||
{
|
||||
unwind_protect_list = elt->head.next;
|
||||
|
||||
/* If tag, then compare. */
|
||||
if (elt->head.cleanup == 0)
|
||||
{
|
||||
if (tag && STREQ (elt->arg.v, tag))
|
||||
{
|
||||
uwpfree (elt);
|
||||
found = 1;
|
||||
break;
|
||||
}
|
||||
}
|
||||
else
|
||||
{
|
||||
if (elt->head.cleanup == (Function *) restore_variable)
|
||||
restore_variable (&elt->sv.v);
|
||||
else
|
||||
(*(elt->head.cleanup)) (elt->arg.v);
|
||||
}
|
||||
|
||||
uwpfree (elt);
|
||||
}
|
||||
if (tag && found == 0)
|
||||
internal_warning ("unwind_frame_run: %s: frame not found", tag);
|
||||
}
|
||||
|
||||
static void
|
||||
unwind_protect_mem_internal (var, psize)
|
||||
char *var;
|
||||
char *psize;
|
||||
{
|
||||
int size, allocated;
|
||||
UNWIND_ELT *elt;
|
||||
|
||||
size = *(int *) psize;
|
||||
allocated = size + offsetof (UNWIND_ELT, sv.v.desired_setting[0]);
|
||||
elt = (UNWIND_ELT *)xmalloc (allocated);
|
||||
elt->head.next = unwind_protect_list;
|
||||
elt->head.cleanup = (Function *) restore_variable;
|
||||
elt->sv.v.variable = var;
|
||||
elt->sv.v.size = size;
|
||||
FASTCOPY (var, elt->sv.v.desired_setting, size);
|
||||
unwind_protect_list = elt;
|
||||
}
|
||||
|
||||
/* Save the value of a variable so it will be restored when unwind-protects
|
||||
are run. VAR is a pointer to the variable. SIZE is the size in
|
||||
bytes of VAR. */
|
||||
void
|
||||
unwind_protect_mem (var, size)
|
||||
char *var;
|
||||
int size;
|
||||
{
|
||||
without_interrupts (unwind_protect_mem_internal, var, (char *) &size);
|
||||
}
|
||||
|
||||
#if defined (DEBUG)
|
||||
#include <stdio.h>
|
||||
|
||||
void
|
||||
print_unwind_protect_tags ()
|
||||
{
|
||||
UNWIND_ELT *elt;
|
||||
|
||||
elt = unwind_protect_list;
|
||||
while (elt)
|
||||
{
|
||||
unwind_protect_list = unwind_protect_list->head.next;
|
||||
if (elt->head.cleanup == 0)
|
||||
fprintf(stderr, "tag: %s\n", elt->arg.v);
|
||||
elt = unwind_protect_list;
|
||||
}
|
||||
}
|
||||
#endif
|
||||
-5240
File diff suppressed because it is too large
Load Diff
Reference in New Issue
Block a user