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/* shell.h -- The data structures used by the shell */
/* 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. */
#include "config.h"
#include "bashjmp.h"
#include "command.h"
#include "general.h"
#include "error.h"
#include "variables.h"
#include "quit.h"
#include "maxpath.h"
#include "unwind_prot.h"
#include "dispose_cmd.h"
#include "make_cmd.h"
#include "subst.h"
#include "sig.h"
#include "pathnames.h"
#include "externs.h"
extern int EOF_Reached;
#define NO_PIPE -1
#define REDIRECT_BOTH -2
#define IS_DESCRIPTOR -1
#define NO_VARIABLE -1
/* Values that can be returned by execute_command (). */
#define EXECUTION_FAILURE 1
#define EXECUTION_SUCCESS 0
/* Usage messages by builtins result in a return status of 2. */
#define EX_BADUSAGE 2
/* Special exit statuses used by the shell, internally and externally. */
#define EX_BINARY_FILE 126
#define EX_NOEXEC 126
#define EX_NOINPUT 126
#define EX_NOTFOUND 127
#define EX_SHERRBASE 256 /* all special error values are > this. */
#define EX_BADSYNTAX 257 /* shell syntax error */
#define EX_USAGE 258 /* syntax error in usage */
#define EX_REDIRFAIL 259 /* redirection failed */
#define EX_BADASSIGN 260 /* variable assignment error */
#define EX_EXPFAIL 261 /* word expansion failed */
/* The list of characters that are quoted in double-quotes with a
backslash. Other characters following a backslash cause nothing
special to happen. */
#define slashify_in_quotes "\\`$\"\n"
#define slashify_in_here_document "\\`$"
/* Constants which specify how to handle backslashes and quoting in
expand_word_internal (). Q_DOUBLE_QUOTES means to use the function
slashify_in_quotes () to decide whether the backslash should be
retained. Q_HERE_DOCUMENT means slashify_in_here_document () to
decide whether to retain the backslash. Q_KEEP_BACKSLASH means
to unconditionally retain the backslash. */
#define Q_DOUBLE_QUOTES 0x1
#define Q_HERE_DOCUMENT 0x2
#define Q_KEEP_BACKSLASH 0x4
#define Q_NOQUOTE 0x8
#define Q_QUOTED 0x10
#define Q_ADDEDQUOTES 0x20
#define Q_QUOTEDNULL 0x40
/* Flag values that control parameter pattern substitution. */
#define MATCH_ANY 0x0
#define MATCH_BEG 0x1
#define MATCH_END 0x2
#define MATCH_TYPEMASK 0x3
#define MATCH_GLOBREP 0x10
#define MATCH_QUOTED 0x20
/* Some needed external declarations. */
extern char **shell_environment;
extern WORD_LIST *rest_of_args;
/* Generalized global variables. */
extern int executing, login_shell;
/* Structure to pass around that holds a bitmap of file descriptors
to close, and the size of that structure. Used in execute_cmd.c. */
struct fd_bitmap {
long size;
char *bitmap;
};
#define FD_BITMAP_SIZE 32
#define CTLESC '\001'
#define CTLNUL '\177'
/* Information about the current user. */
struct user_info {
uid_t uid, euid;
gid_t gid, egid;
char *user_name;
char *shell; /* shell from the password file */
char *home_dir;
};
extern struct user_info current_user;
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