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1 /* shell.h -- The data structures used by the shell */
3 /* Copyright (C) 1993 Free Software Foundation, Inc.
5 This file is part of GNU Bash, the Bourne Again SHell.
7 Bash is free software; you can redistribute it and/or modify it under
8 the terms of the GNU General Public License as published by the Free
9 Software Foundation; either version 2, or (at your option) any later
12 Bash is distributed in the hope that it will be useful, but WITHOUT ANY
13 WARRANTY; without even the implied warranty of MERCHANTABILITY or
14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
17 You should have received a copy of the GNU General Public License along
18 with Bash; see the file COPYING. If not, write to the Free Software
19 Foundation, 59 Temple Place, Suite 330, Boston, MA 02111 USA. */
29 #include "variables.h"
32 #include "unwind_prot.h"
33 #include "dispose_cmd.h"
37 #include "pathnames.h"
40 extern int EOF_Reached
;
43 #define REDIRECT_BOTH -2
44 #define IS_DESCRIPTOR -1
46 #define NO_VARIABLE -1
48 /* Values that can be returned by execute_command (). */
49 #define EXECUTION_FAILURE 1
50 #define EXECUTION_SUCCESS 0
52 /* Usage messages by builtins result in a return status of 2. */
55 /* Special exit statuses used by the shell, internally and externally. */
56 #define EX_BINARY_FILE 126
58 #define EX_NOINPUT 126
59 #define EX_NOTFOUND 127
61 #define EX_SHERRBASE 256 /* all special error values are > this. */
63 #define EX_BADSYNTAX 257 /* shell syntax error */
64 #define EX_USAGE 258 /* syntax error in usage */
65 #define EX_REDIRFAIL 259 /* redirection failed */
66 #define EX_BADASSIGN 260 /* variable assignment error */
67 #define EX_EXPFAIL 261 /* word expansion failed */
69 /* Flag values that control parameter pattern substitution. */
74 #define MATCH_TYPEMASK 0x3
76 #define MATCH_GLOBREP 0x10
77 #define MATCH_QUOTED 0x20
79 /* Some needed external declarations. */
80 extern char **shell_environment
;
81 extern WORD_LIST
*rest_of_args
;
83 /* Generalized global variables. */
84 extern int executing
, login_shell
;
86 /* Structure to pass around that holds a bitmap of file descriptors
87 to close, and the size of that structure. Used in execute_cmd.c. */
93 #define FD_BITMAP_SIZE 32
98 /* Information about the current user. */
103 char *shell
; /* shell from the password file */
107 extern struct user_info current_user
;