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. */
31 #include "variables.h"
32 #include "arrayfunc.h"
35 #include "unwind_prot.h"
36 #include "dispose_cmd.h"
41 #include "pathnames.h"
45 extern int EOF_Reached;
48 #define REDIRECT_BOTH -2
50 #define NO_VARIABLE -1
52 /* Values that can be returned by execute_command (). */
53 #define EXECUTION_FAILURE 1
54 #define EXECUTION_SUCCESS 0
56 /* Usage messages by builtins result in a return status of 2. */
59 /* Special exit statuses used by the shell, internally and externally. */
60 #define EX_BINARY_FILE 126
62 #define EX_NOINPUT 126
63 #define EX_NOTFOUND 127
65 #define EX_SHERRBASE 256 /* all special error values are > this. */
67 #define EX_BADSYNTAX 257 /* shell syntax error */
68 #define EX_USAGE 258 /* syntax error in usage */
69 #define EX_REDIRFAIL 259 /* redirection failed */
70 #define EX_BADASSIGN 260 /* variable assignment error */
71 #define EX_EXPFAIL 261 /* word expansion failed */
73 /* Flag values that control parameter pattern substitution. */
78 #define MATCH_TYPEMASK 0x3
80 #define MATCH_GLOBREP 0x10
81 #define MATCH_QUOTED 0x20
83 /* Some needed external declarations. */
84 extern char **shell_environment;
85 extern WORD_LIST *rest_of_args;
87 /* Generalized global variables. */
88 extern int executing, login_shell;
89 extern int interactive, interactive_shell;
90 extern int startup_state;
92 /* Structure to pass around that holds a bitmap of file descriptors
93 to close, and the size of that structure. Used in execute_cmd.c. */
99 #define FD_BITMAP_SIZE 32
101 #define CTLESC '\001'
102 #define CTLNUL '\177'
104 /* Information about the current user. */
109 char *shell; /* shell from the password file */
113 extern struct user_info current_user;
115 /* Force gcc to not clobber X on a longjmp(). Old versions of gcc mangle
117 #if (__GNUC__ > 2) || (__GNUC__ == 2 && __GNUC_MINOR__ > 8)
118 # define USE_VAR(x) ((void) &(x))