| /* 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, 59 Temple Place, Suite 330, Boston, MA 02111 USA. */ |
| |
| #ifdef HAVE_CONFIG_H |
| #include "config.h" |
| #endif |
| |
| #include "bashjmp.h" |
| |
| #include "command.h" |
| #include "syntax.h" |
| #include "general.h" |
| #include "error.h" |
| #include "variables.h" |
| #include "arrayfunc.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" |
| #include "version.h" |
| |
| extern int EOF_Reached; |
| |
| #define NO_PIPE -1 |
| #define REDIRECT_BOTH -2 |
| |
| #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 */ |
| |
| /* 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; |
| extern int interactive, interactive_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 { |
| int 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; |
| |
| /* Force gcc to not clobber X on a longjmp(). Old versions of gcc mangle |
| this badly. */ |
| #if __GNUC__ == 2 && __GNUC_MINOR__ > 8 |
| # define USE_VAR(x) ((void) &(x)) |
| #else |
| # define USE_VAR(x) |
| #endif |