/* 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 "ocache.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; extern int startup_state; /* 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__ == 2 && __GNUC_MINOR__ > 8) # define USE_VAR(x) ((void) &(x)) #else # define USE_VAR(x) #endif