1/*********************************************************************** 2* * 3* This software is part of the ast package * 4* Copyright (c) 1982-2012 AT&T Intellectual Property * 5* and is licensed under the * 6* Eclipse Public License, Version 1.0 * 7* by AT&T Intellectual Property * 8* * 9* A copy of the License is available at * 10* http://www.eclipse.org/org/documents/epl-v10.html * 11* (with md5 checksum b35adb5213ca9657e911e9befb180842) * 12* * 13* Information and Software Systems Research * 14* AT&T Research * 15* Florham Park NJ * 16* * 17* David Korn <dgk@research.att.com> * 18* * 19***********************************************************************/ 20#pragma prototyped 21#ifndef SH_INTERACTIVE 22/* 23 * David Korn 24 * AT&T Labs 25 * 26 * Interface definitions for shell command language 27 * 28 */ 29 30#define SH_VERSION 20071012 31 32#include <ast.h> 33#include <cdt.h> 34#ifdef _SH_PRIVATE 35# include "name.h" 36#else 37# include <nval.h> 38#endif /* _SH_PRIVATE */ 39 40#undef NOT_USED 41#define NOT_USED(x) (&x,1) 42 43/* options */ 44typedef struct 45{ 46 unsigned long v[4]; 47} 48Shopt_t; 49 50typedef struct Shell_s Shell_t; 51 52#include <shcmd.h> 53 54typedef void (*Shinit_f)(Shell_t*, int); 55#ifndef SH_wait_f_defined 56 typedef int (*Shwait_f)(int, long, int); 57# define SH_wait_f_defined 58#endif 59 60union Shnode_u; 61typedef union Shnode_u Shnode_t; 62 63#define SH_CFLAG 0 64#define SH_HISTORY 1 /* used also as a state */ 65#define SH_ERREXIT 2 /* used also as a state */ 66#define SH_VERBOSE 3 /* used also as a state */ 67#define SH_MONITOR 4 /* used also as a state */ 68#define SH_INTERACTIVE 5 /* used also as a state */ 69#define SH_RESTRICTED 6 70#define SH_XTRACE 7 71#define SH_KEYWORD 8 72#define SH_NOUNSET 9 73#define SH_NOGLOB 10 74#define SH_ALLEXPORT 11 75#define SH_PFSH 12 76#define SH_IGNOREEOF 13 77#define SH_NOCLOBBER 14 78#define SH_MARKDIRS 15 79#define SH_BGNICE 16 80#define SH_VI 17 81#define SH_VIRAW 18 82#define SH_TFLAG 19 83#define SH_TRACKALL 20 84#define SH_SFLAG 21 85#define SH_NOEXEC 22 86#define SH_GMACS 24 87#define SH_EMACS 25 88#define SH_PRIVILEGED 26 89#define SH_SUBSHARE 27 /* subshell shares state with parent */ 90#define SH_NOLOG 28 91#define SH_NOTIFY 29 92#define SH_DICTIONARY 30 93#define SH_PIPEFAIL 32 94#define SH_GLOBSTARS 33 95#define SH_XARGS 34 96#define SH_RC 35 97#define SH_SHOWME 36 98#define SH_LETOCTAL 37 99 100/* 101 * passed as flags to builtins in Nambltin_t struct when BLT_OPTIM is on 102 */ 103#define SH_BEGIN_OPTIM 0x1 104#define SH_END_OPTIM 0x2 105 106/* The following type is used for error messages */ 107 108/* error messages */ 109extern const char e_defpath[]; 110extern const char e_found[]; 111extern const char e_nospace[]; 112extern const char e_format[]; 113extern const char e_number[]; 114extern const char e_restricted[]; 115extern const char e_recursive[]; 116extern char e_version[]; 117 118typedef struct sh_scope 119{ 120 struct sh_scope *par_scope; 121 int argc; 122 char **argv; 123 char *cmdname; 124 char *filename; 125 char *funname; 126 int lineno; 127 Dt_t *var_tree; 128 struct sh_scope *self; 129} Shscope_t; 130 131/* 132 * Saves the state of the shell 133 */ 134 135struct Shell_s 136{ 137 Shopt_t options; /* set -o options */ 138 Dt_t *var_tree; /* for shell variables */ 139 Dt_t *fun_tree; /* for shell functions */ 140 Dt_t *alias_tree; /* for alias names */ 141 Dt_t *bltin_tree; /* for builtin commands */ 142 Shscope_t *topscope; /* pointer to top-level scope */ 143 int inlineno; /* line number of current input file */ 144 int exitval; /* most recent exit value */ 145 unsigned char trapnote; /* set when trap/signal is pending */ 146 char shcomp; /* set when runing shcomp */ 147 short subshell; /* set for virtual subshell */ 148#ifdef _SH_PRIVATE 149 _SH_PRIVATE 150#endif /* _SH_PRIVATE */ 151}; 152 153/* flags for sh_parse */ 154#define SH_NL 1 /* Treat new-lines as ; */ 155#define SH_EOF 2 /* EOF causes syntax error */ 156 157/* symbolic values for sh_iogetiop */ 158#define SH_IOCOPROCESS (-2) 159#define SH_IOHISTFILE (-3) 160 161#include <cmd.h> 162 163/* symbolic value for sh_fdnotify */ 164#define SH_FDCLOSE (-1) 165 166#undef getenv /* -lshell provides its own */ 167 168#if defined(__EXPORT__) && defined(_DLL) 169# ifdef _BLD_shell 170# define extern __EXPORT__ 171# endif /* _BLD_shell */ 172#endif /* _DLL */ 173 174extern Dt_t *sh_bltin_tree(void); 175extern void sh_subfork(void); 176extern Shell_t *sh_init(int,char*[],Shinit_f); 177extern int sh_reinit(char*[]); 178extern int sh_eval(Sfio_t*,int); 179extern void sh_delay(double); 180extern void *sh_parse(Shell_t*, Sfio_t*,int); 181extern int sh_trap(const char*,int); 182extern int sh_fun(Namval_t*,Namval_t*, char*[]); 183extern int sh_funscope(int,char*[],int(*)(void*),void*,int); 184extern Sfio_t *sh_iogetiop(int,int); 185extern int sh_main(int, char*[], Shinit_f); 186extern int sh_run(int, char*[]); 187extern void sh_menu(Sfio_t*, int, char*[]); 188extern Namval_t *sh_addbuiltin(const char*, int(*)(int, char*[],Shbltin_t*), void*); 189extern char *sh_fmtq(const char*); 190extern char *sh_fmtqf(const char*, int, int); 191extern Sfdouble_t sh_strnum(const char*, char**, int); 192extern int sh_access(const char*,int); 193extern int sh_close(int); 194extern int sh_chdir(const char*); 195extern int sh_dup(int); 196extern void sh_exit(int); 197extern int sh_fchdir(int); 198extern int sh_fcntl(int, int, ...); 199extern Sfio_t *sh_fd2sfio(int); 200extern int (*sh_fdnotify(int(*)(int,int)))(int,int); 201extern Shell_t *sh_getinterp(void); 202extern int sh_open(const char*, int, ...); 203extern int sh_openmax(void); 204extern Sfio_t *sh_pathopen(const char*); 205extern ssize_t sh_read(int, void*, size_t); 206extern ssize_t sh_write(int, const void*, size_t); 207extern off_t sh_seek(int, off_t, int); 208extern int sh_pipe(int[]); 209extern mode_t sh_umask(mode_t); 210extern void *sh_waitnotify(Shwait_f); 211extern Shscope_t *sh_getscope(int,int); 212extern Shscope_t *sh_setscope(Shscope_t*); 213extern void sh_sigcheck(Shell_t*); 214extern unsigned long sh_isoption(int); 215extern unsigned long sh_onoption(int); 216extern unsigned long sh_offoption(int); 217extern int sh_waitsafe(void); 218extern int sh_exec(const Shnode_t*,int); 219 220/* 221 * direct access to sh is obsolete, use sh_getinterp() instead 222 */ 223#if !defined(_SH_PRIVATE) && defined(__IMPORT__) && !defined(_BLD_shell) 224 extern __IMPORT__ Shell_t sh; 225#else 226 extern Shell_t sh; 227#endif 228 229#ifdef _DLL 230# undef extern 231#endif /* _DLL */ 232 233#define chdir(a) sh_chdir(a) 234#define fchdir(a) sh_fchdir(a) 235#ifndef _SH_PRIVATE 236# define access(a,b) sh_access(a,b) 237# define close(a) sh_close(a) 238# define exit(a) sh_exit(a) 239# define fcntl(a,b,c) sh_fcntl(a,b,c) 240# define pipe(a) sh_pipe(a) 241# define read(a,b,c) sh_read(a,b,c) 242# define write(a,b,c) sh_write(a,b,c) 243# define umask(a) sh_umask(a) 244# define dup sh_dup 245# if _lib_lseek64 246# define open64 sh_open 247# define lseek64 sh_seek 248# else 249# define open sh_open 250# define lseek sh_seek 251# endif 252#endif /* !_SH_PRIVATE */ 253 254#define SH_SIGSET 4 255#define SH_EXITSIG 0400 /* signal exit bit */ 256#define SH_EXITMASK (SH_EXITSIG-1) /* normal exit status bits */ 257#define SH_RUNPROG -1022 /* needs to be negative and < 256 */ 258 259#endif /* SH_INTERACTIVE */ 260