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/*******************************************************************
* *
* This software is part of the ast package *
* Copyright (c) 1982-2001 AT&T Corp. *
* and it may only be used by you under license from *
* AT&T Corp. ("AT&T") *
* A copy of the Source Code Agreement is available *
* at the AT&T Internet web site URL *
* *
* http://www.research.att.com/sw/license/ast-open.html *
* *
* If you have copied this software without agreeing *
* to the terms of the license you are infringing on *
* the license and copyright and are violating *
* AT&T's intellectual property rights. *
* *
* This software was created by the *
* Network Services Research Center *
* AT&T Labs Research *
* Florham Park NJ *
* *
* David Korn <dgk@research.att.com> *
*******************************************************************/
#pragma prototyped
#ifndef SH_INTERACTIVE
/*
* David Korn
* AT&T Labs
*
* Interface definitions for shell command language
*
*/
#include <cmd.h>
#include <cdt.h>
#include <history.h>
#ifdef _SH_PRIVATE
# include "name.h"
#else
# include <nval.h>
#endif /* _SH_PRIVATE */
#define SH_VERSION 20010901
/*
* The following will disappear in a future release so change all sh_fun
* calls to use three arguments and sh_waitnotify specify a function
* that will be called with three arguments. The third argument to
* the waitnotify function will 0 for input, 1 for output.
*/
#define sh_fun _sh_fun
#define sh_waitnotify _sh_waitnotify
#undef NOT_USED
#define NOT_USED(x) (&x,1)
/* options */
typedef unsigned long Shopt_t;
#define SH_CFLAG (1<<0)
#define SH_HISTORY (1<<1) /* used also as a state */
#define SH_ERREXIT (1<<2) /* used also as a state */
#define SH_VERBOSE (1<<3) /* used also as a state */
#define SH_MONITOR (1<<4)/* used also as a state */
#define SH_INTERACTIVE (1<<5) /* used also as a state */
#define SH_RESTRICTED (1L<<6)
#define SH_XTRACE (1L<<7)
#define SH_KEYWORD (1L<<8)
#define SH_NOUNSET (1L<<9)
#define SH_NOGLOB (1L<<10)
#define SH_ALLEXPORT (1L<<11)
#define SH_IGNOREEOF (1L<<13)
#define SH_NOCLOBBER (1L<<14)
#define SH_MARKDIRS (1L<<15)
#define SH_BGNICE (1L<<16)
#define SH_VI (1L<<17)
#define SH_VIRAW (1L<<18)
#define SH_TFLAG (1L<<19)
#define SH_TRACKALL (1L<<20)
#define SH_SFLAG (1L<<21)
#define SH_NOEXEC (1L<<22)
#define SH_GMACS (1L<<24)
#define SH_EMACS (1L<<25)
#define SH_PRIVILEGED (1L<<26)
#define SH_SUBSHARE (1L<<27) /* subshell shares state with parent */
#define SH_NOLOG (1L<<28)
#define SH_NOTIFY (1L<<29)
#define SH_DICTIONARY (1L<<30)
#define SH_PIPEFAIL (1L<<31)
/* The following type is used for error messages */
/* error messages */
extern const char e_defpath[];
extern const char e_found[];
extern const char e_nospace[];
extern const char e_format[];
extern const char e_number[];
extern const char e_restricted[];
extern const char e_recursive[];
extern char e_version[];
typedef struct sh_scope
{
struct sh_scope *par_scope;
int argc;
char **argv;
char *cmdname;
Dt_t *var_tree;
} Shscope_t;
/*
* Saves the state of the shell
*/
typedef struct sh_static
{
int inlineno; /* line number of current input file */
Shopt_t options; /* set -o options */
Dt_t *var_tree; /* for shell variables */
Dt_t *fun_tree; /* for shell functions */
Dt_t *alias_tree; /* for alias names */
Dt_t *bltin_tree; /* for builtin commands */
int exitval; /* most recent exit value */
Sfio_t **sftable; /* pointer to stream pointer table */
unsigned char *fdstatus; /* pointer to file status table */
const char *pwd; /* present working directory */
History_t *hist_ptr; /* history file pointer */
unsigned char trapnote; /* set when trap/signal is pending */
char subshell; /* set for virtual subshell */
char universe;
int (*waitevent)(int,long,int);
Shscope_t *topscope; /* pointer to top-level scope */
void *jmpbuffer; /* setjmp buffer pointer */
#ifdef _SH_PRIVATE
_SH_PRIVATE
#endif /* _SH_PRIVATE */
} Shell_t;
/* flags for sh_parse */
#define SH_NL 1 /* Treat new-lines as ; */
#define SH_EOF 2 /* EOF causes syntax error */
/* symbolic values for sh_iogetiop */
#define SH_IOCOPROCESS (-2)
#define SH_IOHISTFILE (-3)
/* symbolic value for sh_fdnotify */
#define SH_FDCLOSE (-1)
#if defined(__EXPORT__) && defined(_DLL)
# ifdef _BLD_shell
# define extern __EXPORT__
# endif /* _BLD_shell */
#endif /* _DLL */
extern Dt_t *sh_bltin_tree(void);
extern void sh_subfork(void);
extern int sh_init(int,char*[],void(*)(int));
extern int sh_reinit(char*[]);
extern int sh_eval(Sfio_t*,int);
extern void sh_delay(double);
extern void *sh_parse(Sfio_t*,int);
extern int sh_trap(const char*,int);
extern int sh_fun(Namval_t*,Namval_t*, char*[]);
extern int sh_funscope(int,char*[],int(*)(void*),void*,int);
extern Sfio_t *sh_iogetiop(int,int);
extern int sh_main(int, char*[], void(*)(int));
extern void sh_menu(Sfio_t*, int, char*[]);
extern Namval_t *sh_addbuiltin(const char*, int(*)(int, char*[],void*), void*);
extern char *sh_fmtq(const char*);
extern double sh_strnum(const char*, char**, int);
extern int sh_access(const char*,int);
extern int sh_close(int);
extern int sh_dup(int);
extern void sh_exit(int);
extern int sh_fcntl(int, int, ...);
extern Sfio_t *sh_fd2sfio(int);
extern int (*sh_fdnotify(int(*)(int,int)))(int,int);
extern Shell_t *sh_getinterp(void);
extern int sh_open(const char*, int, ...);
extern int sh_openmax(void);
extern Sfio_t *sh_pathopen(const char*);
extern ssize_t sh_read(int, void*, size_t);
extern ssize_t sh_write(int, const void*, size_t);
extern off_t sh_seek(int, off_t, int);
extern int sh_pipe(int[]);
extern void *sh_waitnotify(int(*)(int,long,int));
extern Shscope_t *sh_getscope(int,int);
extern Shscope_t *sh_setscope(Shscope_t*);
extern void sh_sigcheck(void);
extern Shopt_t sh_isoption(Shopt_t);
extern Shopt_t sh_onoption(Shopt_t);
extern Shopt_t sh_offoption(Shopt_t);
#ifdef SHOPT_DYNAMIC
extern void **sh_getliblist(void);
#endif /* SHOPT_DYNAMIC */
/*
* direct access to sh is obsolete, use sh_getinterp() instead
*/
#if !defined(_SH_PRIVATE) && defined(__IMPORT__) && !defined(_BLD_shell)
__IMPORT__ Shell_t sh;
#else
extern Shell_t sh;
#endif
#ifdef _DLL
# undef extern
#endif /* _DLL */
#ifndef _SH_PRIVATE
# define access(a,b) sh_access(a,b)
# define close(a) sh_close(a)
# define exit(a) sh_exit(a)
# define fcntl(a,b,c) sh_fcntl(a,b,c)
# define pipe(a) sh_pipe(a)
# define read(a,b,c) sh_read(a,b,c)
# define write(a,b,c) sh_write(a,b,c)
# define dup sh_dup
# if _lib_lseek64
# define open64 sh_open
# define lseek64 sh_seek
# else
# define open sh_open
# define lseek sh_seek
# endif
#endif /* !_SH_PRIVATE */
#define SH_SIGSET 4
#define SH_EXITSIG 0400 /* signal exit bit */
#define SH_EXITMASK (SH_EXITSIG-1) /* normal exit status bits */
#define SH_RUNPROG -1022 /* needs to be negative and < 256 */
#endif /* SH_INTERACTIVE */
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