/******************************************************************* * * * 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 * *******************************************************************/ #pragma prototyped #ifndef SH_INTERACTIVE /* * David Korn * AT&T Labs * * Interface definitions for shell command language * */ #include #include #include #ifdef _SH_PRIVATE # include "name.h" #else # include #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 */