/*********************************************************************** * * * This software is part of the ast package * * Copyright (c) 1982-2007 AT&T Knowledge Ventures * * and is licensed under the * * Common Public License, Version 1.0 * * by AT&T Knowledge Ventures * * * * A copy of the License is available at * * http://www.opensource.org/licenses/cpl1.0.txt * * (with md5 checksum 059e8cd6165cb4c31e351f2b69388fd9) * * * * Information and Software Systems Research * * AT&T Research * * Florham Park NJ * * * * David Korn * * * ***********************************************************************/ #pragma prototyped #ifndef SH_INTERACTIVE /* * David Korn * AT&T Labs * * Interface definitions for shell command language * */ #include #include #ifdef _SH_PRIVATE # include "name.h" #else # include #endif /* _SH_PRIVATE */ #define SH_VERSION 20060510 #undef NOT_USED #define NOT_USED(x) (&x,1) /* options */ typedef struct { unsigned long v[4]; } Shopt_t; typedef void (*Shinit_f)(int); typedef int (*Shbltin_f)(int, char*[], void*); typedef int (*Shwait_f)(int, long, int); union Shnode_u; typedef union Shnode_u Shnode_t; #define SH_CFLAG 0 #define SH_HISTORY 1 /* used also as a state */ #define SH_ERREXIT 2 /* used also as a state */ #define SH_VERBOSE 3 /* used also as a state */ #define SH_MONITOR 4 /* used also as a state */ #define SH_INTERACTIVE 5 /* used also as a state */ #define SH_RESTRICTED 6 #define SH_XTRACE 7 #define SH_KEYWORD 8 #define SH_NOUNSET 9 #define SH_NOGLOB 10 #define SH_ALLEXPORT 11 #define SH_PFSH 12 #define SH_IGNOREEOF 13 #define SH_NOCLOBBER 14 #define SH_MARKDIRS 15 #define SH_BGNICE 16 #define SH_VI 17 #define SH_VIRAW 18 #define SH_TFLAG 19 #define SH_TRACKALL 20 #define SH_SFLAG 21 #define SH_NOEXEC 22 #define SH_GMACS 24 #define SH_EMACS 25 #define SH_PRIVILEGED 26 #define SH_SUBSHARE 27 /* subshell shares state with parent */ #define SH_NOLOG 28 #define SH_NOTIFY 29 #define SH_DICTIONARY 30 #define SH_PIPEFAIL 32 #define SH_GLOBSTARS 33 #define SH_XARGS 34 #define SH_RC 35 #define SH_SHOWME 36 /* * passed as flags to builtins in Nambltin_t struct when BLT_OPTIM is on */ #define SH_BEGIN_OPTIM 0x1 #define SH_END_OPTIM 0x2 /* 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; char *filename; int lineno; Dt_t *var_tree; struct sh_scope *self; } Shscope_t; /* * Saves the state of the shell */ typedef struct sh_static { 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 */ Shscope_t *topscope; /* pointer to top-level scope */ int inlineno; /* line number of current input file */ int exitval; /* most recent exit value */ unsigned char trapnote; /* set when trap/signal is pending */ char subshell; /* set for virtual subshell */ #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 Shell_t *sh_init(int,char*[],Shinit_f); extern int sh_reinit(char*[]); extern int sh_eval(Sfio_t*,int); extern void sh_delay(double); extern void *sh_parse(Shell_t*, 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 char *sh_fmtqf(const char*, int, int); extern Sfdouble_t 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 mode_t sh_umask(mode_t); extern void *sh_waitnotify(Shwait_f); extern Shscope_t *sh_getscope(int,int); extern Shscope_t *sh_setscope(Shscope_t*); extern void sh_sigcheck(void); extern unsigned long sh_isoption(int); extern unsigned long sh_onoption(int); extern unsigned long sh_offoption(int); extern int sh_waitsafe(void); extern int sh_exec(const Shnode_t*,int); #if 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) extern __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 umask(a) sh_umask(a) # 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 */