1 /*********************************************************************** 2 * * 3 * This software is part of the ast package * 4 * Copyright (c) 1982-2007 AT&T Knowledge Ventures * 5 * and is licensed under the * 6 * Common Public License, Version 1.0 * 7 * by AT&T Knowledge Ventures * 8 * * 9 * A copy of the License is available at * 10 * http://www.opensource.org/licenses/cpl1.0.txt * 11 * (with md5 checksum 059e8cd6165cb4c31e351f2b69388fd9) * 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 #include <cmd.h> 31 #include <cdt.h> 32 #ifdef _SH_PRIVATE 33 # include "name.h" 34 #else 35 # include <nval.h> 36 #endif /* _SH_PRIVATE */ 37 38 #define SH_VERSION 20060510 39 40 #undef NOT_USED 41 #define NOT_USED(x) (&x,1) 42 43 /* options */ 44 typedef struct 45 { 46 unsigned long v[4]; 47 } 48 Shopt_t; 49 50 typedef void (*Shinit_f)(int); 51 typedef int (*Shbltin_f)(int, char*[], void*); 52 typedef int (*Shwait_f)(int, long, int); 53 54 union Shnode_u; 55 typedef union Shnode_u Shnode_t; 56 57 #define SH_CFLAG 0 58 #define SH_HISTORY 1 /* used also as a state */ 59 #define SH_ERREXIT 2 /* used also as a state */ 60 #define SH_VERBOSE 3 /* used also as a state */ 61 #define SH_MONITOR 4 /* used also as a state */ 62 #define SH_INTERACTIVE 5 /* used also as a state */ 63 #define SH_RESTRICTED 6 64 #define SH_XTRACE 7 65 #define SH_KEYWORD 8 66 #define SH_NOUNSET 9 67 #define SH_NOGLOB 10 68 #define SH_ALLEXPORT 11 69 #define SH_PFSH 12 70 #define SH_IGNOREEOF 13 71 #define SH_NOCLOBBER 14 72 #define SH_MARKDIRS 15 73 #define SH_BGNICE 16 74 #define SH_VI 17 75 #define SH_VIRAW 18 76 #define SH_TFLAG 19 77 #define SH_TRACKALL 20 78 #define SH_SFLAG 21 79 #define SH_NOEXEC 22 80 #define SH_GMACS 24 81 #define SH_EMACS 25 82 #define SH_PRIVILEGED 26 83 #define SH_SUBSHARE 27 /* subshell shares state with parent */ 84 #define SH_NOLOG 28 85 #define SH_NOTIFY 29 86 #define SH_DICTIONARY 30 87 #define SH_PIPEFAIL 32 88 #define SH_GLOBSTARS 33 89 #define SH_XARGS 34 90 #define SH_RC 35 91 #define SH_SHOWME 36 92 93 /* 94 * passed as flags to builtins in Nambltin_t struct when BLT_OPTIM is on 95 */ 96 #define SH_BEGIN_OPTIM 0x1 97 #define SH_END_OPTIM 0x2 98 99 /* The following type is used for error messages */ 100 101 /* error messages */ 102 extern const char e_defpath[]; 103 extern const char e_found[]; 104 extern const char e_nospace[]; 105 extern const char e_format[]; 106 extern const char e_number[]; 107 extern const char e_restricted[]; 108 extern const char e_recursive[]; 109 extern char e_version[]; 110 111 typedef struct sh_scope 112 { 113 struct sh_scope *par_scope; 114 int argc; 115 char **argv; 116 char *cmdname; 117 char *filename; 118 int lineno; 119 Dt_t *var_tree; 120 struct sh_scope *self; 121 } Shscope_t; 122 123 /* 124 * Saves the state of the shell 125 */ 126 127 typedef struct sh_static 128 { 129 Shopt_t options; /* set -o options */ 130 Dt_t *var_tree; /* for shell variables */ 131 Dt_t *fun_tree; /* for shell functions */ 132 Dt_t *alias_tree; /* for alias names */ 133 Dt_t *bltin_tree; /* for builtin commands */ 134 Shscope_t *topscope; /* pointer to top-level scope */ 135 int inlineno; /* line number of current input file */ 136 int exitval; /* most recent exit value */ 137 unsigned char trapnote; /* set when trap/signal is pending */ 138 char subshell; /* set for virtual subshell */ 139 #ifdef _SH_PRIVATE 140 _SH_PRIVATE 141 #endif /* _SH_PRIVATE */ 142 } Shell_t; 143 144 /* flags for sh_parse */ 145 #define SH_NL 1 /* Treat new-lines as ; */ 146 #define SH_EOF 2 /* EOF causes syntax error */ 147 148 /* symbolic values for sh_iogetiop */ 149 #define SH_IOCOPROCESS (-2) 150 #define SH_IOHISTFILE (-3) 151 152 /* symbolic value for sh_fdnotify */ 153 #define SH_FDCLOSE (-1) 154 155 #if defined(__EXPORT__) && defined(_DLL) 156 # ifdef _BLD_shell 157 # define extern __EXPORT__ 158 # endif /* _BLD_shell */ 159 #endif /* _DLL */ 160 161 extern Dt_t *sh_bltin_tree(void); 162 extern void sh_subfork(void); 163 extern Shell_t *sh_init(int,char*[],Shinit_f); 164 extern int sh_reinit(char*[]); 165 extern int sh_eval(Sfio_t*,int); 166 extern void sh_delay(double); 167 extern void *sh_parse(Shell_t*, Sfio_t*,int); 168 extern int sh_trap(const char*,int); 169 extern int sh_fun(Namval_t*,Namval_t*, char*[]); 170 extern int sh_funscope(int,char*[],int(*)(void*),void*,int); 171 extern Sfio_t *sh_iogetiop(int,int); 172 extern int sh_main(int, char*[], void(*)(int)); 173 extern void sh_menu(Sfio_t*, int, char*[]); 174 extern Namval_t *sh_addbuiltin(const char*, int(*)(int, char*[],void*), void*); 175 extern char *sh_fmtq(const char*); 176 extern char *sh_fmtqf(const char*, int, int); 177 extern Sfdouble_t sh_strnum(const char*, char**, int); 178 extern int sh_access(const char*,int); 179 extern int sh_close(int); 180 extern int sh_dup(int); 181 extern void sh_exit(int); 182 extern int sh_fcntl(int, int, ...); 183 extern Sfio_t *sh_fd2sfio(int); 184 extern int (*sh_fdnotify(int(*)(int,int)))(int,int); 185 extern Shell_t *sh_getinterp(void); 186 extern int sh_open(const char*, int, ...); 187 extern int sh_openmax(void); 188 extern Sfio_t *sh_pathopen(const char*); 189 extern ssize_t sh_read(int, void*, size_t); 190 extern ssize_t sh_write(int, const void*, size_t); 191 extern off_t sh_seek(int, off_t, int); 192 extern int sh_pipe(int[]); 193 extern mode_t sh_umask(mode_t); 194 extern void *sh_waitnotify(Shwait_f); 195 extern Shscope_t *sh_getscope(int,int); 196 extern Shscope_t *sh_setscope(Shscope_t*); 197 extern void sh_sigcheck(void); 198 extern unsigned long sh_isoption(int); 199 extern unsigned long sh_onoption(int); 200 extern unsigned long sh_offoption(int); 201 extern int sh_waitsafe(void); 202 extern int sh_exec(const Shnode_t*,int); 203 204 #if SHOPT_DYNAMIC 205 extern void **sh_getliblist(void); 206 #endif /* SHOPT_DYNAMIC */ 207 208 /* 209 * direct access to sh is obsolete, use sh_getinterp() instead 210 */ 211 #if !defined(_SH_PRIVATE) && defined(__IMPORT__) && !defined(_BLD_shell) 212 extern __IMPORT__ Shell_t sh; 213 #else 214 extern Shell_t sh; 215 #endif 216 217 #ifdef _DLL 218 # undef extern 219 #endif /* _DLL */ 220 221 #ifndef _SH_PRIVATE 222 # define access(a,b) sh_access(a,b) 223 # define close(a) sh_close(a) 224 # define exit(a) sh_exit(a) 225 # define fcntl(a,b,c) sh_fcntl(a,b,c) 226 # define pipe(a) sh_pipe(a) 227 # define read(a,b,c) sh_read(a,b,c) 228 # define write(a,b,c) sh_write(a,b,c) 229 # define umask(a) sh_umask(a) 230 # define dup sh_dup 231 # if _lib_lseek64 232 # define open64 sh_open 233 # define lseek64 sh_seek 234 # else 235 # define open sh_open 236 # define lseek sh_seek 237 # endif 238 #endif /* !_SH_PRIVATE */ 239 240 #define SH_SIGSET 4 241 #define SH_EXITSIG 0400 /* signal exit bit */ 242 #define SH_EXITMASK (SH_EXITSIG-1) /* normal exit status bits */ 243 #define SH_RUNPROG -1022 /* needs to be negative and < 256 */ 244 245 #endif /* SH_INTERACTIVE */ 246