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 */ 44 typedef struct 45 { 46 unsigned long v[4]; 47 } 48 Shopt_t; 49 50 typedef struct Shell_s Shell_t; 51 52 #include <shcmd.h> 53 54 typedef 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 60 union Shnode_u; 61 typedef 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 */ 109 extern const char e_defpath[]; 110 extern const char e_found[]; 111 extern const char e_nospace[]; 112 extern const char e_format[]; 113 extern const char e_number[]; 114 extern const char e_restricted[]; 115 extern const char e_recursive[]; 116 extern char e_version[]; 117 118 typedef 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 */ 134 135 struct 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 */ 173 174 extern Dt_t *sh_bltin_tree(void); 175 extern void sh_subfork(void); 176 extern Shell_t *sh_init(int,char*[],Shinit_f); 177 extern int sh_reinit(char*[]); 178 extern int sh_eval(Sfio_t*,int); 179 extern void sh_delay(double); 180 extern void *sh_parse(Shell_t*, Sfio_t*,int); 181 extern int sh_trap(const char*,int); 182 extern int sh_fun(Namval_t*,Namval_t*, char*[]); 183 extern int sh_funscope(int,char*[],int(*)(void*),void*,int); 184 extern Sfio_t *sh_iogetiop(int,int); 185 extern int sh_main(int, char*[], Shinit_f); 186 extern int sh_run(int, char*[]); 187 extern void sh_menu(Sfio_t*, int, char*[]); 188 extern Namval_t *sh_addbuiltin(const char*, int(*)(int, char*[],Shbltin_t*), void*); 189 extern char *sh_fmtq(const char*); 190 extern char *sh_fmtqf(const char*, int, int); 191 extern Sfdouble_t sh_strnum(const char*, char**, int); 192 extern int sh_access(const char*,int); 193 extern int sh_close(int); 194 extern int sh_chdir(const char*); 195 extern int sh_dup(int); 196 extern void sh_exit(int); 197 extern int sh_fchdir(int); 198 extern int sh_fcntl(int, int, ...); 199 extern Sfio_t *sh_fd2sfio(int); 200 extern int (*sh_fdnotify(int(*)(int,int)))(int,int); 201 extern Shell_t *sh_getinterp(void); 202 extern int sh_open(const char*, int, ...); 203 extern int sh_openmax(void); 204 extern Sfio_t *sh_pathopen(const char*); 205 extern ssize_t sh_read(int, void*, size_t); 206 extern ssize_t sh_write(int, const void*, size_t); 207 extern off_t sh_seek(int, off_t, int); 208 extern int sh_pipe(int[]); 209 extern mode_t sh_umask(mode_t); 210 extern void *sh_waitnotify(Shwait_f); 211 extern Shscope_t *sh_getscope(int,int); 212 extern Shscope_t *sh_setscope(Shscope_t*); 213 extern void sh_sigcheck(Shell_t*); 214 extern unsigned long sh_isoption(int); 215 extern unsigned long sh_onoption(int); 216 extern unsigned long sh_offoption(int); 217 extern int sh_waitsafe(void); 218 extern 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