sh.h revision 1.13
1 /* $NetBSD: sh.h,v 1.13 2017/06/22 23:15:05 kamil Exp $ */ 2 3 /* 4 * Public Domain Bourne/Korn shell 5 */ 6 7 /* $Id: sh.h,v 1.13 2017/06/22 23:15:05 kamil Exp $ */ 8 9 #include "config.h" /* system and option configuration info */ 10 11 #ifdef HAVE_PROTOTYPES 12 # define ARGS(args) args /* prototype declaration */ 13 #else 14 # define ARGS(args) () /* K&R declaration */ 15 #endif 16 17 /* Start of common headers */ 18 19 #include <stdio.h> 20 #include <sys/types.h> 21 #include <setjmp.h> 22 #ifdef HAVE_STDDEF_H 23 # include <stddef.h> 24 #endif 25 26 #ifdef HAVE_STDLIB_H 27 # include <stdlib.h> 28 #else 29 /* just a useful subset of what stdlib.h would have */ 30 extern char * getenv ARGS((const char *)); 31 extern void * malloc ARGS((size_t)); 32 extern void * realloc ARGS((void *, size_t)); 33 extern int free ARGS((void *)); 34 extern int exit ARGS((int)); 35 extern int rand ARGS((void)); 36 extern void srand ARGS((unsigned int)); 37 extern int atoi ARGS((const char *)); 38 #endif /* HAVE_STDLIB_H */ 39 40 #include <unistd.h> 41 42 #ifdef HAVE_STRING_H 43 # include <string.h> 44 #else 45 # include <strings.h> 46 # define strchr index 47 # define strrchr rindex 48 #endif /* HAVE_STRING_H */ 49 #ifndef HAVE_STRSTR 50 char *strstr ARGS((const char *s, const char *p)); 51 #endif /* HAVE_STRSTR */ 52 #ifndef HAVE_STRCASECMP 53 int strcasecmp ARGS((const char *s1, const char *s2)); 54 int strncasecmp ARGS((const char *s1, const char *s2, int n)); 55 #endif /* HAVE_STRCASECMP */ 56 57 #ifdef HAVE_MEMORY_H 58 # include <memory.h> 59 #endif 60 #ifndef HAVE_MEMSET 61 # define memcpy(d, s, n) bcopy(s, d, n) 62 # define memcmp(s1, s2, n) bcmp(s1, s2, n) 63 void *memset ARGS((void *d, int c, size_t n)); 64 #endif /* HAVE_MEMSET */ 65 #ifndef HAVE_MEMMOVE 66 # ifdef HAVE_BCOPY 67 # define memmove(d, s, n) bcopy(s, d, n) 68 # else 69 void *memmove ARGS((void *d, const void *s, size_t n)); 70 # endif 71 #endif /* HAVE_MEMMOVE */ 72 73 #ifdef HAVE_PROTOTYPES 74 # include <stdarg.h> 75 # define SH_VA_START(va, argn) va_start(va, argn) 76 #else 77 # include <varargs.h> 78 # define SH_VA_START(va, argn) va_start(va) 79 #endif /* HAVE_PROTOTYPES */ 80 81 #include <errno.h> 82 83 #ifdef HAVE_FCNTL_H 84 # include <fcntl.h> 85 #else 86 # include <sys/file.h> 87 #endif /* HAVE_FCNTL_H */ 88 #ifndef O_ACCMODE 89 # define O_ACCMODE (O_RDONLY|O_WRONLY|O_RDWR) 90 #endif /* !O_ACCMODE */ 91 92 #ifndef F_OK /* access() arguments */ 93 # define F_OK 0 94 # define X_OK 1 95 # define W_OK 2 96 # define R_OK 4 97 #endif /* !F_OK */ 98 99 #ifndef SEEK_SET 100 # ifdef L_SET 101 # define SEEK_SET L_SET 102 # define SEEK_CUR L_INCR 103 # define SEEK_END L_XTND 104 # else /* L_SET */ 105 # define SEEK_SET 0 106 # define SEEK_CUR 1 107 # define SEEK_END 2 108 # endif /* L_SET */ 109 #endif /* !SEEK_SET */ 110 111 /* Some machines (eg, FreeBSD 1.1.5) define CLK_TCK in limits.h 112 * (ksh_limval.h assumes limits has been included, if available) 113 */ 114 #ifdef HAVE_LIMITS_H 115 # include <limits.h> 116 #endif /* HAVE_LIMITS_H */ 117 118 #include <signal.h> 119 #ifdef NSIG 120 # define SIGNALS NSIG 121 #else 122 # ifdef _MINIX 123 # define SIGNALS (_NSIG+1) /* _NSIG is # of signals used, excluding 0. */ 124 # else 125 # ifdef _SIGMAX /* QNX */ 126 # define SIGNALS _SIGMAX 127 # else /* _SIGMAX */ 128 # define SIGNALS 32 129 # endif /* _SIGMAX */ 130 # endif /* _MINIX */ 131 #endif /* NSIG */ 132 #ifndef SIGCHLD 133 # define SIGCHLD SIGCLD 134 #endif 135 /* struct sigaction.sa_flags is set to KSH_SA_FLAGS. Used to ensure 136 * system calls are interrupted 137 */ 138 #ifdef SA_INTERRUPT 139 # define KSH_SA_FLAGS SA_INTERRUPT 140 #else /* SA_INTERRUPT */ 141 # define KSH_SA_FLAGS 0 142 #endif /* SA_INTERRUPT */ 143 144 typedef RETSIGTYPE (*handler_t) ARGS((int)); /* signal handler */ 145 146 #ifdef USE_FAKE_SIGACT 147 # include "sigact.h" /* use sjg's fake sigaction() */ 148 #endif 149 150 #ifdef HAVE_PATHS_H 151 # include <paths.h> 152 #endif /* HAVE_PATHS_H */ 153 #ifdef _PATH_DEFPATH 154 # define DEFAULT__PATH _PATH_DEFPATH 155 #else /* _PATH_DEFPATH */ 156 # define DEFAULT__PATH DEFAULT_PATH 157 #endif /* _PATH_DEFPATH */ 158 159 #ifndef offsetof 160 # define offsetof(type,id) ((size_t)&((type*)NULL)->id) 161 #endif 162 163 #ifndef HAVE_KILLPG 164 # define killpg(p, s) kill(-(p), (s)) 165 #endif /* !HAVE_KILLPG */ 166 167 /* Special cases for execve(2) */ 168 # if defined(OS_ISC) && defined(_POSIX_SOURCE) 169 /* Kludge for ISC 3.2 (and other versions?) so programs will run correctly. */ 170 # define ksh_execve(p, av, ev, flags) \ 171 do { \ 172 __setostype(0); \ 173 execve(p, av, ev); \ 174 __setostype(1); \ 175 } while (0) 176 # else /* OS_ISC && _POSIX */ 177 # define ksh_execve(p, av, ev, flags) execve(p, av, ev) 178 # endif /* OS_ISC && _POSIX */ 179 180 /* this is a hang-over from older versions of the os2 port */ 181 #define ksh_dupbase(fd, base) fcntl(fd, F_DUPFD, base) 182 183 #ifdef HAVE_SIGSETJMP 184 # define ksh_sigsetjmp(env,sm) sigsetjmp((env), (sm)) 185 # define ksh_siglongjmp(env,v) siglongjmp((env), (v)) 186 # define ksh_jmp_buf sigjmp_buf 187 #else /* HAVE_SIGSETJMP */ 188 # ifdef HAVE__SETJMP 189 # define ksh_sigsetjmp(env,sm) _setjmp(env) 190 # define ksh_siglongjmp(env,v) _longjmp((env), (v)) 191 # else /* HAVE__SETJMP */ 192 # define ksh_sigsetjmp(env,sm) setjmp(env) 193 # define ksh_siglongjmp(env,v) longjmp((env), (v)) 194 # endif /* HAVE__SETJMP */ 195 # define ksh_jmp_buf jmp_buf 196 #endif /* HAVE_SIGSETJMP */ 197 198 #ifndef HAVE_DUP2 199 extern int dup2 ARGS((int, int)); 200 #endif /* !HAVE_DUP2 */ 201 202 /* Find a integer type that is at least 32 bits (or die) - SIZEOF_* defined 203 * by autoconf (assumes an 8 bit byte, but I'm not concerned). 204 * NOTE: INT32 may end up being more than 32 bits. 205 */ 206 #if SIZEOF_INT >= 4 207 # define INT32 int 208 #else /* SIZEOF_INT */ 209 # if SIZEOF_LONG >= 4 210 # define INT32 long 211 # else /* SIZEOF_LONG */ 212 #error cannot find 32 bit type... 213 # endif /* SIZEOF_LONG */ 214 #endif /* SIZEOF_INT */ 215 216 /* end of common headers */ 217 218 /* Stop gcc and lint from complaining about possibly uninitialized variables */ 219 #if defined(__GNUC__) || defined(lint) 220 # define UNINITIALIZED(var) var = 0 221 #else 222 # define UNINITIALIZED(var) var 223 #endif /* GNUC || lint */ 224 225 /* some useful #defines */ 226 #ifdef EXTERN 227 # define I__(i) = i 228 #else 229 # define I__(i) 230 # define EXTERN extern 231 # define EXTERN_DEFINED 232 #endif 233 234 #ifndef EXECSHELL 235 /* shell to exec scripts (see also $SHELL initialization in main.c) */ 236 # define EXECSHELL "/bin/sh" 237 # define EXECSHELL_STR "EXECSHELL" 238 #endif 239 240 /* ISABSPATH() means path is fully and completely specified, 241 * ISROOTEDPATH() means a .. as the first component is a no-op, 242 * ISRELPATH() means $PWD can be tacked on to get an absolute path. 243 * 244 * OS Path ISABSPATH ISROOTEDPATH ISRELPATH 245 * unix /foo yes yes no 246 * unix foo no no yes 247 * unix ../foo no no yes 248 */ 249 # define PATHSEP ':' 250 # define DIRSEP '/' 251 # define DIRSEPSTR "/" 252 # define ISDIRSEP(c) ((c) == '/') 253 # define ISABSPATH(s) ISDIRSEP((s)[0]) 254 # define ISRELPATH(s) (!ISABSPATH(s)) 255 # define ISROOTEDPATH(s) ISABSPATH(s) 256 # define FILECHCONV(c) c 257 # define FILECMP(s1, s2) strcmp(s1, s2) 258 # define FILENCMP(s1, s2, n) strncmp(s1, s2, n) 259 # define ksh_strchr_dirsep(p) strchr(p, DIRSEP) 260 # define ksh_strrchr_dirsep(p) strrchr(p, DIRSEP) 261 262 typedef int bool_t; 263 #define FALSE 0 264 #define TRUE 1 265 266 #define NELEM(a) (sizeof(a) / sizeof((a)[0])) 267 #define sizeofN(type, n) (sizeof(type) * (n)) 268 #define BIT(i) (1<<(i)) /* define bit in flag */ 269 270 /* Table flag type - needs > 16 and < 32 bits */ 271 typedef INT32 Tflag; 272 273 #define NUFILE 32 /* Number of user-accessible files */ 274 #define FDBASE 10 /* First file usable by Shell */ 275 276 /* you're not going to run setuid shell scripts, are you? */ 277 #define eaccess(path, mode) access(path, mode) 278 279 /* Make MAGIC a char that might be printed to make bugs more obvious, but 280 * not a char that is used often. Also, can't use the high bit as it causes 281 * portability problems (calling strchr(x, 0x80|'x') is error prone). 282 */ 283 #define MAGIC (7) /* prefix for *?[!{,} during expand */ 284 #define ISMAGIC(c) ((unsigned char)(c) == MAGIC) 285 #define NOT '!' /* might use ^ (ie, [!...] vs [^..]) */ 286 287 #define LINE 1024 /* input line size */ 288 #define PATH 1024 /* pathname size (todo: PATH_MAX/pathconf()) */ 289 #define ARRAYMAX 1023 /* max array index */ 290 291 EXTERN const char *kshname; /* $0 */ 292 EXTERN pid_t kshpid; /* $$, shell pid */ 293 EXTERN pid_t procpid; /* pid of executing process */ 294 EXTERN uid_t ksheuid; /* effective uid of shell */ 295 EXTERN int exstat; /* exit status */ 296 EXTERN int subst_exstat; /* exit status of last $(..)/`..` */ 297 EXTERN const char *safe_prompt; /* safe prompt if PS1 substitution fails */ 298 299 /* 300 * Area-based allocation built on malloc/free 301 */ 302 typedef struct Area { 303 struct link *freelist; /* free list */ 304 } Area; 305 306 EXTERN Area aperm; /* permanent object space */ 307 #define APERM &aperm 308 #define ATEMP &e->area 309 310 #ifdef MEM_DEBUG 311 # include "chmem.h" /* a debugging front end for malloc et. al. */ 312 #endif /* MEM_DEBUG */ 313 314 #ifdef KSH_DEBUG 315 # define kshdebug_init() kshdebug_init_() 316 # define kshdebug_printf(a) kshdebug_printf_ a 317 # define kshdebug_dump(a) kshdebug_dump_ a 318 #else /* KSH_DEBUG */ 319 # define kshdebug_init() 320 # define kshdebug_printf(a) 321 # define kshdebug_dump(a) 322 #endif /* KSH_DEBUG */ 323 324 /* 325 * parsing & execution environment 326 */ 327 EXTERN struct env { 328 short type; /* environment type - see below */ 329 short flags; /* EF_* */ 330 Area area; /* temporary allocation area */ 331 struct block *loc; /* local variables and functions */ 332 short *savefd; /* original redirected fd's */ 333 struct env *oenv; /* link to previous environment */ 334 ksh_jmp_buf jbuf; /* long jump back to env creator */ 335 struct temp *temps; /* temp files */ 336 } *e; 337 338 /* struct env.type values */ 339 #define E_NONE 0 /* dummy environment */ 340 #define E_PARSE 1 /* parsing command # */ 341 #define E_FUNC 2 /* executing function # */ 342 #define E_INCL 3 /* including a file via . # */ 343 #define E_EXEC 4 /* executing command tree */ 344 #define E_LOOP 5 /* executing for/while # */ 345 #define E_ERRH 6 /* general error handler # */ 346 /* # indicates env has valid jbuf (see unwind()) */ 347 348 /* struct env.flag values */ 349 #define EF_FUNC_PARSE BIT(0) /* function being parsed */ 350 #define EF_BRKCONT_PASS BIT(1) /* set if E_LOOP must pass break/continue on */ 351 #define EF_FAKE_SIGDIE BIT(2) /* hack to get info from unwind to quitenv */ 352 353 /* Do breaks/continues stop at env type e? */ 354 #define STOP_BRKCONT(t) ((t) == E_NONE || (t) == E_PARSE \ 355 || (t) == E_FUNC || (t) == E_INCL) 356 /* Do returns stop at env type e? */ 357 #define STOP_RETURN(t) ((t) == E_FUNC || (t) == E_INCL) 358 359 /* values for ksh_siglongjmp(e->jbuf, 0) */ 360 #define LRETURN 1 /* return statement */ 361 #define LEXIT 2 /* exit statement */ 362 #define LERROR 3 /* errorf() called */ 363 #define LLEAVE 4 /* untrappable exit/error */ 364 #define LINTR 5 /* ^C noticed */ 365 #define LBREAK 6 /* break statement */ 366 #define LCONTIN 7 /* continue statement */ 367 #define LSHELL 8 /* return to interactive shell() */ 368 #define LAEXPR 9 /* error in arithmetic expression */ 369 370 /* option processing */ 371 #define OF_CMDLINE 0x01 /* command line */ 372 #define OF_SET 0x02 /* set builtin */ 373 #define OF_SPECIAL 0x04 /* a special variable changing */ 374 #define OF_INTERNAL 0x08 /* set internally by shell */ 375 #define OF_ANY (OF_CMDLINE | OF_SET | OF_SPECIAL | OF_INTERNAL) 376 377 struct option { 378 const char *name; /* long name of option */ 379 char c; /* character flag (if any) */ 380 short flags; /* OF_* */ 381 }; 382 extern const struct option goptions[]; 383 384 /* 385 * flags (the order of these enums MUST match the order in misc.c(options[])) 386 */ 387 enum sh_flag { 388 FEXPORT = 0, /* -a: export all */ 389 #ifdef BRACE_EXPAND 390 FBRACEEXPAND, /* enable {} globbing */ 391 #endif 392 FBGNICE, /* bgnice */ 393 FCOMMAND, /* -c: (invocation) execute specified command */ 394 #ifdef EMACS 395 FEMACS, /* emacs command editing */ 396 FEMACSUSEMETA, /* use 8th bit as meta */ 397 #endif 398 FERREXIT, /* -e: quit on error */ 399 #ifdef EMACS 400 FGMACS, /* gmacs command editing */ 401 #endif 402 FIGNOREEOF, /* eof does not exit */ 403 FTALKING, /* -i: interactive */ 404 FKEYWORD, /* -k: name=value anywhere */ 405 FLOGIN, /* -l: a login shell */ 406 FMARKDIRS, /* mark dirs with / in file name completion */ 407 FMONITOR, /* -m: job control monitoring */ 408 FNOCLOBBER, /* -C: don't overwrite existing files */ 409 FNOEXEC, /* -n: don't execute any commands */ 410 FNOGLOB, /* -f: don't do file globbing */ 411 FNOHUP, /* -H: don't kill running jobs when login shell exits */ 412 FNOLOG, /* don't save functions in history (ignored) */ 413 #ifdef JOBS 414 FNOTIFY, /* -b: asynchronous job completion notification */ 415 #endif 416 FNOUNSET, /* -u: using an unset var is an error */ 417 FPHYSICAL, /* -o physical: don't do logical cd's/pwd's */ 418 FPOSIX, /* -o posix: be posixly correct */ 419 FPRIVILEGED, /* -p: use suid_profile */ 420 FRESTRICTED, /* -r: restricted shell */ 421 FSTDIN, /* -s: (invocation) parse stdin */ 422 FTRACKALL, /* -h: create tracked aliases for all commands */ 423 FVERBOSE, /* -v: echo input */ 424 #ifdef VI 425 FVI, /* vi command editing */ 426 FVIRAW, /* always read in raw mode (ignored) */ 427 FVISHOW8, /* display chars with 8th bit set as is (versus M-) */ 428 FVITABCOMPLETE, /* enable tab as file name completion char */ 429 FVIESCCOMPLETE, /* enable ESC as file name completion in command mode */ 430 #endif 431 FXTRACE, /* -x: execution trace */ 432 FTALKING_I, /* (internal): initial shell was interactive */ 433 FNFLAGS /* (place holder: how many flags are there) */ 434 }; 435 436 #define Flag(f) (shell_flags[(int) (f)]) 437 438 EXTERN char shell_flags [FNFLAGS]; 439 440 EXTERN char null [] I__(""); /* null value for variable */ 441 EXTERN char space [] I__(" "); 442 EXTERN char newline [] I__("\n"); 443 EXTERN char slash [] I__("/"); 444 445 enum temp_type { 446 TT_HEREDOC_EXP, /* expanded heredoc */ 447 TT_HIST_EDIT /* temp file used for history editing (fc -e) */ 448 }; 449 typedef enum temp_type Temp_type; 450 /* temp/heredoc files. The file is removed when the struct is freed. */ 451 struct temp { 452 struct temp *next; 453 struct shf *shf; 454 int pid; /* pid of process parsed here-doc */ 455 Temp_type type; 456 char *name; 457 }; 458 459 /* 460 * stdio and our IO routines 461 */ 462 463 #define shl_spare (&shf_iob[0]) /* for c_read()/c_print() */ 464 #define shl_stdout (&shf_iob[1]) 465 #define shl_out (&shf_iob[2]) 466 EXTERN int shl_stdout_ok; 467 468 /* 469 * trap handlers 470 */ 471 typedef struct trap { 472 int signal; /* signal number */ 473 const char *name; /* short name */ 474 const char *mess; /* descriptive name */ 475 char *trap; /* trap command */ 476 int volatile set; /* trap pending */ 477 int flags; /* TF_* */ 478 handler_t cursig; /* current handler (valid if TF_ORIG_* set) */ 479 handler_t shtrap; /* shell signal handler */ 480 } Trap; 481 482 /* values for Trap.flags */ 483 #define TF_SHELL_USES BIT(0) /* shell uses signal, user can't change */ 484 #define TF_USER_SET BIT(1) /* user has (tried to) set trap */ 485 #define TF_ORIG_IGN BIT(2) /* original action was SIG_IGN */ 486 #define TF_ORIG_DFL BIT(3) /* original action was SIG_DFL */ 487 #define TF_EXEC_IGN BIT(4) /* restore SIG_IGN just before exec */ 488 #define TF_EXEC_DFL BIT(5) /* restore SIG_DFL just before exec */ 489 #define TF_DFL_INTR BIT(6) /* when received, default action is LINTR */ 490 #define TF_TTY_INTR BIT(7) /* tty generated signal (see j_waitj) */ 491 #define TF_CHANGED BIT(8) /* used by runtrap() to detect trap changes */ 492 #define TF_FATAL BIT(9) /* causes termination if not trapped */ 493 494 /* values for setsig()/setexecsig() flags argument */ 495 #define SS_RESTORE_MASK 0x3 /* how to restore a signal before an exec() */ 496 #define SS_RESTORE_CURR 0 /* leave current handler in place */ 497 #define SS_RESTORE_ORIG 1 /* restore original handler */ 498 #define SS_RESTORE_DFL 2 /* restore to SIG_DFL */ 499 #define SS_RESTORE_IGN 3 /* restore to SIG_IGN */ 500 #define SS_FORCE BIT(3) /* set signal even if original signal ignored */ 501 #define SS_USER BIT(4) /* user is doing the set (ie, trap command) */ 502 #define SS_SHTRAP BIT(5) /* trap for internal use (CHLD,ALRM,WINCH) */ 503 504 #define SIGEXIT_ 0 /* for trap EXIT */ 505 #define SIGERR_ SIGNALS /* for trap ERR */ 506 507 EXTERN int volatile trap; /* traps pending? */ 508 EXTERN int volatile intrsig; /* pending trap interrupts executing command */ 509 EXTERN int volatile fatal_trap;/* received a fatal signal */ 510 extern Trap sigtraps[SIGNALS+1]; 511 512 #ifdef KSH 513 /* 514 * TMOUT support 515 */ 516 /* values for ksh_tmout_state */ 517 enum tmout_enum { 518 TMOUT_EXECUTING = 0, /* executing commands */ 519 TMOUT_READING, /* waiting for input */ 520 TMOUT_LEAVING /* have timed out */ 521 }; 522 EXTERN unsigned int ksh_tmout; 523 EXTERN enum tmout_enum ksh_tmout_state I__(TMOUT_EXECUTING); 524 #endif /* KSH */ 525 526 /* For "You have stopped jobs" message */ 527 EXTERN int really_exit; 528 529 /* 530 * fast character classes 531 */ 532 #define C_ALPHA BIT(0) /* a-z_A-Z */ 533 #define C_DIGIT BIT(1) /* 0-9 */ 534 #define C_LEX1 BIT(2) /* \0 \t\n|&;<>() */ 535 #define C_VAR1 BIT(3) /* *@#!$-? */ 536 #define C_IFSWS BIT(4) /* \t \n (IFS white space) */ 537 #define C_SUBOP1 BIT(5) /* "=-+?" */ 538 #define C_SUBOP2 BIT(6) /* "#%" */ 539 #define C_IFS BIT(7) /* $IFS */ 540 #define C_QUOTE BIT(8) /* \n\t"#$&'()*;<>?[\`| (needing quoting) */ 541 542 extern short ctypes []; 543 544 #define ctype(c, t) !!(ctypes[(unsigned char)(c)]&(t)) 545 #define letter(c) ctype(c, C_ALPHA) 546 #define digit(c) ctype(c, C_DIGIT) 547 #define letnum(c) ctype(c, C_ALPHA|C_DIGIT) 548 549 EXTERN int ifs0 I__(' '); /* for "$*" */ 550 551 /* Argument parsing for built-in commands and getopts command */ 552 553 /* Values for Getopt.flags */ 554 #define GF_ERROR BIT(0) /* call errorf() if there is an error */ 555 #define GF_PLUSOPT BIT(1) /* allow +c as an option */ 556 #define GF_NONAME BIT(2) /* don't print argv[0] in errors */ 557 558 /* Values for Getopt.info */ 559 #define GI_MINUS BIT(0) /* an option started with -... */ 560 #define GI_PLUS BIT(1) /* an option started with +... */ 561 #define GI_MINUSMINUS BIT(2) /* arguments were ended with -- */ 562 563 typedef struct { 564 int optind; 565 int uoptind;/* what user sees in $OPTIND */ 566 char *optarg; 567 int flags; /* see GF_* */ 568 int info; /* see GI_* */ 569 unsigned int p; /* 0 or index into argv[optind - 1] */ 570 char buf[2]; /* for bad option OPTARG value */ 571 } Getopt; 572 573 EXTERN Getopt builtin_opt; /* for shell builtin commands */ 574 EXTERN Getopt user_opt; /* parsing state for getopts builtin command */ 575 576 #ifdef KSH 577 /* This for co-processes */ 578 579 typedef INT32 Coproc_id; /* something that won't (realisticly) wrap */ 580 struct coproc { 581 int read; /* pipe from co-process's stdout */ 582 int readw; /* other side of read (saved temporarily) */ 583 int write; /* pipe to co-process's stdin */ 584 Coproc_id id; /* id of current output pipe */ 585 int njobs; /* number of live jobs using output pipe */ 586 void *job; /* 0 or job of co-process using input pipe */ 587 }; 588 EXTERN struct coproc coproc; 589 #endif /* KSH */ 590 591 /* Used in jobs.c and by coprocess stuff in exec.c */ 592 #ifdef JOB_SIGS 593 EXTERN sigset_t sm_default, sm_sigchld; 594 #endif /* JOB_SIGS */ 595 596 extern char ksh_version[]; 597 598 /* name of called builtin function (used by error functions) */ 599 EXTERN char *builtin_argv0; 600 EXTERN Tflag builtin_flag; /* flags of called builtin (SPEC_BI, etc.) */ 601 602 /* current working directory, and size of memory allocated for same */ 603 EXTERN char *current_wd; 604 EXTERN int current_wd_size; 605 606 #ifdef EDIT 607 /* Minimum required space to work with on a line - if the prompt leaves less 608 * space than this on a line, the prompt is truncated. 609 */ 610 # define MIN_EDIT_SPACE 7 611 /* Minimum allowed value for x_cols: 2 for prompt, 3 for " < " at end of line 612 */ 613 # define MIN_COLS (2 + MIN_EDIT_SPACE + 3) 614 EXTERN int x_cols I__(80); /* tty columns */ 615 #else 616 # define x_cols 80 /* for pr_menu(exec.c) */ 617 #endif 618 619 /* These to avoid bracket matching problems */ 620 #define OPAREN '(' 621 #define CPAREN ')' 622 #define OBRACK '[' 623 #define CBRACK ']' 624 #define OBRACE '{' 625 #define CBRACE '}' 626 627 /* Determine the location of the system (common) profile */ 628 #ifndef KSH_SYSTEM_PROFILE 629 # ifdef __NeXT 630 # define KSH_SYSTEM_PROFILE "/etc/profile.std" 631 # else /* __NeXT */ 632 # define KSH_SYSTEM_PROFILE "/etc/profile" 633 # endif /* __NeXT */ 634 #endif /* KSH_SYSTEM_PROFILE */ 635 636 /* Used by v_evaluate() and setstr() to control action when error occurs */ 637 #define KSH_UNWIND_ERROR 0 /* unwind the stack (longjmp) */ 638 #define KSH_RETURN_ERROR 1 /* return 1/0 for success/failure */ 639 640 #include "shf.h" 641 #include "table.h" 642 #include "tree.h" 643 #include "expand.h" 644 #include "lex.h" 645 #include "proto.h" 646 647 /* be sure not to interfere with anyone else's idea about EXTERN */ 648 #ifdef EXTERN_DEFINED 649 # undef EXTERN_DEFINED 650 # undef EXTERN 651 #endif 652 #undef I__ 653
Indexes created Wed Oct 22 00:09:40 GMT 2025