sh.h revision 1.14
1 /* $NetBSD: sh.h,v 1.14 2017/06/22 23:17:50 kamil Exp $ */ 2 3 /* 4 * Public Domain Bourne/Korn shell 5 */ 6 7 /* $Id: sh.h,v 1.14 2017/06/22 23:17:50 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 #include <stdlib.h> 27 #include <unistd.h> 28 29 #ifdef HAVE_STRING_H 30 # include <string.h> 31 #else 32 # include <strings.h> 33 # define strchr index 34 # define strrchr rindex 35 #endif /* HAVE_STRING_H */ 36 #ifndef HAVE_STRSTR 37 char *strstr ARGS((const char *s, const char *p)); 38 #endif /* HAVE_STRSTR */ 39 #ifndef HAVE_STRCASECMP 40 int strcasecmp ARGS((const char *s1, const char *s2)); 41 int strncasecmp ARGS((const char *s1, const char *s2, int n)); 42 #endif /* HAVE_STRCASECMP */ 43 44 #ifdef HAVE_MEMORY_H 45 # include <memory.h> 46 #endif 47 #ifndef HAVE_MEMSET 48 # define memcpy(d, s, n) bcopy(s, d, n) 49 # define memcmp(s1, s2, n) bcmp(s1, s2, n) 50 void *memset ARGS((void *d, int c, size_t n)); 51 #endif /* HAVE_MEMSET */ 52 #ifndef HAVE_MEMMOVE 53 # ifdef HAVE_BCOPY 54 # define memmove(d, s, n) bcopy(s, d, n) 55 # else 56 void *memmove ARGS((void *d, const void *s, size_t n)); 57 # endif 58 #endif /* HAVE_MEMMOVE */ 59 60 #ifdef HAVE_PROTOTYPES 61 # include <stdarg.h> 62 # define SH_VA_START(va, argn) va_start(va, argn) 63 #else 64 # include <varargs.h> 65 # define SH_VA_START(va, argn) va_start(va) 66 #endif /* HAVE_PROTOTYPES */ 67 68 #include <errno.h> 69 70 #ifdef HAVE_FCNTL_H 71 # include <fcntl.h> 72 #else 73 # include <sys/file.h> 74 #endif /* HAVE_FCNTL_H */ 75 #ifndef O_ACCMODE 76 # define O_ACCMODE (O_RDONLY|O_WRONLY|O_RDWR) 77 #endif /* !O_ACCMODE */ 78 79 #ifndef F_OK /* access() arguments */ 80 # define F_OK 0 81 # define X_OK 1 82 # define W_OK 2 83 # define R_OK 4 84 #endif /* !F_OK */ 85 86 #ifndef SEEK_SET 87 # ifdef L_SET 88 # define SEEK_SET L_SET 89 # define SEEK_CUR L_INCR 90 # define SEEK_END L_XTND 91 # else /* L_SET */ 92 # define SEEK_SET 0 93 # define SEEK_CUR 1 94 # define SEEK_END 2 95 # endif /* L_SET */ 96 #endif /* !SEEK_SET */ 97 98 /* Some machines (eg, FreeBSD 1.1.5) define CLK_TCK in limits.h 99 * (ksh_limval.h assumes limits has been included, if available) 100 */ 101 #ifdef HAVE_LIMITS_H 102 # include <limits.h> 103 #endif /* HAVE_LIMITS_H */ 104 105 #include <signal.h> 106 #ifdef NSIG 107 # define SIGNALS NSIG 108 #else 109 # ifdef _MINIX 110 # define SIGNALS (_NSIG+1) /* _NSIG is # of signals used, excluding 0. */ 111 # else 112 # ifdef _SIGMAX /* QNX */ 113 # define SIGNALS _SIGMAX 114 # else /* _SIGMAX */ 115 # define SIGNALS 32 116 # endif /* _SIGMAX */ 117 # endif /* _MINIX */ 118 #endif /* NSIG */ 119 #ifndef SIGCHLD 120 # define SIGCHLD SIGCLD 121 #endif 122 /* struct sigaction.sa_flags is set to KSH_SA_FLAGS. Used to ensure 123 * system calls are interrupted 124 */ 125 #ifdef SA_INTERRUPT 126 # define KSH_SA_FLAGS SA_INTERRUPT 127 #else /* SA_INTERRUPT */ 128 # define KSH_SA_FLAGS 0 129 #endif /* SA_INTERRUPT */ 130 131 typedef RETSIGTYPE (*handler_t) ARGS((int)); /* signal handler */ 132 133 #ifdef USE_FAKE_SIGACT 134 # include "sigact.h" /* use sjg's fake sigaction() */ 135 #endif 136 137 #ifdef HAVE_PATHS_H 138 # include <paths.h> 139 #endif /* HAVE_PATHS_H */ 140 #ifdef _PATH_DEFPATH 141 # define DEFAULT__PATH _PATH_DEFPATH 142 #else /* _PATH_DEFPATH */ 143 # define DEFAULT__PATH DEFAULT_PATH 144 #endif /* _PATH_DEFPATH */ 145 146 #ifndef offsetof 147 # define offsetof(type,id) ((size_t)&((type*)NULL)->id) 148 #endif 149 150 #ifndef HAVE_KILLPG 151 # define killpg(p, s) kill(-(p), (s)) 152 #endif /* !HAVE_KILLPG */ 153 154 /* Special cases for execve(2) */ 155 # if defined(OS_ISC) && defined(_POSIX_SOURCE) 156 /* Kludge for ISC 3.2 (and other versions?) so programs will run correctly. */ 157 # define ksh_execve(p, av, ev, flags) \ 158 do { \ 159 __setostype(0); \ 160 execve(p, av, ev); \ 161 __setostype(1); \ 162 } while (0) 163 # else /* OS_ISC && _POSIX */ 164 # define ksh_execve(p, av, ev, flags) execve(p, av, ev) 165 # endif /* OS_ISC && _POSIX */ 166 167 /* this is a hang-over from older versions of the os2 port */ 168 #define ksh_dupbase(fd, base) fcntl(fd, F_DUPFD, base) 169 170 #ifdef HAVE_SIGSETJMP 171 # define ksh_sigsetjmp(env,sm) sigsetjmp((env), (sm)) 172 # define ksh_siglongjmp(env,v) siglongjmp((env), (v)) 173 # define ksh_jmp_buf sigjmp_buf 174 #else /* HAVE_SIGSETJMP */ 175 # ifdef HAVE__SETJMP 176 # define ksh_sigsetjmp(env,sm) _setjmp(env) 177 # define ksh_siglongjmp(env,v) _longjmp((env), (v)) 178 # else /* HAVE__SETJMP */ 179 # define ksh_sigsetjmp(env,sm) setjmp(env) 180 # define ksh_siglongjmp(env,v) longjmp((env), (v)) 181 # endif /* HAVE__SETJMP */ 182 # define ksh_jmp_buf jmp_buf 183 #endif /* HAVE_SIGSETJMP */ 184 185 #ifndef HAVE_DUP2 186 extern int dup2 ARGS((int, int)); 187 #endif /* !HAVE_DUP2 */ 188 189 /* Find a integer type that is at least 32 bits (or die) - SIZEOF_* defined 190 * by autoconf (assumes an 8 bit byte, but I'm not concerned). 191 * NOTE: INT32 may end up being more than 32 bits. 192 */ 193 #if SIZEOF_INT >= 4 194 # define INT32 int 195 #else /* SIZEOF_INT */ 196 # if SIZEOF_LONG >= 4 197 # define INT32 long 198 # else /* SIZEOF_LONG */ 199 #error cannot find 32 bit type... 200 # endif /* SIZEOF_LONG */ 201 #endif /* SIZEOF_INT */ 202 203 /* end of common headers */ 204 205 /* Stop gcc and lint from complaining about possibly uninitialized variables */ 206 #if defined(__GNUC__) || defined(lint) 207 # define UNINITIALIZED(var) var = 0 208 #else 209 # define UNINITIALIZED(var) var 210 #endif /* GNUC || lint */ 211 212 /* some useful #defines */ 213 #ifdef EXTERN 214 # define I__(i) = i 215 #else 216 # define I__(i) 217 # define EXTERN extern 218 # define EXTERN_DEFINED 219 #endif 220 221 #ifndef EXECSHELL 222 /* shell to exec scripts (see also $SHELL initialization in main.c) */ 223 # define EXECSHELL "/bin/sh" 224 # define EXECSHELL_STR "EXECSHELL" 225 #endif 226 227 /* ISABSPATH() means path is fully and completely specified, 228 * ISROOTEDPATH() means a .. as the first component is a no-op, 229 * ISRELPATH() means $PWD can be tacked on to get an absolute path. 230 * 231 * OS Path ISABSPATH ISROOTEDPATH ISRELPATH 232 * unix /foo yes yes no 233 * unix foo no no yes 234 * unix ../foo no no yes 235 */ 236 # define PATHSEP ':' 237 # define DIRSEP '/' 238 # define DIRSEPSTR "/" 239 # define ISDIRSEP(c) ((c) == '/') 240 # define ISABSPATH(s) ISDIRSEP((s)[0]) 241 # define ISRELPATH(s) (!ISABSPATH(s)) 242 # define ISROOTEDPATH(s) ISABSPATH(s) 243 # define FILECHCONV(c) c 244 # define FILECMP(s1, s2) strcmp(s1, s2) 245 # define FILENCMP(s1, s2, n) strncmp(s1, s2, n) 246 # define ksh_strchr_dirsep(p) strchr(p, DIRSEP) 247 # define ksh_strrchr_dirsep(p) strrchr(p, DIRSEP) 248 249 typedef int bool_t; 250 #define FALSE 0 251 #define TRUE 1 252 253 #define NELEM(a) (sizeof(a) / sizeof((a)[0])) 254 #define sizeofN(type, n) (sizeof(type) * (n)) 255 #define BIT(i) (1<<(i)) /* define bit in flag */ 256 257 /* Table flag type - needs > 16 and < 32 bits */ 258 typedef INT32 Tflag; 259 260 #define NUFILE 32 /* Number of user-accessible files */ 261 #define FDBASE 10 /* First file usable by Shell */ 262 263 /* you're not going to run setuid shell scripts, are you? */ 264 #define eaccess(path, mode) access(path, mode) 265 266 /* Make MAGIC a char that might be printed to make bugs more obvious, but 267 * not a char that is used often. Also, can't use the high bit as it causes 268 * portability problems (calling strchr(x, 0x80|'x') is error prone). 269 */ 270 #define MAGIC (7) /* prefix for *?[!{,} during expand */ 271 #define ISMAGIC(c) ((unsigned char)(c) == MAGIC) 272 #define NOT '!' /* might use ^ (ie, [!...] vs [^..]) */ 273 274 #define LINE 1024 /* input line size */ 275 #define PATH 1024 /* pathname size (todo: PATH_MAX/pathconf()) */ 276 #define ARRAYMAX 1023 /* max array index */ 277 278 EXTERN const char *kshname; /* $0 */ 279 EXTERN pid_t kshpid; /* $$, shell pid */ 280 EXTERN pid_t procpid; /* pid of executing process */ 281 EXTERN uid_t ksheuid; /* effective uid of shell */ 282 EXTERN int exstat; /* exit status */ 283 EXTERN int subst_exstat; /* exit status of last $(..)/`..` */ 284 EXTERN const char *safe_prompt; /* safe prompt if PS1 substitution fails */ 285 286 /* 287 * Area-based allocation built on malloc/free 288 */ 289 typedef struct Area { 290 struct link *freelist; /* free list */ 291 } Area; 292 293 EXTERN Area aperm; /* permanent object space */ 294 #define APERM &aperm 295 #define ATEMP &e->area 296 297 #ifdef MEM_DEBUG 298 # include "chmem.h" /* a debugging front end for malloc et. al. */ 299 #endif /* MEM_DEBUG */ 300 301 #ifdef KSH_DEBUG 302 # define kshdebug_init() kshdebug_init_() 303 # define kshdebug_printf(a) kshdebug_printf_ a 304 # define kshdebug_dump(a) kshdebug_dump_ a 305 #else /* KSH_DEBUG */ 306 # define kshdebug_init() 307 # define kshdebug_printf(a) 308 # define kshdebug_dump(a) 309 #endif /* KSH_DEBUG */ 310 311 /* 312 * parsing & execution environment 313 */ 314 EXTERN struct env { 315 short type; /* environment type - see below */ 316 short flags; /* EF_* */ 317 Area area; /* temporary allocation area */ 318 struct block *loc; /* local variables and functions */ 319 short *savefd; /* original redirected fd's */ 320 struct env *oenv; /* link to previous environment */ 321 ksh_jmp_buf jbuf; /* long jump back to env creator */ 322 struct temp *temps; /* temp files */ 323 } *e; 324 325 /* struct env.type values */ 326 #define E_NONE 0 /* dummy environment */ 327 #define E_PARSE 1 /* parsing command # */ 328 #define E_FUNC 2 /* executing function # */ 329 #define E_INCL 3 /* including a file via . # */ 330 #define E_EXEC 4 /* executing command tree */ 331 #define E_LOOP 5 /* executing for/while # */ 332 #define E_ERRH 6 /* general error handler # */ 333 /* # indicates env has valid jbuf (see unwind()) */ 334 335 /* struct env.flag values */ 336 #define EF_FUNC_PARSE BIT(0) /* function being parsed */ 337 #define EF_BRKCONT_PASS BIT(1) /* set if E_LOOP must pass break/continue on */ 338 #define EF_FAKE_SIGDIE BIT(2) /* hack to get info from unwind to quitenv */ 339 340 /* Do breaks/continues stop at env type e? */ 341 #define STOP_BRKCONT(t) ((t) == E_NONE || (t) == E_PARSE \ 342 || (t) == E_FUNC || (t) == E_INCL) 343 /* Do returns stop at env type e? */ 344 #define STOP_RETURN(t) ((t) == E_FUNC || (t) == E_INCL) 345 346 /* values for ksh_siglongjmp(e->jbuf, 0) */ 347 #define LRETURN 1 /* return statement */ 348 #define LEXIT 2 /* exit statement */ 349 #define LERROR 3 /* errorf() called */ 350 #define LLEAVE 4 /* untrappable exit/error */ 351 #define LINTR 5 /* ^C noticed */ 352 #define LBREAK 6 /* break statement */ 353 #define LCONTIN 7 /* continue statement */ 354 #define LSHELL 8 /* return to interactive shell() */ 355 #define LAEXPR 9 /* error in arithmetic expression */ 356 357 /* option processing */ 358 #define OF_CMDLINE 0x01 /* command line */ 359 #define OF_SET 0x02 /* set builtin */ 360 #define OF_SPECIAL 0x04 /* a special variable changing */ 361 #define OF_INTERNAL 0x08 /* set internally by shell */ 362 #define OF_ANY (OF_CMDLINE | OF_SET | OF_SPECIAL | OF_INTERNAL) 363 364 struct option { 365 const char *name; /* long name of option */ 366 char c; /* character flag (if any) */ 367 short flags; /* OF_* */ 368 }; 369 extern const struct option goptions[]; 370 371 /* 372 * flags (the order of these enums MUST match the order in misc.c(options[])) 373 */ 374 enum sh_flag { 375 FEXPORT = 0, /* -a: export all */ 376 #ifdef BRACE_EXPAND 377 FBRACEEXPAND, /* enable {} globbing */ 378 #endif 379 FBGNICE, /* bgnice */ 380 FCOMMAND, /* -c: (invocation) execute specified command */ 381 #ifdef EMACS 382 FEMACS, /* emacs command editing */ 383 FEMACSUSEMETA, /* use 8th bit as meta */ 384 #endif 385 FERREXIT, /* -e: quit on error */ 386 #ifdef EMACS 387 FGMACS, /* gmacs command editing */ 388 #endif 389 FIGNOREEOF, /* eof does not exit */ 390 FTALKING, /* -i: interactive */ 391 FKEYWORD, /* -k: name=value anywhere */ 392 FLOGIN, /* -l: a login shell */ 393 FMARKDIRS, /* mark dirs with / in file name completion */ 394 FMONITOR, /* -m: job control monitoring */ 395 FNOCLOBBER, /* -C: don't overwrite existing files */ 396 FNOEXEC, /* -n: don't execute any commands */ 397 FNOGLOB, /* -f: don't do file globbing */ 398 FNOHUP, /* -H: don't kill running jobs when login shell exits */ 399 FNOLOG, /* don't save functions in history (ignored) */ 400 #ifdef JOBS 401 FNOTIFY, /* -b: asynchronous job completion notification */ 402 #endif 403 FNOUNSET, /* -u: using an unset var is an error */ 404 FPHYSICAL, /* -o physical: don't do logical cd's/pwd's */ 405 FPOSIX, /* -o posix: be posixly correct */ 406 FPRIVILEGED, /* -p: use suid_profile */ 407 FRESTRICTED, /* -r: restricted shell */ 408 FSTDIN, /* -s: (invocation) parse stdin */ 409 FTRACKALL, /* -h: create tracked aliases for all commands */ 410 FVERBOSE, /* -v: echo input */ 411 #ifdef VI 412 FVI, /* vi command editing */ 413 FVIRAW, /* always read in raw mode (ignored) */ 414 FVISHOW8, /* display chars with 8th bit set as is (versus M-) */ 415 FVITABCOMPLETE, /* enable tab as file name completion char */ 416 FVIESCCOMPLETE, /* enable ESC as file name completion in command mode */ 417 #endif 418 FXTRACE, /* -x: execution trace */ 419 FTALKING_I, /* (internal): initial shell was interactive */ 420 FNFLAGS /* (place holder: how many flags are there) */ 421 }; 422 423 #define Flag(f) (shell_flags[(int) (f)]) 424 425 EXTERN char shell_flags [FNFLAGS]; 426 427 EXTERN char null [] I__(""); /* null value for variable */ 428 EXTERN char space [] I__(" "); 429 EXTERN char newline [] I__("\n"); 430 EXTERN char slash [] I__("/"); 431 432 enum temp_type { 433 TT_HEREDOC_EXP, /* expanded heredoc */ 434 TT_HIST_EDIT /* temp file used for history editing (fc -e) */ 435 }; 436 typedef enum temp_type Temp_type; 437 /* temp/heredoc files. The file is removed when the struct is freed. */ 438 struct temp { 439 struct temp *next; 440 struct shf *shf; 441 int pid; /* pid of process parsed here-doc */ 442 Temp_type type; 443 char *name; 444 }; 445 446 /* 447 * stdio and our IO routines 448 */ 449 450 #define shl_spare (&shf_iob[0]) /* for c_read()/c_print() */ 451 #define shl_stdout (&shf_iob[1]) 452 #define shl_out (&shf_iob[2]) 453 EXTERN int shl_stdout_ok; 454 455 /* 456 * trap handlers 457 */ 458 typedef struct trap { 459 int signal; /* signal number */ 460 const char *name; /* short name */ 461 const char *mess; /* descriptive name */ 462 char *trap; /* trap command */ 463 int volatile set; /* trap pending */ 464 int flags; /* TF_* */ 465 handler_t cursig; /* current handler (valid if TF_ORIG_* set) */ 466 handler_t shtrap; /* shell signal handler */ 467 } Trap; 468 469 /* values for Trap.flags */ 470 #define TF_SHELL_USES BIT(0) /* shell uses signal, user can't change */ 471 #define TF_USER_SET BIT(1) /* user has (tried to) set trap */ 472 #define TF_ORIG_IGN BIT(2) /* original action was SIG_IGN */ 473 #define TF_ORIG_DFL BIT(3) /* original action was SIG_DFL */ 474 #define TF_EXEC_IGN BIT(4) /* restore SIG_IGN just before exec */ 475 #define TF_EXEC_DFL BIT(5) /* restore SIG_DFL just before exec */ 476 #define TF_DFL_INTR BIT(6) /* when received, default action is LINTR */ 477 #define TF_TTY_INTR BIT(7) /* tty generated signal (see j_waitj) */ 478 #define TF_CHANGED BIT(8) /* used by runtrap() to detect trap changes */ 479 #define TF_FATAL BIT(9) /* causes termination if not trapped */ 480 481 /* values for setsig()/setexecsig() flags argument */ 482 #define SS_RESTORE_MASK 0x3 /* how to restore a signal before an exec() */ 483 #define SS_RESTORE_CURR 0 /* leave current handler in place */ 484 #define SS_RESTORE_ORIG 1 /* restore original handler */ 485 #define SS_RESTORE_DFL 2 /* restore to SIG_DFL */ 486 #define SS_RESTORE_IGN 3 /* restore to SIG_IGN */ 487 #define SS_FORCE BIT(3) /* set signal even if original signal ignored */ 488 #define SS_USER BIT(4) /* user is doing the set (ie, trap command) */ 489 #define SS_SHTRAP BIT(5) /* trap for internal use (CHLD,ALRM,WINCH) */ 490 491 #define SIGEXIT_ 0 /* for trap EXIT */ 492 #define SIGERR_ SIGNALS /* for trap ERR */ 493 494 EXTERN int volatile trap; /* traps pending? */ 495 EXTERN int volatile intrsig; /* pending trap interrupts executing command */ 496 EXTERN int volatile fatal_trap;/* received a fatal signal */ 497 extern Trap sigtraps[SIGNALS+1]; 498 499 #ifdef KSH 500 /* 501 * TMOUT support 502 */ 503 /* values for ksh_tmout_state */ 504 enum tmout_enum { 505 TMOUT_EXECUTING = 0, /* executing commands */ 506 TMOUT_READING, /* waiting for input */ 507 TMOUT_LEAVING /* have timed out */ 508 }; 509 EXTERN unsigned int ksh_tmout; 510 EXTERN enum tmout_enum ksh_tmout_state I__(TMOUT_EXECUTING); 511 #endif /* KSH */ 512 513 /* For "You have stopped jobs" message */ 514 EXTERN int really_exit; 515 516 /* 517 * fast character classes 518 */ 519 #define C_ALPHA BIT(0) /* a-z_A-Z */ 520 #define C_DIGIT BIT(1) /* 0-9 */ 521 #define C_LEX1 BIT(2) /* \0 \t\n|&;<>() */ 522 #define C_VAR1 BIT(3) /* *@#!$-? */ 523 #define C_IFSWS BIT(4) /* \t \n (IFS white space) */ 524 #define C_SUBOP1 BIT(5) /* "=-+?" */ 525 #define C_SUBOP2 BIT(6) /* "#%" */ 526 #define C_IFS BIT(7) /* $IFS */ 527 #define C_QUOTE BIT(8) /* \n\t"#$&'()*;<>?[\`| (needing quoting) */ 528 529 extern short ctypes []; 530 531 #define ctype(c, t) !!(ctypes[(unsigned char)(c)]&(t)) 532 #define letter(c) ctype(c, C_ALPHA) 533 #define digit(c) ctype(c, C_DIGIT) 534 #define letnum(c) ctype(c, C_ALPHA|C_DIGIT) 535 536 EXTERN int ifs0 I__(' '); /* for "$*" */ 537 538 /* Argument parsing for built-in commands and getopts command */ 539 540 /* Values for Getopt.flags */ 541 #define GF_ERROR BIT(0) /* call errorf() if there is an error */ 542 #define GF_PLUSOPT BIT(1) /* allow +c as an option */ 543 #define GF_NONAME BIT(2) /* don't print argv[0] in errors */ 544 545 /* Values for Getopt.info */ 546 #define GI_MINUS BIT(0) /* an option started with -... */ 547 #define GI_PLUS BIT(1) /* an option started with +... */ 548 #define GI_MINUSMINUS BIT(2) /* arguments were ended with -- */ 549 550 typedef struct { 551 int optind; 552 int uoptind;/* what user sees in $OPTIND */ 553 char *optarg; 554 int flags; /* see GF_* */ 555 int info; /* see GI_* */ 556 unsigned int p; /* 0 or index into argv[optind - 1] */ 557 char buf[2]; /* for bad option OPTARG value */ 558 } Getopt; 559 560 EXTERN Getopt builtin_opt; /* for shell builtin commands */ 561 EXTERN Getopt user_opt; /* parsing state for getopts builtin command */ 562 563 #ifdef KSH 564 /* This for co-processes */ 565 566 typedef INT32 Coproc_id; /* something that won't (realisticly) wrap */ 567 struct coproc { 568 int read; /* pipe from co-process's stdout */ 569 int readw; /* other side of read (saved temporarily) */ 570 int write; /* pipe to co-process's stdin */ 571 Coproc_id id; /* id of current output pipe */ 572 int njobs; /* number of live jobs using output pipe */ 573 void *job; /* 0 or job of co-process using input pipe */ 574 }; 575 EXTERN struct coproc coproc; 576 #endif /* KSH */ 577 578 /* Used in jobs.c and by coprocess stuff in exec.c */ 579 #ifdef JOB_SIGS 580 EXTERN sigset_t sm_default, sm_sigchld; 581 #endif /* JOB_SIGS */ 582 583 extern char ksh_version[]; 584 585 /* name of called builtin function (used by error functions) */ 586 EXTERN char *builtin_argv0; 587 EXTERN Tflag builtin_flag; /* flags of called builtin (SPEC_BI, etc.) */ 588 589 /* current working directory, and size of memory allocated for same */ 590 EXTERN char *current_wd; 591 EXTERN int current_wd_size; 592 593 #ifdef EDIT 594 /* Minimum required space to work with on a line - if the prompt leaves less 595 * space than this on a line, the prompt is truncated. 596 */ 597 # define MIN_EDIT_SPACE 7 598 /* Minimum allowed value for x_cols: 2 for prompt, 3 for " < " at end of line 599 */ 600 # define MIN_COLS (2 + MIN_EDIT_SPACE + 3) 601 EXTERN int x_cols I__(80); /* tty columns */ 602 #else 603 # define x_cols 80 /* for pr_menu(exec.c) */ 604 #endif 605 606 /* These to avoid bracket matching problems */ 607 #define OPAREN '(' 608 #define CPAREN ')' 609 #define OBRACK '[' 610 #define CBRACK ']' 611 #define OBRACE '{' 612 #define CBRACE '}' 613 614 /* Determine the location of the system (common) profile */ 615 #ifndef KSH_SYSTEM_PROFILE 616 # ifdef __NeXT 617 # define KSH_SYSTEM_PROFILE "/etc/profile.std" 618 # else /* __NeXT */ 619 # define KSH_SYSTEM_PROFILE "/etc/profile" 620 # endif /* __NeXT */ 621 #endif /* KSH_SYSTEM_PROFILE */ 622 623 /* Used by v_evaluate() and setstr() to control action when error occurs */ 624 #define KSH_UNWIND_ERROR 0 /* unwind the stack (longjmp) */ 625 #define KSH_RETURN_ERROR 1 /* return 1/0 for success/failure */ 626 627 #include "shf.h" 628 #include "table.h" 629 #include "tree.h" 630 #include "expand.h" 631 #include "lex.h" 632 #include "proto.h" 633 634 /* be sure not to interfere with anyone else's idea about EXTERN */ 635 #ifdef EXTERN_DEFINED 636 # undef EXTERN_DEFINED 637 # undef EXTERN 638 #endif 639 #undef I__ 640
Indexes created Wed Oct 22 13:09:56 GMT 2025