1 /* $OpenBSD: sh.h,v 1.35 2015/09/10 22:48:58 nicm Exp $ */ 2 /* $OpenBSD: shf.h,v 1.6 2005/12/11 18:53:51 deraadt Exp $ */ 3 /* $OpenBSD: table.h,v 1.8 2012/02/19 07:52:30 otto Exp $ */ 4 /* $OpenBSD: tree.h,v 1.10 2005/03/28 21:28:22 deraadt Exp $ */ 5 /* $OpenBSD: expand.h,v 1.7 2015/09/01 13:12:31 tedu Exp $ */ 6 /* $OpenBSD: lex.h,v 1.13 2013/03/03 19:11:34 guenther Exp $ */ 7 /* $OpenBSD: proto.h,v 1.35 2013/09/04 15:49:19 millert Exp $ */ 8 /* $OpenBSD: c_test.h,v 1.4 2004/12/20 11:34:26 otto Exp $ */ 9 /* $OpenBSD: tty.h,v 1.5 2004/12/20 11:34:26 otto Exp $ */ 10 11 /*- 12 * Copyright 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 13 * 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018 14 * mirabilos <m (at) mirbsd.org> 15 * 16 * Provided that these terms and disclaimer and all copyright notices 17 * are retained or reproduced in an accompanying document, permission 18 * is granted to deal in this work without restriction, including un 19 * limited rights to use, publicly perform, distribute, sell, modify, 20 * merge, give away, or sublicence. 21 * 22 * This work is provided AS IS and WITHOUT WARRANTY of any kind, to 23 * the utmost extent permitted by applicable law, neither express nor 24 * implied; without malicious intent or gross negligence. In no event 25 * may a licensor, author or contributor be held liable for indirect, 26 * direct, other damage, loss, or other issues arising in any way out 27 * of dealing in the work, even if advised of the possibility of such 28 * damage or existence of a defect, except proven that it results out 29 * of said persons immediate fault when using the work as intended. 30 */ 31 32 #ifdef __dietlibc__ 33 /* XXX imake style */ 34 #define _BSD_SOURCE /* live, BSD, live */ 35 #endif 36 37 #if HAVE_SYS_PARAM_H 38 #include <sys/param.h> 39 #endif 40 #include <sys/types.h> 41 #if HAVE_BOTH_TIME_H 42 #include <sys/time.h> 43 #include <time.h> 44 #elif HAVE_SYS_TIME_H 45 #include <sys/time.h> 46 #elif HAVE_TIME_H 47 #include <time.h> 48 #endif 49 #include <sys/ioctl.h> 50 #if HAVE_SYS_SYSMACROS_H 51 #include <sys/sysmacros.h> 52 #endif 53 #if HAVE_SYS_MKDEV_H 54 #include <sys/mkdev.h> 55 #endif 56 #if HAVE_SYS_MMAN_H 57 #include <sys/mman.h> 58 #endif 59 #if HAVE_SYS_RESOURCE_H 60 #include <sys/resource.h> 61 #endif 62 #include <sys/stat.h> 63 #include <sys/wait.h> 64 #include <dirent.h> 65 #include <errno.h> 66 #include <fcntl.h> 67 #if HAVE_IO_H 68 #include <io.h> 69 #endif 70 #if HAVE_LIBGEN_H 71 #include <libgen.h> 72 #endif 73 #if HAVE_LIBUTIL_H 74 #include <libutil.h> 75 #endif 76 #include <limits.h> 77 #if HAVE_PATHS_H 78 #include <paths.h> 79 #endif 80 #include <pwd.h> 81 #include <setjmp.h> 82 #include <signal.h> 83 #include <stdarg.h> 84 #include <stddef.h> 85 #if HAVE_STDINT_H 86 #include <stdint.h> 87 #endif 88 #include <stdio.h> 89 #include <stdlib.h> 90 #include <string.h> 91 #if HAVE_STRINGS_H 92 #include <strings.h> 93 #endif 94 #if HAVE_TERMIOS_H 95 #include <termios.h> 96 #else 97 /* shudder */ 98 #include <termio.h> 99 #endif 100 #ifdef _ISC_UNIX 101 /* XXX imake style */ 102 #include <sys/sioctl.h> 103 #endif 104 #if HAVE_ULIMIT_H 105 #include <ulimit.h> 106 #endif 107 #include <unistd.h> 108 #if HAVE_VALUES_H 109 #include <values.h> 110 #endif 111 #ifdef MIRBSD_BOOTFLOPPY 112 #include <wchar.h> 113 #endif 114 115 /* monkey-patch known-bad offsetof versions to quell a warning */ 116 #if (defined(__KLIBC__) || defined(__dietlibc__)) && \ 117 ((defined(__GNUC__) && (__GNUC__ > 3)) || defined(__NWCC__)) 118 #undef offsetof 119 #define offsetof(s, e) __builtin_offsetof(s, e) 120 #endif 121 122 #undef __attribute__ 123 #if HAVE_ATTRIBUTE_BOUNDED 124 #define MKSH_A_BOUNDED(x,y,z) __attribute__((__bounded__(x, y, z))) 125 #else 126 #define MKSH_A_BOUNDED(x,y,z) /* nothing */ 127 #endif 128 #if HAVE_ATTRIBUTE_FORMAT 129 #define MKSH_A_FORMAT(x,y,z) __attribute__((__format__(x, y, z))) 130 #else 131 #define MKSH_A_FORMAT(x,y,z) /* nothing */ 132 #endif 133 #if HAVE_ATTRIBUTE_NORETURN 134 #define MKSH_A_NORETURN __attribute__((__noreturn__)) 135 #else 136 #define MKSH_A_NORETURN /* nothing */ 137 #endif 138 #if HAVE_ATTRIBUTE_PURE 139 #define MKSH_A_PURE __attribute__((__pure__)) 140 #else 141 #define MKSH_A_PURE /* nothing */ 142 #endif 143 #if HAVE_ATTRIBUTE_UNUSED 144 #define MKSH_A_UNUSED __attribute__((__unused__)) 145 #else 146 #define MKSH_A_UNUSED /* nothing */ 147 #endif 148 #if HAVE_ATTRIBUTE_USED 149 #define MKSH_A_USED __attribute__((__used__)) 150 #else 151 #define MKSH_A_USED /* nothing */ 152 #endif 153 154 #if defined(MirBSD) && (MirBSD >= 0x09A1) && \ 155 defined(__ELF__) && defined(__GNUC__) && \ 156 !defined(__llvm__) && !defined(__NWCC__) 157 /* 158 * We got usable __IDSTRING __COPYRIGHT __RCSID __SCCSID macros 159 * which work for all cases; no need to redefine them using the 160 * "portable" macros from below when we might have the "better" 161 * gcc+ELF specific macros or other system dependent ones. 162 */ 163 #else 164 #undef __IDSTRING 165 #undef __IDSTRING_CONCAT 166 #undef __IDSTRING_EXPAND 167 #undef __COPYRIGHT 168 #undef __RCSID 169 #undef __SCCSID 170 #define __IDSTRING_CONCAT(l,p) __LINTED__ ## l ## _ ## p 171 #define __IDSTRING_EXPAND(l,p) __IDSTRING_CONCAT(l,p) 172 #ifdef MKSH_DONT_EMIT_IDSTRING 173 #define __IDSTRING(prefix, string) /* nothing */ 174 #else 175 #define __IDSTRING(prefix, string) \ 176 static const char __IDSTRING_EXPAND(__LINE__,prefix) [] \ 177 MKSH_A_USED = "@(""#)" #prefix ": " string 178 #endif 179 #define __COPYRIGHT(x) __IDSTRING(copyright,x) 180 #define __RCSID(x) __IDSTRING(rcsid,x) 181 #define __SCCSID(x) __IDSTRING(sccsid,x) 182 #endif 183 184 #ifdef EXTERN 185 __RCSID("$MirOS: src/bin/mksh/sh.h,v 1.870 2019/03/01 16:18:14 tg Exp $"); 186 #endif 187 #define MKSH_VERSION "R57 2019/03/01" 188 189 /* arithmetic types: C implementation */ 190 #if !HAVE_CAN_INTTYPES 191 #if !HAVE_CAN_UCBINTS 192 typedef signed int int32_t; 193 typedef unsigned int uint32_t; 194 #else 195 typedef u_int32_t uint32_t; 196 #endif 197 #endif 198 199 /* arithmetic types: shell arithmetics */ 200 #ifdef MKSH_LEGACY_MODE 201 /* 202 * POSIX demands these to be the C environment's long type 203 */ 204 typedef long mksh_ari_t; 205 typedef unsigned long mksh_uari_t; 206 #else 207 /* 208 * These types are exactly 32 bit wide; signed and unsigned 209 * integer wraparound, even across division and modulo, for 210 * any shell code using them, is guaranteed. 211 */ 212 typedef int32_t mksh_ari_t; 213 typedef uint32_t mksh_uari_t; 214 #endif 215 216 /* boolean type (no <stdbool.h> deliberately) */ 217 typedef unsigned char mksh_bool; 218 #undef bool 219 /* false MUST equal the same 0 as written by static storage initialisation */ 220 #undef false 221 #undef true 222 /* access macros for boolean type */ 223 #define bool mksh_bool 224 /* values must have identity mapping between mksh_bool and short */ 225 #define false 0 226 #define true 1 227 /* make any-type into bool or short */ 228 #define tobool(cond) ((cond) ? true : false) 229 230 /* char (octet) type: C implementation */ 231 #if !HAVE_CAN_INT8TYPE 232 #if !HAVE_CAN_UCBINT8 233 typedef unsigned char uint8_t; 234 #else 235 typedef u_int8_t uint8_t; 236 #endif 237 #endif 238 239 /* other standard types */ 240 241 #if !HAVE_RLIM_T 242 typedef unsigned long rlim_t; 243 #endif 244 245 #if !HAVE_SIG_T 246 #undef sig_t 247 typedef void (*sig_t)(int); 248 #endif 249 250 #ifdef MKSH_TYPEDEF_SIG_ATOMIC_T 251 typedef MKSH_TYPEDEF_SIG_ATOMIC_T sig_atomic_t; 252 #endif 253 254 #ifdef MKSH_TYPEDEF_SSIZE_T 255 typedef MKSH_TYPEDEF_SSIZE_T ssize_t; 256 #endif 257 258 /* un-do vendor damage */ 259 260 #undef BAD /* AIX defines that somewhere */ 261 #undef PRINT /* LynxOS defines that somewhere */ 262 #undef flock /* SCO UnixWare defines that to flock64 but ENOENT */ 263 264 265 #ifndef MKSH_INCLUDES_ONLY 266 267 /* EBCDIC fun */ 268 269 /* see the large comment in shf.c for an EBCDIC primer */ 270 271 #if defined(MKSH_FOR_Z_OS) && defined(__MVS__) && defined(__IBMC__) && defined(__CHARSET_LIB) 272 # if !__CHARSET_LIB && !defined(MKSH_EBCDIC) 273 # error "Please compile with Build.sh -E for EBCDIC!" 274 # endif 275 # if __CHARSET_LIB && defined(MKSH_EBCDIC) 276 # error "Please compile without -E argument to Build.sh for ASCII!" 277 # endif 278 # if __CHARSET_LIB && !defined(_ENHANCED_ASCII_EXT) 279 /* go all-out on ASCII */ 280 # define _ENHANCED_ASCII_EXT 0xFFFFFFFF 281 # endif 282 #endif 283 284 /* extra types */ 285 286 /* getrusage does not exist on OS/2 kLIBC */ 287 #if !HAVE_GETRUSAGE && !defined(__OS2__) 288 #undef rusage 289 #undef RUSAGE_SELF 290 #undef RUSAGE_CHILDREN 291 #define rusage mksh_rusage 292 #define RUSAGE_SELF 0 293 #define RUSAGE_CHILDREN -1 294 295 struct rusage { 296 struct timeval ru_utime; 297 struct timeval ru_stime; 298 }; 299 #endif 300 301 /* extra macros */ 302 303 #ifndef timerclear 304 #define timerclear(tvp) \ 305 do { \ 306 (tvp)->tv_sec = (tvp)->tv_usec = 0; \ 307 } while (/* CONSTCOND */ 0) 308 #endif 309 #ifndef timeradd 310 #define timeradd(tvp, uvp, vvp) \ 311 do { \ 312 (vvp)->tv_sec = (tvp)->tv_sec + (uvp)->tv_sec; \ 313 (vvp)->tv_usec = (tvp)->tv_usec + (uvp)->tv_usec; \ 314 if ((vvp)->tv_usec >= 1000000) { \ 315 (vvp)->tv_sec++; \ 316 (vvp)->tv_usec -= 1000000; \ 317 } \ 318 } while (/* CONSTCOND */ 0) 319 #endif 320 #ifndef timersub 321 #define timersub(tvp, uvp, vvp) \ 322 do { \ 323 (vvp)->tv_sec = (tvp)->tv_sec - (uvp)->tv_sec; \ 324 (vvp)->tv_usec = (tvp)->tv_usec - (uvp)->tv_usec; \ 325 if ((vvp)->tv_usec < 0) { \ 326 (vvp)->tv_sec--; \ 327 (vvp)->tv_usec += 1000000; \ 328 } \ 329 } while (/* CONSTCOND */ 0) 330 #endif 331 332 #ifdef MKSH__NO_PATH_MAX 333 #undef PATH_MAX 334 #else 335 #ifndef PATH_MAX 336 #ifdef MAXPATHLEN 337 #define PATH_MAX MAXPATHLEN 338 #else 339 #define PATH_MAX 1024 340 #endif 341 #endif 342 #endif 343 #ifndef SIZE_MAX 344 #ifdef SIZE_T_MAX 345 #define SIZE_MAX SIZE_T_MAX 346 #else 347 #define SIZE_MAX ((size_t)-1) 348 #endif 349 #endif 350 #ifndef S_ISLNK 351 #define S_ISLNK(m) ((m & 0170000) == 0120000) 352 #endif 353 #ifndef S_ISSOCK 354 #define S_ISSOCK(m) ((m & 0170000) == 0140000) 355 #endif 356 #if !defined(S_ISCDF) && defined(S_CDF) 357 #define S_ISCDF(m) (S_ISDIR(m) && ((m) & S_CDF)) 358 #endif 359 #ifndef DEFFILEMODE 360 #define DEFFILEMODE (S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP|S_IROTH|S_IWOTH) 361 #endif 362 363 364 /* determine ksh_NSIG: first, use the traditional definitions */ 365 #undef ksh_NSIG 366 #if defined(NSIG) 367 #define ksh_NSIG (NSIG) 368 #elif defined(_NSIG) 369 #define ksh_NSIG (_NSIG) 370 #elif defined(SIGMAX) 371 #define ksh_NSIG (SIGMAX + 1) 372 #elif defined(_SIGMAX) 373 #define ksh_NSIG (_SIGMAX + 1) 374 #elif defined(NSIG_MAX) 375 #define ksh_NSIG (NSIG_MAX) 376 #elif defined(MKSH_FOR_Z_OS) 377 #define ksh_NSIG 40 378 #else 379 # error Please have your platform define NSIG. 380 #endif 381 /* range-check them */ 382 #if (ksh_NSIG < 1) 383 # error Your NSIG value is not positive. 384 #undef ksh_NSIG 385 #endif 386 /* second, see if the new POSIX definition is available */ 387 #ifdef NSIG_MAX 388 #if (NSIG_MAX < 2) 389 /* and usable */ 390 # error Your NSIG_MAX value is too small. 391 #undef NSIG_MAX 392 #elif (ksh_NSIG > NSIG_MAX) 393 /* and realistic */ 394 # error Your NSIG value is larger than your NSIG_MAX value. 395 #undef NSIG_MAX 396 #else 397 /* since its usable, prefer it */ 398 #undef ksh_NSIG 399 #define ksh_NSIG (NSIG_MAX) 400 #endif 401 /* if NSIG_MAX is now still defined, use sysconf(_SC_NSIG) at runtime */ 402 #endif 403 /* third, for cpp without the error directive, default */ 404 #ifndef ksh_NSIG 405 #define ksh_NSIG 64 406 #endif 407 408 #define ksh_sigmask(sig) (((sig) < 1 || (sig) > 127) ? 255 : 128 + (sig)) 409 410 411 /* OS-dependent additions (functions, variables, by OS) */ 412 413 #ifdef MKSH_EXE_EXT 414 #undef MKSH_EXE_EXT 415 #define MKSH_EXE_EXT ".exe" 416 #else 417 #define MKSH_EXE_EXT "" 418 #endif 419 420 #ifdef __OS2__ 421 #define MKSH_UNIXROOT "/@unixroot" 422 #else 423 #define MKSH_UNIXROOT "" 424 #endif 425 426 #ifdef MKSH_DOSPATH 427 #ifndef __GNUC__ 428 # error GCC extensions needed later on 429 #endif 430 #define MKSH_PATHSEPS ";" 431 #define MKSH_PATHSEPC ';' 432 #else 433 #define MKSH_PATHSEPS ":" 434 #define MKSH_PATHSEPC ':' 435 #endif 436 437 #if !HAVE_FLOCK_DECL 438 extern int flock(int, int); 439 #endif 440 441 #if !HAVE_GETTIMEOFDAY 442 #define mksh_TIME(tv) do { \ 443 (tv).tv_usec = 0; \ 444 (tv).tv_sec = time(NULL); \ 445 } while (/* CONSTCOND */ 0) 446 #else 447 #define mksh_TIME(tv) gettimeofday(&(tv), NULL) 448 #endif 449 450 #if !HAVE_GETRUSAGE 451 extern int getrusage(int, struct rusage *); 452 #endif 453 454 #if !HAVE_MEMMOVE 455 /* we assume either memmove or bcopy exist, at the moment */ 456 #define memmove(dst, src, len) bcopy((src), (dst), (len)) 457 #endif 458 459 #if !HAVE_REVOKE_DECL 460 extern int revoke(const char *); 461 #endif 462 463 #if defined(DEBUG) || !HAVE_STRERROR 464 #undef strerror 465 #define strerror /* poisoned */ dontuse_strerror 466 #define cstrerror /* replaced */ cstrerror 467 extern const char *cstrerror(int); 468 #else 469 #define cstrerror(errnum) ((const char *)strerror(errnum)) 470 #endif 471 472 #if !HAVE_STRLCPY 473 size_t strlcpy(char *, const char *, size_t); 474 #endif 475 476 #ifdef __INTERIX 477 /* XXX imake style */ 478 #define makedev mkdev 479 extern int __cdecl seteuid(uid_t); 480 extern int __cdecl setegid(gid_t); 481 #endif 482 483 #if defined(__COHERENT__) 484 #ifndef O_ACCMODE 485 /* this need not work everywhere, take care */ 486 #define O_ACCMODE (O_RDONLY | O_WRONLY | O_RDWR) 487 #endif 488 #endif 489 490 #ifndef O_BINARY 491 #define O_BINARY 0 492 #endif 493 494 #ifndef O_MAYEXEC 495 #define O_MAYEXEC 0 496 #endif 497 498 #ifdef MKSH__NO_SYMLINK 499 #undef S_ISLNK 500 #define S_ISLNK(m) (/* CONSTCOND */ 0) 501 #define mksh_lstat stat 502 #else 503 #define mksh_lstat lstat 504 #endif 505 506 #if HAVE_TERMIOS_H 507 #define mksh_ttyst struct termios 508 #define mksh_tcget(fd,st) tcgetattr((fd), (st)) 509 #define mksh_tcset(fd,st) tcsetattr((fd), TCSADRAIN, (st)) 510 #else 511 #define mksh_ttyst struct termio 512 #define mksh_tcget(fd,st) ioctl((fd), TCGETA, (st)) 513 #define mksh_tcset(fd,st) ioctl((fd), TCSETAW, (st)) 514 #endif 515 516 #ifndef ISTRIP 517 #define ISTRIP 0 518 #endif 519 520 #ifdef MKSH_EBCDIC 521 #define KSH_BEL '\a' 522 #define KSH_ESC 047 523 #define KSH_ESC_STRING "\047" 524 #define KSH_VTAB '\v' 525 #else 526 /* 527 * According to the comments in pdksh, \007 seems to be more portable 528 * than \a (HP-UX cc, Ultrix cc, old pcc, etc.) so we avoid the escape 529 * sequence if ASCII can be assumed. 530 */ 531 #define KSH_BEL 7 532 #define KSH_ESC 033 533 #define KSH_ESC_STRING "\033" 534 #define KSH_VTAB 11 535 #endif 536 537 538 /* some useful #defines */ 539 #ifdef EXTERN 540 # define E_INIT(i) = i 541 #else 542 # define E_INIT(i) 543 # define EXTERN extern 544 # define EXTERN_DEFINED 545 #endif 546 547 /* define bit in flag */ 548 #define BIT(i) (1U << (i)) 549 #define NELEM(a) (sizeof(a) / sizeof((a)[0])) 550 551 /* 552 * Make MAGIC a char that might be printed to make bugs more obvious, but 553 * not a char that is used often. Also, can't use the high bit as it causes 554 * portability problems (calling strchr(x, 0x80 | 'x') is error prone). 555 * 556 * MAGIC can be followed by MAGIC (to escape the octet itself) or one of: 557 * ' !)*,-?[]{|}' 0x80|' !*+?@' (probably hysteric raisins abound) 558 * 559 * The |0x80 is likely unsafe on EBCDIC :( though the listed chars are 560 * low-bit7 at least on cp1047 so YMMV 561 */ 562 #define MAGIC KSH_BEL /* prefix for *?[!{,} during expand */ 563 #define ISMAGIC(c) (ord(c) == ORD(MAGIC)) 564 565 EXTERN const char *safe_prompt; /* safe prompt if PS1 substitution fails */ 566 567 #ifdef MKSH_LEGACY_MODE 568 #define KSH_VERSIONNAME_ISLEGACY "LEGACY" 569 #else 570 #define KSH_VERSIONNAME_ISLEGACY "MIRBSD" 571 #endif 572 #ifdef MKSH_WITH_TEXTMODE 573 #define KSH_VERSIONNAME_TEXTMODE " +TEXTMODE" 574 #else 575 #define KSH_VERSIONNAME_TEXTMODE "" 576 #endif 577 #ifdef MKSH_EBCDIC 578 #define KSH_VERSIONNAME_EBCDIC " +EBCDIC" 579 #else 580 #define KSH_VERSIONNAME_EBCDIC "" 581 #endif 582 #ifndef KSH_VERSIONNAME_VENDOR_EXT 583 #define KSH_VERSIONNAME_VENDOR_EXT "" 584 #endif 585 EXTERN const char initvsn[] E_INIT("KSH_VERSION=@(#)" KSH_VERSIONNAME_ISLEGACY \ 586 " KSH " MKSH_VERSION KSH_VERSIONNAME_EBCDIC KSH_VERSIONNAME_TEXTMODE \ 587 KSH_VERSIONNAME_VENDOR_EXT); 588 #define KSH_VERSION (initvsn + /* "KSH_VERSION=@(#)" */ 16) 589 590 EXTERN const char digits_uc[] E_INIT("0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ"); 591 EXTERN const char digits_lc[] E_INIT("0123456789abcdefghijklmnopqrstuvwxyz"); 592 593 /* 594 * Evil hack for const correctness due to API brokenness 595 */ 596 union mksh_cchack { 597 char *rw; 598 const char *ro; 599 }; 600 union mksh_ccphack { 601 char **rw; 602 const char **ro; 603 }; 604 605 /* 606 * Evil hack since casting uint to sint is implementation-defined 607 */ 608 typedef union { 609 mksh_ari_t i; 610 mksh_uari_t u; 611 } mksh_ari_u; 612 613 /* for const debugging */ 614 #if defined(DEBUG) && defined(__GNUC__) && !defined(__ICC) && \ 615 !defined(__INTEL_COMPILER) && !defined(__SUNPRO_C) 616 char *ucstrchr(char *, int); 617 char *ucstrstr(char *, const char *); 618 #undef strchr 619 #define strchr ucstrchr 620 #define strstr ucstrstr 621 #define cstrchr(s,c) ({ \ 622 union mksh_cchack in, out; \ 623 \ 624 in.ro = (s); \ 625 out.rw = ucstrchr(in.rw, (c)); \ 626 (out.ro); \ 627 }) 628 #define cstrstr(b,l) ({ \ 629 union mksh_cchack in, out; \ 630 \ 631 in.ro = (b); \ 632 out.rw = ucstrstr(in.rw, (l)); \ 633 (out.ro); \ 634 }) 635 #define vstrchr(s,c) (cstrchr((s), (c)) != NULL) 636 #define vstrstr(b,l) (cstrstr((b), (l)) != NULL) 637 #else /* !DEBUG, !gcc */ 638 #define cstrchr(s,c) ((const char *)strchr((s), (c))) 639 #define cstrstr(s,c) ((const char *)strstr((s), (c))) 640 #define vstrchr(s,c) (strchr((s), (c)) != NULL) 641 #define vstrstr(b,l) (strstr((b), (l)) != NULL) 642 #endif 643 644 #if defined(DEBUG) || defined(__COVERITY__) 645 #ifndef DEBUG_LEAKS 646 #define DEBUG_LEAKS 647 #endif 648 #endif 649 650 #if (!defined(MKSH_BUILDMAKEFILE4BSD) && !defined(MKSH_BUILDSH)) || (MKSH_BUILD_R != 571) 651 #error Must run Build.sh to compile this. 652 extern void thiswillneverbedefinedIhope(void); 653 int 654 im_sorry_dave(void) 655 { 656 /* Im sorry, Dave. Im afraid I cant do that. */ 657 return (thiswillneverbedefinedIhope()); 658 } 659 #endif 660 661 /* use this ipv strchr(s, 0) but no side effects in s! */ 662 #define strnul(s) ((s) + strlen((const void *)s)) 663 664 #define utf_ptradjx(src, dst) do { \ 665 (dst) = (src) + utf_ptradj(src); \ 666 } while (/* CONSTCOND */ 0) 667 668 #if defined(MKSH_SMALL) && !defined(MKSH_SMALL_BUT_FAST) 669 #define strdupx(d, s, ap) do { \ 670 (d) = strdup_i((s), (ap)); \ 671 } while (/* CONSTCOND */ 0) 672 #define strndupx(d, s, n, ap) do { \ 673 (d) = strndup_i((s), (n), (ap)); \ 674 } while (/* CONSTCOND */ 0) 675 #else 676 /* be careful to evaluate arguments only once! */ 677 #define strdupx(d, s, ap) do { \ 678 const char *strdup_src = (const void *)(s); \ 679 char *strdup_dst = NULL; \ 680 \ 681 if (strdup_src != NULL) { \ 682 size_t strdup_len = strlen(strdup_src) + 1; \ 683 strdup_dst = alloc(strdup_len, (ap)); \ 684 memcpy(strdup_dst, strdup_src, strdup_len); \ 685 } \ 686 (d) = strdup_dst; \ 687 } while (/* CONSTCOND */ 0) 688 #define strndupx(d, s, n, ap) do { \ 689 const char *strdup_src = (const void *)(s); \ 690 char *strdup_dst = NULL; \ 691 \ 692 if (strdup_src != NULL) { \ 693 size_t strndup_len = (n); \ 694 strdup_dst = alloc(strndup_len + 1, (ap)); \ 695 memcpy(strdup_dst, strdup_src, strndup_len); \ 696 strdup_dst[strndup_len] = '\0'; \ 697 } \ 698 (d) = strdup_dst; \ 699 } while (/* CONSTCOND */ 0) 700 #endif 701 702 #ifdef MKSH_SMALL 703 #ifndef MKSH_NOPWNAM 704 #define MKSH_NOPWNAM /* defined */ 705 #endif 706 #ifndef MKSH_S_NOVI 707 #define MKSH_S_NOVI 1 708 #endif 709 #endif 710 711 #ifndef MKSH_S_NOVI 712 #define MKSH_S_NOVI 0 713 #endif 714 715 #if defined(MKSH_NOPROSPECTOFWORK) && !defined(MKSH_UNEMPLOYED) 716 #define MKSH_UNEMPLOYED 1 717 #endif 718 719 #define NUFILE 32 /* Number of user-accessible files */ 720 #define FDBASE 10 /* First file usable by Shell */ 721 722 /* 723 * simple grouping allocator 724 */ 725 726 727 /* 0. OS API: where to get memory from and how to free it (grouped) */ 728 729 /* malloc(3)/realloc(3) -> free(3) for use by the memory allocator */ 730 #define malloc_osi(sz) malloc(sz) 731 #define realloc_osi(p,sz) realloc((p), (sz)) 732 #define free_osimalloc(p) free(p) 733 734 /* malloc(3)/realloc(3) -> free(3) for use by mksh code */ 735 #define malloc_osfunc(sz) malloc(sz) 736 #define realloc_osfunc(p,sz) realloc((p), (sz)) 737 #define free_osfunc(p) free(p) 738 739 #if HAVE_MKNOD 740 /* setmode(3) -> free(3) */ 741 #define free_ossetmode(p) free(p) 742 #endif 743 744 #ifdef MKSH__NO_PATH_MAX 745 /* GNU libc: get_current_dir_name(3) -> free(3) */ 746 #define free_gnu_gcdn(p) free(p) 747 #endif 748 749 750 /* 1. internal structure */ 751 struct lalloc_common { 752 struct lalloc_common *next; 753 }; 754 755 #ifdef MKSH_ALLOC_CATCH_UNDERRUNS 756 struct lalloc_item { 757 struct lalloc_common *next; 758 size_t len; 759 char dummy[8192 - sizeof(struct lalloc_common *) - sizeof(size_t)]; 760 }; 761 #endif 762 763 /* 2. sizes */ 764 #ifdef MKSH_ALLOC_CATCH_UNDERRUNS 765 #define ALLOC_ITEM struct lalloc_item 766 #define ALLOC_OVERHEAD 0 767 #else 768 #define ALLOC_ITEM struct lalloc_common 769 #define ALLOC_OVERHEAD (sizeof(ALLOC_ITEM)) 770 #endif 771 772 /* 3. group structure */ 773 typedef struct lalloc_common Area; 774 775 776 EXTERN Area aperm; /* permanent object space */ 777 #define APERM &aperm 778 #define ATEMP &e->area 779 780 /* 781 * flags (the order of these enums MUST match the order in misc.c(options[])) 782 */ 783 enum sh_flag { 784 #define SHFLAGS_ENUMS 785 #include "sh_flags.gen" 786 FNFLAGS /* (place holder: how many flags are there) */ 787 }; 788 789 #define Flag(f) (shell_flags[(int)(f)]) 790 #define UTFMODE Flag(FUNNYCODE) 791 792 /* 793 * parsing & execution environment 794 * 795 * note that kshlongjmp MUST NOT be passed 0 as second argument! 796 */ 797 #ifdef MKSH_NO_SIGSETJMP 798 #define kshjmp_buf jmp_buf 799 #define kshsetjmp(jbuf) _setjmp(jbuf) 800 #define kshlongjmp _longjmp 801 #else 802 #define kshjmp_buf sigjmp_buf 803 #define kshsetjmp(jbuf) sigsetjmp((jbuf), 0) 804 #define kshlongjmp siglongjmp 805 #endif 806 807 struct sretrace_info; 808 struct yyrecursive_state; 809 810 EXTERN struct sretrace_info *retrace_info; 811 EXTERN unsigned int subshell_nesting_type; 812 813 extern struct env { 814 ALLOC_ITEM alloc_INT; /* internal, do not touch */ 815 Area area; /* temporary allocation area */ 816 struct env *oenv; /* link to previous environment */ 817 struct block *loc; /* local variables and functions */ 818 short *savefd; /* original redirected fds */ 819 struct temp *temps; /* temp files */ 820 /* saved parser recursion state */ 821 struct yyrecursive_state *yyrecursive_statep; 822 kshjmp_buf jbuf; /* long jump back to env creator */ 823 uint8_t type; /* environment type - see below */ 824 uint8_t flags; /* EF_* */ 825 } *e; 826 827 /* struct env.type values */ 828 #define E_NONE 0 /* dummy environment */ 829 #define E_PARSE 1 /* parsing command # */ 830 #define E_FUNC 2 /* executing function # */ 831 #define E_INCL 3 /* including a file via . # */ 832 #define E_EXEC 4 /* executing command tree */ 833 #define E_LOOP 5 /* executing for/while # */ 834 #define E_ERRH 6 /* general error handler # */ 835 #define E_GONE 7 /* hidden in child */ 836 #define E_EVAL 8 /* running eval # */ 837 /* # indicates env has valid jbuf (see unwind()) */ 838 839 /* struct env.flag values */ 840 #define EF_BRKCONT_PASS BIT(1) /* set if E_LOOP must pass break/continue on */ 841 #define EF_FAKE_SIGDIE BIT(2) /* hack to get info from unwind to quitenv */ 842 843 /* Do breaks/continues stop at env type e? */ 844 #define STOP_BRKCONT(t) ((t) == E_NONE || (t) == E_PARSE || \ 845 (t) == E_FUNC || (t) == E_INCL) 846 /* Do returns stop at env type e? */ 847 #define STOP_RETURN(t) ((t) == E_FUNC || (t) == E_INCL) 848 849 /* values for kshlongjmp(e->jbuf, i) */ 850 /* note that i MUST NOT be zero */ 851 #define LRETURN 1 /* return statement */ 852 #define LEXIT 2 /* exit statement */ 853 #define LERROR 3 /* errorf() called */ 854 #define LLEAVE 4 /* untrappable exit/error */ 855 #define LINTR 5 /* ^C noticed */ 856 #define LBREAK 6 /* break statement */ 857 #define LCONTIN 7 /* continue statement */ 858 #define LSHELL 8 /* return to interactive shell() */ 859 #define LAEXPR 9 /* error in arithmetic expression */ 860 861 /* sort of shell global state */ 862 EXTERN pid_t procpid; /* PID of executing process */ 863 EXTERN int exstat; /* exit status */ 864 EXTERN int subst_exstat; /* exit status of last $(..)/`..` */ 865 EXTERN struct tbl *vp_pipest; /* global PIPESTATUS array */ 866 EXTERN short trap_exstat; /* exit status before running a trap */ 867 EXTERN uint8_t trap_nested; /* running nested traps */ 868 EXTERN uint8_t shell_flags[FNFLAGS]; 869 EXTERN const char *kshname; /* $0 */ 870 EXTERN struct { 871 uid_t kshuid_v; /* real UID of shell */ 872 uid_t ksheuid_v; /* effective UID of shell */ 873 gid_t kshgid_v; /* real GID of shell */ 874 gid_t kshegid_v; /* effective GID of shell */ 875 pid_t kshpgrp_v; /* process group of shell */ 876 pid_t kshppid_v; /* PID of parent of shell */ 877 pid_t kshpid_v; /* $$, shell PID */ 878 } rndsetupstate; 879 880 #define kshpid rndsetupstate.kshpid_v 881 #define kshpgrp rndsetupstate.kshpgrp_v 882 #define kshuid rndsetupstate.kshuid_v 883 #define ksheuid rndsetupstate.ksheuid_v 884 #define kshgid rndsetupstate.kshgid_v 885 #define kshegid rndsetupstate.kshegid_v 886 #define kshppid rndsetupstate.kshppid_v 887 888 889 /* option processing */ 890 #define OF_CMDLINE 0x01 /* command line */ 891 #define OF_SET 0x02 /* set builtin */ 892 #define OF_SPECIAL 0x04 /* a special variable changing */ 893 #define OF_INTERNAL 0x08 /* set internally by shell */ 894 #define OF_FIRSTTIME 0x10 /* as early as possible, once */ 895 #define OF_ANY (OF_CMDLINE | OF_SET | OF_SPECIAL | OF_INTERNAL) 896 897 /* null value for variable; comparison pointer for unset */ 898 EXTERN char null[] E_INIT(""); 899 900 /* string pooling: do we rely on the compiler? */ 901 #ifndef HAVE_STRING_POOLING 902 /* no, we use our own, saves quite some space */ 903 #elif HAVE_STRING_POOLING == 2 904 /* on demand */ 905 #ifdef __GNUC__ 906 /* only for GCC 4 or later, older ones can get by without */ 907 #if __GNUC__ < 4 908 #undef HAVE_STRING_POOLING 909 #endif 910 #else 911 /* not GCC, default to on */ 912 #endif 913 #elif HAVE_STRING_POOLING == 0 914 /* default to on, unless explicitly set to 0 */ 915 #undef HAVE_STRING_POOLING 916 #endif 917 918 #ifndef HAVE_STRING_POOLING /* helpers for pooled strings */ 919 EXTERN const char T4spaces[] E_INIT(" "); 920 #define T1space (Treal_sp2 + 5) 921 #define Tcolsp (Tf_sD_ + 2) 922 #define TC_IFSWS (TinitIFS + 4) 923 EXTERN const char TinitIFS[] E_INIT("IFS= \t\n"); 924 EXTERN const char TFCEDIT_dollaru[] E_INIT("${FCEDIT:-/bin/ed} $_"); 925 #define Tspdollaru (TFCEDIT_dollaru + 18) 926 EXTERN const char Tsgdot[] E_INIT("*=."); 927 EXTERN const char Taugo[] E_INIT("augo"); 928 EXTERN const char Tbracket[] E_INIT("["); 929 #define Tdot (Tsgdot + 2) 930 #define Talias (Tunalias + 2) 931 EXTERN const char Tbadnum[] E_INIT("bad number"); 932 #define Tbadsubst (Tfg_badsubst + 10) 933 EXTERN const char Tbg[] E_INIT("bg"); 934 EXTERN const char Tbad_bsize[] E_INIT("bad shf/buf/bsize"); 935 #define Tbsize (Tbad_bsize + 12) 936 EXTERN const char Tbad_sig_ss[] E_INIT("%s: bad signal '%s'"); 937 #define Tbad_sig_s (Tbad_sig_ss + 4) 938 EXTERN const char Tsgbreak[] E_INIT("*=break"); 939 #define Tbreak (Tsgbreak + 2) 940 EXTERN const char T__builtin[] E_INIT("-\\builtin"); 941 #define T_builtin (T__builtin + 1) 942 #define Tbuiltin (T__builtin + 2) 943 EXTERN const char Toomem[] E_INIT("can't allocate %zu data bytes"); 944 EXTERN const char Tcant_cd[] E_INIT("restricted shell - can't cd"); 945 EXTERN const char Tcant_find[] E_INIT("can't find"); 946 EXTERN const char Tcant_open[] E_INIT("can't open"); 947 #define Tbytes (Toomem + 24) 948 EXTERN const char Tbcat[] E_INIT("!cat"); 949 #define Tcat (Tbcat + 1) 950 #define Tcd (Tcant_cd + 25) 951 #define T_command (T_funny_command + 9) 952 #define Tcommand (T_funny_command + 10) 953 EXTERN const char Tsgcontinue[] E_INIT("*=continue"); 954 #define Tcontinue (Tsgcontinue + 2) 955 EXTERN const char Tcreate[] E_INIT("create"); 956 EXTERN const char TELIF_unexpected[] E_INIT("TELIF unexpected"); 957 EXTERN const char TEXECSHELL[] E_INIT("EXECSHELL"); 958 EXTERN const char Tdsgexport[] E_INIT("^*=export"); 959 #define Texport (Tdsgexport + 3) 960 #ifdef __OS2__ 961 EXTERN const char Textproc[] E_INIT("extproc"); 962 #endif 963 EXTERN const char Tfalse[] E_INIT("false"); 964 EXTERN const char Tfg[] E_INIT("fg"); 965 EXTERN const char Tfg_badsubst[] E_INIT("fileglob: bad substitution"); 966 #define Tfile (Tfile_fd + 20) 967 EXTERN const char Tfile_fd[] E_INIT("function definition file"); 968 EXTERN const char TFPATH[] E_INIT("FPATH"); 969 EXTERN const char T_function[] E_INIT(" function"); 970 #define Tfunction (T_function + 1) 971 EXTERN const char T_funny_command[] E_INIT("funny $()-command"); 972 EXTERN const char Tgetopts[] E_INIT("getopts"); 973 #define Thistory (Tnot_in_history + 7) 974 EXTERN const char Tintovfl[] E_INIT("integer overflow %zu %c %zu prevented"); 975 EXTERN const char Tinvname[] E_INIT("%s: invalid %s name"); 976 EXTERN const char Tjobs[] E_INIT("jobs"); 977 EXTERN const char Tjob_not_started[] E_INIT("job not started"); 978 EXTERN const char Tmksh[] E_INIT("mksh"); 979 #define Tname (Tinvname + 15) 980 EXTERN const char Tno_args[] E_INIT("missing argument"); 981 EXTERN const char Tno_OLDPWD[] E_INIT("no OLDPWD"); 982 EXTERN const char Tnot_ident[] E_INIT("is not an identifier"); 983 EXTERN const char Tnot_in_history[] E_INIT("not in history"); 984 EXTERN const char Tnot_found_s[] E_INIT("%s not found"); 985 #define Tnot_found (Tnot_found_s + 3) 986 #define Tnot_started (Tjob_not_started + 4) 987 #define TOLDPWD (Tno_OLDPWD + 3) 988 #define Topen (Tcant_open + 6) 989 #define TPATH (TFPATH + 1) 990 #define Tpv (TpVv + 1) 991 EXTERN const char TpVv[] E_INIT("Vpv"); 992 #define TPWD (Tno_OLDPWD + 6) 993 #define Tread (Tshf_read + 4) 994 EXTERN const char Tdsgreadonly[] E_INIT("^*=readonly"); 995 #define Treadonly (Tdsgreadonly + 3) 996 EXTERN const char Tredirection_dup[] E_INIT("can't finish (dup) redirection"); 997 #define Tredirection (Tredirection_dup + 19) 998 #define Treal_sp1 (Treal_sp2 + 1) 999 EXTERN const char Treal_sp2[] E_INIT(" real "); 1000 EXTERN const char Treq_arg[] E_INIT("requires an argument"); 1001 EXTERN const char Tselect[] E_INIT("select"); 1002 EXTERN const char Tsgset[] E_INIT("*=set"); 1003 #define Tset (Tf_parm + 18) 1004 #define Tsh (Tmksh + 2) 1005 #define TSHELL (TEXECSHELL + 4) 1006 #define Tshell (Ttoo_many_files + 23) 1007 EXTERN const char Tshf_read[] E_INIT("shf_read"); 1008 EXTERN const char Tshf_write[] E_INIT("shf_write"); 1009 EXTERN const char Tgsource[] E_INIT("=source"); 1010 #define Tsource (Tgsource + 1) 1011 EXTERN const char Tj_suspend[] E_INIT("j_suspend"); 1012 #define Tsuspend (Tj_suspend + 2) 1013 EXTERN const char Tsynerr[] E_INIT("syntax error"); 1014 EXTERN const char Ttime[] E_INIT("time"); 1015 EXTERN const char Ttoo_many_args[] E_INIT("too many arguments"); 1016 EXTERN const char Ttoo_many_files[] E_INIT("too many open files in shell"); 1017 EXTERN const char Ttrue[] E_INIT("true"); 1018 EXTERN const char Ttty_fd_dupof[] E_INIT("dup of tty fd"); 1019 #define Ttty_fd (Ttty_fd_dupof + 7) 1020 EXTERN const char Tdgtypeset[] E_INIT("^=typeset"); 1021 #define Ttypeset (Tdgtypeset + 2) 1022 #define Tugo (Taugo + 1) 1023 EXTERN const char Tunalias[] E_INIT("unalias"); 1024 #define Tunexpected (TELIF_unexpected + 6) 1025 EXTERN const char Tunexpected_type[] E_INIT("%s: unexpected %s type %d"); 1026 EXTERN const char Tunknown_option[] E_INIT("unknown option"); 1027 EXTERN const char Tunwind[] E_INIT("unwind"); 1028 #define Tuser_sp1 (Tuser_sp2 + 1) 1029 EXTERN const char Tuser_sp2[] E_INIT(" user "); 1030 #define Twrite (Tshf_write + 4) 1031 EXTERN const char Tf__S[] E_INIT(" %S"); 1032 #define Tf__d (Tunexpected_type + 22) 1033 EXTERN const char Tf__ss[] E_INIT(" %s%s"); 1034 #define Tf__sN (Tf_s_s_sN + 5) 1035 EXTERN const char Tf_sSs[] E_INIT("%s/%s"); 1036 #define Tf_T (Tf_s_T + 3) 1037 EXTERN const char Tf_dN[] E_INIT("%d\n"); 1038 EXTERN const char Tf_s_[] E_INIT("%s "); 1039 EXTERN const char Tf_s_T[] E_INIT("%s %T"); 1040 EXTERN const char Tf_s_s_sN[] E_INIT("%s %s %s\n"); 1041 #define Tf_s_s (Tf_sD_s_s + 4) 1042 #define Tf_s_sD_s (Tf_cant_ss_s + 6) 1043 EXTERN const char Tf_optfoo[] E_INIT("%s%s-%c: %s"); 1044 EXTERN const char Tf_sD_[] E_INIT("%s: "); 1045 EXTERN const char Tf_szs[] E_INIT("%s: %zd %s"); 1046 EXTERN const char Tf_parm[] E_INIT("%s: parameter not set"); 1047 EXTERN const char Tf_coproc[] E_INIT("-p: %s"); 1048 EXTERN const char Tf_cant_s[] E_INIT("%s: can't %s"); 1049 EXTERN const char Tf_cant_ss_s[] E_INIT("can't %s %s: %s"); 1050 EXTERN const char Tf_heredoc[] E_INIT("here document '%s' unclosed"); 1051 #if HAVE_MKNOD 1052 EXTERN const char Tf_nonnum[] E_INIT("non-numeric %s %s '%s'"); 1053 #endif 1054 EXTERN const char Tf_S_[] E_INIT("%S "); 1055 #define Tf_S (Tf__S + 1) 1056 #define Tf_lu (Tf_toolarge + 17) 1057 EXTERN const char Tf_toolarge[] E_INIT("%s %s too large: %lu"); 1058 EXTERN const char Tf_ldfailed[] E_INIT("%s %s(%d, %ld) failed: %s"); 1059 #define Tf_ss (Tf_sss + 2) 1060 EXTERN const char Tf_sss[] E_INIT("%s%s%s"); 1061 EXTERN const char Tf_sD_s_sD_s[] E_INIT("%s: %s %s: %s"); 1062 EXTERN const char Tf_toomany[] E_INIT("too many %ss"); 1063 EXTERN const char Tf_sd[] E_INIT("%s %d"); 1064 #define Tf_s (Tf_temp + 28) 1065 EXTERN const char Tft_end[] E_INIT("%;"); 1066 EXTERN const char Tft_R[] E_INIT("%R"); 1067 #define Tf_d (Tunexpected_type + 23) 1068 EXTERN const char Tf_sD_s_qs[] E_INIT("%s: %s '%s'"); 1069 EXTERN const char Tf_ro[] E_INIT("read-only: %s"); 1070 EXTERN const char Tf_flags[] E_INIT("%s: flags 0x%X"); 1071 EXTERN const char Tf_temp[] E_INIT("can't %s temporary file %s: %s"); 1072 EXTERN const char Tf_ssfaileds[] E_INIT("%s: %s failed: %s"); 1073 EXTERN const char Tf_sD_sD_s[] E_INIT("%s: %s: %s"); 1074 EXTERN const char Tf__c_[] E_INIT("-%c "); 1075 EXTERN const char Tf_sD_s_s[] E_INIT("%s: %s %s"); 1076 #define Tf_sN (Tf_s_s_sN + 6) 1077 #define Tf_sD_s (Tf_temp + 24) 1078 EXTERN const char T_devtty[] E_INIT("/dev/tty"); 1079 #else /* helpers for string pooling */ 1080 #define T4spaces " " 1081 #define T1space " " 1082 #define Tcolsp ": " 1083 #define TC_IFSWS " \t\n" 1084 #define TinitIFS "IFS= \t\n" 1085 #define TFCEDIT_dollaru "${FCEDIT:-/bin/ed} $_" 1086 #define Tspdollaru " $_" 1087 #define Tsgdot "*=." 1088 #define Taugo "augo" 1089 #define Tbracket "[" 1090 #define Tdot "." 1091 #define Talias "alias" 1092 #define Tbadnum "bad number" 1093 #define Tbadsubst "bad substitution" 1094 #define Tbg "bg" 1095 #define Tbad_bsize "bad shf/buf/bsize" 1096 #define Tbsize "bsize" 1097 #define Tbad_sig_ss "%s: bad signal '%s'" 1098 #define Tbad_sig_s "bad signal '%s'" 1099 #define Tsgbreak "*=break" 1100 #define Tbreak "break" 1101 #define T__builtin "-\\builtin" 1102 #define T_builtin "\\builtin" 1103 #define Tbuiltin "builtin" 1104 #define Toomem "can't allocate %zu data bytes" 1105 #define Tcant_cd "restricted shell - can't cd" 1106 #define Tcant_find "can't find" 1107 #define Tcant_open "can't open" 1108 #define Tbytes "bytes" 1109 #define Tbcat "!cat" 1110 #define Tcat "cat" 1111 #define Tcd "cd" 1112 #define T_command "-command" 1113 #define Tcommand "command" 1114 #define Tsgcontinue "*=continue" 1115 #define Tcontinue "continue" 1116 #define Tcreate "create" 1117 #define TELIF_unexpected "TELIF unexpected" 1118 #define TEXECSHELL "EXECSHELL" 1119 #define Tdsgexport "^*=export" 1120 #define Texport "export" 1121 #ifdef __OS2__ 1122 #define Textproc "extproc" 1123 #endif 1124 #define Tfalse "false" 1125 #define Tfg "fg" 1126 #define Tfg_badsubst "fileglob: bad substitution" 1127 #define Tfile "file" 1128 #define Tfile_fd "function definition file" 1129 #define TFPATH "FPATH" 1130 #define T_function " function" 1131 #define Tfunction "function" 1132 #define T_funny_command "funny $()-command" 1133 #define Tgetopts "getopts" 1134 #define Thistory "history" 1135 #define Tintovfl "integer overflow %zu %c %zu prevented" 1136 #define Tinvname "%s: invalid %s name" 1137 #define Tjobs "jobs" 1138 #define Tjob_not_started "job not started" 1139 #define Tmksh "mksh" 1140 #define Tname "name" 1141 #define Tno_args "missing argument" 1142 #define Tno_OLDPWD "no OLDPWD" 1143 #define Tnot_ident "is not an identifier" 1144 #define Tnot_in_history "not in history" 1145 #define Tnot_found_s "%s not found" 1146 #define Tnot_found "not found" 1147 #define Tnot_started "not started" 1148 #define TOLDPWD "OLDPWD" 1149 #define Topen "open" 1150 #define TPATH "PATH" 1151 #define Tpv "pv" 1152 #define TpVv "Vpv" 1153 #define TPWD "PWD" 1154 #define Tread "read" 1155 #define Tdsgreadonly "^*=readonly" 1156 #define Treadonly "readonly" 1157 #define Tredirection_dup "can't finish (dup) redirection" 1158 #define Tredirection "redirection" 1159 #define Treal_sp1 "real " 1160 #define Treal_sp2 " real " 1161 #define Treq_arg "requires an argument" 1162 #define Tselect "select" 1163 #define Tsgset "*=set" 1164 #define Tset "set" 1165 #define Tsh "sh" 1166 #define TSHELL "SHELL" 1167 #define Tshell "shell" 1168 #define Tshf_read "shf_read" 1169 #define Tshf_write "shf_write" 1170 #define Tgsource "=source" 1171 #define Tsource "source" 1172 #define Tj_suspend "j_suspend" 1173 #define Tsuspend "suspend" 1174 #define Tsynerr "syntax error" 1175 #define Ttime "time" 1176 #define Ttoo_many_args "too many arguments" 1177 #define Ttoo_many_files "too many open files in shell" 1178 #define Ttrue "true" 1179 #define Ttty_fd_dupof "dup of tty fd" 1180 #define Ttty_fd "tty fd" 1181 #define Tdgtypeset "^=typeset" 1182 #define Ttypeset "typeset" 1183 #define Tugo "ugo" 1184 #define Tunalias "unalias" 1185 #define Tunexpected "unexpected" 1186 #define Tunexpected_type "%s: unexpected %s type %d" 1187 #define Tunknown_option "unknown option" 1188 #define Tunwind "unwind" 1189 #define Tuser_sp1 "user " 1190 #define Tuser_sp2 " user " 1191 #define Twrite "write" 1192 #define Tf__S " %S" 1193 #define Tf__d " %d" 1194 #define Tf__ss " %s%s" 1195 #define Tf__sN " %s\n" 1196 #define Tf_sSs "%s/%s" 1197 #define Tf_T "%T" 1198 #define Tf_dN "%d\n" 1199 #define Tf_s_ "%s " 1200 #define Tf_s_T "%s %T" 1201 #define Tf_s_s_sN "%s %s %s\n" 1202 #define Tf_s_s "%s %s" 1203 #define Tf_s_sD_s "%s %s: %s" 1204 #define Tf_optfoo "%s%s-%c: %s" 1205 #define Tf_sD_ "%s: " 1206 #define Tf_szs "%s: %zd %s" 1207 #define Tf_parm "%s: parameter not set" 1208 #define Tf_coproc "-p: %s" 1209 #define Tf_cant_s "%s: can't %s" 1210 #define Tf_cant_ss_s "can't %s %s: %s" 1211 #define Tf_heredoc "here document '%s' unclosed" 1212 #if HAVE_MKNOD 1213 #define Tf_nonnum "non-numeric %s %s '%s'" 1214 #endif 1215 #define Tf_S_ "%S " 1216 #define Tf_S "%S" 1217 #define Tf_lu "%lu" 1218 #define Tf_toolarge "%s %s too large: %lu" 1219 #define Tf_ldfailed "%s %s(%d, %ld) failed: %s" 1220 #define Tf_ss "%s%s" 1221 #define Tf_sss "%s%s%s" 1222 #define Tf_sD_s_sD_s "%s: %s %s: %s" 1223 #define Tf_toomany "too many %ss" 1224 #define Tf_sd "%s %d" 1225 #define Tf_s "%s" 1226 #define Tft_end "%;" 1227 #define Tft_R "%R" 1228 #define Tf_d "%d" 1229 #define Tf_sD_s_qs "%s: %s '%s'" 1230 #define Tf_ro "read-only: %s" 1231 #define Tf_flags "%s: flags 0x%X" 1232 #define Tf_temp "can't %s temporary file %s: %s" 1233 #define Tf_ssfaileds "%s: %s failed: %s" 1234 #define Tf_sD_sD_s "%s: %s: %s" 1235 #define Tf__c_ "-%c " 1236 #define Tf_sD_s_s "%s: %s %s" 1237 #define Tf_sN "%s\n" 1238 #define Tf_sD_s "%s: %s" 1239 #define T_devtty "/dev/tty" 1240 #endif /* end of string pooling */ 1241 1242 typedef uint8_t Temp_type; 1243 /* expanded heredoc */ 1244 #define TT_HEREDOC_EXP 0 1245 /* temporary file used for history editing (fc -e) */ 1246 #define TT_HIST_EDIT 1 1247 /* temporary file used during in-situ command substitution */ 1248 #define TT_FUNSUB 2 1249 1250 /* temp/heredoc files. The file is removed when the struct is freed. */ 1251 struct temp { 1252 struct temp *next; 1253 struct shf *shf; 1254 /* pid of process parsed here-doc */ 1255 pid_t pid; 1256 Temp_type type; 1257 /* actually longer: name (variable length) */ 1258 char tffn[3]; 1259 }; 1260 1261 /* 1262 * stdio and our IO routines 1263 */ 1264 1265 #define shl_xtrace (&shf_iob[0]) /* for set -x */ 1266 #define shl_stdout (&shf_iob[1]) 1267 #define shl_out (&shf_iob[2]) 1268 #ifdef DF 1269 #define shl_dbg (&shf_iob[3]) /* for DF() */ 1270 #endif 1271 EXTERN bool shl_stdout_ok; 1272 1273 /* 1274 * trap handlers 1275 */ 1276 typedef struct trap { 1277 const char *name; /* short name */ 1278 const char *mess; /* descriptive name */ 1279 char *trap; /* trap command */ 1280 sig_t cursig; /* current handler (valid if TF_ORIG_* set) */ 1281 sig_t shtrap; /* shell signal handler */ 1282 int signal; /* signal number */ 1283 int flags; /* TF_* */ 1284 volatile sig_atomic_t set; /* trap pending */ 1285 } Trap; 1286 1287 /* values for Trap.flags */ 1288 #define TF_SHELL_USES BIT(0) /* shell uses signal, user can't change */ 1289 #define TF_USER_SET BIT(1) /* user has (tried to) set trap */ 1290 #define TF_ORIG_IGN BIT(2) /* original action was SIG_IGN */ 1291 #define TF_ORIG_DFL BIT(3) /* original action was SIG_DFL */ 1292 #define TF_EXEC_IGN BIT(4) /* restore SIG_IGN just before exec */ 1293 #define TF_EXEC_DFL BIT(5) /* restore SIG_DFL just before exec */ 1294 #define TF_DFL_INTR BIT(6) /* when received, default action is LINTR */ 1295 #define TF_TTY_INTR BIT(7) /* tty generated signal (see j_waitj) */ 1296 #define TF_CHANGED BIT(8) /* used by runtrap() to detect trap changes */ 1297 #define TF_FATAL BIT(9) /* causes termination if not trapped */ 1298 1299 /* values for setsig()/setexecsig() flags argument */ 1300 #define SS_RESTORE_MASK 0x3 /* how to restore a signal before an exec() */ 1301 #define SS_RESTORE_CURR 0 /* leave current handler in place */ 1302 #define SS_RESTORE_ORIG 1 /* restore original handler */ 1303 #define SS_RESTORE_DFL 2 /* restore to SIG_DFL */ 1304 #define SS_RESTORE_IGN 3 /* restore to SIG_IGN */ 1305 #define SS_FORCE BIT(3) /* set signal even if original signal ignored */ 1306 #define SS_USER BIT(4) /* user is doing the set (ie, trap command) */ 1307 #define SS_SHTRAP BIT(5) /* trap for internal use (ALRM, CHLD, WINCH) */ 1308 1309 #define ksh_SIGEXIT 0 /* for trap EXIT */ 1310 #define ksh_SIGERR ksh_NSIG /* for trap ERR */ 1311 1312 EXTERN volatile sig_atomic_t trap; /* traps pending? */ 1313 EXTERN volatile sig_atomic_t intrsig; /* pending trap interrupts command */ 1314 EXTERN volatile sig_atomic_t fatal_trap; /* received a fatal signal */ 1315 extern Trap sigtraps[ksh_NSIG + 1]; 1316 1317 /* got_winch = 1 when we need to re-adjust the window size */ 1318 #ifdef SIGWINCH 1319 EXTERN volatile sig_atomic_t got_winch E_INIT(1); 1320 #else 1321 #define got_winch true 1322 #endif 1323 1324 /* 1325 * TMOUT support 1326 */ 1327 /* values for ksh_tmout_state */ 1328 enum tmout_enum { 1329 TMOUT_EXECUTING = 0, /* executing commands */ 1330 TMOUT_READING, /* waiting for input */ 1331 TMOUT_LEAVING /* have timed out */ 1332 }; 1333 EXTERN unsigned int ksh_tmout; 1334 EXTERN enum tmout_enum ksh_tmout_state; 1335 1336 /* For "You have stopped jobs" message */ 1337 EXTERN bool really_exit; 1338 1339 /* 1340 * fast character classes 1341 */ 1342 1343 /* internal types, do not reference */ 1344 1345 /* initially emptyfilled at runtime from $IFS */ 1346 #define CiIFS BIT(0) 1347 #define CiCNTRL BIT(1) /* \x01\x08\x0E\x1F\x7F */ 1348 #define CiUPPER BIT(2) /* AZ */ 1349 #define CiLOWER BIT(3) /* az */ 1350 #define CiHEXLT BIT(4) /* AFaf */ 1351 #define CiOCTAL BIT(5) /* 07 */ 1352 #define CiQCL BIT(6) /* &();| */ 1353 #define CiALIAS BIT(7) /* !,.@ */ 1354 #define CiQCX BIT(8) /* *[\\ */ 1355 #define CiVAR1 BIT(9) /* !*@ */ 1356 #define CiQCM BIT(10) /* /^~ */ 1357 #define CiDIGIT BIT(11) /* 89 */ 1358 #define CiQC BIT(12) /* "' */ 1359 #define CiSPX BIT(13) /* \x0B\x0C */ 1360 #define CiCURLY BIT(14) /* {} */ 1361 #define CiANGLE BIT(15) /* <> */ 1362 #define CiNUL BIT(16) /* \x00 */ 1363 #define CiTAB BIT(17) /* \x09 */ 1364 #define CiNL BIT(18) /* \x0A */ 1365 #define CiCR BIT(19) /* \x0D */ 1366 #define CiSP BIT(20) /* \x20 */ 1367 #define CiHASH BIT(21) /* # */ 1368 #define CiSS BIT(22) /* $ */ 1369 #define CiPERCT BIT(23) /* % */ 1370 #define CiPLUS BIT(24) /* + */ 1371 #define CiMINUS BIT(25) /* - */ 1372 #define CiCOLON BIT(26) /* : */ 1373 #define CiEQUAL BIT(27) /* = */ 1374 #define CiQUEST BIT(28) /* ? */ 1375 #define CiBRACK BIT(29) /* ] */ 1376 #define CiUNDER BIT(30) /* _ */ 1377 #define CiGRAVE BIT(31) /* ` */ 1378 /* out of space, but one for *@ would make sense, possibly others */ 1379 1380 /* compile-time initialised, ASCII only */ 1381 extern const uint32_t tpl_ctypes[128]; 1382 /* run-time, contains C_IFS as well, full 2 octet range */ 1383 EXTERN uint32_t ksh_ctypes[256]; 1384 /* first octet of $IFS, for concatenating "$*" */ 1385 EXTERN char ifs0; 1386 1387 /* external types */ 1388 1389 /* !%,-.09:@AZ[]_az valid characters in alias names */ 1390 #define C_ALIAS (CiALIAS | CiBRACK | CiCOLON | CiDIGIT | CiLOWER | CiMINUS | CiOCTAL | CiPERCT | CiUNDER | CiUPPER) 1391 /* 09AZaz alphanumerical */ 1392 #define C_ALNUM (CiDIGIT | CiLOWER | CiOCTAL | CiUPPER) 1393 /* 09AZ_az alphanumerical plus underscore (word character) */ 1394 #define C_ALNUX (CiDIGIT | CiLOWER | CiOCTAL | CiUNDER | CiUPPER) 1395 /* AZaz alphabetical (upper plus lower) */ 1396 #define C_ALPHA (CiLOWER | CiUPPER) 1397 /* AZ_az alphabetical plus underscore (identifier lead) */ 1398 #define C_ALPHX (CiLOWER | CiUNDER | CiUPPER) 1399 /* \x01\x7F 7-bit ASCII except NUL */ 1400 #define C_ASCII (CiALIAS | CiANGLE | CiBRACK | CiCNTRL | CiCOLON | CiCR | CiCURLY | CiDIGIT | CiEQUAL | CiGRAVE | CiHASH | CiLOWER | CiMINUS | CiNL | CiOCTAL | CiPERCT | CiPLUS | CiQC | CiQCL | CiQCM | CiQCX | CiQUEST | CiSP | CiSPX | CiSS | CiTAB | CiUNDER | CiUPPER) 1401 /* \x09\x20 tab and space */ 1402 #define C_BLANK (CiSP | CiTAB) 1403 /* \x09\x20"' separator for completion */ 1404 #define C_CFS (CiQC | CiSP | CiTAB) 1405 /* \x00\x1F\x7F POSIX control characters */ 1406 #define C_CNTRL (CiCNTRL | CiCR | CiNL | CiNUL | CiSPX | CiTAB) 1407 /* 09 decimal digits */ 1408 #define C_DIGIT (CiDIGIT | CiOCTAL) 1409 /* &();`| editor x_locate_word() command */ 1410 #define C_EDCMD (CiGRAVE | CiQCL) 1411 /* \x09\x0A\x20"&'():;<=>`| editor non-word characters */ 1412 #define C_EDNWC (CiANGLE | CiCOLON | CiEQUAL | CiGRAVE | CiNL | CiQC | CiQCL | CiSP | CiTAB) 1413 /* "#$&'()*:;<=>?[\\`{|} editor quotes for tab completion */ 1414 #define C_EDQ (CiANGLE | CiCOLON | CiCURLY | CiEQUAL | CiGRAVE | CiHASH | CiQC | CiQCL | CiQCX | CiQUEST | CiSS) 1415 /* !~ POSIX graphical (alphanumerical plus punctuation) */ 1416 #define C_GRAPH (C_PUNCT | CiDIGIT | CiLOWER | CiOCTAL | CiUPPER) 1417 /* AFaf hex letter */ 1418 #define C_HEXLT CiHEXLT 1419 /* \x00 + $IFS IFS whitespace, IFS non-whitespace, NUL */ 1420 #define C_IFS (CiIFS | CiNUL) 1421 /* \x09\x0A\x20 IFS whitespace */ 1422 #define C_IFSWS (CiNL | CiSP | CiTAB) 1423 /* \x09\x0A\x20&();<>| (for the lexer) */ 1424 #define C_LEX1 (CiANGLE | CiNL | CiQCL | CiSP | CiTAB) 1425 /* az lowercase letters */ 1426 #define C_LOWER CiLOWER 1427 /* not alnux or dollar separator for motion */ 1428 #define C_MFS (CiALIAS | CiANGLE | CiBRACK | CiCNTRL | CiCOLON | CiCR | CiCURLY | CiEQUAL | CiGRAVE | CiHASH | CiMINUS | CiNL | CiNUL | CiPERCT | CiPLUS | CiQC | CiQCL | CiQCM | CiQCX | CiQUEST | CiSP | CiSPX | CiTAB) 1429 /* 07 octal digit */ 1430 #define C_OCTAL CiOCTAL 1431 /* !*+?@ pattern magical operator, except space */ 1432 #define C_PATMO (CiPLUS | CiQUEST | CiVAR1) 1433 /* \x20~ POSIX printable characters (graph plus space) */ 1434 #define C_PRINT (C_GRAPH | CiSP) 1435 /* !"#$%&'()*+,-./:;<=>?@[\\]^_`{|}~ POSIX punctuation */ 1436 #define C_PUNCT (CiALIAS | CiANGLE | CiBRACK | CiCOLON | CiCURLY | CiEQUAL | CiGRAVE | CiHASH | CiMINUS | CiPERCT | CiPLUS | CiQC | CiQCL | CiQCM | CiQCX | CiQUEST | CiSS | CiUNDER) 1437 /* \x09\x0A"#$&'()*;<=>?[\\]`| characters requiring quoting, minus space */ 1438 #define C_QUOTE (CiANGLE | CiBRACK | CiEQUAL | CiGRAVE | CiHASH | CiNL | CiQC | CiQCL | CiQCX | CiQUEST | CiSS | CiTAB) 1439 /* 09AFaf hexadecimal digit */ 1440 #define C_SEDEC (CiDIGIT | CiHEXLT | CiOCTAL) 1441 /* \x09\x0D\x20 POSIX space class */ 1442 #define C_SPACE (CiCR | CiNL | CiSP | CiSPX | CiTAB) 1443 /* +-=? substitution operations with word */ 1444 #define C_SUB1 (CiEQUAL | CiMINUS | CiPLUS | CiQUEST) 1445 /* #% substitution operations with pattern */ 1446 #define C_SUB2 (CiHASH | CiPERCT) 1447 /* AZ uppercase letters */ 1448 #define C_UPPER CiUPPER 1449 /* !#$*-?@ substitution parameters, other than positional */ 1450 #define C_VAR1 (CiHASH | CiMINUS | CiQUEST | CiSS | CiVAR1) 1451 1452 /* individual chars you might like */ 1453 #define C_ANGLE CiANGLE /* <> angle brackets */ 1454 #define C_COLON CiCOLON /* : colon */ 1455 #define C_CR CiCR /* \x0D ASCII carriage return */ 1456 #define C_DOLAR CiSS /* $ dollar sign */ 1457 #define C_EQUAL CiEQUAL /* = equals sign */ 1458 #define C_GRAVE CiGRAVE /* ` accent gravis */ 1459 #define C_HASH CiHASH /* # hash sign */ 1460 #define C_LF CiNL /* \x0A ASCII line feed */ 1461 #define C_MINUS CiMINUS /* - hyphen-minus */ 1462 #ifdef MKSH_WITH_TEXTMODE 1463 #define C_NL (CiNL | CiCR) /* CR or LF under OS/2 TEXTMODE */ 1464 #else 1465 #define C_NL CiNL /* LF only like under Unix */ 1466 #endif 1467 #define C_NUL CiNUL /* \x00 ASCII NUL */ 1468 #define C_PLUS CiPLUS /* + plus sign */ 1469 #define C_QC CiQC /* "' quote characters */ 1470 #define C_QUEST CiQUEST /* ? question mark */ 1471 #define C_SPC CiSP /* \x20 ASCII space */ 1472 #define C_TAB CiTAB /* \x09 ASCII horizontal tabulator */ 1473 #define C_UNDER CiUNDER /* _ underscore */ 1474 1475 /* identity transform of octet */ 1476 #if defined(DEBUG) && defined(__GNUC__) && !defined(__ICC) && \ 1477 !defined(__INTEL_COMPILER) && !defined(__SUNPRO_C) 1478 extern unsigned int eek_ord; 1479 #define ORD(c) ((size_t)(c) > 0xFF ? eek_ord : \ 1480 ((unsigned int)(unsigned char)(c))) 1481 #define ord(c) __builtin_choose_expr( \ 1482 __builtin_types_compatible_p(__typeof__(c), char) || \ 1483 __builtin_types_compatible_p(__typeof__(c), unsigned char), \ 1484 ((unsigned int)(unsigned char)(c)), ({ \ 1485 size_t ord_c = (c); \ 1486 \ 1487 if (ord_c > (size_t)0xFFU) \ 1488 internal_errorf("%s:%d:ord(%zX)", \ 1489 __FILE__, __LINE__, ord_c); \ 1490 ((unsigned int)(unsigned char)(ord_c)); \ 1491 })) 1492 #else 1493 #define ord(c) ((unsigned int)(unsigned char)(c)) 1494 #define ORD(c) ord(c) /* may evaluate arguments twice */ 1495 #endif 1496 #if defined(MKSH_EBCDIC) || defined(MKSH_FAUX_EBCDIC) 1497 EXTERN unsigned short ebcdic_map[256]; 1498 EXTERN unsigned char ebcdic_rtt_toascii[256]; 1499 EXTERN unsigned char ebcdic_rtt_fromascii[256]; 1500 extern void ebcdic_init(void); 1501 /* one-way to-ascii-or-high conversion, for POSIX locale ordering */ 1502 #define asciibetical(c) ((unsigned int)ebcdic_map[(unsigned char)(c)]) 1503 /* two-way round-trip conversion, for general use */ 1504 #define rtt2asc(c) ebcdic_rtt_toascii[(unsigned char)(c)] 1505 #define asc2rtt(c) ebcdic_rtt_fromascii[(unsigned char)(c)] 1506 /* case-independent char comparison */ 1507 #define ksh_eq(c,u,l) (ord(c) == ord(u) || ord(c) == ord(l)) 1508 #else 1509 #define asciibetical(c) ord(c) 1510 #define rtt2asc(c) ((unsigned char)(c)) 1511 #define asc2rtt(c) ((unsigned char)(c)) 1512 #define ksh_eq(c,u,l) ((ord(c) | 0x20) == ord(l)) 1513 #endif 1514 /* control character foo */ 1515 #ifdef MKSH_EBCDIC 1516 #define ksh_isctrl(c) (ord(c) < 0x40 || ord(c) == 0xFF) 1517 #else 1518 #define ksh_isctrl(c) ((ord(c) & 0x7F) < 0x20 || ord(c) == 0x7F) 1519 #endif 1520 /* new fast character classes */ 1521 #define ctype(c,t) tobool(ksh_ctypes[ord(c)] & (t)) 1522 #define cinttype(c,t) ((c) >= 0 && (c) <= 0xFF ? \ 1523 tobool(ksh_ctypes[(unsigned char)(c)] & (t)) : false) 1524 /* helper functions */ 1525 #define ksh_isdash(s) tobool(ord((s)[0]) == '-' && ord((s)[1]) == '\0') 1526 /* invariant distance even in EBCDIC */ 1527 #define ksh_tolower(c) (ctype(c, C_UPPER) ? (c) - 'A' + 'a' : (c)) 1528 #define ksh_toupper(c) (ctype(c, C_LOWER) ? (c) - 'a' + 'A' : (c)) 1529 /* strictly speaking rtt2asc() here, but this works even in EBCDIC */ 1530 #define ksh_numdig(c) (ord(c) - ORD('0')) 1531 #define ksh_numuc(c) (rtt2asc(c) - rtt2asc('A')) 1532 #define ksh_numlc(c) (rtt2asc(c) - rtt2asc('a')) 1533 #define ksh_toctrl(c) asc2rtt(ord(c) == ORD('?') ? 0x7F : rtt2asc(c) & 0x9F) 1534 #define ksh_unctrl(c) asc2rtt(rtt2asc(c) ^ 0x40U) 1535 1536 /* Argument parsing for built-in commands and getopts command */ 1537 1538 /* Values for Getopt.flags */ 1539 #define GF_ERROR BIT(0) /* call errorf() if there is an error */ 1540 #define GF_PLUSOPT BIT(1) /* allow +c as an option */ 1541 #define GF_NONAME BIT(2) /* don't print argv[0] in errors */ 1542 1543 /* Values for Getopt.info */ 1544 #define GI_MINUS BIT(0) /* an option started with -... */ 1545 #define GI_PLUS BIT(1) /* an option started with +... */ 1546 #define GI_MINUSMINUS BIT(2) /* arguments were ended with -- */ 1547 1548 /* in case some OS defines these */ 1549 #undef optarg 1550 #undef optind 1551 1552 typedef struct { 1553 const char *optarg; 1554 int optind; 1555 int uoptind; /* what user sees in $OPTIND */ 1556 int flags; /* see GF_* */ 1557 int info; /* see GI_* */ 1558 unsigned int p; /* 0 or index into argv[optind - 1] */ 1559 char buf[2]; /* for bad option OPTARG value */ 1560 } Getopt; 1561 1562 EXTERN Getopt builtin_opt; /* for shell builtin commands */ 1563 EXTERN Getopt user_opt; /* parsing state for getopts builtin command */ 1564 1565 /* This for co-processes */ 1566 1567 /* something that won't (realisticly) wrap */ 1568 typedef int Coproc_id; 1569 1570 struct coproc { 1571 void *job; /* 0 or job of co-process using input pipe */ 1572 int read; /* pipe from co-process's stdout */ 1573 int readw; /* other side of read (saved temporarily) */ 1574 int write; /* pipe to co-process's stdin */ 1575 int njobs; /* number of live jobs using output pipe */ 1576 Coproc_id id; /* id of current output pipe */ 1577 }; 1578 EXTERN struct coproc coproc; 1579 1580 #ifndef MKSH_NOPROSPECTOFWORK 1581 /* used in jobs.c and by coprocess stuff in exec.c and select() calls */ 1582 EXTERN sigset_t sm_default, sm_sigchld; 1583 #endif 1584 1585 /* name of called builtin function (used by error functions) */ 1586 EXTERN const char *builtin_argv0; 1587 /* is called builtin a POSIX special builtin? (error functions only) */ 1588 EXTERN bool builtin_spec; 1589 1590 /* current working directory */ 1591 EXTERN char *current_wd; 1592 1593 /* input line size */ 1594 #ifdef MKSH_SMALL 1595 #define LINE (4096 - ALLOC_OVERHEAD) 1596 #else 1597 #define LINE (16384 - ALLOC_OVERHEAD) 1598 #endif 1599 /* columns and lines of the tty */ 1600 EXTERN mksh_ari_t x_cols E_INIT(80); 1601 EXTERN mksh_ari_t x_lins E_INIT(24); 1602 1603 1604 /* Determine the location of the system (common) profile */ 1605 1606 #ifndef MKSH_DEFAULT_PROFILEDIR 1607 #define MKSH_DEFAULT_PROFILEDIR MKSH_UNIXROOT "/etc" 1608 #endif 1609 1610 #define MKSH_SYSTEM_PROFILE MKSH_DEFAULT_PROFILEDIR "/profile" 1611 #define MKSH_SUID_PROFILE MKSH_DEFAULT_PROFILEDIR "/suid_profile" 1612 1613 1614 /* Used by v_evaluate() and setstr() to control action when error occurs */ 1615 #define KSH_UNWIND_ERROR 0 /* unwind the stack (kshlongjmp) */ 1616 #define KSH_RETURN_ERROR 1 /* return 1/0 for success/failure */ 1617 1618 /* 1619 * Shell file I/O routines 1620 */ 1621 1622 #define SHF_BSIZE 512 1623 1624 #define shf_fileno(shf) ((shf)->fd) 1625 #define shf_setfileno(shf,nfd) ((shf)->fd = (nfd)) 1626 #define shf_getc_i(shf) ((shf)->rnleft > 0 ? \ 1627 (shf)->rnleft--, (int)ord(*(shf)->rp++) : \ 1628 shf_getchar(shf)) 1629 #define shf_putc_i(c, shf) ((shf)->wnleft == 0 ? \ 1630 shf_putchar((uint8_t)(c), (shf)) : \ 1631 ((shf)->wnleft--, *(shf)->wp++ = (c))) 1632 #define shf_eof(shf) ((shf)->flags & SHF_EOF) 1633 #define shf_error(shf) ((shf)->flags & SHF_ERROR) 1634 #define shf_errno(shf) ((shf)->errnosv) 1635 #define shf_clearerr(shf) ((shf)->flags &= ~(SHF_EOF | SHF_ERROR)) 1636 1637 /* Flags passed to shf_*open() */ 1638 #define SHF_RD 0x0001 1639 #define SHF_WR 0x0002 1640 #define SHF_RDWR (SHF_RD|SHF_WR) 1641 #define SHF_ACCMODE 0x0003 /* mask */ 1642 #define SHF_GETFL 0x0004 /* use fcntl() to figure RD/WR flags */ 1643 #define SHF_UNBUF 0x0008 /* unbuffered I/O */ 1644 #define SHF_CLEXEC 0x0010 /* set close on exec flag */ 1645 #define SHF_MAPHI 0x0020 /* make fd > FDBASE (and close orig) 1646 * (shf_open() only) */ 1647 #define SHF_DYNAMIC 0x0040 /* string: increase buffer as needed */ 1648 #define SHF_INTERRUPT 0x0080 /* EINTR in read/write causes error */ 1649 /* Flags used internally */ 1650 #define SHF_STRING 0x0100 /* a string, not a file */ 1651 #define SHF_ALLOCS 0x0200 /* shf and shf->buf were alloc()ed */ 1652 #define SHF_ALLOCB 0x0400 /* shf->buf was alloc()ed */ 1653 #define SHF_ERROR 0x0800 /* read()/write() error */ 1654 #define SHF_EOF 0x1000 /* read eof (sticky) */ 1655 #define SHF_READING 0x2000 /* currently reading: rnleft,rp valid */ 1656 #define SHF_WRITING 0x4000 /* currently writing: wnleft,wp valid */ 1657 1658 1659 struct shf { 1660 Area *areap; /* area shf/buf were allocated in */ 1661 unsigned char *rp; /* read: current position in buffer */ 1662 unsigned char *wp; /* write: current position in buffer */ 1663 unsigned char *buf; /* buffer */ 1664 ssize_t bsize; /* actual size of buf */ 1665 ssize_t rbsize; /* size of buffer (1 if SHF_UNBUF) */ 1666 ssize_t rnleft; /* read: how much data left in buffer */ 1667 ssize_t wbsize; /* size of buffer (0 if SHF_UNBUF) */ 1668 ssize_t wnleft; /* write: how much space left in buffer */ 1669 int flags; /* see SHF_* */ 1670 int fd; /* file descriptor */ 1671 int errnosv; /* saved value of errno after error */ 1672 }; 1673 1674 extern struct shf shf_iob[]; 1675 1676 struct table { 1677 Area *areap; /* area to allocate entries */ 1678 struct tbl **tbls; /* hashed table items */ 1679 size_t nfree; /* free table entries */ 1680 uint8_t tshift; /* table size (2^tshift) */ 1681 }; 1682 1683 /* table item */ 1684 struct tbl { 1685 /* Area to allocate from */ 1686 Area *areap; 1687 /* value */ 1688 union { 1689 char *s; /* string */ 1690 mksh_ari_t i; /* integer */ 1691 mksh_uari_t u; /* unsigned integer */ 1692 int (*f)(const char **); /* built-in command */ 1693 struct op *t; /* "function" tree */ 1694 } val; 1695 union { 1696 struct tbl *array; /* array values */ 1697 const char *fpath; /* temporary path to undef function */ 1698 } u; 1699 union { 1700 int field; /* field with for -L/-R/-Z */ 1701 int errnov; /* CEXEC/CTALIAS */ 1702 } u2; 1703 union { 1704 uint32_t hval; /* hash(name) */ 1705 uint32_t index; /* index for an array */ 1706 } ua; 1707 /* 1708 * command type (see below), base (if INTEGER), 1709 * offset from val.s of value (if EXPORT) 1710 */ 1711 int type; 1712 /* flags (see below) */ 1713 uint32_t flag; 1714 1715 /* actually longer: name (variable length) */ 1716 char name[4]; 1717 }; 1718 1719 EXTERN struct tbl *vtemp; 1720 /* set by isglobal(), global() and local() */ 1721 EXTERN bool last_lookup_was_array; 1722 1723 /* common flag bits */ 1724 #define ALLOC BIT(0) /* val.s has been allocated */ 1725 #define DEFINED BIT(1) /* is defined in block */ 1726 #define ISSET BIT(2) /* has value, vp->val.[si] */ 1727 #define EXPORT BIT(3) /* exported variable/function */ 1728 #define TRACE BIT(4) /* var: user flagged, func: execution tracing */ 1729 /* (start non-common flags at 8) */ 1730 /* flag bits used for variables */ 1731 #define SPECIAL BIT(8) /* PATH, IFS, SECONDS, etc */ 1732 #define INTEGER BIT(9) /* val.i contains integer value */ 1733 #define RDONLY BIT(10) /* read-only variable */ 1734 #define LOCAL BIT(11) /* for local typeset() */ 1735 #define ARRAY BIT(13) /* array */ 1736 #define LJUST BIT(14) /* left justify */ 1737 #define RJUST BIT(15) /* right justify */ 1738 #define ZEROFIL BIT(16) /* 0 filled if RJUSTIFY, strip 0s if LJUSTIFY */ 1739 #define LCASEV BIT(17) /* convert to lower case */ 1740 #define UCASEV_AL BIT(18) /* convert to upper case / autoload function */ 1741 #define INT_U BIT(19) /* unsigned integer */ 1742 #define INT_L BIT(20) /* long integer (no-op but used as magic) */ 1743 #define IMPORT BIT(21) /* flag to typeset(): no arrays, must have = */ 1744 #define LOCAL_COPY BIT(22) /* with LOCAL - copy attrs from existing var */ 1745 #define EXPRINEVAL BIT(23) /* contents currently being evaluated */ 1746 #define EXPRLVALUE BIT(24) /* useable as lvalue (temp flag) */ 1747 #define AINDEX BIT(25) /* array index >0 = ua.index filled in */ 1748 #define ASSOC BIT(26) /* ARRAY ? associative : reference */ 1749 /* flag bits used for taliases/builtins/aliases/keywords/functions */ 1750 #define KEEPASN BIT(8) /* keep command assignments (eg, var=x cmd) */ 1751 #define FINUSE BIT(9) /* function being executed */ 1752 #define FDELETE BIT(10) /* function deleted while it was executing */ 1753 #define FKSH BIT(11) /* function defined with function x (vs x()) */ 1754 #define SPEC_BI BIT(12) /* a POSIX special builtin */ 1755 #define LOWER_BI BIT(13) /* (with LOW_BI) override even w/o flags */ 1756 #define LOW_BI BIT(14) /* external utility overrides built-in one */ 1757 #define DECL_UTIL BIT(15) /* is declaration utility */ 1758 #define DECL_FWDR BIT(16) /* is declaration utility forwarder */ 1759 1760 /* 1761 * Attributes that can be set by the user (used to decide if an unset 1762 * param should be repoted by set/typeset). Does not include ARRAY or 1763 * LOCAL. 1764 */ 1765 #define USERATTRIB (EXPORT|INTEGER|RDONLY|LJUST|RJUST|ZEROFIL|\ 1766 LCASEV|UCASEV_AL|INT_U|INT_L) 1767 1768 #define arrayindex(vp) ((unsigned long)((vp)->flag & AINDEX ? \ 1769 (vp)->ua.index : 0)) 1770 1771 enum namerefflag { 1772 SRF_NOP, 1773 SRF_ENABLE, 1774 SRF_DISABLE 1775 }; 1776 1777 /* command types */ 1778 #define CNONE 0 /* undefined */ 1779 #define CSHELL 1 /* built-in */ 1780 #define CFUNC 2 /* function */ 1781 #define CEXEC 4 /* executable command */ 1782 #define CALIAS 5 /* alias */ 1783 #define CKEYWD 6 /* keyword */ 1784 #define CTALIAS 7 /* tracked alias */ 1785 1786 /* Flags for findcom()/comexec() */ 1787 #define FC_SPECBI BIT(0) /* special builtin */ 1788 #define FC_FUNC BIT(1) /* function */ 1789 #define FC_NORMBI BIT(2) /* not special builtin */ 1790 #define FC_BI (FC_SPECBI | FC_NORMBI) 1791 #define FC_PATH BIT(3) /* do path search */ 1792 #define FC_DEFPATH BIT(4) /* use default path in path search */ 1793 #define FC_WHENCE BIT(5) /* for use by command and whence */ 1794 1795 #define AF_ARGV_ALLOC 0x1 /* argv[] array allocated */ 1796 #define AF_ARGS_ALLOCED 0x2 /* argument strings allocated */ 1797 #define AI_ARGV(a, i) ((i) == 0 ? (a).argv[0] : (a).argv[(i) - (a).skip]) 1798 #define AI_ARGC(a) ((a).ai_argc - (a).skip) 1799 1800 /* Argument info. Used for $#, $* for shell, functions, includes, etc. */ 1801 struct arg_info { 1802 const char **argv; 1803 int flags; /* AF_* */ 1804 int ai_argc; 1805 int skip; /* first arg is argv[0], second is argv[1 + skip] */ 1806 }; 1807 1808 /* 1809 * activation record for function blocks 1810 */ 1811 struct block { 1812 Area area; /* area to allocate things */ 1813 const char **argv; 1814 char *error; /* error handler */ 1815 char *exit; /* exit handler */ 1816 struct block *next; /* enclosing block */ 1817 struct table vars; /* local variables */ 1818 struct table funs; /* local functions */ 1819 Getopt getopts_state; 1820 int argc; 1821 int flags; /* see BF_* */ 1822 }; 1823 1824 /* Values for struct block.flags */ 1825 #define BF_DOGETOPTS BIT(0) /* save/restore getopts state */ 1826 #define BF_STOPENV BIT(1) /* do not export further */ 1827 1828 /* 1829 * Used by ktwalk() and ktnext() routines. 1830 */ 1831 struct tstate { 1832 struct tbl **next; 1833 ssize_t left; 1834 }; 1835 1836 EXTERN struct table taliases; /* tracked aliases */ 1837 EXTERN struct table builtins; /* built-in commands */ 1838 EXTERN struct table aliases; /* aliases */ 1839 EXTERN struct table keywords; /* keywords */ 1840 #ifndef MKSH_NOPWNAM 1841 EXTERN struct table homedirs; /* homedir() cache */ 1842 #endif 1843 1844 struct builtin { 1845 const char *name; 1846 int (*func)(const char **); 1847 }; 1848 1849 extern const struct builtin mkshbuiltins[]; 1850 1851 /* values for set_prompt() */ 1852 #define PS1 0 /* command */ 1853 #define PS2 1 /* command continuation */ 1854 1855 EXTERN char *path; /* copy of either PATH or def_path */ 1856 EXTERN const char *def_path; /* path to use if PATH not set */ 1857 EXTERN char *tmpdir; /* TMPDIR value */ 1858 EXTERN const char *prompt; 1859 EXTERN uint8_t cur_prompt; /* PS1 or PS2 */ 1860 EXTERN int current_lineno; /* LINENO value */ 1861 1862 /* 1863 * Description of a command or an operation on commands. 1864 */ 1865 struct op { 1866 const char **args; /* arguments to a command */ 1867 char **vars; /* variable assignments */ 1868 struct ioword **ioact; /* IO actions (eg, < > >>) */ 1869 struct op *left, *right; /* descendents */ 1870 char *str; /* word for case; identifier for for, 1871 * select, and functions; 1872 * path to execute for TEXEC; 1873 * time hook for TCOM. 1874 */ 1875 int lineno; /* TCOM/TFUNC: LINENO for this */ 1876 short type; /* operation type, see below */ 1877 /* WARNING: newtp(), tcopy() use evalflags = 0 to clear union */ 1878 union { 1879 /* TCOM: arg expansion eval() flags */ 1880 short evalflags; 1881 /* TFUNC: function x (vs x()) */ 1882 short ksh_func; 1883 /* TPAT: termination character */ 1884 char charflag; 1885 } u; 1886 }; 1887 1888 /* Tree.type values */ 1889 #define TEOF 0 1890 #define TCOM 1 /* command */ 1891 #define TPAREN 2 /* (c-list) */ 1892 #define TPIPE 3 /* a | b */ 1893 #define TLIST 4 /* a ; b */ 1894 #define TOR 5 /* || */ 1895 #define TAND 6 /* && */ 1896 #define TBANG 7 /* ! */ 1897 #define TDBRACKET 8 /* [[ .. ]] */ 1898 #define TFOR 9 1899 #define TSELECT 10 1900 #define TCASE 11 1901 #define TIF 12 1902 #define TWHILE 13 1903 #define TUNTIL 14 1904 #define TELIF 15 1905 #define TPAT 16 /* pattern in case */ 1906 #define TBRACE 17 /* {c-list} */ 1907 #define TASYNC 18 /* c & */ 1908 #define TFUNCT 19 /* function name { command; } */ 1909 #define TTIME 20 /* time pipeline */ 1910 #define TEXEC 21 /* fork/exec eval'd TCOM */ 1911 #define TCOPROC 22 /* coprocess |& */ 1912 1913 /* 1914 * prefix codes for words in command tree 1915 */ 1916 #define EOS 0 /* end of string */ 1917 #define CHAR 1 /* unquoted character */ 1918 #define QCHAR 2 /* quoted character */ 1919 #define COMSUB 3 /* $() substitution (0 terminated) */ 1920 #define EXPRSUB 4 /* $(()) substitution (0 terminated) */ 1921 #define OQUOTE 5 /* opening " or ' */ 1922 #define CQUOTE 6 /* closing " or ' */ 1923 #define OSUBST 7 /* opening ${ subst (followed by { or X) */ 1924 #define CSUBST 8 /* closing } of above (followed by } or X) */ 1925 #define OPAT 9 /* open pattern: *(, @(, etc. */ 1926 #define SPAT 10 /* separate pattern: | */ 1927 #define CPAT 11 /* close pattern: ) */ 1928 #define ADELIM 12 /* arbitrary delimiter: ${foo:2:3} ${foo/bar/baz} */ 1929 #define FUNSUB 14 /* ${ foo;} substitution (NUL terminated) */ 1930 #define VALSUB 15 /* ${|foo;} substitution (NUL terminated) */ 1931 #define COMASUB 16 /* `` substitution (COMSUB but expand aliases) */ 1932 #define FUNASUB 17 /* function substitution but expand aliases */ 1933 1934 /* 1935 * IO redirection 1936 */ 1937 struct ioword { 1938 char *ioname; /* filename (unused if heredoc) */ 1939 char *delim; /* delimiter for <<, <<- */ 1940 char *heredoc; /* content of heredoc */ 1941 unsigned short ioflag; /* action (below) */ 1942 short unit; /* unit (fd) affected */ 1943 }; 1944 1945 /* ioword.flag - type of redirection */ 1946 #define IOTYPE 0xF /* type: bits 0:3 */ 1947 #define IOREAD 0x1 /* < */ 1948 #define IOWRITE 0x2 /* > */ 1949 #define IORDWR 0x3 /* <>: todo */ 1950 #define IOHERE 0x4 /* << (here file) */ 1951 #define IOCAT 0x5 /* >> */ 1952 #define IODUP 0x6 /* <&/>& */ 1953 #define IOEVAL BIT(4) /* expand in << */ 1954 #define IOSKIP BIT(5) /* <<-, skip ^\t* */ 1955 #define IOCLOB BIT(6) /* >|, override -o noclobber */ 1956 #define IORDUP BIT(7) /* x<&y (as opposed to x>&y) */ 1957 #define IODUPSELF BIT(8) /* x>&x (as opposed to x>&y) */ 1958 #define IONAMEXP BIT(9) /* name has been expanded */ 1959 #define IOBASH BIT(10) /* &> etc. */ 1960 #define IOHERESTR BIT(11) /* <<< (here string) */ 1961 #define IONDELIM BIT(12) /* null delimiter (<<) */ 1962 1963 /* execute/exchild flags */ 1964 #define XEXEC BIT(0) /* execute without forking */ 1965 #define XFORK BIT(1) /* fork before executing */ 1966 #define XBGND BIT(2) /* command & */ 1967 #define XPIPEI BIT(3) /* input is pipe */ 1968 #define XPIPEO BIT(4) /* output is pipe */ 1969 #define XXCOM BIT(5) /* `...` command */ 1970 #define XPCLOSE BIT(6) /* exchild: close close_fd in parent */ 1971 #define XCCLOSE BIT(7) /* exchild: close close_fd in child */ 1972 #define XERROK BIT(8) /* non-zero exit ok (for set -e) */ 1973 #define XCOPROC BIT(9) /* starting a co-process */ 1974 #define XTIME BIT(10) /* timing TCOM command */ 1975 #define XPIPEST BIT(11) /* want PIPESTATUS */ 1976 1977 /* 1978 * flags to control expansion of words (assumed by t->evalflags to fit 1979 * in a short) 1980 */ 1981 #define DOBLANK BIT(0) /* perform blank interpretation */ 1982 #define DOGLOB BIT(1) /* expand [?* */ 1983 #define DOPAT BIT(2) /* quote *?[ */ 1984 #define DOTILDE BIT(3) /* normal ~ expansion (first char) */ 1985 #define DONTRUNCOMMAND BIT(4) /* do not run $(command) things */ 1986 #define DOASNTILDE BIT(5) /* assignment ~ expansion (after =, :) */ 1987 #define DOBRACE BIT(6) /* used by expand(): do brace expansion */ 1988 #define DOMAGIC BIT(7) /* used by expand(): string contains MAGIC */ 1989 #define DOTEMP BIT(8) /* dito: in word part of ${..[%#=?]..} */ 1990 #define DOVACHECK BIT(9) /* var assign check (for typeset, set, etc) */ 1991 #define DOMARKDIRS BIT(10) /* force markdirs behaviour */ 1992 #define DOTCOMEXEC BIT(11) /* not an eval flag, used by sh -c hack */ 1993 #define DOSCALAR BIT(12) /* change field handling to non-list context */ 1994 #define DOHEREDOC BIT(13) /* change scalar handling to heredoc body */ 1995 #define DOHERESTR BIT(14) /* append a newline char */ 1996 1997 #define X_EXTRA 20 /* this many extra bytes in X string */ 1998 1999 typedef struct XString { 2000 /* beginning of string */ 2001 char *beg; 2002 /* length of allocated area, minus safety margin */ 2003 size_t len; 2004 /* end of string */ 2005 char *end; 2006 /* memory area used */ 2007 Area *areap; 2008 } XString; 2009 2010 /* initialise expandable string */ 2011 #define XinitN(xs, length, area) do { \ 2012 (xs).len = (length); \ 2013 (xs).areap = (area); \ 2014 (xs).beg = alloc((xs).len + X_EXTRA, (xs).areap); \ 2015 (xs).end = (xs).beg + (xs).len; \ 2016 } while (/* CONSTCOND */ 0) 2017 #define Xinit(xs, xp, length, area) do { \ 2018 XinitN((xs), (length), (area)); \ 2019 (xp) = (xs).beg; \ 2020 } while (/* CONSTCOND */ 0) 2021 2022 /* stuff char into string */ 2023 #define Xput(xs, xp, c) (*xp++ = (c)) 2024 2025 /* check if there are at least n bytes left */ 2026 #define XcheckN(xs, xp, n) do { \ 2027 ssize_t more = ((xp) + (n)) - (xs).end; \ 2028 if (more > 0) \ 2029 (xp) = Xcheck_grow(&(xs), (xp), (size_t)more); \ 2030 } while (/* CONSTCOND */ 0) 2031 2032 /* check for overflow, expand string */ 2033 #define Xcheck(xs, xp) XcheckN((xs), (xp), 1) 2034 2035 /* free string */ 2036 #define Xfree(xs, xp) afree((xs).beg, (xs).areap) 2037 2038 /* close, return string */ 2039 #define Xclose(xs, xp) aresize((xs).beg, (xp) - (xs).beg, (xs).areap) 2040 2041 /* beginning of string */ 2042 #define Xstring(xs, xp) ((xs).beg) 2043 2044 #define Xnleft(xs, xp) ((xs).end - (xp)) /* may be less than 0 */ 2045 #define Xlength(xs, xp) ((xp) - (xs).beg) 2046 #define Xsize(xs, xp) ((xs).end - (xs).beg) 2047 #define Xsavepos(xs, xp) ((xp) - (xs).beg) 2048 #define Xrestpos(xs, xp, n) ((xs).beg + (n)) 2049 2050 char *Xcheck_grow(XString *, const char *, size_t); 2051 2052 /* 2053 * expandable vector of generic pointers 2054 */ 2055 2056 typedef struct { 2057 /* beginning of allocated area */ 2058 void **beg; 2059 /* currently used number of entries */ 2060 size_t len; 2061 /* allocated number of entries */ 2062 size_t siz; 2063 } XPtrV; 2064 2065 #define XPinit(x, n) do { \ 2066 (x).siz = (n); \ 2067 (x).len = 0; \ 2068 (x).beg = alloc2((x).siz, sizeof(void *), ATEMP); \ 2069 } while (/* CONSTCOND */ 0) \ 2070 2071 #define XPput(x, p) do { \ 2072 if ((x).len == (x).siz) { \ 2073 (x).beg = aresize2((x).beg, (x).siz, \ 2074 2 * sizeof(void *), ATEMP); \ 2075 (x).siz <<= 1; \ 2076 } \ 2077 (x).beg[(x).len++] = (p); \ 2078 } while (/* CONSTCOND */ 0) 2079 2080 #define XPptrv(x) ((x).beg) 2081 #define XPsize(x) ((x).len) 2082 #define XPclose(x) aresize2((x).beg, XPsize(x), sizeof(void *), ATEMP) 2083 #define XPfree(x) afree((x).beg, ATEMP) 2084 2085 /* for print_columns */ 2086 2087 struct columnise_opts { 2088 struct shf *shf; 2089 char linesep; 2090 bool do_last; 2091 bool prefcol; 2092 }; 2093 2094 /* 2095 * Lexer internals 2096 */ 2097 2098 typedef struct source Source; 2099 struct source { 2100 /* input buffer */ 2101 XString xs; 2102 /* memory area, also checked in reclaim() */ 2103 Area *areap; 2104 /* stacked source */ 2105 Source *next; 2106 /* input pointer */ 2107 const char *str; 2108 /* start of current buffer */ 2109 const char *start; 2110 /* input file name */ 2111 const char *file; 2112 /* extra data */ 2113 union { 2114 /* string[] */ 2115 const char **strv; 2116 /* shell file */ 2117 struct shf *shf; 2118 /* alias (SF_HASALIAS) */ 2119 struct tbl *tblp; 2120 /* (also for SREREAD) */ 2121 char *freeme; 2122 } u; 2123 /* flags */ 2124 int flags; 2125 /* input type */ 2126 int type; 2127 /* line number */ 2128 int line; 2129 /* line the error occurred on (0 if not set) */ 2130 int errline; 2131 /* buffer for ungetsc() (SREREAD) and alias (SALIAS) */ 2132 char ugbuf[2]; 2133 }; 2134 2135 /* Source.type values */ 2136 #define SEOF 0 /* input EOF */ 2137 #define SFILE 1 /* file input */ 2138 #define SSTDIN 2 /* read stdin */ 2139 #define SSTRING 3 /* string */ 2140 #define SWSTR 4 /* string without \n */ 2141 #define SWORDS 5 /* string[] */ 2142 #define SWORDSEP 6 /* string[] separator */ 2143 #define SALIAS 7 /* alias expansion */ 2144 #define SREREAD 8 /* read ahead to be re-scanned */ 2145 #define SSTRINGCMDLINE 9 /* string from "mksh -c ..." */ 2146 2147 /* Source.flags values */ 2148 #define SF_ECHO BIT(0) /* echo input to shlout */ 2149 #define SF_ALIAS BIT(1) /* faking space at end of alias */ 2150 #define SF_ALIASEND BIT(2) /* faking space at end of alias */ 2151 #define SF_TTY BIT(3) /* type == SSTDIN & it is a tty */ 2152 #define SF_HASALIAS BIT(4) /* u.tblp valid (SALIAS, SEOF) */ 2153 #define SF_MAYEXEC BIT(5) /* special sh -c optimisation hack */ 2154 2155 typedef union { 2156 int i; 2157 char *cp; 2158 char **wp; 2159 struct op *o; 2160 struct ioword *iop; 2161 } YYSTYPE; 2162 2163 /* If something is added here, add it to tokentab[] in syn.c as well */ 2164 #define LWORD 256 2165 #define LOGAND 257 /* && */ 2166 #define LOGOR 258 /* || */ 2167 #define BREAK 259 /* ;; */ 2168 #define IF 260 2169 #define THEN 261 2170 #define ELSE 262 2171 #define ELIF 263 2172 #define FI 264 2173 #define CASE 265 2174 #define ESAC 266 2175 #define FOR 267 2176 #define SELECT 268 2177 #define WHILE 269 2178 #define UNTIL 270 2179 #define DO 271 2180 #define DONE 272 2181 #define IN 273 2182 #define FUNCTION 274 2183 #define TIME 275 2184 #define REDIR 276 2185 #define MDPAREN 277 /* (( )) */ 2186 #define BANG 278 /* ! */ 2187 #define DBRACKET 279 /* [[ .. ]] */ 2188 #define COPROC 280 /* |& */ 2189 #define BRKEV 281 /* ;| */ 2190 #define BRKFT 282 /* ;& */ 2191 #define YYERRCODE 300 2192 2193 /* flags to yylex */ 2194 #define CONTIN BIT(0) /* skip new lines to complete command */ 2195 #define ONEWORD BIT(1) /* single word for substitute() */ 2196 #define ALIAS BIT(2) /* recognise alias */ 2197 #define KEYWORD BIT(3) /* recognise keywords */ 2198 #define LETEXPR BIT(4) /* get expression inside (( )) */ 2199 #define CMDASN BIT(5) /* parse x[1 & 2] as one word, for typeset */ 2200 #define HEREDOC BIT(6) /* parsing a here document body */ 2201 #define ESACONLY BIT(7) /* only accept esac keyword */ 2202 #define CMDWORD BIT(8) /* parsing simple command (alias related) */ 2203 #define HEREDELIM BIT(9) /* parsing <<,<<- delimiter */ 2204 #define LQCHAR BIT(10) /* source string contains QCHAR */ 2205 2206 #define HERES 10 /* max number of << in line */ 2207 2208 #ifdef MKSH_EBCDIC 2209 #define CTRL_AT (0x00U) 2210 #define CTRL_A (0x01U) 2211 #define CTRL_B (0x02U) 2212 #define CTRL_C (0x03U) 2213 #define CTRL_D (0x37U) 2214 #define CTRL_E (0x2DU) 2215 #define CTRL_F (0x2EU) 2216 #define CTRL_G (0x2FU) 2217 #define CTRL_H (0x16U) 2218 #define CTRL_I (0x05U) 2219 #define CTRL_J (0x15U) 2220 #define CTRL_K (0x0BU) 2221 #define CTRL_L (0x0CU) 2222 #define CTRL_M (0x0DU) 2223 #define CTRL_N (0x0EU) 2224 #define CTRL_O (0x0FU) 2225 #define CTRL_P (0x10U) 2226 #define CTRL_Q (0x11U) 2227 #define CTRL_R (0x12U) 2228 #define CTRL_S (0x13U) 2229 #define CTRL_T (0x3CU) 2230 #define CTRL_U (0x3DU) 2231 #define CTRL_V (0x32U) 2232 #define CTRL_W (0x26U) 2233 #define CTRL_X (0x18U) 2234 #define CTRL_Y (0x19U) 2235 #define CTRL_Z (0x3FU) 2236 #define CTRL_BO (0x27U) 2237 #define CTRL_BK (0x1CU) 2238 #define CTRL_BC (0x1DU) 2239 #define CTRL_CA (0x1EU) 2240 #define CTRL_US (0x1FU) 2241 #define CTRL_QM (0x07U) 2242 #else 2243 #define CTRL_AT (0x00U) 2244 #define CTRL_A (0x01U) 2245 #define CTRL_B (0x02U) 2246 #define CTRL_C (0x03U) 2247 #define CTRL_D (0x04U) 2248 #define CTRL_E (0x05U) 2249 #define CTRL_F (0x06U) 2250 #define CTRL_G (0x07U) 2251 #define CTRL_H (0x08U) 2252 #define CTRL_I (0x09U) 2253 #define CTRL_J (0x0AU) 2254 #define CTRL_K (0x0BU) 2255 #define CTRL_L (0x0CU) 2256 #define CTRL_M (0x0DU) 2257 #define CTRL_N (0x0EU) 2258 #define CTRL_O (0x0FU) 2259 #define CTRL_P (0x10U) 2260 #define CTRL_Q (0x11U) 2261 #define CTRL_R (0x12U) 2262 #define CTRL_S (0x13U) 2263 #define CTRL_T (0x14U) 2264 #define CTRL_U (0x15U) 2265 #define CTRL_V (0x16U) 2266 #define CTRL_W (0x17U) 2267 #define CTRL_X (0x18U) 2268 #define CTRL_Y (0x19U) 2269 #define CTRL_Z (0x1AU) 2270 #define CTRL_BO (0x1BU) 2271 #define CTRL_BK (0x1CU) 2272 #define CTRL_BC (0x1DU) 2273 #define CTRL_CA (0x1EU) 2274 #define CTRL_US (0x1FU) 2275 #define CTRL_QM (0x7FU) 2276 #endif 2277 2278 #define IDENT 64 2279 2280 EXTERN Source *source; /* yyparse/yylex source */ 2281 EXTERN YYSTYPE yylval; /* result from yylex */ 2282 EXTERN struct ioword *heres[HERES], **herep; 2283 EXTERN char ident[IDENT + 1]; 2284 2285 EXTERN char **history; /* saved commands */ 2286 EXTERN char **histptr; /* last history item */ 2287 EXTERN mksh_ari_t histsize; /* history size */ 2288 2289 /* flags to histsave */ 2290 #define HIST_FLUSH 0 2291 #define HIST_QUEUE 1 2292 #define HIST_APPEND 2 2293 #define HIST_STORE 3 2294 #define HIST_NOTE 4 2295 2296 /* user and system time of last j_waitjed job */ 2297 EXTERN struct timeval j_usrtime, j_systime; 2298 2299 #define notok2mul(max, val, c) (((val) != 0) && ((c) != 0) && \ 2300 (((max) / (c)) < (val))) 2301 #define notok2add(max, val, c) ((val) > ((max) - (c))) 2302 #define notoktomul(val, cnst) notok2mul(SIZE_MAX, (val), (cnst)) 2303 #define notoktoadd(val, cnst) notok2add(SIZE_MAX, (val), (cnst)) 2304 #define checkoktoadd(val, cnst) do { \ 2305 if (notoktoadd((val), (cnst))) \ 2306 internal_errorf(Tintovfl, (size_t)(val), \ 2307 '+', (size_t)(cnst)); \ 2308 } while (/* CONSTCOND */ 0) 2309 2310 2311 /* lalloc.c */ 2312 void ainit(Area *); 2313 void afreeall(Area *); 2314 /* these cannot fail and can take NULL (not for ap) */ 2315 #define alloc(n, ap) aresize(NULL, (n), (ap)) 2316 #define alloc2(m, n, ap) aresize2(NULL, (m), (n), (ap)) 2317 void *aresize(void *, size_t, Area *); 2318 void *aresize2(void *, size_t, size_t, Area *); 2319 void afree(void *, Area *); /* can take NULL */ 2320 /* edit.c */ 2321 #ifndef MKSH_NO_CMDLINE_EDITING 2322 #ifndef MKSH_SMALL 2323 int x_bind(const char *, const char *, bool, bool); 2324 #else 2325 int x_bind(const char *, const char *, bool); 2326 #endif 2327 void x_init(void); 2328 #ifdef DEBUG_LEAKS 2329 void x_done(void); 2330 #endif 2331 int x_read(char *); 2332 #endif 2333 void x_mkraw(int, mksh_ttyst *, bool); 2334 void x_initterm(const char *); 2335 /* eval.c */ 2336 char *substitute(const char *, int); 2337 char **eval(const char **, int); 2338 char *evalstr(const char *cp, int); 2339 char *evalonestr(const char *cp, int); 2340 char *debunk(char *, const char *, size_t); 2341 void expand(const char *, XPtrV *, int); 2342 int glob_str(char *, XPtrV *, bool); 2343 char *do_tilde(char *); 2344 /* exec.c */ 2345 int execute(struct op * volatile, volatile int, volatile int * volatile); 2346 int c_builtin(const char **); 2347 struct tbl *get_builtin(const char *); 2348 struct tbl *findfunc(const char *, uint32_t, bool); 2349 int define(const char *, struct op *); 2350 const char *builtin(const char *, int (*)(const char **)); 2351 struct tbl *findcom(const char *, int); 2352 void flushcom(bool); 2353 int search_access(const char *, int); 2354 const char *search_path(const char *, const char *, int, int *); 2355 void pr_menu(const char * const *); 2356 void pr_list(struct columnise_opts *, char * const *); 2357 int herein(struct ioword *, char **); 2358 /* expr.c */ 2359 int evaluate(const char *, mksh_ari_t *, int, bool); 2360 int v_evaluate(struct tbl *, const char *, volatile int, bool); 2361 /* UTF-8 stuff */ 2362 size_t utf_mbtowc(unsigned int *, const char *); 2363 size_t utf_wctomb(char *, unsigned int); 2364 int utf_widthadj(const char *, const char **); 2365 size_t utf_mbswidth(const char *) MKSH_A_PURE; 2366 const char *utf_skipcols(const char *, int, int *); 2367 size_t utf_ptradj(const char *) MKSH_A_PURE; 2368 #ifdef MIRBSD_BOOTFLOPPY 2369 #define utf_wcwidth(i) wcwidth((wchar_t)(i)) 2370 #else 2371 int utf_wcwidth(unsigned int) MKSH_A_PURE; 2372 #endif 2373 int ksh_access(const char *, int); 2374 struct tbl *tempvar(const char *); 2375 /* funcs.c */ 2376 int c_hash(const char **); 2377 int c_pwd(const char **); 2378 int c_print(const char **); 2379 #ifdef MKSH_PRINTF_BUILTIN 2380 int c_printf(const char **); 2381 #endif 2382 int c_whence(const char **); 2383 int c_command(const char **); 2384 int c_typeset(const char **); 2385 bool valid_alias_name(const char *); 2386 int c_alias(const char **); 2387 int c_unalias(const char **); 2388 int c_let(const char **); 2389 int c_jobs(const char **); 2390 #ifndef MKSH_UNEMPLOYED 2391 int c_fgbg(const char **); 2392 #endif 2393 int c_kill(const char **); 2394 void getopts_reset(int); 2395 int c_getopts(const char **); 2396 #ifndef MKSH_NO_CMDLINE_EDITING 2397 int c_bind(const char **); 2398 #endif 2399 int c_shift(const char **); 2400 int c_umask(const char **); 2401 int c_dot(const char **); 2402 int c_wait(const char **); 2403 int c_read(const char **); 2404 int c_eval(const char **); 2405 int c_trap(const char **); 2406 int c_brkcont(const char **); 2407 int c_exitreturn(const char **); 2408 int c_set(const char **); 2409 int c_unset(const char **); 2410 int c_ulimit(const char **); 2411 int c_times(const char **); 2412 int timex(struct op *, int, volatile int *); 2413 void timex_hook(struct op *, char ** volatile *); 2414 int c_exec(const char **); 2415 int c_test(const char **); 2416 #if HAVE_MKNOD 2417 int c_mknod(const char **); 2418 #endif 2419 int c_realpath(const char **); 2420 int c_rename(const char **); 2421 int c_cat(const char **); 2422 int c_sleep(const char **); 2423 /* histrap.c */ 2424 void init_histvec(void); 2425 void hist_init(Source *); 2426 #if HAVE_PERSISTENT_HISTORY 2427 void hist_finish(void); 2428 #endif 2429 void histsave(int *, const char *, int, bool); 2430 #if !defined(MKSH_SMALL) && HAVE_PERSISTENT_HISTORY 2431 bool histsync(void); 2432 #endif 2433 int c_fc(const char **); 2434 void sethistsize(mksh_ari_t); 2435 #if HAVE_PERSISTENT_HISTORY 2436 void sethistfile(const char *); 2437 #endif 2438 #if !defined(MKSH_NO_CMDLINE_EDITING) && !MKSH_S_NOVI 2439 char **histpos(void) MKSH_A_PURE; 2440 int histnum(int); 2441 #endif 2442 int findhist(int, int, const char *, bool) MKSH_A_PURE; 2443 char **hist_get_newest(bool); 2444 void inittraps(void); 2445 void alarm_init(void); 2446 Trap *gettrap(const char *, bool, bool); 2447 void trapsig(int); 2448 void intrcheck(void); 2449 int fatal_trap_check(void); 2450 int trap_pending(void); 2451 void runtraps(int intr); 2452 void runtrap(Trap *, bool); 2453 void cleartraps(void); 2454 void restoresigs(void); 2455 void settrap(Trap *, const char *); 2456 bool block_pipe(void); 2457 void restore_pipe(void); 2458 int setsig(Trap *, sig_t, int); 2459 void setexecsig(Trap *, int); 2460 #if HAVE_FLOCK || HAVE_LOCK_FCNTL 2461 void mksh_lockfd(int); 2462 void mksh_unlkfd(int); 2463 #endif 2464 /* jobs.c */ 2465 void j_init(void); 2466 void j_exit(void); 2467 #ifndef MKSH_UNEMPLOYED 2468 void j_change(void); 2469 #endif 2470 int exchild(struct op *, int, volatile int *, int); 2471 void startlast(void); 2472 int waitlast(void); 2473 int waitfor(const char *, int *); 2474 int j_kill(const char *, int); 2475 #ifndef MKSH_UNEMPLOYED 2476 int j_resume(const char *, int); 2477 #endif 2478 #if !defined(MKSH_UNEMPLOYED) && HAVE_GETSID 2479 void j_suspend(void); 2480 #endif 2481 int j_jobs(const char *, int, int); 2482 void j_notify(void); 2483 pid_t j_async(void); 2484 int j_stopped_running(void); 2485 /* lex.c */ 2486 int yylex(int); 2487 void yyskiputf8bom(void); 2488 void yyerror(const char *, ...) 2489 MKSH_A_NORETURN 2490 MKSH_A_FORMAT(__printf__, 1, 2); 2491 Source *pushs(int, Area *); 2492 void set_prompt(int, Source *); 2493 int pprompt(const char *, int); 2494 /* main.c */ 2495 int include(const char *, int, const char **, bool); 2496 int command(const char *, int); 2497 int shell(Source * volatile, volatile int); 2498 /* argument MUST NOT be 0 */ 2499 void unwind(int) MKSH_A_NORETURN; 2500 void newenv(int); 2501 void quitenv(struct shf *); 2502 void cleanup_parents_env(void); 2503 void cleanup_proc_env(void); 2504 void errorf(const char *, ...) 2505 MKSH_A_NORETURN 2506 MKSH_A_FORMAT(__printf__, 1, 2); 2507 void errorfx(int, const char *, ...) 2508 MKSH_A_NORETURN 2509 MKSH_A_FORMAT(__printf__, 2, 3); 2510 void warningf(bool, const char *, ...) 2511 MKSH_A_FORMAT(__printf__, 2, 3); 2512 void bi_errorf(const char *, ...) 2513 MKSH_A_FORMAT(__printf__, 1, 2); 2514 #define errorfz() errorf(NULL) 2515 #define errorfxz(rc) errorfx((rc), NULL) 2516 #define bi_errorfz() bi_errorf(NULL) 2517 void internal_errorf(const char *, ...) 2518 MKSH_A_NORETURN 2519 MKSH_A_FORMAT(__printf__, 1, 2); 2520 void internal_warningf(const char *, ...) 2521 MKSH_A_FORMAT(__printf__, 1, 2); 2522 void error_prefix(bool); 2523 void shellf(const char *, ...) 2524 MKSH_A_FORMAT(__printf__, 1, 2); 2525 void shprintf(const char *, ...) 2526 MKSH_A_FORMAT(__printf__, 1, 2); 2527 int can_seek(int); 2528 void initio(void); 2529 void recheck_ctype(void); 2530 int ksh_dup2(int, int, bool); 2531 short savefd(int); 2532 void restfd(int, int); 2533 void openpipe(int *); 2534 void closepipe(int *); 2535 int check_fd(const char *, int, const char **); 2536 void coproc_init(void); 2537 void coproc_read_close(int); 2538 void coproc_readw_close(int); 2539 void coproc_write_close(int); 2540 int coproc_getfd(int, const char **); 2541 void coproc_cleanup(int); 2542 struct temp *maketemp(Area *, Temp_type, struct temp **); 2543 void ktinit(Area *, struct table *, uint8_t); 2544 struct tbl *ktscan(struct table *, const char *, uint32_t, struct tbl ***); 2545 /* table, name (key) to search for, hash(n) */ 2546 #define ktsearch(tp, s, h) ktscan((tp), (s), (h), NULL) 2547 struct tbl *ktenter(struct table *, const char *, uint32_t); 2548 #define ktdelete(p) do { p->flag = 0; } while (/* CONSTCOND */ 0) 2549 void ktwalk(struct tstate *, struct table *); 2550 struct tbl *ktnext(struct tstate *); 2551 struct tbl **ktsort(struct table *); 2552 #ifdef DF 2553 void DF(const char *, ...) 2554 MKSH_A_FORMAT(__printf__, 1, 2); 2555 #endif 2556 /* misc.c */ 2557 size_t option(const char *) MKSH_A_PURE; 2558 char *getoptions(void); 2559 void change_flag(enum sh_flag, int, bool); 2560 void change_xtrace(unsigned char, bool); 2561 int parse_args(const char **, int, bool *); 2562 int getn(const char *, int *); 2563 int gmatchx(const char *, const char *, bool); 2564 bool has_globbing(const char *) MKSH_A_PURE; 2565 int ascstrcmp(const void *, const void *) MKSH_A_PURE; 2566 int ascpstrcmp(const void *, const void *) MKSH_A_PURE; 2567 void ksh_getopt_reset(Getopt *, int); 2568 int ksh_getopt(const char **, Getopt *, const char *); 2569 void print_value_quoted(struct shf *, const char *); 2570 char *quote_value(const char *); 2571 void print_columns(struct columnise_opts *, unsigned int, 2572 void (*)(char *, size_t, unsigned int, const void *), 2573 const void *, size_t, size_t); 2574 void strip_nuls(char *, size_t) 2575 MKSH_A_BOUNDED(__string__, 1, 2); 2576 ssize_t blocking_read(int, char *, size_t) 2577 MKSH_A_BOUNDED(__buffer__, 2, 3); 2578 int reset_nonblock(int); 2579 char *ksh_get_wd(void); 2580 char *do_realpath(const char *); 2581 void simplify_path(char *); 2582 void set_current_wd(const char *); 2583 int c_cd(const char **); 2584 #if defined(MKSH_SMALL) && !defined(MKSH_SMALL_BUT_FAST) 2585 char *strdup_i(const char *, Area *); 2586 char *strndup_i(const char *, size_t, Area *); 2587 #endif 2588 int unbksl(bool, int (*)(void), void (*)(int)); 2589 #ifdef __OS2__ 2590 /* os2.c */ 2591 void os2_init(int *, const char ***); 2592 void setextlibpath(const char *, const char *); 2593 int access_ex(int (*)(const char *, int), const char *, int); 2594 int stat_ex(const char *, struct stat *); 2595 const char *real_exec_name(const char *); 2596 #endif 2597 /* shf.c */ 2598 struct shf *shf_open(const char *, int, int, int); 2599 struct shf *shf_fdopen(int, int, struct shf *); 2600 struct shf *shf_reopen(int, int, struct shf *); 2601 struct shf *shf_sopen(char *, ssize_t, int, struct shf *); 2602 int shf_close(struct shf *); 2603 int shf_fdclose(struct shf *); 2604 char *shf_sclose(struct shf *); 2605 int shf_flush(struct shf *); 2606 ssize_t shf_read(char *, ssize_t, struct shf *); 2607 char *shf_getse(char *, ssize_t, struct shf *); 2608 int shf_getchar(struct shf *s); 2609 int shf_ungetc(int, struct shf *); 2610 #if defined(MKSH_SMALL) && !defined(MKSH_SMALL_BUT_FAST) 2611 int shf_getc(struct shf *); 2612 int shf_putc(int, struct shf *); 2613 #else 2614 #define shf_getc shf_getc_i 2615 #define shf_putc shf_putc_i 2616 #endif 2617 int shf_putchar(int, struct shf *); 2618 ssize_t shf_puts(const char *, struct shf *); 2619 ssize_t shf_write(const char *, ssize_t, struct shf *); 2620 ssize_t shf_fprintf(struct shf *, const char *, ...) 2621 MKSH_A_FORMAT(__printf__, 2, 3); 2622 ssize_t shf_snprintf(char *, ssize_t, const char *, ...) 2623 MKSH_A_FORMAT(__printf__, 3, 4) 2624 MKSH_A_BOUNDED(__string__, 1, 2); 2625 char *shf_smprintf(const char *, ...) 2626 MKSH_A_FORMAT(__printf__, 1, 2); 2627 ssize_t shf_vfprintf(struct shf *, const char *, va_list) 2628 MKSH_A_FORMAT(__printf__, 2, 0); 2629 void set_ifs(const char *); 2630 /* syn.c */ 2631 void initkeywords(void); 2632 struct op *compile(Source *, bool, bool); 2633 bool parse_usec(const char *, struct timeval *); 2634 char *yyrecursive(int); 2635 void yyrecursive_pop(bool); 2636 /* tree.c */ 2637 void fptreef(struct shf *, int, const char *, ...); 2638 char *snptreef(char *, ssize_t, const char *, ...); 2639 struct op *tcopy(struct op *, Area *); 2640 char *wdcopy(const char *, Area *); 2641 const char *wdscan(const char *, int); 2642 #define WDS_TPUTS BIT(0) /* tputS (dumpwdvar) mode */ 2643 char *wdstrip(const char *, int); 2644 void tfree(struct op *, Area *); 2645 void dumpchar(struct shf *, unsigned char); 2646 void dumptree(struct shf *, struct op *); 2647 void dumpwdvar(struct shf *, const char *); 2648 void dumpioact(struct shf *shf, struct op *t); 2649 void vistree(char *, size_t, struct op *) 2650 MKSH_A_BOUNDED(__string__, 1, 2); 2651 void fpFUNCTf(struct shf *, int, bool, const char *, struct op *); 2652 /* var.c */ 2653 void newblock(void); 2654 void popblock(void); 2655 void initvar(void); 2656 struct block *varsearch(struct block *, struct tbl **, const char *, uint32_t); 2657 struct tbl *global(const char *); 2658 struct tbl *isglobal(const char *, bool); 2659 struct tbl *local(const char *, bool); 2660 char *str_val(struct tbl *); 2661 int setstr(struct tbl *, const char *, int); 2662 struct tbl *setint_v(struct tbl *, struct tbl *, bool); 2663 void setint(struct tbl *, mksh_ari_t); 2664 void setint_n(struct tbl *, mksh_ari_t, int); 2665 struct tbl *typeset(const char *, uint32_t, uint32_t, int, int); 2666 void unset(struct tbl *, int); 2667 const char *skip_varname(const char *, bool) MKSH_A_PURE; 2668 const char *skip_wdvarname(const char *, bool) MKSH_A_PURE; 2669 int is_wdvarname(const char *, bool) MKSH_A_PURE; 2670 int is_wdvarassign(const char *) MKSH_A_PURE; 2671 struct tbl *arraysearch(struct tbl *, uint32_t); 2672 char **makenv(void); 2673 void change_winsz(void); 2674 size_t array_ref_len(const char *) MKSH_A_PURE; 2675 char *arrayname(const char *); 2676 mksh_uari_t set_array(const char *, bool, const char **); 2677 uint32_t hash(const void *) MKSH_A_PURE; 2678 uint32_t chvt_rndsetup(const void *, size_t) MKSH_A_PURE; 2679 mksh_ari_t rndget(void); 2680 void rndset(unsigned long); 2681 void rndpush(const void *); 2682 void record_match(const char *); 2683 2684 enum Test_op { 2685 /* non-operator */ 2686 TO_NONOP = 0, 2687 /* unary operators */ 2688 TO_STNZE, TO_STZER, TO_ISSET, TO_OPTION, 2689 TO_FILAXST, 2690 TO_FILEXST, 2691 TO_FILREG, TO_FILBDEV, TO_FILCDEV, TO_FILSYM, TO_FILFIFO, TO_FILSOCK, 2692 TO_FILCDF, TO_FILID, TO_FILGID, TO_FILSETG, TO_FILSTCK, TO_FILUID, 2693 TO_FILRD, TO_FILGZ, TO_FILTT, TO_FILSETU, TO_FILWR, TO_FILEX, 2694 /* binary operators */ 2695 TO_STEQL, TO_STNEQ, TO_STLT, TO_STGT, TO_INTEQ, TO_INTNE, TO_INTGT, 2696 TO_INTGE, TO_INTLT, TO_INTLE, TO_FILEQ, TO_FILNT, TO_FILOT, 2697 /* not an operator */ 2698 TO_NONNULL /* !TO_NONOP */ 2699 }; 2700 typedef enum Test_op Test_op; 2701 2702 /* Used by Test_env.isa() (order important - used to index *_tokens[] arrays) */ 2703 enum Test_meta { 2704 TM_OR, /* -o or || */ 2705 TM_AND, /* -a or && */ 2706 TM_NOT, /* ! */ 2707 TM_OPAREN, /* ( */ 2708 TM_CPAREN, /* ) */ 2709 TM_UNOP, /* unary operator */ 2710 TM_BINOP, /* binary operator */ 2711 TM_END /* end of input */ 2712 }; 2713 typedef enum Test_meta Test_meta; 2714 2715 #define TEF_ERROR BIT(0) /* set if we've hit an error */ 2716 #define TEF_DBRACKET BIT(1) /* set if [[ .. ]] test */ 2717 2718 typedef struct test_env { 2719 union { 2720 const char **wp; /* used by ptest_* */ 2721 XPtrV *av; /* used by dbtestp_* */ 2722 } pos; 2723 const char **wp_end; /* used by ptest_* */ 2724 Test_op (*isa)(struct test_env *, Test_meta); 2725 const char *(*getopnd) (struct test_env *, Test_op, bool); 2726 int (*eval)(struct test_env *, Test_op, const char *, const char *, bool); 2727 void (*error)(struct test_env *, int, const char *); 2728 int flags; /* TEF_* */ 2729 } Test_env; 2730 2731 extern const char * const dbtest_tokens[]; 2732 2733 Test_op test_isop(Test_meta, const char *) MKSH_A_PURE; 2734 int test_eval(Test_env *, Test_op, const char *, const char *, bool); 2735 int test_parse(Test_env *); 2736 2737 /* tty_fd is not opened O_BINARY, it's thus never read/written */ 2738 EXTERN int tty_fd E_INIT(-1); /* dup'd tty file descriptor */ 2739 EXTERN bool tty_devtty; /* true if tty_fd is from /dev/tty */ 2740 EXTERN mksh_ttyst tty_state; /* saved tty state */ 2741 EXTERN bool tty_hasstate; /* true if tty_state is valid */ 2742 2743 extern int tty_init_fd(void); /* initialise tty_fd, tty_devtty */ 2744 2745 #ifdef __OS2__ 2746 #define binopen2(path,flags) __extension__({ \ 2747 int binopen2_fd = open((path), (flags) | O_BINARY); \ 2748 if (binopen2_fd >= 0) \ 2749 setmode(binopen2_fd, O_BINARY); \ 2750 (binopen2_fd); \ 2751 }) 2752 #define binopen3(path,flags,mode) __extension__({ \ 2753 int binopen3_fd = open((path), (flags) | O_BINARY, (mode)); \ 2754 if (binopen3_fd >= 0) \ 2755 setmode(binopen3_fd, O_BINARY); \ 2756 (binopen3_fd); \ 2757 }) 2758 #else 2759 #define binopen2(path,flags) open((path), (flags) | O_BINARY) 2760 #define binopen3(path,flags,mode) open((path), (flags) | O_BINARY, (mode)) 2761 #endif 2762 2763 #ifdef MKSH_DOSPATH 2764 #define mksh_drvltr(s) __extension__({ \ 2765 const char *mksh_drvltr_s = (s); \ 2766 (ctype(mksh_drvltr_s[0], C_ALPHA) && mksh_drvltr_s[1] == ':'); \ 2767 }) 2768 #define mksh_abspath(s) __extension__({ \ 2769 const char *mksh_abspath_s = (s); \ 2770 (mksh_cdirsep(mksh_abspath_s[0]) || \ 2771 (mksh_drvltr(mksh_abspath_s) && \ 2772 mksh_cdirsep(mksh_abspath_s[2]))); \ 2773 }) 2774 #define mksh_cdirsep(c) __extension__({ \ 2775 char mksh_cdirsep_c = (c); \ 2776 (mksh_cdirsep_c == '/' || mksh_cdirsep_c == '\\'); \ 2777 }) 2778 #define mksh_sdirsep(s) strpbrk((s), "/\\") 2779 #define mksh_vdirsep(s) __extension__({ \ 2780 const char *mksh_vdirsep_s = (s); \ 2781 (((mksh_drvltr(mksh_vdirsep_s) && \ 2782 !mksh_cdirsep(mksh_vdirsep_s[2])) ? (!0) : \ 2783 (mksh_sdirsep(mksh_vdirsep_s) != NULL)) && \ 2784 (strcmp(mksh_vdirsep_s, T_builtin) != 0)); \ 2785 }) 2786 int getdrvwd(char **, unsigned int); 2787 #else 2788 #define mksh_abspath(s) (ord((s)[0]) == ORD('/')) 2789 #define mksh_cdirsep(c) (ord(c) == ORD('/')) 2790 #define mksh_sdirsep(s) strchr((s), '/') 2791 #define mksh_vdirsep(s) vstrchr((s), '/') 2792 #endif 2793 2794 /* be sure not to interfere with anyone else's idea about EXTERN */ 2795 #ifdef EXTERN_DEFINED 2796 # undef EXTERN_DEFINED 2797 # undef EXTERN 2798 #endif 2799 #undef E_INIT 2800 2801 #endif /* !MKSH_INCLUDES_ONLY */ 2802
