1/* $OpenBSD: sh.h,v 1.30 2010/01/04 18:07:11 deraadt Exp $ */ 2/* $OpenBSD: shf.h,v 1.6 2005/12/11 18:53:51 deraadt Exp $ */ 3/* $OpenBSD: table.h,v 1.7 2005/12/11 20:31:21 otto Exp $ */ 4/* $OpenBSD: tree.h,v 1.10 2005/03/28 21:28:22 deraadt Exp $ */ 5/* $OpenBSD: expand.h,v 1.6 2005/03/30 17:16:37 deraadt Exp $ */ 6/* $OpenBSD: lex.h,v 1.11 2006/05/29 18:22:24 otto Exp $ */ 7/* $OpenBSD: proto.h,v 1.33 2010/05/19 17:36:08 jasper 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, 2011 13 * Thorsten Glaser <tg@mirbsd.org> 14 * 15 * Provided that these terms and disclaimer and all copyright notices 16 * are retained or reproduced in an accompanying document, permission 17 * is granted to deal in this work without restriction, including unâ 18 * limited rights to use, publicly perform, distribute, sell, modify, 19 * merge, give away, or sublicence. 20 * 21 * This work is provided âAS ISâ and WITHOUT WARRANTY of any kind, to 22 * the utmost extent permitted by applicable law, neither express nor 23 * implied; without malicious intent or gross negligence. In no event 24 * may a licensor, author or contributor be held liable for indirect, 25 * direct, other damage, loss, or other issues arising in any way out 26 * of dealing in the work, even if advised of the possibility of such 27 * damage or existence of a defect, except proven that it results out 28 * of said personâs immediate fault when using the work as intended. 29 */ 30 31#ifdef __dietlibc__ 32/* XXX imake style */ 33#define _BSD_SOURCE /* live, BSD, live⣠*/ 34#endif 35 36#if HAVE_SYS_PARAM_H 37#include <sys/param.h> 38#endif 39#include <sys/types.h> 40#include <sys/time.h> 41#include <sys/ioctl.h> 42#if HAVE_SYS_SYSMACROS_H 43#include <sys/sysmacros.h> 44#endif 45#if HAVE_SYS_MKDEV_H 46#include <sys/mkdev.h> 47#endif 48#if HAVE_SYS_MMAN_H 49#include <sys/mman.h> 50#endif 51#include <sys/resource.h> 52#include <sys/stat.h> 53#include <sys/wait.h> 54#include <dirent.h> 55#include <errno.h> 56#include <fcntl.h> 57#if HAVE_LIBGEN_H 58#include <libgen.h> 59#endif 60#if HAVE_LIBUTIL_H 61#include <libutil.h> 62#endif 63#include <limits.h> 64#if HAVE_PATHS_H 65#include <paths.h> 66#endif 67#include <pwd.h> 68#include <setjmp.h> 69#include <signal.h> 70#include <stdarg.h> 71#include <stddef.h> 72#if HAVE_STDINT_H 73#include <stdint.h> 74#endif 75#include <stdio.h> 76#include <stdlib.h> 77#include <string.h> 78#if HAVE_STRINGS_H 79#include <strings.h> 80#endif 81#include <termios.h> 82#include <time.h> 83#if HAVE_ULIMIT_H 84#include <ulimit.h> 85#endif 86#include <unistd.h> 87#if HAVE_VALUES_H 88#include <values.h> 89#endif 90 91#undef __attribute__ 92#if HAVE_ATTRIBUTE_BOUNDED 93#define MKSH_A_BOUNDED(x,y,z) __attribute__((__bounded__ (x, y, z))) 94#else 95#define MKSH_A_BOUNDED(x,y,z) /* nothing */ 96#endif 97#if HAVE_ATTRIBUTE_FORMAT 98#define MKSH_A_FORMAT(x,y,z) __attribute__((__format__ (x, y, z))) 99#else 100#define MKSH_A_FORMAT(x,y,z) /* nothing */ 101#endif 102#if HAVE_ATTRIBUTE_NONNULL 103#define MKSH_A_NONNULL(a) __attribute__(a) 104#else 105#define MKSH_A_NONNULL(a) /* nothing */ 106#endif 107#if HAVE_ATTRIBUTE_NORETURN 108#define MKSH_A_NORETURN __attribute__((__noreturn__)) 109#else 110#define MKSH_A_NORETURN /* nothing */ 111#endif 112#if HAVE_ATTRIBUTE_UNUSED 113#define MKSH_A_UNUSED __attribute__((__unused__)) 114#else 115#define MKSH_A_UNUSED /* nothing */ 116#endif 117#if HAVE_ATTRIBUTE_USED 118#define MKSH_A_USED __attribute__((__used__)) 119#else 120#define MKSH_A_USED /* nothing */ 121#endif 122 123#if defined(MirBSD) && (MirBSD >= 0x09A1) && \ 124 defined(__ELF__) && defined(__GNUC__) && \ 125 !defined(__llvm__) && !defined(__NWCC__) 126/* 127 * We got usable __IDSTRING __COPYRIGHT __RCSID __SCCSID macros 128 * which work for all cases; no need to redefine them using the 129 * "portable" macros from below when we might have the "better" 130 * gcc+ELF specific macros or other system dependent ones. 131 */ 132#else 133#undef __IDSTRING 134#undef __IDSTRING_CONCAT 135#undef __IDSTRING_EXPAND 136#undef __COPYRIGHT 137#undef __RCSID 138#undef __SCCSID 139#define __IDSTRING_CONCAT(l,p) __LINTED__ ## l ## _ ## p 140#define __IDSTRING_EXPAND(l,p) __IDSTRING_CONCAT(l,p) 141#ifdef MKSH_DONT_EMIT_IDSTRING 142#define __IDSTRING(prefix, string) /* nothing */ 143#else 144#define __IDSTRING(prefix, string) \ 145 static const char __IDSTRING_EXPAND(__LINE__,prefix) [] \ 146 MKSH_A_USED = "@(""#)" #prefix ": " string 147#endif 148#define __COPYRIGHT(x) __IDSTRING(copyright,x) 149#define __RCSID(x) __IDSTRING(rcsid,x) 150#define __SCCSID(x) __IDSTRING(sccsid,x) 151#endif 152 153#ifdef EXTERN 154__RCSID("$MirOS: src/bin/mksh/sh.h,v 1.495 2011/10/07 19:51:44 tg Exp $"); 155#endif 156#define MKSH_VERSION "R40 2011/10/07" 157 158#ifndef MKSH_INCLUDES_ONLY 159 160/* extra types */ 161 162#if !HAVE_GETRUSAGE 163#undef rusage 164#undef RUSAGE_SELF 165#undef RUSAGE_CHILDREN 166#define rusage mksh_rusage 167#define RUSAGE_SELF 0 168#define RUSAGE_CHILDREN -1 169 170struct rusage { 171 struct timeval ru_utime; 172 struct timeval ru_stime; 173}; 174#endif 175 176#if !HAVE_RLIM_T 177typedef long rlim_t; 178#endif 179 180#if !HAVE_SIG_T 181#undef sig_t 182typedef void (*sig_t)(int); 183#endif 184 185#if !HAVE_CAN_INTTYPES 186#if !HAVE_CAN_UCBINTS 187typedef signed int int32_t; 188typedef unsigned int uint32_t; 189#else 190typedef u_int32_t uint32_t; 191#endif 192#endif 193 194#if !HAVE_CAN_INT8TYPE 195#if !HAVE_CAN_UCBINT8 196typedef unsigned char uint8_t; 197#else 198typedef u_int8_t uint8_t; 199#endif 200#endif 201 202/* extra macros */ 203 204#ifndef timerclear 205#define timerclear(tvp) \ 206 do { \ 207 (tvp)->tv_sec = (tvp)->tv_usec = 0; \ 208 } while (/* CONSTCOND */ 0) 209#endif 210#ifndef timeradd 211#define timeradd(tvp, uvp, vvp) \ 212 do { \ 213 (vvp)->tv_sec = (tvp)->tv_sec + (uvp)->tv_sec; \ 214 (vvp)->tv_usec = (tvp)->tv_usec + (uvp)->tv_usec; \ 215 if ((vvp)->tv_usec >= 1000000) { \ 216 (vvp)->tv_sec++; \ 217 (vvp)->tv_usec -= 1000000; \ 218 } \ 219 } while (/* CONSTCOND */ 0) 220#endif 221#ifndef timersub 222#define timersub(tvp, uvp, vvp) \ 223 do { \ 224 (vvp)->tv_sec = (tvp)->tv_sec - (uvp)->tv_sec; \ 225 (vvp)->tv_usec = (tvp)->tv_usec - (uvp)->tv_usec; \ 226 if ((vvp)->tv_usec < 0) { \ 227 (vvp)->tv_sec--; \ 228 (vvp)->tv_usec += 1000000; \ 229 } \ 230 } while (/* CONSTCOND */ 0) 231#endif 232 233#define ksh_isdigit(c) (((c) >= '0') && ((c) <= '9')) 234#define ksh_islower(c) (((c) >= 'a') && ((c) <= 'z')) 235#define ksh_isupper(c) (((c) >= 'A') && ((c) <= 'Z')) 236#define ksh_tolower(c) (((c) >= 'A') && ((c) <= 'Z') ? (c) - 'A' + 'a' : (c)) 237#define ksh_toupper(c) (((c) >= 'a') && ((c) <= 'z') ? (c) - 'a' + 'A' : (c)) 238#define ksh_isdash(s) (((s) != NULL) && ((s)[0] == '-') && ((s)[1] == '\0')) 239#define ksh_isspace(c) ((((c) >= 0x09) && ((c) <= 0x0D)) || ((c) == 0x20)) 240 241#ifdef NO_PATH_MAX 242#undef PATH_MAX 243#else 244#ifndef PATH_MAX 245#define PATH_MAX 1024 246#endif 247#endif 248#ifndef SIZE_MAX 249#ifdef SIZE_T_MAX 250#define SIZE_MAX SIZE_T_MAX 251#else 252#define SIZE_MAX ((size_t)-1) 253#endif 254#endif 255#ifndef S_ISLNK 256#define S_ISLNK(m) ((m & 0170000) == 0120000) 257#endif 258#ifndef S_ISSOCK 259#define S_ISSOCK(m) ((m & 0170000) == 0140000) 260#endif 261#if !defined(S_ISCDF) && defined(S_CDF) 262#define S_ISCDF(m) (S_ISDIR(m) && ((m) & S_CDF)) 263#endif 264#ifndef DEFFILEMODE 265#define DEFFILEMODE (S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP|S_IROTH|S_IWOTH) 266#endif 267 268#if !defined(MAP_FAILED) 269/* XXX imake style */ 270# if defined(__linux) 271#define MAP_FAILED ((void *)-1) 272# elif defined(__bsdi__) || defined(__osf__) || defined(__ultrix) 273#define MAP_FAILED ((caddr_t)-1) 274# endif 275#endif 276 277#ifndef NSIG 278#if defined(_NSIG) 279#define NSIG _NSIG 280#elif defined(SIGMAX) 281#define NSIG (SIGMAX+1) 282#endif 283#endif 284 285#undef BAD /* AIX defines that somewhere */ 286 287/* OS-dependent additions (functions, variables, by OS) */ 288 289#if !HAVE_FLOCK_DECL 290extern int flock(int, int); 291#endif 292 293#if !HAVE_GETRUSAGE 294extern int getrusage(int, struct rusage *); 295#endif 296 297#if !HAVE_REVOKE_DECL 298extern int revoke(const char *); 299#endif 300 301#ifdef __ultrix 302/* XXX imake style */ 303int strcasecmp(const char *, const char *); 304#endif 305 306#if !HAVE_STRCASESTR 307const char *stristr(const char *, const char *); 308#endif 309 310#if !HAVE_STRLCPY 311size_t strlcpy(char *, const char *, size_t); 312#endif 313 314#if !HAVE_SYS_SIGLIST_DECL 315extern const char *const sys_siglist[]; 316#endif 317 318#ifdef __INTERIX 319/* XXX imake style */ 320#define makedev mkdev 321extern int __cdecl seteuid(uid_t); 322extern int __cdecl setegid(gid_t); 323#endif 324 325/* remove redundances */ 326 327#if defined(MirBSD) && (MirBSD >= 0x08A8) 328#define MKSH_mirbsd_wcwidth 329#define utf_wcwidth(i) wcwidth((__WCHAR_TYPE__)i) 330extern int wcwidth(__WCHAR_TYPE__); 331#endif 332 333 334/* some useful #defines */ 335#ifdef EXTERN 336# define E_INIT(i) = i 337#else 338# define E_INIT(i) 339# define EXTERN extern 340# define EXTERN_DEFINED 341#endif 342 343/* define bit in flag */ 344#define BIT(i) (1 << (i)) 345#define NELEM(a) (sizeof(a) / sizeof((a)[0])) 346 347/* arithmetics types */ 348typedef int32_t mksh_ari_t; 349typedef uint32_t mksh_uari_t; 350 351/* boolean type (no <stdbool.h> deliberately) */ 352typedef unsigned char mksh_bool; 353#undef bool 354/* false MUST equal 0 */ 355#undef false 356#undef true 357/* access macros for boolean type */ 358#define bool mksh_bool 359/* values must have identity mapping between mksh_bool and short */ 360#define false 0 361#define true 1 362/* make any-type into bool or short */ 363#define tobool(cond) ((cond) ? true : false) 364 365/* these shall be smaller than 100 */ 366#ifdef MKSH_CONSERVATIVE_FDS 367#define NUFILE 32 /* Number of user-accessible files */ 368#define FDBASE 10 /* First file usable by Shell */ 369#else 370#define NUFILE 56 /* Number of user-accessible files */ 371#define FDBASE 24 /* First file usable by Shell */ 372#endif 373 374/* 375 * Make MAGIC a char that might be printed to make bugs more obvious, but 376 * not a char that is used often. Also, can't use the high bit as it causes 377 * portability problems (calling strchr(x, 0x80|'x') is error prone). 378 */ 379#define MAGIC (7) /* prefix for *?[!{,} during expand */ 380#define ISMAGIC(c) ((unsigned char)(c) == MAGIC) 381#define NOT '!' /* might use ^ (ie, [!...] vs [^..]) */ 382 383#define LINE 4096 /* input line size */ 384 385EXTERN const char *safe_prompt; /* safe prompt if PS1 substitution fails */ 386EXTERN const char initvsn[] E_INIT("KSH_VERSION=@(#)MIRBSD KSH " MKSH_VERSION); 387#define KSH_VERSION (initvsn + /* "KSH_VERSION=@(#)" */ 16) 388 389EXTERN const char digits_uc[] E_INIT("0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ"); 390EXTERN const char digits_lc[] E_INIT("0123456789abcdefghijklmnopqrstuvwxyz"); 391 392/* 393 * Evil hack for const correctness due to API brokenness 394 */ 395union mksh_cchack { 396 char *rw; 397 const char *ro; 398}; 399union mksh_ccphack { 400 char **rw; 401 const char **ro; 402}; 403 404/* for const debugging */ 405#if defined(DEBUG) && defined(__GNUC__) && !defined(__ICC) && \ 406 !defined(__INTEL_COMPILER) && !defined(__SUNPRO_C) 407char *ucstrchr(char *, int); 408char *ucstrstr(char *, const char *); 409#undef strchr 410#define strchr ucstrchr 411#define strstr ucstrstr 412#define cstrchr(s,c) ({ \ 413 union mksh_cchack in, out; \ 414 \ 415 in.ro = (s); \ 416 out.rw = ucstrchr(in.rw, (c)); \ 417 (out.ro); \ 418}) 419#define cstrstr(b,l) ({ \ 420 union mksh_cchack in, out; \ 421 \ 422 in.ro = (b); \ 423 out.rw = ucstrstr(in.rw, (l)); \ 424 (out.ro); \ 425}) 426#define vstrchr(s,c) (cstrchr((s), (c)) != NULL) 427#define vstrstr(b,l) (cstrstr((b), (l)) != NULL) 428#define mkssert(e) ((e) ? (void)0 : exit(255)) 429#else /* !DEBUG, !gcc */ 430#define cstrchr(s,c) ((const char *)strchr((s), (c))) 431#define cstrstr(s,c) ((const char *)strstr((s), (c))) 432#define vstrchr(s,c) (strchr((s), (c)) != NULL) 433#define vstrstr(b,l) (strstr((b), (l)) != NULL) 434#define mkssert(e) ((void)0) 435#endif 436 437/* use this ipv strchr(s, 0) but no side effects in s! */ 438#define strnul(s) ((s) + strlen(s)) 439 440#define utf_ptradjx(src, dst) do { \ 441 (dst) = (src) + utf_ptradj(src); \ 442} while (/* CONSTCOND */ 0) 443 444#ifdef MKSH_SMALL 445#define strdupx(d, s, ap) do { \ 446 (d) = strdup_((s), (ap)); \ 447} while (/* CONSTCOND */ 0) 448#define strndupx(d, s, n, ap) do { \ 449 (d) = strndup_((s), (n), (ap)); \ 450} while (/* CONSTCOND */ 0) 451#else 452/* be careful to evaluate arguments only once! */ 453#define strdupx(d, s, ap) do { \ 454 const char *strdup_src = (s); \ 455 char *strdup_dst = NULL; \ 456 \ 457 if (strdup_src != NULL) { \ 458 size_t strdup_len = strlen(strdup_src) + 1; \ 459 strdup_dst = alloc(strdup_len, (ap)); \ 460 memcpy(strdup_dst, strdup_src, strdup_len); \ 461 } \ 462 (d) = strdup_dst; \ 463} while (/* CONSTCOND */ 0) 464#define strndupx(d, s, n, ap) do { \ 465 const char *strdup_src = (s); \ 466 char *strdup_dst = NULL; \ 467 \ 468 if (strdup_src != NULL) { \ 469 size_t strndup_len = (n); \ 470 strdup_dst = alloc(strndup_len + 1, (ap)); \ 471 memcpy(strdup_dst, strdup_src, strndup_len); \ 472 strdup_dst[strndup_len] = '\0'; \ 473 } \ 474 (d) = strdup_dst; \ 475} while (/* CONSTCOND */ 0) 476#endif 477 478#if HAVE_STRCASESTR 479#define stristr(b,l) ((const char *)strcasestr((b), (l))) 480#endif 481 482#ifdef MKSH_SMALL 483#ifndef MKSH_CONSERVATIVE_FDS 484#define MKSH_CONSERVATIVE_FDS /* defined */ 485#endif 486#ifndef MKSH_NOPWNAM 487#define MKSH_NOPWNAM /* defined */ 488#endif 489#ifndef MKSH_S_NOVI 490#define MKSH_S_NOVI 1 491#endif 492#endif 493 494#ifndef MKSH_S_NOVI 495#define MKSH_S_NOVI 0 496#endif 497 498#if defined(MKSH_NOPROSPECTOFWORK) && !defined(MKSH_UNEMPLOYED) 499#define MKSH_UNEMPLOYED 1 500#endif 501 502/* 503 * simple grouping allocator 504 */ 505 506 507/* 0. OS API: where to get memory from and how to free it (grouped) */ 508 509/* malloc(3)/realloc(3) -> free(3) for use by the memory allocator */ 510#define malloc_osi(sz) malloc(sz) 511#define realloc_osi(p,sz) realloc((p), (sz)) 512#define free_osimalloc(p) free(p) 513 514/* malloc(3)/realloc(3) -> free(3) for use by mksh code */ 515#define malloc_osfunc(sz) malloc(sz) 516#define realloc_osfunc(p,sz) realloc((p), (sz)) 517#define free_osfunc(p) free(p) 518 519#if HAVE_MKNOD 520/* setmode(3) -> free(3) */ 521#define free_ossetmode(p) free(p) 522#endif 523 524#if !HAVE_MKSTEMP 525/* tempnam(3) -> free(3) */ 526#define free_ostempnam(p) free(p) 527#endif 528 529#ifdef NO_PATH_MAX 530/* GNU libc: get_current_dir_name(3) -> free(3) */ 531#define free_gnu_gcdn(p) free(p) 532#endif 533 534 535/* 1. internal structure */ 536struct lalloc { 537 struct lalloc *next; 538}; 539 540/* 2. sizes */ 541#define ALLOC_ITEM struct lalloc 542#define ALLOC_SIZE (sizeof(ALLOC_ITEM)) 543 544/* 3. group structure (only the same for lalloc.c) */ 545typedef struct lalloc Area; 546 547 548EXTERN Area aperm; /* permanent object space */ 549#define APERM &aperm 550#define ATEMP &e->area 551 552/* 553 * flags (the order of these enums MUST match the order in misc.c(options[])) 554 */ 555enum sh_flag { 556#define SHFLAGS_ENUMS 557#include "sh_flags.h" 558 FNFLAGS /* (place holder: how many flags are there) */ 559}; 560 561#define Flag(f) (shell_flags[(int)(f)]) 562#define UTFMODE Flag(FUNICODE) 563 564/* 565 * parsing & execution environment 566 */ 567extern struct env { 568 ALLOC_ITEM alloc_INT; /* internal, do not touch */ 569 Area area; /* temporary allocation area */ 570 struct env *oenv; /* link to previous environment */ 571 struct block *loc; /* local variables and functions */ 572 short *savefd; /* original redirected fds */ 573 struct temp *temps; /* temp files */ 574 sigjmp_buf jbuf; /* long jump back to env creator */ 575 short type; /* environment type - see below */ 576 short flags; /* EF_* */ 577} *e; 578 579/* struct env.type values */ 580#define E_NONE 0 /* dummy environment */ 581#define E_PARSE 1 /* parsing command # */ 582#define E_FUNC 2 /* executing function # */ 583#define E_INCL 3 /* including a file via . # */ 584#define E_EXEC 4 /* executing command tree */ 585#define E_LOOP 5 /* executing for/while # */ 586#define E_ERRH 6 /* general error handler # */ 587/* # indicates env has valid jbuf (see unwind()) */ 588 589/* struct env.flag values */ 590#define EF_FUNC_PARSE BIT(0) /* function being parsed */ 591#define EF_BRKCONT_PASS BIT(1) /* set if E_LOOP must pass break/continue on */ 592#define EF_FAKE_SIGDIE BIT(2) /* hack to get info from unwind to quitenv */ 593 594/* Do breaks/continues stop at env type e? */ 595#define STOP_BRKCONT(t) ((t) == E_NONE || (t) == E_PARSE \ 596 || (t) == E_FUNC || (t) == E_INCL) 597/* Do returns stop at env type e? */ 598#define STOP_RETURN(t) ((t) == E_FUNC || (t) == E_INCL) 599 600/* values for siglongjmp(e->jbuf, 0) */ 601#define LRETURN 1 /* return statement */ 602#define LEXIT 2 /* exit statement */ 603#define LERROR 3 /* errorf() called */ 604#define LLEAVE 4 /* untrappable exit/error */ 605#define LINTR 5 /* ^C noticed */ 606#define LBREAK 6 /* break statement */ 607#define LCONTIN 7 /* continue statement */ 608#define LSHELL 8 /* return to interactive shell() */ 609#define LAEXPR 9 /* error in arithmetic expression */ 610 611/* sort of shell global state */ 612EXTERN pid_t procpid; /* PID of executing process */ 613EXTERN int exstat; /* exit status */ 614EXTERN int subst_exstat; /* exit status of last $(..)/`..` */ 615EXTERN struct tbl *vp_pipest; /* global PIPESTATUS array */ 616EXTERN short trap_exstat; /* exit status before running a trap */ 617EXTERN uint8_t trap_nested; /* running nested traps */ 618EXTERN uint8_t shell_flags[FNFLAGS]; 619EXTERN const char *kshname; /* $0 */ 620EXTERN struct { 621 uid_t kshuid_v; /* real UID of shell */ 622 uid_t ksheuid_v; /* effective UID of shell */ 623 gid_t kshgid_v; /* real GID of shell */ 624 gid_t kshegid_v; /* effective GID of shell */ 625 pid_t kshpgrp_v; /* process group of shell */ 626 pid_t kshppid_v; /* PID of parent of shell */ 627 pid_t kshpid_v; /* $$, shell PID */ 628} rndsetupstate; 629 630#define kshpid rndsetupstate.kshpid_v 631#define kshpgrp rndsetupstate.kshpgrp_v 632#define kshuid rndsetupstate.kshuid_v 633#define ksheuid rndsetupstate.ksheuid_v 634#define kshgid rndsetupstate.kshgid_v 635#define kshegid rndsetupstate.kshegid_v 636#define kshppid rndsetupstate.kshppid_v 637 638 639/* option processing */ 640#define OF_CMDLINE 0x01 /* command line */ 641#define OF_SET 0x02 /* set builtin */ 642#define OF_SPECIAL 0x04 /* a special variable changing */ 643#define OF_INTERNAL 0x08 /* set internally by shell */ 644#define OF_FIRSTTIME 0x10 /* as early as possible, once */ 645#define OF_ANY (OF_CMDLINE | OF_SET | OF_SPECIAL | OF_INTERNAL) 646 647struct shoption { 648 const char *name; /* long name of option */ 649 char c; /* character flag (if any) */ 650 unsigned char flags; /* OF_* */ 651}; 652extern const struct shoption options[]; 653 654/* null value for variable; comparison pointer for unset */ 655EXTERN char null[] E_INIT(""); 656/* helpers for string pooling */ 657EXTERN const char Tintovfl[] E_INIT("integer overflow %zu %c %zu prevented"); 658EXTERN const char Toomem[] E_INIT("can't allocate %lu data bytes"); 659#if defined(__GNUC__) 660/* trust this to have string pooling; -Wformat bitches otherwise */ 661#define Tsynerr "syntax error" 662#else 663EXTERN const char Tsynerr[] E_INIT("syntax error"); 664#endif 665EXTERN const char Tselect[] E_INIT("select"); 666EXTERN const char Tr_fc_e_dash[] E_INIT("r=fc -e -"); 667#define Tfc_e_dash (Tr_fc_e_dash + 2) /* "fc -e -" */ 668#define Zfc_e_dash 7 /* strlen(Tfc_e_dash) */ 669EXTERN const char Tlocal_typeset[] E_INIT("local=typeset"); 670#define T_typeset (Tlocal_typeset + 5) /* "=typeset" */ 671#define Ttypeset (Tlocal_typeset + 6) /* "typeset" */ 672EXTERN const char Tpalias[] E_INIT("+alias"); 673#define Talias (Tpalias + 1) /* "alias" */ 674EXTERN const char Tpunalias[] E_INIT("+unalias"); 675#define Tunalias (Tpunalias + 1) /* "unalias" */ 676EXTERN const char Tsgset[] E_INIT("*=set"); 677#define Tset (Tsgset + 2) /* "set" */ 678EXTERN const char Tgbuiltin[] E_INIT("=builtin"); 679#define Tbuiltin (Tgbuiltin + 1) /* "builtin" */ 680EXTERN const char T_function[] E_INIT(" function"); 681#define Tfunction (T_function + 1) /* "function" */ 682 683enum temp_type { 684 TT_HEREDOC_EXP, /* expanded heredoc */ 685 TT_HIST_EDIT /* temp file used for history editing (fc -e) */ 686}; 687typedef enum temp_type Temp_type; 688/* temp/heredoc files. The file is removed when the struct is freed. */ 689struct temp { 690 struct temp *next; 691 struct shf *shf; 692 char *name; 693 int pid; /* pid of process parsed here-doc */ 694 Temp_type type; 695}; 696 697/* 698 * stdio and our IO routines 699 */ 700 701#define shl_spare (&shf_iob[0]) /* for c_read()/c_print() */ 702#define shl_stdout (&shf_iob[1]) 703#define shl_out (&shf_iob[2]) 704EXTERN bool shl_stdout_ok; 705 706/* 707 * trap handlers 708 */ 709typedef struct trap { 710 const char *name; /* short name */ 711 const char *mess; /* descriptive name */ 712 char *trap; /* trap command */ 713 sig_t cursig; /* current handler (valid if TF_ORIG_* set) */ 714 sig_t shtrap; /* shell signal handler */ 715 int signal; /* signal number */ 716 int flags; /* TF_* */ 717 volatile sig_atomic_t set; /* trap pending */ 718} Trap; 719 720/* values for Trap.flags */ 721#define TF_SHELL_USES BIT(0) /* shell uses signal, user can't change */ 722#define TF_USER_SET BIT(1) /* user has (tried to) set trap */ 723#define TF_ORIG_IGN BIT(2) /* original action was SIG_IGN */ 724#define TF_ORIG_DFL BIT(3) /* original action was SIG_DFL */ 725#define TF_EXEC_IGN BIT(4) /* restore SIG_IGN just before exec */ 726#define TF_EXEC_DFL BIT(5) /* restore SIG_DFL just before exec */ 727#define TF_DFL_INTR BIT(6) /* when received, default action is LINTR */ 728#define TF_TTY_INTR BIT(7) /* tty generated signal (see j_waitj) */ 729#define TF_CHANGED BIT(8) /* used by runtrap() to detect trap changes */ 730#define TF_FATAL BIT(9) /* causes termination if not trapped */ 731 732/* values for setsig()/setexecsig() flags argument */ 733#define SS_RESTORE_MASK 0x3 /* how to restore a signal before an exec() */ 734#define SS_RESTORE_CURR 0 /* leave current handler in place */ 735#define SS_RESTORE_ORIG 1 /* restore original handler */ 736#define SS_RESTORE_DFL 2 /* restore to SIG_DFL */ 737#define SS_RESTORE_IGN 3 /* restore to SIG_IGN */ 738#define SS_FORCE BIT(3) /* set signal even if original signal ignored */ 739#define SS_USER BIT(4) /* user is doing the set (ie, trap command) */ 740#define SS_SHTRAP BIT(5) /* trap for internal use (ALRM, CHLD, WINCH) */ 741 742#define ksh_SIGEXIT 0 /* for trap EXIT */ 743#define ksh_SIGERR NSIG /* for trap ERR */ 744 745EXTERN volatile sig_atomic_t trap; /* traps pending? */ 746EXTERN volatile sig_atomic_t intrsig; /* pending trap interrupts command */ 747EXTERN volatile sig_atomic_t fatal_trap; /* received a fatal signal */ 748extern Trap sigtraps[NSIG+1]; 749 750/* got_winch = 1 when we need to re-adjust the window size */ 751#ifdef SIGWINCH 752EXTERN volatile sig_atomic_t got_winch E_INIT(1); 753#else 754#define got_winch true 755#endif 756 757/* 758 * TMOUT support 759 */ 760/* values for ksh_tmout_state */ 761enum tmout_enum { 762 TMOUT_EXECUTING = 0, /* executing commands */ 763 TMOUT_READING, /* waiting for input */ 764 TMOUT_LEAVING /* have timed out */ 765}; 766EXTERN unsigned int ksh_tmout; 767EXTERN enum tmout_enum ksh_tmout_state E_INIT(TMOUT_EXECUTING); 768 769/* For "You have stopped jobs" message */ 770EXTERN int really_exit; 771 772/* 773 * fast character classes 774 */ 775#define C_ALPHA BIT(0) /* a-z_A-Z */ 776#define C_DIGIT BIT(1) /* 0-9 */ 777#define C_LEX1 BIT(2) /* \t \n\0|&;<>() */ 778#define C_VAR1 BIT(3) /* *@#!$-? */ 779#define C_IFSWS BIT(4) /* \t \n (IFS white space) */ 780#define C_SUBOP1 BIT(5) /* "=-+?" */ 781#define C_QUOTE BIT(6) /* \t\n "#$&'()*;<=>?[\]`| (needing quoting) */ 782#define C_IFS BIT(7) /* $IFS */ 783#define C_SUBOP2 BIT(8) /* "#%" (magic, see below) */ 784 785extern unsigned char chtypes[]; 786 787#define ctype(c, t) tobool( ((t) == C_SUBOP2) ? \ 788 (((c) == '#' || (c) == '%') ? 1 : 0) : \ 789 (chtypes[(unsigned char)(c)] & (t)) ) 790#define ksh_isalphx(c) ctype((c), C_ALPHA) 791#define ksh_isalnux(c) ctype((c), C_ALPHA | C_DIGIT) 792 793EXTERN int ifs0 E_INIT(' '); /* for "$*" */ 794 795/* Argument parsing for built-in commands and getopts command */ 796 797/* Values for Getopt.flags */ 798#define GF_ERROR BIT(0) /* call errorf() if there is an error */ 799#define GF_PLUSOPT BIT(1) /* allow +c as an option */ 800#define GF_NONAME BIT(2) /* don't print argv[0] in errors */ 801 802/* Values for Getopt.info */ 803#define GI_MINUS BIT(0) /* an option started with -... */ 804#define GI_PLUS BIT(1) /* an option started with +... */ 805#define GI_MINUSMINUS BIT(2) /* arguments were ended with -- */ 806 807/* in case some OS defines these */ 808#undef optarg 809#undef optind 810 811typedef struct { 812 const char *optarg; 813 int optind; 814 int uoptind; /* what user sees in $OPTIND */ 815 int flags; /* see GF_* */ 816 int info; /* see GI_* */ 817 unsigned int p; /* 0 or index into argv[optind - 1] */ 818 char buf[2]; /* for bad option OPTARG value */ 819} Getopt; 820 821EXTERN Getopt builtin_opt; /* for shell builtin commands */ 822EXTERN Getopt user_opt; /* parsing state for getopts builtin command */ 823 824/* This for co-processes */ 825 826/* something that won't (realisticly) wrap */ 827typedef int32_t Coproc_id; 828 829struct coproc { 830 void *job; /* 0 or job of co-process using input pipe */ 831 int read; /* pipe from co-process's stdout */ 832 int readw; /* other side of read (saved temporarily) */ 833 int write; /* pipe to co-process's stdin */ 834 int njobs; /* number of live jobs using output pipe */ 835 Coproc_id id; /* id of current output pipe */ 836}; 837EXTERN struct coproc coproc; 838 839#ifndef MKSH_NOPROSPECTOFWORK 840/* used in jobs.c and by coprocess stuff in exec.c and select() calls */ 841EXTERN sigset_t sm_default, sm_sigchld; 842#endif 843 844/* name of called builtin function (used by error functions) */ 845EXTERN const char *builtin_argv0; 846/* flags of called builtin (SPEC_BI, etc.) */ 847EXTERN uint32_t builtin_flag; 848 849/* current working directory */ 850EXTERN char *current_wd; 851 852/* 853 * Minimum required space to work with on a line - if the prompt leaves 854 * less space than this on a line, the prompt is truncated. 855 */ 856#define MIN_EDIT_SPACE 7 857/* 858 * Minimum allowed value for x_cols: 2 for prompt, 3 for " < " at end of line 859 */ 860#define MIN_COLS (2 + MIN_EDIT_SPACE + 3) 861#define MIN_LINS 3 862EXTERN mksh_ari_t x_cols E_INIT(80); /* tty columns */ 863EXTERN mksh_ari_t x_lins E_INIT(-1); /* tty lines */ 864 865/* These to avoid bracket matching problems */ 866#define OPAREN '(' 867#define CPAREN ')' 868#define OBRACK '[' 869#define CBRACK ']' 870#define OBRACE '{' 871#define CBRACE '}' 872 873 874/* Determine the location of the system (common) profile */ 875 876/* This is deliberately not configurable via CPPFLAGS */ 877#if defined(ANDROID) 878#define MKSH_ETC_LOCATION "/system/etc" 879#else 880#define MKSH_ETC_LOCATION "/etc" 881#endif 882 883#define MKSH_SYSTEM_PROFILE MKSH_ETC_LOCATION "/profile" 884#define MKSH_SUID_PROFILE MKSH_ETC_LOCATION "/suid_profile" 885 886 887/* Used by v_evaluate() and setstr() to control action when error occurs */ 888#define KSH_UNWIND_ERROR 0 /* unwind the stack (longjmp) */ 889#define KSH_RETURN_ERROR 1 /* return 1/0 for success/failure */ 890 891/* 892 * Shell file I/O routines 893 */ 894 895#define SHF_BSIZE 512 896 897#define shf_fileno(shf) ((shf)->fd) 898#define shf_setfileno(shf,nfd) ((shf)->fd = (nfd)) 899#define shf_getc_(shf) ((shf)->rnleft > 0 ? \ 900 (shf)->rnleft--, *(shf)->rp++ : \ 901 shf_getchar(shf)) 902#define shf_putc_(c, shf) ((shf)->wnleft == 0 ? \ 903 shf_putchar((c), (shf)) : \ 904 ((shf)->wnleft--, *(shf)->wp++ = (c))) 905#define shf_eof(shf) ((shf)->flags & SHF_EOF) 906#define shf_error(shf) ((shf)->flags & SHF_ERROR) 907#define shf_errno(shf) ((shf)->errnosv) 908#define shf_clearerr(shf) ((shf)->flags &= ~(SHF_EOF | SHF_ERROR)) 909 910/* Flags passed to shf_*open() */ 911#define SHF_RD 0x0001 912#define SHF_WR 0x0002 913#define SHF_RDWR (SHF_RD|SHF_WR) 914#define SHF_ACCMODE 0x0003 /* mask */ 915#define SHF_GETFL 0x0004 /* use fcntl() to figure RD/WR flags */ 916#define SHF_UNBUF 0x0008 /* unbuffered I/O */ 917#define SHF_CLEXEC 0x0010 /* set close on exec flag */ 918#define SHF_MAPHI 0x0020 /* make fd > FDBASE (and close orig) 919 * (shf_open() only) */ 920#define SHF_DYNAMIC 0x0040 /* string: increase buffer as needed */ 921#define SHF_INTERRUPT 0x0080 /* EINTR in read/write causes error */ 922/* Flags used internally */ 923#define SHF_STRING 0x0100 /* a string, not a file */ 924#define SHF_ALLOCS 0x0200 /* shf and shf->buf were alloc()ed */ 925#define SHF_ALLOCB 0x0400 /* shf->buf was alloc()ed */ 926#define SHF_ERROR 0x0800 /* read()/write() error */ 927#define SHF_EOF 0x1000 /* read eof (sticky) */ 928#define SHF_READING 0x2000 /* currently reading: rnleft,rp valid */ 929#define SHF_WRITING 0x4000 /* currently writing: wnleft,wp valid */ 930 931 932struct shf { 933 Area *areap; /* area shf/buf were allocated in */ 934 unsigned char *rp; /* read: current position in buffer */ 935 unsigned char *wp; /* write: current position in buffer */ 936 unsigned char *buf; /* buffer */ 937 ssize_t bsize; /* actual size of buf */ 938 ssize_t rbsize; /* size of buffer (1 if SHF_UNBUF) */ 939 ssize_t rnleft; /* read: how much data left in buffer */ 940 ssize_t wbsize; /* size of buffer (0 if SHF_UNBUF) */ 941 ssize_t wnleft; /* write: how much space left in buffer */ 942 int flags; /* see SHF_* */ 943 int fd; /* file descriptor */ 944 int errnosv; /* saved value of errno after error */ 945}; 946 947extern struct shf shf_iob[]; 948 949struct table { 950 Area *areap; /* area to allocate entries */ 951 struct tbl **tbls; /* hashed table items */ 952 size_t nfree; /* free table entries */ 953 uint8_t tshift; /* table size (2^tshift) */ 954}; 955 956/* table item */ 957struct tbl { 958 /* Area to allocate from */ 959 Area *areap; 960 /* value */ 961 union { 962 char *s; /* string */ 963 mksh_ari_t i; /* integer */ 964 mksh_uari_t u; /* unsigned integer */ 965 int (*f)(const char **); /* built-in command */ 966 struct op *t; /* "function" tree */ 967 } val; 968 union { 969 struct tbl *array; /* array values */ 970 const char *fpath; /* temporary path to undef function */ 971 } u; 972 union { 973 int field; /* field with for -L/-R/-Z */ 974 int errnov; /* CEXEC/CTALIAS */ 975 } u2; 976 union { 977 uint32_t hval; /* hash(name) */ 978 uint32_t index; /* index for an array */ 979 } ua; 980 /* 981 * command type (see below), base (if INTEGER), 982 * offset from val.s of value (if EXPORT) 983 */ 984 int type; 985 /* flags (see below) */ 986 uint32_t flag; 987 988 /* actually longer: name (variable length) */ 989 char name[4]; 990}; 991 992/* common flag bits */ 993#define ALLOC BIT(0) /* val.s has been allocated */ 994#define DEFINED BIT(1) /* is defined in block */ 995#define ISSET BIT(2) /* has value, vp->val.[si] */ 996#define EXPORT BIT(3) /* exported variable/function */ 997#define TRACE BIT(4) /* var: user flagged, func: execution tracing */ 998/* (start non-common flags at 8) */ 999/* flag bits used for variables */ 1000#define SPECIAL BIT(8) /* PATH, IFS, SECONDS, etc */ 1001#define INTEGER BIT(9) /* val.i contains integer value */ 1002#define RDONLY BIT(10) /* read-only variable */ 1003#define LOCAL BIT(11) /* for local typeset() */ 1004#define ARRAY BIT(13) /* array */ 1005#define LJUST BIT(14) /* left justify */ 1006#define RJUST BIT(15) /* right justify */ 1007#define ZEROFIL BIT(16) /* 0 filled if RJUSTIFY, strip 0s if LJUSTIFY */ 1008#define LCASEV BIT(17) /* convert to lower case */ 1009#define UCASEV_AL BIT(18) /* convert to upper case / autoload function */ 1010#define INT_U BIT(19) /* unsigned integer */ 1011#define INT_L BIT(20) /* long integer (no-op but used as magic) */ 1012#define IMPORT BIT(21) /* flag to typeset(): no arrays, must have = */ 1013#define LOCAL_COPY BIT(22) /* with LOCAL - copy attrs from existing var */ 1014#define EXPRINEVAL BIT(23) /* contents currently being evaluated */ 1015#define EXPRLVALUE BIT(24) /* useable as lvalue (temp flag) */ 1016#define AINDEX BIT(25) /* array index >0 = ua.index filled in */ 1017#define ASSOC BIT(26) /* ARRAY ? associative : reference */ 1018/* flag bits used for taliases/builtins/aliases/keywords/functions */ 1019#define KEEPASN BIT(8) /* keep command assignments (eg, var=x cmd) */ 1020#define FINUSE BIT(9) /* function being executed */ 1021#define FDELETE BIT(10) /* function deleted while it was executing */ 1022#define FKSH BIT(11) /* function defined with function x (vs x()) */ 1023#define SPEC_BI BIT(12) /* a POSIX special builtin */ 1024#define REG_BI BIT(13) /* a POSIX regular builtin */ 1025/* 1026 * Attributes that can be set by the user (used to decide if an unset 1027 * param should be repoted by set/typeset). Does not include ARRAY or 1028 * LOCAL. 1029 */ 1030#define USERATTRIB (EXPORT|INTEGER|RDONLY|LJUST|RJUST|ZEROFIL|\ 1031 LCASEV|UCASEV_AL|INT_U|INT_L) 1032 1033#define arrayindex(vp) ((unsigned long)((vp)->flag & AINDEX ? \ 1034 (vp)->ua.index : 0)) 1035 1036EXTERN enum { 1037 SRF_NOP, 1038 SRF_ENABLE, 1039 SRF_DISABLE 1040} set_refflag E_INIT(SRF_NOP); 1041 1042/* command types */ 1043#define CNONE 0 /* undefined */ 1044#define CSHELL 1 /* built-in */ 1045#define CFUNC 2 /* function */ 1046#define CEXEC 4 /* executable command */ 1047#define CALIAS 5 /* alias */ 1048#define CKEYWD 6 /* keyword */ 1049#define CTALIAS 7 /* tracked alias */ 1050 1051/* Flags for findcom()/comexec() */ 1052#define FC_SPECBI BIT(0) /* special builtin */ 1053#define FC_FUNC BIT(1) /* function builtin */ 1054#define FC_REGBI BIT(2) /* regular builtin */ 1055#define FC_UNREGBI BIT(3) /* un-regular builtin (!special,!regular) */ 1056#define FC_BI (FC_SPECBI|FC_REGBI|FC_UNREGBI) 1057#define FC_PATH BIT(4) /* do path search */ 1058#define FC_DEFPATH BIT(5) /* use default path in path search */ 1059 1060 1061#define AF_ARGV_ALLOC 0x1 /* argv[] array allocated */ 1062#define AF_ARGS_ALLOCED 0x2 /* argument strings allocated */ 1063#define AI_ARGV(a, i) ((i) == 0 ? (a).argv[0] : (a).argv[(i) - (a).skip]) 1064#define AI_ARGC(a) ((a).ai_argc - (a).skip) 1065 1066/* Argument info. Used for $#, $* for shell, functions, includes, etc. */ 1067struct arg_info { 1068 const char **argv; 1069 int flags; /* AF_* */ 1070 int ai_argc; 1071 int skip; /* first arg is argv[0], second is argv[1 + skip] */ 1072}; 1073 1074/* 1075 * activation record for function blocks 1076 */ 1077struct block { 1078 Area area; /* area to allocate things */ 1079 const char **argv; 1080 char *error; /* error handler */ 1081 char *exit; /* exit handler */ 1082 struct block *next; /* enclosing block */ 1083 struct table vars; /* local variables */ 1084 struct table funs; /* local functions */ 1085 Getopt getopts_state; 1086 int argc; 1087 int flags; /* see BF_* */ 1088}; 1089 1090/* Values for struct block.flags */ 1091#define BF_DOGETOPTS BIT(0) /* save/restore getopts state */ 1092 1093/* 1094 * Used by ktwalk() and ktnext() routines. 1095 */ 1096struct tstate { 1097 struct tbl **next; 1098 ssize_t left; 1099}; 1100 1101EXTERN struct table taliases; /* tracked aliases */ 1102EXTERN struct table builtins; /* built-in commands */ 1103EXTERN struct table aliases; /* aliases */ 1104EXTERN struct table keywords; /* keywords */ 1105#ifndef MKSH_NOPWNAM 1106EXTERN struct table homedirs; /* homedir() cache */ 1107#endif 1108 1109struct builtin { 1110 const char *name; 1111 int (*func)(const char **); 1112}; 1113 1114extern const struct builtin mkshbuiltins[]; 1115 1116/* values for set_prompt() */ 1117#define PS1 0 /* command */ 1118#define PS2 1 /* command continuation */ 1119 1120EXTERN char *path; /* copy of either PATH or def_path */ 1121EXTERN const char *def_path; /* path to use if PATH not set */ 1122EXTERN char *tmpdir; /* TMPDIR value */ 1123EXTERN const char *prompt; 1124EXTERN int cur_prompt; /* PS1 or PS2 */ 1125EXTERN int current_lineno; /* LINENO value */ 1126 1127#define NOBLOCK ((struct op *)NULL) 1128#define NOWORD ((char *)NULL) 1129#define NOWORDS ((char **)NULL) 1130 1131/* 1132 * Description of a command or an operation on commands. 1133 */ 1134struct op { 1135 const char **args; /* arguments to a command */ 1136 char **vars; /* variable assignments */ 1137 struct ioword **ioact; /* IO actions (eg, < > >>) */ 1138 struct op *left, *right; /* descendents */ 1139 char *str; /* word for case; identifier for for, 1140 * select, and functions; 1141 * path to execute for TEXEC; 1142 * time hook for TCOM. 1143 */ 1144 int lineno; /* TCOM/TFUNC: LINENO for this */ 1145 short type; /* operation type, see below */ 1146 /* WARNING: newtp(), tcopy() use evalflags = 0 to clear union */ 1147 union { 1148 /* TCOM: arg expansion eval() flags */ 1149 short evalflags; 1150 /* TFUNC: function x (vs x()) */ 1151 short ksh_func; 1152 /* TPAT: termination character */ 1153 char charflag; 1154 } u; 1155}; 1156 1157/* Tree.type values */ 1158#define TEOF 0 1159#define TCOM 1 /* command */ 1160#define TPAREN 2 /* (c-list) */ 1161#define TPIPE 3 /* a | b */ 1162#define TLIST 4 /* a ; b */ 1163#define TOR 5 /* || */ 1164#define TAND 6 /* && */ 1165#define TBANG 7 /* ! */ 1166#define TDBRACKET 8 /* [[ .. ]] */ 1167#define TFOR 9 1168#define TSELECT 10 1169#define TCASE 11 1170#define TIF 12 1171#define TWHILE 13 1172#define TUNTIL 14 1173#define TELIF 15 1174#define TPAT 16 /* pattern in case */ 1175#define TBRACE 17 /* {c-list} */ 1176#define TASYNC 18 /* c & */ 1177#define TFUNCT 19 /* function name { command; } */ 1178#define TTIME 20 /* time pipeline */ 1179#define TEXEC 21 /* fork/exec eval'd TCOM */ 1180#define TCOPROC 22 /* coprocess |& */ 1181 1182/* 1183 * prefix codes for words in command tree 1184 */ 1185#define EOS 0 /* end of string */ 1186#define CHAR 1 /* unquoted character */ 1187#define QCHAR 2 /* quoted character */ 1188#define COMSUB 3 /* $() substitution (0 terminated) */ 1189#define EXPRSUB 4 /* $(()) substitution (0 terminated) */ 1190#define OQUOTE 5 /* opening " or ' */ 1191#define CQUOTE 6 /* closing " or ' */ 1192#define OSUBST 7 /* opening ${ subst (followed by { or X) */ 1193#define CSUBST 8 /* closing } of above (followed by } or X) */ 1194#define OPAT 9 /* open pattern: *(, @(, etc. */ 1195#define SPAT 10 /* separate pattern: | */ 1196#define CPAT 11 /* close pattern: ) */ 1197#define ADELIM 12 /* arbitrary delimiter: ${foo:2:3} ${foo/bar/baz} */ 1198 1199/* 1200 * IO redirection 1201 */ 1202struct ioword { 1203 int unit; /* unit affected */ 1204 int flag; /* action (below) */ 1205 char *name; /* file name (unused if heredoc) */ 1206 char *delim; /* delimiter for <<,<<- */ 1207 char *heredoc; /* content of heredoc */ 1208}; 1209 1210/* ioword.flag - type of redirection */ 1211#define IOTYPE 0xF /* type: bits 0:3 */ 1212#define IOREAD 0x1 /* < */ 1213#define IOWRITE 0x2 /* > */ 1214#define IORDWR 0x3 /* <>: todo */ 1215#define IOHERE 0x4 /* << (here file) */ 1216#define IOCAT 0x5 /* >> */ 1217#define IODUP 0x6 /* <&/>& */ 1218#define IOEVAL BIT(4) /* expand in << */ 1219#define IOSKIP BIT(5) /* <<-, skip ^\t* */ 1220#define IOCLOB BIT(6) /* >|, override -o noclobber */ 1221#define IORDUP BIT(7) /* x<&y (as opposed to x>&y) */ 1222#define IONAMEXP BIT(8) /* name has been expanded */ 1223#define IOBASH BIT(9) /* &> etc. */ 1224#define IOHERESTR BIT(10) /* <<< (here string) */ 1225#define IONDELIM BIT(11) /* null delimiter (<<) */ 1226 1227/* execute/exchild flags */ 1228#define XEXEC BIT(0) /* execute without forking */ 1229#define XFORK BIT(1) /* fork before executing */ 1230#define XBGND BIT(2) /* command & */ 1231#define XPIPEI BIT(3) /* input is pipe */ 1232#define XPIPEO BIT(4) /* output is pipe */ 1233#define XPIPE (XPIPEI|XPIPEO) /* member of pipe */ 1234#define XXCOM BIT(5) /* `...` command */ 1235#define XPCLOSE BIT(6) /* exchild: close close_fd in parent */ 1236#define XCCLOSE BIT(7) /* exchild: close close_fd in child */ 1237#define XERROK BIT(8) /* non-zero exit ok (for set -e) */ 1238#define XCOPROC BIT(9) /* starting a co-process */ 1239#define XTIME BIT(10) /* timing TCOM command */ 1240#define XPIPEST BIT(11) /* want PIPESTATUS */ 1241 1242/* 1243 * flags to control expansion of words (assumed by t->evalflags to fit 1244 * in a short) 1245 */ 1246#define DOBLANK BIT(0) /* perform blank interpretation */ 1247#define DOGLOB BIT(1) /* expand [?* */ 1248#define DOPAT BIT(2) /* quote *?[ */ 1249#define DOTILDE BIT(3) /* normal ~ expansion (first char) */ 1250#define DONTRUNCOMMAND BIT(4) /* do not run $(command) things */ 1251#define DOASNTILDE BIT(5) /* assignment ~ expansion (after =, :) */ 1252#define DOBRACE BIT(6) /* used by expand(): do brace expansion */ 1253#define DOMAGIC BIT(7) /* used by expand(): string contains MAGIC */ 1254#define DOTEMP BIT(8) /* dito: in word part of ${..[%#=?]..} */ 1255#define DOVACHECK BIT(9) /* var assign check (for typeset, set, etc) */ 1256#define DOMARKDIRS BIT(10) /* force markdirs behaviour */ 1257 1258/* 1259 * The arguments of [[ .. ]] expressions are kept in t->args[] and flags 1260 * indicating how the arguments have been munged are kept in t->vars[]. 1261 * The contents of t->vars[] are stuffed strings (so they can be treated 1262 * like all other t->vars[]) in which the second character is the one that 1263 * is examined. The DB_* defines are the values for these second characters. 1264 */ 1265#define DB_NORM 1 /* normal argument */ 1266#define DB_OR 2 /* || -> -o conversion */ 1267#define DB_AND 3 /* && -> -a conversion */ 1268#define DB_BE 4 /* an inserted -BE */ 1269#define DB_PAT 5 /* a pattern argument */ 1270 1271#define X_EXTRA 20 /* this many extra bytes in X string */ 1272 1273typedef struct XString { 1274 char *end, *beg; /* end, begin of string */ 1275 size_t len; /* length */ 1276 Area *areap; /* area to allocate/free from */ 1277} XString; 1278 1279typedef char *XStringP; 1280 1281/* initialise expandable string */ 1282#define XinitN(xs, length, area) do { \ 1283 (xs).len = (length); \ 1284 (xs).areap = (area); \ 1285 (xs).beg = alloc((xs).len + X_EXTRA, (xs).areap); \ 1286 (xs).end = (xs).beg + (xs).len; \ 1287} while (/* CONSTCOND */ 0) 1288#define Xinit(xs, xp, length, area) do { \ 1289 XinitN((xs), (length), (area)); \ 1290 (xp) = (xs).beg; \ 1291} while (/* CONSTCOND */ 0) 1292 1293/* stuff char into string */ 1294#define Xput(xs, xp, c) (*xp++ = (c)) 1295 1296/* check if there are at least n bytes left */ 1297#define XcheckN(xs, xp, n) do { \ 1298 ssize_t more = ((xp) + (n)) - (xs).end; \ 1299 if (more > 0) \ 1300 (xp) = Xcheck_grow_(&(xs), (xp), more); \ 1301} while (/* CONSTCOND */ 0) 1302 1303/* check for overflow, expand string */ 1304#define Xcheck(xs, xp) XcheckN((xs), (xp), 1) 1305 1306/* free string */ 1307#define Xfree(xs, xp) afree((xs).beg, (xs).areap) 1308 1309/* close, return string */ 1310#define Xclose(xs, xp) aresize((xs).beg, (xp) - (xs).beg, (xs).areap) 1311 1312/* begin of string */ 1313#define Xstring(xs, xp) ((xs).beg) 1314 1315#define Xnleft(xs, xp) ((xs).end - (xp)) /* may be less than 0 */ 1316#define Xlength(xs, xp) ((xp) - (xs).beg) 1317#define Xsize(xs, xp) ((xs).end - (xs).beg) 1318#define Xsavepos(xs, xp) ((xp) - (xs).beg) 1319#define Xrestpos(xs, xp, n) ((xs).beg + (n)) 1320 1321char *Xcheck_grow_(XString *, const char *, size_t); 1322 1323/* 1324 * expandable vector of generic pointers 1325 */ 1326 1327typedef struct XPtrV { 1328 void **cur; /* next avail pointer */ 1329 void **beg, **end; /* begin, end of vector */ 1330} XPtrV; 1331 1332#define XPinit(x, n) do { \ 1333 void **XPinit_vp; \ 1334 XPinit_vp = alloc2((n), sizeof(void *), ATEMP); \ 1335 (x).cur = (x).beg = XPinit_vp; \ 1336 (x).end = XPinit_vp + (n); \ 1337} while (/* CONSTCOND */ 0) 1338 1339#define XPput(x, p) do { \ 1340 if ((x).cur >= (x).end) { \ 1341 size_t n = XPsize(x); \ 1342 (x).beg = aresize2((x).beg, \ 1343 n, 2 * sizeof(void *), ATEMP); \ 1344 (x).cur = (x).beg + n; \ 1345 (x).end = (x).cur + n; \ 1346 } \ 1347 *(x).cur++ = (p); \ 1348} while (/* CONSTCOND */ 0) 1349 1350#define XPptrv(x) ((x).beg) 1351#define XPsize(x) ((x).cur - (x).beg) 1352#define XPclose(x) aresize2((x).beg, XPsize(x), sizeof(void *), ATEMP) 1353#define XPfree(x) afree((x).beg, ATEMP) 1354 1355#define IDENT 64 1356 1357typedef struct source Source; 1358struct source { 1359 const char *str; /* input pointer */ 1360 const char *start; /* start of current buffer */ 1361 union { 1362 const char **strv; /* string [] */ 1363 struct shf *shf; /* shell file */ 1364 struct tbl *tblp; /* alias (SF_HASALIAS) */ 1365 char *freeme; /* also for SREREAD */ 1366 } u; 1367 const char *file; /* input file name */ 1368 int type; /* input type */ 1369 int line; /* line number */ 1370 int errline; /* line the error occurred on (0 if not set) */ 1371 int flags; /* SF_* */ 1372 Area *areap; 1373 Source *next; /* stacked source */ 1374 XString xs; /* input buffer */ 1375 char ugbuf[2]; /* buffer for ungetsc() (SREREAD) and 1376 * alias (SALIAS) */ 1377}; 1378 1379/* Source.type values */ 1380#define SEOF 0 /* input EOF */ 1381#define SFILE 1 /* file input */ 1382#define SSTDIN 2 /* read stdin */ 1383#define SSTRING 3 /* string */ 1384#define SWSTR 4 /* string without \n */ 1385#define SWORDS 5 /* string[] */ 1386#define SWORDSEP 6 /* string[] separator */ 1387#define SALIAS 7 /* alias expansion */ 1388#define SREREAD 8 /* read ahead to be re-scanned */ 1389 1390/* Source.flags values */ 1391#define SF_ECHO BIT(0) /* echo input to shlout */ 1392#define SF_ALIAS BIT(1) /* faking space at end of alias */ 1393#define SF_ALIASEND BIT(2) /* faking space at end of alias */ 1394#define SF_TTY BIT(3) /* type == SSTDIN & it is a tty */ 1395#define SF_HASALIAS BIT(4) /* u.tblp valid (SALIAS, SEOF) */ 1396 1397typedef union { 1398 int i; 1399 char *cp; 1400 char **wp; 1401 struct op *o; 1402 struct ioword *iop; 1403} YYSTYPE; 1404 1405/* If something is added here, add it to tokentab[] in syn.c as well */ 1406#define LWORD 256 1407#define LOGAND 257 /* && */ 1408#define LOGOR 258 /* || */ 1409#define BREAK 259 /* ;; */ 1410#define IF 260 1411#define THEN 261 1412#define ELSE 262 1413#define ELIF 263 1414#define FI 264 1415#define CASE 265 1416#define ESAC 266 1417#define FOR 267 1418#define SELECT 268 1419#define WHILE 269 1420#define UNTIL 270 1421#define DO 271 1422#define DONE 272 1423#define IN 273 1424#define FUNCTION 274 1425#define TIME 275 1426#define REDIR 276 1427#define MDPAREN 277 /* (( )) */ 1428#define BANG 278 /* ! */ 1429#define DBRACKET 279 /* [[ .. ]] */ 1430#define COPROC 280 /* |& */ 1431#define BRKEV 281 /* ;| */ 1432#define BRKFT 282 /* ;& */ 1433#define YYERRCODE 300 1434 1435/* flags to yylex */ 1436#define CONTIN BIT(0) /* skip new lines to complete command */ 1437#define ONEWORD BIT(1) /* single word for substitute() */ 1438#define ALIAS BIT(2) /* recognise alias */ 1439#define KEYWORD BIT(3) /* recognise keywords */ 1440#define LETEXPR BIT(4) /* get expression inside (( )) */ 1441#define VARASN BIT(5) /* check for var=word */ 1442#define ARRAYVAR BIT(6) /* parse x[1 & 2] as one word */ 1443#define ESACONLY BIT(7) /* only accept esac keyword */ 1444#define CMDWORD BIT(8) /* parsing simple command (alias related) */ 1445#define HEREDELIM BIT(9) /* parsing <<,<<- delimiter */ 1446#define LQCHAR BIT(10) /* source string contains QCHAR */ 1447#define HEREDOC BIT(11) /* parsing a here document */ 1448 1449#define HERES 10 /* max number of << in line */ 1450 1451#undef CTRL 1452#define CTRL(x) ((x) == '?' ? 0x7F : (x) & 0x1F) /* ASCII */ 1453#define UNCTRL(x) ((x) ^ 0x40) /* ASCII */ 1454 1455EXTERN Source *source; /* yyparse/yylex source */ 1456EXTERN YYSTYPE yylval; /* result from yylex */ 1457EXTERN struct ioword *heres[HERES], **herep; 1458EXTERN char ident[IDENT+1]; 1459 1460#define HISTORYSIZE 500 /* size of saved history */ 1461 1462EXTERN char **history; /* saved commands */ 1463EXTERN char **histptr; /* last history item */ 1464EXTERN int histsize; /* history size */ 1465 1466/* user and system time of last j_waitjed job */ 1467EXTERN struct timeval j_usrtime, j_systime; 1468 1469#define notoktomul(fac1, fac2) (((fac1) != 0) && ((fac2) != 0) && \ 1470 ((SIZE_MAX / (fac1)) < (fac2))) 1471#define notoktoadd(val, cnst) ((val) > (SIZE_MAX - (cnst))) 1472#define checkoktoadd(val, cnst) do { \ 1473 if (notoktoadd((val), (cnst))) \ 1474 internal_errorf(Tintovfl, (size_t)(val), \ 1475 '+', (size_t)(cnst)); \ 1476} while (/* CONSTCOND */ 0) 1477 1478 1479/* NZAT/NZAAT hashes based on Bob Jenkins' one-at-a-time hash */ 1480 1481/* From: src/kern/include/nzat.h,v 1.2 2011/07/18 00:35:40 tg Exp $ */ 1482 1483#define NZATInit(h) do { \ 1484 (h) = 0; \ 1485} while (/* CONSTCOND */ 0) 1486 1487#define NZATUpdateByte(h,b) do { \ 1488 (h) += (uint8_t)(b); \ 1489 ++(h); \ 1490 (h) += (h) << 10; \ 1491 (h) ^= (h) >> 6; \ 1492} while (/* CONSTCOND */ 0) 1493 1494#define NZATUpdateMem(h,p,z) do { \ 1495 register const uint8_t *NZATUpdateMem_p; \ 1496 register size_t NZATUpdateMem_z = (z); \ 1497 \ 1498 NZATUpdateMem_p = (const void *)(p); \ 1499 while (NZATUpdateMem_z--) \ 1500 NZATUpdateByte((h), *NZATUpdateMem_p++); \ 1501} while (/* CONSTCOND */ 0) 1502 1503#define NZATUpdateString(h,s) do { \ 1504 register const char *NZATUpdateString_s; \ 1505 register uint8_t NZATUpdateString_c; \ 1506 \ 1507 NZATUpdateString_s = (const void *)(s); \ 1508 while ((NZATUpdateString_c = *NZATUpdateString_s++)) \ 1509 NZATUpdateByte((h), NZATUpdateString_c); \ 1510} while (/* CONSTCOND */ 0) 1511 1512/* not zero after termination */ 1513#define NZATFinish(h) do { \ 1514 if ((h) == 0) \ 1515 ++(h); \ 1516 else \ 1517 NZAATFinish(h); \ 1518} while (/* CONSTCOND */ 0) 1519 1520/* NULs zählen an allen Teilen */ 1521#define NZAATFinish(h) do { \ 1522 (h) += (h) << 10; \ 1523 (h) ^= (h) >> 6; \ 1524 (h) += (h) << 3; \ 1525 (h) ^= (h) >> 11; \ 1526 (h) += (h) << 15; \ 1527} while (/* CONSTCOND */ 0) 1528 1529 1530/* lalloc.c */ 1531void ainit(Area *); 1532void afreeall(Area *); 1533/* these cannot fail and can take NULL (not for ap) */ 1534#define alloc(n, ap) aresize(NULL, (n), (ap)) 1535#define alloc2(m, n, ap) aresize2(NULL, (m), (n), (ap)) 1536void *aresize(void *, size_t, Area *); 1537void *aresize2(void *, size_t, size_t, Area *); 1538void afree(void *, Area *); /* can take NULL */ 1539/* edit.c */ 1540#ifndef MKSH_SMALL 1541int x_bind(const char *, const char *, bool, bool); 1542#else 1543int x_bind(const char *, const char *, bool); 1544#endif 1545void x_init(void); 1546void x_mkraw(int, struct termios *, bool); 1547int x_read(char *, size_t); 1548/* eval.c */ 1549char *substitute(const char *, int); 1550char **eval(const char **, int); 1551char *evalstr(const char *cp, int); 1552char *evalonestr(const char *cp, int); 1553char *debunk(char *, const char *, size_t); 1554void expand(const char *, XPtrV *, int); 1555int glob_str(char *, XPtrV *, int); 1556/* exec.c */ 1557int execute(struct op * volatile, volatile int, volatile int * volatile); 1558int shcomexec(const char **); 1559struct tbl *findfunc(const char *, uint32_t, bool); 1560int define(const char *, struct op *); 1561const char *builtin(const char *, int (*)(const char **)); 1562struct tbl *findcom(const char *, int); 1563void flushcom(bool); 1564const char *search_path(const char *, const char *, int, int *); 1565int pr_menu(const char * const *); 1566int pr_list(char * const *); 1567/* expr.c */ 1568int evaluate(const char *, mksh_ari_t *, int, bool); 1569int v_evaluate(struct tbl *, const char *, volatile int, bool); 1570/* UTF-8 stuff */ 1571size_t utf_mbtowc(unsigned int *, const char *); 1572size_t utf_wctomb(char *, unsigned int); 1573int utf_widthadj(const char *, const char **); 1574size_t utf_mbswidth(const char *); 1575const char *utf_skipcols(const char *, int); 1576size_t utf_ptradj(const char *); 1577#ifndef MKSH_mirbsd_wcwidth 1578int utf_wcwidth(unsigned int); 1579#endif 1580int ksh_access(const char *, int); 1581/* funcs.c */ 1582int c_hash(const char **); 1583int c_pwd(const char **); 1584int c_print(const char **); 1585#ifdef MKSH_PRINTF_BUILTIN 1586int c_printf(const char **); 1587#endif 1588int c_whence(const char **); 1589int c_command(const char **); 1590int c_typeset(const char **); 1591int c_alias(const char **); 1592int c_unalias(const char **); 1593int c_let(const char **); 1594int c_jobs(const char **); 1595#ifndef MKSH_UNEMPLOYED 1596int c_fgbg(const char **); 1597#endif 1598int c_kill(const char **); 1599void getopts_reset(int); 1600int c_getopts(const char **); 1601int c_bind(const char **); 1602int c_shift(const char **); 1603int c_umask(const char **); 1604int c_dot(const char **); 1605int c_wait(const char **); 1606int c_read(const char **); 1607int c_eval(const char **); 1608int c_trap(const char **); 1609int c_brkcont(const char **); 1610int c_exitreturn(const char **); 1611int c_set(const char **); 1612int c_unset(const char **); 1613int c_ulimit(const char **); 1614int c_times(const char **); 1615int timex(struct op *, int, volatile int *); 1616void timex_hook(struct op *, char ** volatile *); 1617int c_exec(const char **); 1618/* dummy function (just need pointer value), special case in comexec() */ 1619#define c_builtin shcomexec 1620int c_test(const char **); 1621#if HAVE_MKNOD 1622int c_mknod(const char **); 1623#endif 1624int c_realpath(const char **); 1625int c_rename(const char **); 1626int c_cat(const char **); 1627int c_sleep(const char **); 1628/* histrap.c */ 1629void init_histvec(void); 1630void hist_init(Source *); 1631#if HAVE_PERSISTENT_HISTORY 1632void hist_finish(void); 1633#endif 1634void histsave(int *, const char *, bool, bool); 1635#if !defined(MKSH_SMALL) && HAVE_PERSISTENT_HISTORY 1636bool histsync(void); 1637#endif 1638int c_fc(const char **); 1639void sethistsize(int); 1640#if HAVE_PERSISTENT_HISTORY 1641void sethistfile(const char *); 1642#endif 1643char **histpos(void); 1644int histnum(int); 1645int findhist(int, int, const char *, int); 1646char **hist_get_newest(bool); 1647void inittraps(void); 1648void alarm_init(void); 1649Trap *gettrap(const char *, int); 1650void trapsig(int); 1651void intrcheck(void); 1652int fatal_trap_check(void); 1653int trap_pending(void); 1654void runtraps(int intr); 1655void runtrap(Trap *, bool); 1656void cleartraps(void); 1657void restoresigs(void); 1658void settrap(Trap *, const char *); 1659int block_pipe(void); 1660void restore_pipe(int); 1661int setsig(Trap *, sig_t, int); 1662void setexecsig(Trap *, int); 1663/* jobs.c */ 1664void j_init(void); 1665void j_exit(void); 1666#ifndef MKSH_UNEMPLOYED 1667void j_change(void); 1668#endif 1669int exchild(struct op *, int, volatile int *, int); 1670void startlast(void); 1671int waitlast(void); 1672int waitfor(const char *, int *); 1673int j_kill(const char *, int); 1674#ifndef MKSH_UNEMPLOYED 1675int j_resume(const char *, int); 1676#endif 1677int j_jobs(const char *, int, int); 1678void j_notify(void); 1679pid_t j_async(void); 1680int j_stopped_running(void); 1681/* lex.c */ 1682int yylex(int); 1683void yyerror(const char *, ...) 1684 MKSH_A_NORETURN 1685 MKSH_A_FORMAT(__printf__, 1, 2); 1686Source *pushs(int, Area *); 1687void set_prompt(int, Source *); 1688void pprompt(const char *, int); 1689int promptlen(const char *); 1690/* main.c */ 1691int include(const char *, int, const char **, int); 1692int command(const char *, int); 1693int shell(Source *volatile, int volatile); 1694void unwind(int) MKSH_A_NORETURN; 1695void newenv(int); 1696void quitenv(struct shf *); 1697void cleanup_parents_env(void); 1698void cleanup_proc_env(void); 1699void errorf(const char *, ...) 1700 MKSH_A_NORETURN 1701 MKSH_A_FORMAT(__printf__, 1, 2); 1702void errorfx(int, const char *, ...) 1703 MKSH_A_NORETURN 1704 MKSH_A_FORMAT(__printf__, 2, 3); 1705void warningf(bool, const char *, ...) 1706 MKSH_A_FORMAT(__printf__, 2, 3); 1707void bi_errorf(const char *, ...) 1708 MKSH_A_FORMAT(__printf__, 1, 2); 1709#define errorfz() errorf("\1") 1710#define errorfxz(rc) errorfx((rc), "\1") 1711#define bi_errorfz() bi_errorf("\1") 1712void internal_errorf(const char *, ...) 1713 MKSH_A_NORETURN 1714 MKSH_A_FORMAT(__printf__, 1, 2); 1715void internal_warningf(const char *, ...) 1716 MKSH_A_FORMAT(__printf__, 1, 2); 1717void error_prefix(bool); 1718void shellf(const char *, ...) 1719 MKSH_A_FORMAT(__printf__, 1, 2); 1720void shprintf(const char *, ...) 1721 MKSH_A_FORMAT(__printf__, 1, 2); 1722int can_seek(int); 1723void initio(void); 1724int ksh_dup2(int, int, bool); 1725short savefd(int); 1726void restfd(int, int); 1727void openpipe(int *); 1728void closepipe(int *); 1729int check_fd(const char *, int, const char **); 1730void coproc_init(void); 1731void coproc_read_close(int); 1732void coproc_readw_close(int); 1733void coproc_write_close(int); 1734int coproc_getfd(int, const char **); 1735void coproc_cleanup(int); 1736struct temp *maketemp(Area *, Temp_type, struct temp **); 1737void ktinit(Area *, struct table *, uint8_t); 1738struct tbl *ktscan(struct table *, const char *, uint32_t, struct tbl ***); 1739/* table, name (key) to search for, hash(n) */ 1740#define ktsearch(tp, s, h) ktscan((tp), (s), (h), NULL) 1741struct tbl *ktenter(struct table *, const char *, uint32_t); 1742#define ktdelete(p) do { p->flag = 0; } while (/* CONSTCOND */ 0) 1743void ktwalk(struct tstate *, struct table *); 1744struct tbl *ktnext(struct tstate *); 1745struct tbl **ktsort(struct table *); 1746/* misc.c */ 1747void setctypes(const char *, int); 1748void initctypes(void); 1749size_t option(const char *); 1750char *getoptions(void); 1751void change_flag(enum sh_flag, int, unsigned int); 1752int parse_args(const char **, int, bool *); 1753int getn(const char *, int *); 1754int bi_getn(const char *, int *); 1755int gmatchx(const char *, const char *, bool); 1756int has_globbing(const char *, const char *); 1757int xstrcmp(const void *, const void *); 1758void ksh_getopt_reset(Getopt *, int); 1759int ksh_getopt(const char **, Getopt *, const char *); 1760void print_value_quoted(const char *); 1761char *quote_value(const char *); 1762void print_columns(struct shf *, int, 1763 char *(*)(char *, size_t, int, const void *), 1764 const void *, size_t, size_t, bool); 1765void strip_nuls(char *, int); 1766ssize_t blocking_read(int, char *, size_t) 1767 MKSH_A_BOUNDED(__buffer__, 2, 3); 1768int reset_nonblock(int); 1769char *ksh_get_wd(void); 1770char *do_realpath(const char *); 1771void simplify_path(char *); 1772void set_current_wd(const char *); 1773int c_cd(const char **); 1774#ifdef MKSH_SMALL 1775char *strdup_(const char *, Area *); 1776char *strndup_(const char *, size_t, Area *); 1777#endif 1778int unbksl(bool, int (*)(void), void (*)(int)); 1779/* shf.c */ 1780struct shf *shf_open(const char *, int, int, int); 1781struct shf *shf_fdopen(int, int, struct shf *); 1782struct shf *shf_reopen(int, int, struct shf *); 1783struct shf *shf_sopen(char *, ssize_t, int, struct shf *); 1784int shf_close(struct shf *); 1785int shf_fdclose(struct shf *); 1786char *shf_sclose(struct shf *); 1787int shf_flush(struct shf *); 1788ssize_t shf_read(char *, ssize_t, struct shf *); 1789char *shf_getse(char *, ssize_t, struct shf *); 1790int shf_getchar(struct shf *s); 1791int shf_ungetc(int, struct shf *); 1792#ifdef MKSH_SMALL 1793int shf_getc(struct shf *); 1794int shf_putc(int, struct shf *); 1795#else 1796#define shf_getc shf_getc_ 1797#define shf_putc shf_putc_ 1798#endif 1799int shf_putchar(int, struct shf *); 1800ssize_t shf_puts(const char *, struct shf *); 1801ssize_t shf_write(const char *, ssize_t, struct shf *); 1802ssize_t shf_fprintf(struct shf *, const char *, ...) 1803 MKSH_A_FORMAT(__printf__, 2, 3); 1804ssize_t shf_snprintf(char *, ssize_t, const char *, ...) 1805 MKSH_A_FORMAT(__printf__, 3, 4) 1806 MKSH_A_BOUNDED(__string__, 1, 2); 1807char *shf_smprintf(const char *, ...) 1808 MKSH_A_FORMAT(__printf__, 1, 2); 1809ssize_t shf_vfprintf(struct shf *, const char *, va_list) 1810 MKSH_A_FORMAT(__printf__, 2, 0); 1811/* syn.c */ 1812void initkeywords(void); 1813struct op *compile(Source *, bool); 1814bool parse_usec(const char *, struct timeval *); 1815char *yyrecursive(void); 1816/* tree.c */ 1817void fptreef(struct shf *, int, const char *, ...); 1818char *snptreef(char *, ssize_t, const char *, ...); 1819struct op *tcopy(struct op *, Area *); 1820char *wdcopy(const char *, Area *); 1821const char *wdscan(const char *, int); 1822#define WDS_TPUTS BIT(0) /* tputS (dumpwdvar) mode */ 1823#define WDS_KEEPQ BIT(1) /* keep quote characters */ 1824#define WDS_MAGIC BIT(2) /* make MAGIC */ 1825char *wdstrip(const char *, int); 1826void tfree(struct op *, Area *); 1827void dumpchar(struct shf *, int); 1828void dumptree(struct shf *, struct op *); 1829void dumpwdvar(struct shf *, const char *); 1830void vistree(char *, size_t, struct op *) 1831 MKSH_A_BOUNDED(__string__, 1, 2); 1832void fpFUNCTf(struct shf *, int, bool, const char *, struct op *); 1833/* var.c */ 1834void newblock(void); 1835void popblock(void); 1836void initvar(void); 1837struct tbl *global(const char *); 1838struct tbl *local(const char *, bool); 1839char *str_val(struct tbl *); 1840int setstr(struct tbl *, const char *, int); 1841struct tbl *setint_v(struct tbl *, struct tbl *, bool); 1842void setint(struct tbl *, mksh_ari_t); 1843void setint_n(struct tbl *, mksh_ari_t); 1844struct tbl *typeset(const char *, uint32_t, uint32_t, int, int) 1845 MKSH_A_NONNULL((__nonnull__ (1))); 1846void unset(struct tbl *, int); 1847const char *skip_varname(const char *, int); 1848const char *skip_wdvarname(const char *, bool); 1849int is_wdvarname(const char *, bool); 1850int is_wdvarassign(const char *); 1851struct tbl *arraysearch(struct tbl *, uint32_t); 1852char **makenv(void); 1853void change_winsz(void); 1854size_t array_ref_len(const char *); 1855char *arrayname(const char *); 1856mksh_uari_t set_array(const char *, bool, const char **); 1857uint32_t hash(const void *); 1858void rndset(long); 1859 1860enum Test_op { 1861 /* non-operator */ 1862 TO_NONOP = 0, 1863 /* unary operators */ 1864 TO_STNZE, TO_STZER, TO_OPTION, 1865 TO_FILAXST, 1866 TO_FILEXST, 1867 TO_FILREG, TO_FILBDEV, TO_FILCDEV, TO_FILSYM, TO_FILFIFO, TO_FILSOCK, 1868 TO_FILCDF, TO_FILID, TO_FILGID, TO_FILSETG, TO_FILSTCK, TO_FILUID, 1869 TO_FILRD, TO_FILGZ, TO_FILTT, TO_FILSETU, TO_FILWR, TO_FILEX, 1870 /* binary operators */ 1871 TO_STEQL, TO_STNEQ, TO_STLT, TO_STGT, TO_INTEQ, TO_INTNE, TO_INTGT, 1872 TO_INTGE, TO_INTLT, TO_INTLE, TO_FILEQ, TO_FILNT, TO_FILOT, 1873 /* not an operator */ 1874 TO_NONNULL /* !TO_NONOP */ 1875}; 1876typedef enum Test_op Test_op; 1877 1878/* Used by Test_env.isa() (order important - used to index *_tokens[] arrays) */ 1879enum Test_meta { 1880 TM_OR, /* -o or || */ 1881 TM_AND, /* -a or && */ 1882 TM_NOT, /* ! */ 1883 TM_OPAREN, /* ( */ 1884 TM_CPAREN, /* ) */ 1885 TM_UNOP, /* unary operator */ 1886 TM_BINOP, /* binary operator */ 1887 TM_END /* end of input */ 1888}; 1889typedef enum Test_meta Test_meta; 1890 1891#define TEF_ERROR BIT(0) /* set if we've hit an error */ 1892#define TEF_DBRACKET BIT(1) /* set if [[ .. ]] test */ 1893 1894typedef struct test_env { 1895 union { 1896 const char **wp; /* used by ptest_* */ 1897 XPtrV *av; /* used by dbtestp_* */ 1898 } pos; 1899 const char **wp_end; /* used by ptest_* */ 1900 Test_op (*isa)(struct test_env *, Test_meta); 1901 const char *(*getopnd) (struct test_env *, Test_op, bool); 1902 int (*eval)(struct test_env *, Test_op, const char *, const char *, bool); 1903 void (*error)(struct test_env *, int, const char *); 1904 int flags; /* TEF_* */ 1905} Test_env; 1906 1907extern const char *const dbtest_tokens[]; 1908 1909Test_op test_isop(Test_meta, const char *); 1910int test_eval(Test_env *, Test_op, const char *, const char *, bool); 1911int test_parse(Test_env *); 1912 1913EXTERN int tty_fd E_INIT(-1); /* dup'd tty file descriptor */ 1914EXTERN bool tty_devtty; /* true if tty_fd is from /dev/tty */ 1915EXTERN struct termios tty_state; /* saved tty state */ 1916 1917extern void tty_init(bool, bool); 1918extern void tty_close(void); 1919 1920/* be sure not to interfere with anyone else's idea about EXTERN */ 1921#ifdef EXTERN_DEFINED 1922# undef EXTERN_DEFINED 1923# undef EXTERN 1924#endif 1925#undef E_INIT 1926 1927#endif /* !MKSH_INCLUDES_ONLY */ 1928