1 /* $OpenBSD: sh.h,v 1.33 2013/12/18 13:53:12 millert 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 1.6 2005/03/30 17:16:37 deraadt 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 $ */
12 * Copyright © 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010,
13 * 2011, 2012, 2013, 2014
14 * Thorsten Glaser <tg@mirbsd.org>
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.
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 person’s immediate fault when using the work as intended.
34 #define _BSD_SOURCE /* live, BSD, live❣ */
38 #include <sys/param.h>
40 #include <sys/types.h>
49 #include <sys/ioctl.h>
50 #if HAVE_SYS_SYSMACROS_H
51 #include <sys/sysmacros.h>
54 #include <sys/mkdev.h>
59 #if HAVE_SYS_RESOURCE_H
60 #include <sys/resource.h>
99 #include <sys/sioctl.h>
110 #if HAVE_ATTRIBUTE_BOUNDED
111 #define MKSH_A_BOUNDED(x,y,z) __attribute__((__bounded__(x, y, z)))
113 #define MKSH_A_BOUNDED(x,y,z) /* nothing */
115 #if HAVE_ATTRIBUTE_FORMAT
116 #define MKSH_A_FORMAT(x,y,z) __attribute__((__format__(x, y, z)))
118 #define MKSH_A_FORMAT(x,y,z) /* nothing */
120 #if HAVE_ATTRIBUTE_NORETURN
121 #define MKSH_A_NORETURN __attribute__((__noreturn__))
123 #define MKSH_A_NORETURN /* nothing */
125 #if HAVE_ATTRIBUTE_PURE
126 #define MKSH_A_PURE __attribute__((__pure__))
128 #define MKSH_A_PURE /* nothing */
130 #if HAVE_ATTRIBUTE_UNUSED
131 #define MKSH_A_UNUSED __attribute__((__unused__))
133 #define MKSH_A_UNUSED /* nothing */
135 #if HAVE_ATTRIBUTE_USED
136 #define MKSH_A_USED __attribute__((__used__))
138 #define MKSH_A_USED /* nothing */
141 #if defined(MirBSD) && (MirBSD >= 0x09A1) && \
142 defined(__ELF__) && defined(__GNUC__) && \
143 !defined(__llvm__) && !defined(__NWCC__)
145 * We got usable __IDSTRING __COPYRIGHT __RCSID __SCCSID macros
146 * which work for all cases; no need to redefine them using the
147 * "portable" macros from below when we might have the "better"
148 * gcc+ELF specific macros or other system dependent ones.
152 #undef __IDSTRING_CONCAT
153 #undef __IDSTRING_EXPAND
157 #define __IDSTRING_CONCAT(l,p) __LINTED__ ## l ## _ ## p
158 #define __IDSTRING_EXPAND(l,p) __IDSTRING_CONCAT(l,p)
159 #ifdef MKSH_DONT_EMIT_IDSTRING
160 #define __IDSTRING(prefix, string) /* nothing */
162 #define __IDSTRING(prefix, string) \
163 static const char __IDSTRING_EXPAND(__LINE__,prefix) [] \
164 MKSH_A_USED = "@(""#)" #prefix ": " string
166 #define __COPYRIGHT(x) __IDSTRING(copyright,x)
167 #define __RCSID(x) __IDSTRING(rcsid,x)
168 #define __SCCSID(x) __IDSTRING(sccsid,x)
172 __RCSID("$MirOS: src/bin/mksh/sh.h,v 1.691 2014/06/29 11:28:28 tg Exp $");
174 #define MKSH_VERSION "R50 2014/06/29"
176 /* arithmetic types: C implementation */
177 #if !HAVE_CAN_INTTYPES
178 #if !HAVE_CAN_UCBINTS
179 typedef signed int int32_t;
180 typedef unsigned int uint32_t;
182 typedef u_int32_t uint32_t;
186 /* arithmetic types: shell arithmetics */
187 #ifdef MKSH_LEGACY_MODE
189 * POSIX demands these to be the C environment's long type
191 typedef long mksh_ari_t;
192 typedef unsigned long mksh_uari_t;
195 * These types are exactly 32 bit wide; signed and unsigned
196 * integer wraparound, even across division and modulo, for
197 * any shell code using them, is guaranteed.
199 typedef int32_t mksh_ari_t;
200 typedef uint32_t mksh_uari_t;
203 /* boolean type (no <stdbool.h> deliberately) */
204 typedef unsigned char mksh_bool;
206 /* false MUST equal the same 0 as written by static storage initialisation */
209 /* access macros for boolean type */
210 #define bool mksh_bool
211 /* values must have identity mapping between mksh_bool and short */
214 /* make any-type into bool or short */
215 #define tobool(cond) ((cond) ? true : false)
217 /* char (octet) type: C implementation */
218 #if !HAVE_CAN_INT8TYPE
219 #if !HAVE_CAN_UCBINT8
220 typedef unsigned char uint8_t;
222 typedef u_int8_t uint8_t;
226 /* other standard types */
229 typedef unsigned long rlim_t;
234 typedef void (*sig_t)(int);
237 #ifdef MKSH_TYPEDEF_SIG_ATOMIC_T
238 typedef MKSH_TYPEDEF_SIG_ATOMIC_T sig_atomic_t;
241 #ifdef MKSH_TYPEDEF_SSIZE_T
242 typedef MKSH_TYPEDEF_SSIZE_T ssize_t;
245 /* un-do vendor damage */
247 #undef BAD /* AIX defines that somewhere */
248 #undef PRINT /* LynxOS defines that somewhere */
249 #undef flock /* SCO UnixWare defines that to flock64 but ENOENT */
252 #ifndef MKSH_INCLUDES_ONLY
259 #undef RUSAGE_CHILDREN
260 #define rusage mksh_rusage
261 #define RUSAGE_SELF 0
262 #define RUSAGE_CHILDREN -1
265 struct timeval ru_utime;
266 struct timeval ru_stime;
273 #define timerclear(tvp) \
275 (tvp)->tv_sec = (tvp)->tv_usec = 0; \
276 } while (/* CONSTCOND */ 0)
279 #define timeradd(tvp, uvp, vvp) \
281 (vvp)->tv_sec = (tvp)->tv_sec + (uvp)->tv_sec; \
282 (vvp)->tv_usec = (tvp)->tv_usec + (uvp)->tv_usec; \
283 if ((vvp)->tv_usec >= 1000000) { \
285 (vvp)->tv_usec -= 1000000; \
287 } while (/* CONSTCOND */ 0)
290 #define timersub(tvp, uvp, vvp) \
292 (vvp)->tv_sec = (tvp)->tv_sec - (uvp)->tv_sec; \
293 (vvp)->tv_usec = (tvp)->tv_usec - (uvp)->tv_usec; \
294 if ((vvp)->tv_usec < 0) { \
296 (vvp)->tv_usec += 1000000; \
298 } while (/* CONSTCOND */ 0)
301 #define ksh_isdigit(c) (((c) >= '0') && ((c) <= '9'))
302 #define ksh_islower(c) (((c) >= 'a') && ((c) <= 'z'))
303 #define ksh_isupper(c) (((c) >= 'A') && ((c) <= 'Z'))
304 #define ksh_tolower(c) (((c) >= 'A') && ((c) <= 'Z') ? (c) - 'A' + 'a' : (c))
305 #define ksh_toupper(c) (((c) >= 'a') && ((c) <= 'z') ? (c) - 'a' + 'A' : (c))
306 #define ksh_isdash(s) (((s)[0] == '-') && ((s)[1] == '\0'))
307 #define ksh_isspace(c) ((((c) >= 0x09) && ((c) <= 0x0D)) || ((c) == 0x20))
308 #define ksh_min(x,y) ((x) < (y) ? (x) : (y))
309 #define ksh_max(x,y) ((x) > (y) ? (x) : (y))
311 #ifdef MKSH__NO_PATH_MAX
315 #define PATH_MAX 1024
320 #define SIZE_MAX SIZE_T_MAX
322 #define SIZE_MAX ((size_t)-1)
326 #define S_ISLNK(m) ((m & 0170000) == 0120000)
329 #define S_ISSOCK(m) ((m & 0170000) == 0140000)
331 #if !defined(S_ISCDF) && defined(S_CDF)
332 #define S_ISCDF(m) (S_ISDIR(m) && ((m) & S_CDF))
335 #define DEFFILEMODE (S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP|S_IROTH|S_IWOTH)
341 #elif defined(SIGMAX)
342 #define NSIG (SIGMAX+1)
343 #elif defined(_SIGMAX)
344 #define NSIG (_SIGMAX+1)
346 # error Please have your platform define NSIG.
351 /* get rid of this (and awk/printf(1) in Build.sh) later */
353 # error Your NSIG value is not positive.
359 /* OS-dependent additions (functions, variables, by OS) */
362 extern int flock(int, int);
365 #if !HAVE_GETTIMEOFDAY
366 #define mksh_TIME(tv) do { \
368 (tv).tv_sec = time(NULL); \
369 } while (/* CONSTCOND */ 0)
371 #define mksh_TIME(tv) gettimeofday(&(tv), NULL)
375 extern int getrusage(int, struct rusage *);
379 /* we assume either memmove or bcopy exist, at the moment */
380 #define memmove(dst, src, len) bcopy((src), (dst), (len))
383 #if !HAVE_REVOKE_DECL
384 extern int revoke(const char *);
387 #if defined(DEBUG) || !HAVE_STRERROR
389 #define strerror /* poisoned */ dontuse_strerror
390 #define cstrerror /* replaced */ cstrerror
391 extern const char *cstrerror(int);
393 #define cstrerror(errnum) ((const char *)strerror(errnum))
397 size_t strlcpy(char *, const char *, size_t);
401 /* XXX imake style */
402 #define makedev mkdev
403 extern int __cdecl seteuid(uid_t);
404 extern int __cdecl setegid(gid_t);
407 #if defined(__COHERENT__)
409 /* this need not work everywhere, take care */
410 #define O_ACCMODE (O_RDONLY | O_WRONLY | O_RDWR)
418 #ifdef MKSH__NO_SYMLINK
420 #define S_ISLNK(m) (/* CONSTCOND */ 0)
421 #define mksh_lstat stat
423 #define mksh_lstat lstat
427 #define mksh_ttyst struct termios
428 #define mksh_tcget(fd,st) tcgetattr((fd), (st))
429 #define mksh_tcset(fd,st) tcsetattr((fd), TCSADRAIN, (st))
431 #define mksh_ttyst struct termio
432 #define mksh_tcget(fd,st) ioctl((fd), TCGETA, (st))
433 #define mksh_tcset(fd,st) ioctl((fd), TCSETAW, (st))
441 /* some useful #defines */
443 # define E_INIT(i) = i
446 # define EXTERN extern
447 # define EXTERN_DEFINED
450 /* define bit in flag */
451 #define BIT(i) (1 << (i))
452 #define NELEM(a) (sizeof(a) / sizeof((a)[0]))
455 * Make MAGIC a char that might be printed to make bugs more obvious, but
456 * not a char that is used often. Also, can't use the high bit as it causes
457 * portability problems (calling strchr(x, 0x80 | 'x') is error prone).
459 #define MAGIC (7) /* prefix for *?[!{,} during expand */
460 #define ISMAGIC(c) ((unsigned char)(c) == MAGIC)
462 EXTERN const char *safe_prompt; /* safe prompt if PS1 substitution fails */
464 #ifdef MKSH_LEGACY_MODE
465 #define KSH_VERSIONNAME "LEGACY"
467 #define KSH_VERSIONNAME "MIRBSD"
469 EXTERN const char initvsn[] E_INIT("KSH_VERSION=@(#)" KSH_VERSIONNAME \
470 " KSH " MKSH_VERSION);
471 #define KSH_VERSION (initvsn + /* "KSH_VERSION=@(#)" */ 16)
473 EXTERN const char digits_uc[] E_INIT("0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ");
474 EXTERN const char digits_lc[] E_INIT("0123456789abcdefghijklmnopqrstuvwxyz");
477 * Evil hack for const correctness due to API brokenness
489 * Evil hack since casting uint to sint is implementation-defined
496 /* for const debugging */
497 #if defined(DEBUG) && defined(__GNUC__) && !defined(__ICC) && \
498 !defined(__INTEL_COMPILER) && !defined(__SUNPRO_C)
499 char *ucstrchr(char *, int);
500 char *ucstrstr(char *, const char *);
502 #define strchr ucstrchr
503 #define strstr ucstrstr
504 #define cstrchr(s,c) ({ \
505 union mksh_cchack in, out; \
508 out.rw = ucstrchr(in.rw, (c)); \
511 #define cstrstr(b,l) ({ \
512 union mksh_cchack in, out; \
515 out.rw = ucstrstr(in.rw, (l)); \
518 #define vstrchr(s,c) (cstrchr((s), (c)) != NULL)
519 #define vstrstr(b,l) (cstrstr((b), (l)) != NULL)
520 #else /* !DEBUG, !gcc */
521 #define cstrchr(s,c) ((const char *)strchr((s), (c)))
522 #define cstrstr(s,c) ((const char *)strstr((s), (c)))
523 #define vstrchr(s,c) (strchr((s), (c)) != NULL)
524 #define vstrstr(b,l) (strstr((b), (l)) != NULL)
527 #if defined(DEBUG) || defined(__COVERITY__)
528 #define mkssert(e) do { if (!(e)) exit(255); } while (/* CONSTCOND */ 0)
533 #define mkssert(e) do { } while (/* CONSTCOND */ 0)
536 #if (!defined(MKSH_BUILDMAKEFILE4BSD) && !defined(MKSH_BUILDSH)) || (MKSH_BUILD_R != 501)
537 #error Must run Build.sh to compile this.
538 extern void thiswillneverbedefinedIhope(void);
542 /* I’m sorry, Dave. I’m afraid I can’t do that. */
543 return (thiswillneverbedefinedIhope());
547 /* use this ipv strchr(s, 0) but no side effects in s! */
548 #define strnul(s) ((s) + strlen(s))
550 #define utf_ptradjx(src, dst) do { \
551 (dst) = (src) + utf_ptradj(src); \
552 } while (/* CONSTCOND */ 0)
554 #if defined(MKSH_SMALL) && !defined(MKSH_SMALL_BUT_FAST)
555 #define strdupx(d, s, ap) do { \
556 (d) = strdup_i((s), (ap)); \
557 } while (/* CONSTCOND */ 0)
558 #define strndupx(d, s, n, ap) do { \
559 (d) = strndup_i((s), (n), (ap)); \
560 } while (/* CONSTCOND */ 0)
562 /* be careful to evaluate arguments only once! */
563 #define strdupx(d, s, ap) do { \
564 const char *strdup_src = (s); \
565 char *strdup_dst = NULL; \
567 if (strdup_src != NULL) { \
568 size_t strdup_len = strlen(strdup_src) + 1; \
569 strdup_dst = alloc(strdup_len, (ap)); \
570 memcpy(strdup_dst, strdup_src, strdup_len); \
573 } while (/* CONSTCOND */ 0)
574 #define strndupx(d, s, n, ap) do { \
575 const char *strdup_src = (s); \
576 char *strdup_dst = NULL; \
578 if (strdup_src != NULL) { \
579 size_t strndup_len = (n); \
580 strdup_dst = alloc(strndup_len + 1, (ap)); \
581 memcpy(strdup_dst, strdup_src, strndup_len); \
582 strdup_dst[strndup_len] = '\0'; \
585 } while (/* CONSTCOND */ 0)
588 #ifdef MKSH_LEGACY_MODE
589 #ifndef MKSH_NO_CMDLINE_EDITING
590 #define MKSH_NO_CMDLINE_EDITING /* defined */
592 #ifndef MKSH_CONSERVATIVE_FDS
593 #define MKSH_CONSERVATIVE_FDS /* defined */
596 #define MKSH_S_NOVI 1
600 #ifndef MKSH_CONSERVATIVE_FDS
601 #define MKSH_CONSERVATIVE_FDS /* defined */
604 #define MKSH_NOPWNAM /* defined */
607 #define MKSH_S_NOVI 1
612 #define MKSH_S_NOVI 0
615 #if defined(MKSH_NOPROSPECTOFWORK) && !defined(MKSH_UNEMPLOYED)
616 #define MKSH_UNEMPLOYED 1
619 /* these shall be smaller than 100 */
620 #ifdef MKSH_CONSERVATIVE_FDS
621 #define NUFILE 32 /* Number of user-accessible files */
622 #define FDBASE 10 /* First file usable by Shell */
624 #define NUFILE 56 /* Number of user-accessible files */
625 #define FDBASE 24 /* First file usable by Shell */
629 * simple grouping allocator
633 /* 0. OS API: where to get memory from and how to free it (grouped) */
635 /* malloc(3)/realloc(3) -> free(3) for use by the memory allocator */
636 #define malloc_osi(sz) malloc(sz)
637 #define realloc_osi(p,sz) realloc((p), (sz))
638 #define free_osimalloc(p) free(p)
640 /* malloc(3)/realloc(3) -> free(3) for use by mksh code */
641 #define malloc_osfunc(sz) malloc(sz)
642 #define realloc_osfunc(p,sz) realloc((p), (sz))
643 #define free_osfunc(p) free(p)
646 /* setmode(3) -> free(3) */
647 #define free_ossetmode(p) free(p)
650 #ifdef MKSH__NO_PATH_MAX
651 /* GNU libc: get_current_dir_name(3) -> free(3) */
652 #define free_gnu_gcdn(p) free(p)
656 /* 1. internal structure */
662 #define ALLOC_ITEM struct lalloc
663 #define ALLOC_SIZE (sizeof(ALLOC_ITEM))
665 /* 3. group structure (only the same for lalloc.c) */
666 typedef struct lalloc Area;
669 EXTERN Area aperm; /* permanent object space */
671 #define ATEMP &e->area
674 * flags (the order of these enums MUST match the order in misc.c(options[]))
677 #define SHFLAGS_ENUMS
678 #include "sh_flags.gen"
679 FNFLAGS /* (place holder: how many flags are there) */
682 #define Flag(f) (shell_flags[(int)(f)])
683 #define UTFMODE Flag(FUNICODE)
686 * parsing & execution environment
688 * note that kshlongjmp MUST NOT be passed 0 as second argument!
690 #ifdef MKSH_NO_SIGSETJMP
691 #define kshjmp_buf jmp_buf
692 #define kshsetjmp(jbuf) _setjmp(jbuf)
693 #define kshlongjmp _longjmp
695 #define kshjmp_buf sigjmp_buf
696 #define kshsetjmp(jbuf) sigsetjmp((jbuf), 0)
697 #define kshlongjmp siglongjmp
700 struct sretrace_info;
701 struct yyrecursive_state;
703 EXTERN struct sretrace_info *retrace_info E_INIT(NULL);
704 EXTERN int subshell_nesting_type E_INIT(0);
707 ALLOC_ITEM alloc_INT; /* internal, do not touch */
708 Area area; /* temporary allocation area */
709 struct env *oenv; /* link to previous environment */
710 struct block *loc; /* local variables and functions */
711 short *savefd; /* original redirected fds */
712 struct temp *temps; /* temp files */
713 /* saved parser recursion state */
714 struct yyrecursive_state *yyrecursive_statep;
715 kshjmp_buf jbuf; /* long jump back to env creator */
716 uint8_t type; /* environment type - see below */
717 uint8_t flags; /* EF_* */
720 /* struct env.type values */
721 #define E_NONE 0 /* dummy environment */
722 #define E_PARSE 1 /* parsing command # */
723 #define E_FUNC 2 /* executing function # */
724 #define E_INCL 3 /* including a file via . # */
725 #define E_EXEC 4 /* executing command tree */
726 #define E_LOOP 5 /* executing for/while # */
727 #define E_ERRH 6 /* general error handler # */
728 #define E_GONE 7 /* hidden in child */
729 /* # indicates env has valid jbuf (see unwind()) */
731 /* struct env.flag values */
732 #define EF_BRKCONT_PASS BIT(1) /* set if E_LOOP must pass break/continue on */
733 #define EF_FAKE_SIGDIE BIT(2) /* hack to get info from unwind to quitenv */
735 /* Do breaks/continues stop at env type e? */
736 #define STOP_BRKCONT(t) ((t) == E_NONE || (t) == E_PARSE || \
737 (t) == E_FUNC || (t) == E_INCL)
738 /* Do returns stop at env type e? */
739 #define STOP_RETURN(t) ((t) == E_FUNC || (t) == E_INCL)
741 /* values for kshlongjmp(e->jbuf, i) */
742 /* note that i MUST NOT be zero */
743 #define LRETURN 1 /* return statement */
744 #define LEXIT 2 /* exit statement */
745 #define LERROR 3 /* errorf() called */
746 #define LLEAVE 4 /* untrappable exit/error */
747 #define LINTR 5 /* ^C noticed */
748 #define LBREAK 6 /* break statement */
749 #define LCONTIN 7 /* continue statement */
750 #define LSHELL 8 /* return to interactive shell() */
751 #define LAEXPR 9 /* error in arithmetic expression */
753 /* sort of shell global state */
754 EXTERN pid_t procpid; /* PID of executing process */
755 EXTERN int exstat; /* exit status */
756 EXTERN int subst_exstat; /* exit status of last $(..)/`..` */
757 EXTERN struct tbl *vp_pipest; /* global PIPESTATUS array */
758 EXTERN short trap_exstat; /* exit status before running a trap */
759 EXTERN uint8_t trap_nested; /* running nested traps */
760 EXTERN uint8_t shell_flags[FNFLAGS];
761 EXTERN const char *kshname; /* $0 */
763 uid_t kshuid_v; /* real UID of shell */
764 uid_t ksheuid_v; /* effective UID of shell */
765 gid_t kshgid_v; /* real GID of shell */
766 gid_t kshegid_v; /* effective GID of shell */
767 pid_t kshpgrp_v; /* process group of shell */
768 pid_t kshppid_v; /* PID of parent of shell */
769 pid_t kshpid_v; /* $$, shell PID */
772 #define kshpid rndsetupstate.kshpid_v
773 #define kshpgrp rndsetupstate.kshpgrp_v
774 #define kshuid rndsetupstate.kshuid_v
775 #define ksheuid rndsetupstate.ksheuid_v
776 #define kshgid rndsetupstate.kshgid_v
777 #define kshegid rndsetupstate.kshegid_v
778 #define kshppid rndsetupstate.kshppid_v
781 /* option processing */
782 #define OF_CMDLINE 0x01 /* command line */
783 #define OF_SET 0x02 /* set builtin */
784 #define OF_SPECIAL 0x04 /* a special variable changing */
785 #define OF_INTERNAL 0x08 /* set internally by shell */
786 #define OF_FIRSTTIME 0x10 /* as early as possible, once */
787 #define OF_ANY (OF_CMDLINE | OF_SET | OF_SPECIAL | OF_INTERNAL)
789 /* null value for variable; comparison pointer for unset */
790 EXTERN char null[] E_INIT("");
791 /* helpers for string pooling */
792 EXTERN const char Tintovfl[] E_INIT("integer overflow %zu %c %zu prevented");
793 EXTERN const char Toomem[] E_INIT("can't allocate %zu data bytes");
794 #if defined(__GNUC__)
795 /* trust this to have string pooling; -Wformat bitches otherwise */
796 #define Tsynerr "syntax error"
798 EXTERN const char Tsynerr[] E_INIT("syntax error");
800 EXTERN const char Tselect[] E_INIT("select");
801 EXTERN const char Tr_fc_e_dash[] E_INIT("r=fc -e -");
802 #define Tfc_e_dash (Tr_fc_e_dash + 2) /* "fc -e -" */
803 #define Zfc_e_dash 7 /* strlen(Tfc_e_dash) */
804 EXTERN const char Tlocal_typeset[] E_INIT("local=typeset");
805 #define T_typeset (Tlocal_typeset + 5) /* "=typeset" */
806 #define Ttypeset (Tlocal_typeset + 6) /* "typeset" */
807 EXTERN const char Talias[] E_INIT("alias");
808 EXTERN const char Tunalias[] E_INIT("unalias");
809 EXTERN const char Tsgset[] E_INIT("*=set");
810 #define Tset (Tsgset + 2) /* "set" */
811 EXTERN const char Tsgunset[] E_INIT("*=unset");
812 #define Tunset (Tsgunset + 2) /* "unset" */
813 EXTERN const char Tsgexport[] E_INIT("*=export");
814 #define Texport (Tsgexport + 2) /* "export" */
815 EXTERN const char Tsgreadonly[] E_INIT("*=readonly");
816 #define Treadonly (Tsgreadonly + 2) /* "readonly" */
817 EXTERN const char Tgbuiltin[] E_INIT("=builtin");
818 #define Tbuiltin (Tgbuiltin + 1) /* "builtin" */
819 EXTERN const char T_function[] E_INIT(" function");
820 #define Tfunction (T_function + 1) /* "function" */
821 EXTERN const char TC_LEX1[] E_INIT("|&;<>() \t\n");
822 #define TC_IFSWS (TC_LEX1 + 7) /* space tab newline */
824 typedef uint8_t Temp_type;
825 /* expanded heredoc */
826 #define TT_HEREDOC_EXP 0
827 /* temporary file used for history editing (fc -e) */
828 #define TT_HIST_EDIT 1
829 /* temporary file used during in-situ command substitution */
832 /* temp/heredoc files. The file is removed when the struct is freed. */
836 /* pid of process parsed here-doc */
839 /* actually longer: name (variable length) */
844 * stdio and our IO routines
847 #define shl_xtrace (&shf_iob[0]) /* for set -x */
848 #define shl_stdout (&shf_iob[1])
849 #define shl_out (&shf_iob[2])
851 #define shl_dbg (&shf_iob[3]) /* for DF() */
853 EXTERN bool shl_stdout_ok;
858 typedef struct trap {
859 const char *name; /* short name */
860 const char *mess; /* descriptive name */
861 char *trap; /* trap command */
862 sig_t cursig; /* current handler (valid if TF_ORIG_* set) */
863 sig_t shtrap; /* shell signal handler */
864 int signal; /* signal number */
865 int flags; /* TF_* */
866 volatile sig_atomic_t set; /* trap pending */
869 /* values for Trap.flags */
870 #define TF_SHELL_USES BIT(0) /* shell uses signal, user can't change */
871 #define TF_USER_SET BIT(1) /* user has (tried to) set trap */
872 #define TF_ORIG_IGN BIT(2) /* original action was SIG_IGN */
873 #define TF_ORIG_DFL BIT(3) /* original action was SIG_DFL */
874 #define TF_EXEC_IGN BIT(4) /* restore SIG_IGN just before exec */
875 #define TF_EXEC_DFL BIT(5) /* restore SIG_DFL just before exec */
876 #define TF_DFL_INTR BIT(6) /* when received, default action is LINTR */
877 #define TF_TTY_INTR BIT(7) /* tty generated signal (see j_waitj) */
878 #define TF_CHANGED BIT(8) /* used by runtrap() to detect trap changes */
879 #define TF_FATAL BIT(9) /* causes termination if not trapped */
881 /* values for setsig()/setexecsig() flags argument */
882 #define SS_RESTORE_MASK 0x3 /* how to restore a signal before an exec() */
883 #define SS_RESTORE_CURR 0 /* leave current handler in place */
884 #define SS_RESTORE_ORIG 1 /* restore original handler */
885 #define SS_RESTORE_DFL 2 /* restore to SIG_DFL */
886 #define SS_RESTORE_IGN 3 /* restore to SIG_IGN */
887 #define SS_FORCE BIT(3) /* set signal even if original signal ignored */
888 #define SS_USER BIT(4) /* user is doing the set (ie, trap command) */
889 #define SS_SHTRAP BIT(5) /* trap for internal use (ALRM, CHLD, WINCH) */
891 #define ksh_SIGEXIT 0 /* for trap EXIT */
892 #define ksh_SIGERR NSIG /* for trap ERR */
894 EXTERN volatile sig_atomic_t trap; /* traps pending? */
895 EXTERN volatile sig_atomic_t intrsig; /* pending trap interrupts command */
896 EXTERN volatile sig_atomic_t fatal_trap; /* received a fatal signal */
897 extern Trap sigtraps[NSIG+1];
899 /* got_winch = 1 when we need to re-adjust the window size */
901 EXTERN volatile sig_atomic_t got_winch E_INIT(1);
903 #define got_winch true
909 /* values for ksh_tmout_state */
911 TMOUT_EXECUTING = 0, /* executing commands */
912 TMOUT_READING, /* waiting for input */
913 TMOUT_LEAVING /* have timed out */
915 EXTERN unsigned int ksh_tmout;
916 EXTERN enum tmout_enum ksh_tmout_state E_INIT(TMOUT_EXECUTING);
918 /* For "You have stopped jobs" message */
919 EXTERN bool really_exit;
922 * fast character classes
924 #define C_ALPHA BIT(0) /* a-z_A-Z */
925 #define C_DIGIT BIT(1) /* 0-9 */
926 #define C_LEX1 BIT(2) /* \t \n\0|&;<>() */
927 #define C_VAR1 BIT(3) /* *@#!$-? */
928 #define C_IFSWS BIT(4) /* \t \n (IFS white space) */
929 #define C_SUBOP1 BIT(5) /* "=-+?" */
930 #define C_QUOTE BIT(6) /* \t\n "#$&'()*;<=>?[\]`| (needing quoting) */
931 #define C_IFS BIT(7) /* $IFS */
932 #define C_SUBOP2 BIT(8) /* "#%" (magic, see below) */
934 extern unsigned char chtypes[];
936 #define ctype(c, t) tobool( ((t) == C_SUBOP2) ? \
937 (((c) == '#' || (c) == '%') ? 1 : 0) : \
938 (chtypes[(unsigned char)(c)] & (t)) )
939 #define ksh_isalphx(c) ctype((c), C_ALPHA)
940 #define ksh_isalnux(c) ctype((c), C_ALPHA | C_DIGIT)
942 EXTERN int ifs0 E_INIT(' '); /* for "$*" */
944 /* Argument parsing for built-in commands and getopts command */
946 /* Values for Getopt.flags */
947 #define GF_ERROR BIT(0) /* call errorf() if there is an error */
948 #define GF_PLUSOPT BIT(1) /* allow +c as an option */
949 #define GF_NONAME BIT(2) /* don't print argv[0] in errors */
951 /* Values for Getopt.info */
952 #define GI_MINUS BIT(0) /* an option started with -... */
953 #define GI_PLUS BIT(1) /* an option started with +... */
954 #define GI_MINUSMINUS BIT(2) /* arguments were ended with -- */
956 /* in case some OS defines these */
963 int uoptind; /* what user sees in $OPTIND */
964 int flags; /* see GF_* */
965 int info; /* see GI_* */
966 unsigned int p; /* 0 or index into argv[optind - 1] */
967 char buf[2]; /* for bad option OPTARG value */
970 EXTERN Getopt builtin_opt; /* for shell builtin commands */
971 EXTERN Getopt user_opt; /* parsing state for getopts builtin command */
973 /* This for co-processes */
975 /* something that won't (realisticly) wrap */
976 typedef int32_t Coproc_id;
979 void *job; /* 0 or job of co-process using input pipe */
980 int read; /* pipe from co-process's stdout */
981 int readw; /* other side of read (saved temporarily) */
982 int write; /* pipe to co-process's stdin */
983 int njobs; /* number of live jobs using output pipe */
984 Coproc_id id; /* id of current output pipe */
986 EXTERN struct coproc coproc;
988 #ifndef MKSH_NOPROSPECTOFWORK
989 /* used in jobs.c and by coprocess stuff in exec.c and select() calls */
990 EXTERN sigset_t sm_default, sm_sigchld;
993 /* name of called builtin function (used by error functions) */
994 EXTERN const char *builtin_argv0;
995 /* flags of called builtin (SPEC_BI, etc.) */
996 EXTERN uint32_t builtin_flag;
998 /* current working directory */
999 EXTERN char *current_wd;
1001 /* input line size */
1002 #define LINE (4096 - ALLOC_SIZE)
1004 * Minimum required space to work with on a line - if the prompt leaves
1005 * less space than this on a line, the prompt is truncated.
1007 #define MIN_EDIT_SPACE 7
1009 * Minimum allowed value for x_cols: 2 for prompt, 3 for " < " at end of line
1011 #define MIN_COLS (2 + MIN_EDIT_SPACE + 3)
1013 EXTERN mksh_ari_t x_cols E_INIT(80); /* tty columns */
1014 EXTERN mksh_ari_t x_lins E_INIT(24); /* tty lines */
1017 /* Determine the location of the system (common) profile */
1019 #ifndef MKSH_DEFAULT_PROFILEDIR
1020 #if defined(ANDROID)
1021 #define MKSH_DEFAULT_PROFILEDIR "/system/etc"
1023 #define MKSH_DEFAULT_PROFILEDIR "/etc"
1027 #define MKSH_SYSTEM_PROFILE MKSH_DEFAULT_PROFILEDIR "/profile"
1028 #define MKSH_SUID_PROFILE MKSH_DEFAULT_PROFILEDIR "/suid_profile"
1031 /* Used by v_evaluate() and setstr() to control action when error occurs */
1032 #define KSH_UNWIND_ERROR 0 /* unwind the stack (kshlongjmp) */
1033 #define KSH_RETURN_ERROR 1 /* return 1/0 for success/failure */
1036 * Shell file I/O routines
1039 #define SHF_BSIZE 512
1041 #define shf_fileno(shf) ((shf)->fd)
1042 #define shf_setfileno(shf,nfd) ((shf)->fd = (nfd))
1043 #define shf_getc_i(shf) ((shf)->rnleft > 0 ? \
1044 (shf)->rnleft--, *(shf)->rp++ : \
1046 #define shf_putc_i(c, shf) ((shf)->wnleft == 0 ? \
1047 shf_putchar((c), (shf)) : \
1048 ((shf)->wnleft--, *(shf)->wp++ = (c)))
1049 #define shf_eof(shf) ((shf)->flags & SHF_EOF)
1050 #define shf_error(shf) ((shf)->flags & SHF_ERROR)
1051 #define shf_errno(shf) ((shf)->errnosv)
1052 #define shf_clearerr(shf) ((shf)->flags &= ~(SHF_EOF | SHF_ERROR))
1054 /* Flags passed to shf_*open() */
1055 #define SHF_RD 0x0001
1056 #define SHF_WR 0x0002
1057 #define SHF_RDWR (SHF_RD|SHF_WR)
1058 #define SHF_ACCMODE 0x0003 /* mask */
1059 #define SHF_GETFL 0x0004 /* use fcntl() to figure RD/WR flags */
1060 #define SHF_UNBUF 0x0008 /* unbuffered I/O */
1061 #define SHF_CLEXEC 0x0010 /* set close on exec flag */
1062 #define SHF_MAPHI 0x0020 /* make fd > FDBASE (and close orig)
1063 * (shf_open() only) */
1064 #define SHF_DYNAMIC 0x0040 /* string: increase buffer as needed */
1065 #define SHF_INTERRUPT 0x0080 /* EINTR in read/write causes error */
1066 /* Flags used internally */
1067 #define SHF_STRING 0x0100 /* a string, not a file */
1068 #define SHF_ALLOCS 0x0200 /* shf and shf->buf were alloc()ed */
1069 #define SHF_ALLOCB 0x0400 /* shf->buf was alloc()ed */
1070 #define SHF_ERROR 0x0800 /* read()/write() error */
1071 #define SHF_EOF 0x1000 /* read eof (sticky) */
1072 #define SHF_READING 0x2000 /* currently reading: rnleft,rp valid */
1073 #define SHF_WRITING 0x4000 /* currently writing: wnleft,wp valid */
1077 Area *areap; /* area shf/buf were allocated in */
1078 unsigned char *rp; /* read: current position in buffer */
1079 unsigned char *wp; /* write: current position in buffer */
1080 unsigned char *buf; /* buffer */
1081 ssize_t bsize; /* actual size of buf */
1082 ssize_t rbsize; /* size of buffer (1 if SHF_UNBUF) */
1083 ssize_t rnleft; /* read: how much data left in buffer */
1084 ssize_t wbsize; /* size of buffer (0 if SHF_UNBUF) */
1085 ssize_t wnleft; /* write: how much space left in buffer */
1086 int flags; /* see SHF_* */
1087 int fd; /* file descriptor */
1088 int errnosv; /* saved value of errno after error */
1091 extern struct shf shf_iob[];
1094 Area *areap; /* area to allocate entries */
1095 struct tbl **tbls; /* hashed table items */
1096 size_t nfree; /* free table entries */
1097 uint8_t tshift; /* table size (2^tshift) */
1102 /* Area to allocate from */
1106 char *s; /* string */
1107 mksh_ari_t i; /* integer */
1108 mksh_uari_t u; /* unsigned integer */
1109 int (*f)(const char **); /* built-in command */
1110 struct op *t; /* "function" tree */
1113 struct tbl *array; /* array values */
1114 const char *fpath; /* temporary path to undef function */
1117 int field; /* field with for -L/-R/-Z */
1118 int errnov; /* CEXEC/CTALIAS */
1121 uint32_t hval; /* hash(name) */
1122 uint32_t index; /* index for an array */
1125 * command type (see below), base (if INTEGER),
1126 * offset from val.s of value (if EXPORT)
1129 /* flags (see below) */
1132 /* actually longer: name (variable length) */
1136 EXTERN struct tbl vtemp;
1138 /* common flag bits */
1139 #define ALLOC BIT(0) /* val.s has been allocated */
1140 #define DEFINED BIT(1) /* is defined in block */
1141 #define ISSET BIT(2) /* has value, vp->val.[si] */
1142 #define EXPORT BIT(3) /* exported variable/function */
1143 #define TRACE BIT(4) /* var: user flagged, func: execution tracing */
1144 /* (start non-common flags at 8) */
1145 /* flag bits used for variables */
1146 #define SPECIAL BIT(8) /* PATH, IFS, SECONDS, etc */
1147 #define INTEGER BIT(9) /* val.i contains integer value */
1148 #define RDONLY BIT(10) /* read-only variable */
1149 #define LOCAL BIT(11) /* for local typeset() */
1150 #define ARRAY BIT(13) /* array */
1151 #define LJUST BIT(14) /* left justify */
1152 #define RJUST BIT(15) /* right justify */
1153 #define ZEROFIL BIT(16) /* 0 filled if RJUSTIFY, strip 0s if LJUSTIFY */
1154 #define LCASEV BIT(17) /* convert to lower case */
1155 #define UCASEV_AL BIT(18) /* convert to upper case / autoload function */
1156 #define INT_U BIT(19) /* unsigned integer */
1157 #define INT_L BIT(20) /* long integer (no-op but used as magic) */
1158 #define IMPORT BIT(21) /* flag to typeset(): no arrays, must have = */
1159 #define LOCAL_COPY BIT(22) /* with LOCAL - copy attrs from existing var */
1160 #define EXPRINEVAL BIT(23) /* contents currently being evaluated */
1161 #define EXPRLVALUE BIT(24) /* useable as lvalue (temp flag) */
1162 #define AINDEX BIT(25) /* array index >0 = ua.index filled in */
1163 #define ASSOC BIT(26) /* ARRAY ? associative : reference */
1164 /* flag bits used for taliases/builtins/aliases/keywords/functions */
1165 #define KEEPASN BIT(8) /* keep command assignments (eg, var=x cmd) */
1166 #define FINUSE BIT(9) /* function being executed */
1167 #define FDELETE BIT(10) /* function deleted while it was executing */
1168 #define FKSH BIT(11) /* function defined with function x (vs x()) */
1169 #define SPEC_BI BIT(12) /* a POSIX special builtin */
1171 * Attributes that can be set by the user (used to decide if an unset
1172 * param should be repoted by set/typeset). Does not include ARRAY or
1175 #define USERATTRIB (EXPORT|INTEGER|RDONLY|LJUST|RJUST|ZEROFIL|\
1176 LCASEV|UCASEV_AL|INT_U|INT_L)
1178 #define arrayindex(vp) ((unsigned long)((vp)->flag & AINDEX ? \
1179 (vp)->ua.index : 0))
1188 #define CNONE 0 /* undefined */
1189 #define CSHELL 1 /* built-in */
1190 #define CFUNC 2 /* function */
1191 #define CEXEC 4 /* executable command */
1192 #define CALIAS 5 /* alias */
1193 #define CKEYWD 6 /* keyword */
1194 #define CTALIAS 7 /* tracked alias */
1196 /* Flags for findcom()/comexec() */
1197 #define FC_SPECBI BIT(0) /* special builtin */
1198 #define FC_FUNC BIT(1) /* function */
1199 #define FC_NORMBI BIT(2) /* not special builtin */
1200 #define FC_BI (FC_SPECBI | FC_NORMBI)
1201 #define FC_PATH BIT(3) /* do path search */
1202 #define FC_DEFPATH BIT(4) /* use default path in path search */
1205 #define AF_ARGV_ALLOC 0x1 /* argv[] array allocated */
1206 #define AF_ARGS_ALLOCED 0x2 /* argument strings allocated */
1207 #define AI_ARGV(a, i) ((i) == 0 ? (a).argv[0] : (a).argv[(i) - (a).skip])
1208 #define AI_ARGC(a) ((a).ai_argc - (a).skip)
1210 /* Argument info. Used for $#, $* for shell, functions, includes, etc. */
1213 int flags; /* AF_* */
1215 int skip; /* first arg is argv[0], second is argv[1 + skip] */
1219 * activation record for function blocks
1222 Area area; /* area to allocate things */
1224 char *error; /* error handler */
1225 char *exit; /* exit handler */
1226 struct block *next; /* enclosing block */
1227 struct table vars; /* local variables */
1228 struct table funs; /* local functions */
1229 Getopt getopts_state;
1231 int flags; /* see BF_* */
1234 /* Values for struct block.flags */
1235 #define BF_DOGETOPTS BIT(0) /* save/restore getopts state */
1238 * Used by ktwalk() and ktnext() routines.
1245 EXTERN struct table taliases; /* tracked aliases */
1246 EXTERN struct table builtins; /* built-in commands */
1247 EXTERN struct table aliases; /* aliases */
1248 EXTERN struct table keywords; /* keywords */
1249 #ifndef MKSH_NOPWNAM
1250 EXTERN struct table homedirs; /* homedir() cache */
1255 int (*func)(const char **);
1258 extern const struct builtin mkshbuiltins[];
1260 /* values for set_prompt() */
1261 #define PS1 0 /* command */
1262 #define PS2 1 /* command continuation */
1264 EXTERN char *path; /* copy of either PATH or def_path */
1265 EXTERN const char *def_path; /* path to use if PATH not set */
1266 EXTERN char *tmpdir; /* TMPDIR value */
1267 EXTERN const char *prompt;
1268 EXTERN int cur_prompt; /* PS1 or PS2 */
1269 EXTERN int current_lineno; /* LINENO value */
1272 * Description of a command or an operation on commands.
1275 const char **args; /* arguments to a command */
1276 char **vars; /* variable assignments */
1277 struct ioword **ioact; /* IO actions (eg, < > >>) */
1278 struct op *left, *right; /* descendents */
1279 char *str; /* word for case; identifier for for,
1280 * select, and functions;
1281 * path to execute for TEXEC;
1282 * time hook for TCOM.
1284 int lineno; /* TCOM/TFUNC: LINENO for this */
1285 short type; /* operation type, see below */
1286 /* WARNING: newtp(), tcopy() use evalflags = 0 to clear union */
1288 /* TCOM: arg expansion eval() flags */
1290 /* TFUNC: function x (vs x()) */
1292 /* TPAT: termination character */
1297 /* Tree.type values */
1299 #define TCOM 1 /* command */
1300 #define TPAREN 2 /* (c-list) */
1301 #define TPIPE 3 /* a | b */
1302 #define TLIST 4 /* a ; b */
1303 #define TOR 5 /* || */
1304 #define TAND 6 /* && */
1305 #define TBANG 7 /* ! */
1306 #define TDBRACKET 8 /* [[ .. ]] */
1314 #define TPAT 16 /* pattern in case */
1315 #define TBRACE 17 /* {c-list} */
1316 #define TASYNC 18 /* c & */
1317 #define TFUNCT 19 /* function name { command; } */
1318 #define TTIME 20 /* time pipeline */
1319 #define TEXEC 21 /* fork/exec eval'd TCOM */
1320 #define TCOPROC 22 /* coprocess |& */
1323 * prefix codes for words in command tree
1325 #define EOS 0 /* end of string */
1326 #define CHAR 1 /* unquoted character */
1327 #define QCHAR 2 /* quoted character */
1328 #define COMSUB 3 /* $() substitution (0 terminated) */
1329 #define EXPRSUB 4 /* $(()) substitution (0 terminated) */
1330 #define OQUOTE 5 /* opening " or ' */
1331 #define CQUOTE 6 /* closing " or ' */
1332 #define OSUBST 7 /* opening ${ subst (followed by { or X) */
1333 #define CSUBST 8 /* closing } of above (followed by } or X) */
1334 #define OPAT 9 /* open pattern: *(, @(, etc. */
1335 #define SPAT 10 /* separate pattern: | */
1336 #define CPAT 11 /* close pattern: ) */
1337 #define ADELIM 12 /* arbitrary delimiter: ${foo:2:3} ${foo/bar/baz} */
1338 #define FUNSUB 14 /* ${ foo;} substitution (NUL terminated) */
1339 #define VALSUB 15 /* ${|foo;} substitution (NUL terminated) */
1345 int unit; /* unit affected */
1346 int flag; /* action (below) */
1347 char *name; /* file name (unused if heredoc) */
1348 char *delim; /* delimiter for <<,<<- */
1349 char *heredoc; /* content of heredoc */
1352 /* ioword.flag - type of redirection */
1353 #define IOTYPE 0xF /* type: bits 0:3 */
1354 #define IOREAD 0x1 /* < */
1355 #define IOWRITE 0x2 /* > */
1356 #define IORDWR 0x3 /* <>: todo */
1357 #define IOHERE 0x4 /* << (here file) */
1358 #define IOCAT 0x5 /* >> */
1359 #define IODUP 0x6 /* <&/>& */
1360 #define IOEVAL BIT(4) /* expand in << */
1361 #define IOSKIP BIT(5) /* <<-, skip ^\t* */
1362 #define IOCLOB BIT(6) /* >|, override -o noclobber */
1363 #define IORDUP BIT(7) /* x<&y (as opposed to x>&y) */
1364 #define IONAMEXP BIT(8) /* name has been expanded */
1365 #define IOBASH BIT(9) /* &> etc. */
1366 #define IOHERESTR BIT(10) /* <<< (here string) */
1367 #define IONDELIM BIT(11) /* null delimiter (<<) */
1369 /* execute/exchild flags */
1370 #define XEXEC BIT(0) /* execute without forking */
1371 #define XFORK BIT(1) /* fork before executing */
1372 #define XBGND BIT(2) /* command & */
1373 #define XPIPEI BIT(3) /* input is pipe */
1374 #define XPIPEO BIT(4) /* output is pipe */
1375 #define XXCOM BIT(5) /* `...` command */
1376 #define XPCLOSE BIT(6) /* exchild: close close_fd in parent */
1377 #define XCCLOSE BIT(7) /* exchild: close close_fd in child */
1378 #define XERROK BIT(8) /* non-zero exit ok (for set -e) */
1379 #define XCOPROC BIT(9) /* starting a co-process */
1380 #define XTIME BIT(10) /* timing TCOM command */
1381 #define XPIPEST BIT(11) /* want PIPESTATUS */
1384 * flags to control expansion of words (assumed by t->evalflags to fit
1387 #define DOBLANK BIT(0) /* perform blank interpretation */
1388 #define DOGLOB BIT(1) /* expand [?* */
1389 #define DOPAT BIT(2) /* quote *?[ */
1390 #define DOTILDE BIT(3) /* normal ~ expansion (first char) */
1391 #define DONTRUNCOMMAND BIT(4) /* do not run $(command) things */
1392 #define DOASNTILDE BIT(5) /* assignment ~ expansion (after =, :) */
1393 #define DOBRACE BIT(6) /* used by expand(): do brace expansion */
1394 #define DOMAGIC BIT(7) /* used by expand(): string contains MAGIC */
1395 #define DOTEMP BIT(8) /* dito: in word part of ${..[%#=?]..} */
1396 #define DOVACHECK BIT(9) /* var assign check (for typeset, set, etc) */
1397 #define DOMARKDIRS BIT(10) /* force markdirs behaviour */
1398 #define DOTCOMEXEC BIT(11) /* not an eval flag, used by sh -c hack */
1400 #define X_EXTRA 20 /* this many extra bytes in X string */
1402 typedef struct XString {
1403 char *end, *beg; /* end, begin of string */
1404 size_t len; /* length */
1405 Area *areap; /* area to allocate/free from */
1408 typedef char *XStringP;
1410 /* initialise expandable string */
1411 #define XinitN(xs, length, area) do { \
1412 (xs).len = (length); \
1413 (xs).areap = (area); \
1414 (xs).beg = alloc((xs).len + X_EXTRA, (xs).areap); \
1415 (xs).end = (xs).beg + (xs).len; \
1416 } while (/* CONSTCOND */ 0)
1417 #define Xinit(xs, xp, length, area) do { \
1418 XinitN((xs), (length), (area)); \
1420 } while (/* CONSTCOND */ 0)
1422 /* stuff char into string */
1423 #define Xput(xs, xp, c) (*xp++ = (c))
1425 /* check if there are at least n bytes left */
1426 #define XcheckN(xs, xp, n) do { \
1427 ssize_t more = ((xp) + (n)) - (xs).end; \
1429 (xp) = Xcheck_grow(&(xs), (xp), (size_t)more); \
1430 } while (/* CONSTCOND */ 0)
1432 /* check for overflow, expand string */
1433 #define Xcheck(xs, xp) XcheckN((xs), (xp), 1)
1436 #define Xfree(xs, xp) afree((xs).beg, (xs).areap)
1438 /* close, return string */
1439 #define Xclose(xs, xp) aresize((xs).beg, (xp) - (xs).beg, (xs).areap)
1441 /* begin of string */
1442 #define Xstring(xs, xp) ((xs).beg)
1444 #define Xnleft(xs, xp) ((xs).end - (xp)) /* may be less than 0 */
1445 #define Xlength(xs, xp) ((xp) - (xs).beg)
1446 #define Xsize(xs, xp) ((xs).end - (xs).beg)
1447 #define Xsavepos(xs, xp) ((xp) - (xs).beg)
1448 #define Xrestpos(xs, xp, n) ((xs).beg + (n))
1450 char *Xcheck_grow(XString *, const char *, size_t);
1453 * expandable vector of generic pointers
1457 /* begin of allocated area */
1459 /* currently used number of entries */
1461 /* allocated number of entries */
1465 #define XPinit(x, n) do { \
1468 (x).beg = alloc2((x).siz, sizeof(void *), ATEMP); \
1469 } while (/* CONSTCOND */ 0) \
1471 #define XPput(x, p) do { \
1472 if ((x).len == (x).siz) { \
1473 (x).beg = aresize2((x).beg, (x).siz, \
1474 2 * sizeof(void *), ATEMP); \
1477 (x).beg[(x).len++] = (p); \
1478 } while (/* CONSTCOND */ 0)
1480 #define XPptrv(x) ((x).beg)
1481 #define XPsize(x) ((x).len)
1482 #define XPclose(x) aresize2((x).beg, XPsize(x), sizeof(void *), ATEMP)
1483 #define XPfree(x) afree((x).beg, ATEMP)
1489 typedef struct source Source;
1491 const char *str; /* input pointer */
1492 const char *start; /* start of current buffer */
1494 const char **strv; /* string [] */
1495 struct shf *shf; /* shell file */
1496 struct tbl *tblp; /* alias (SF_HASALIAS) */
1497 char *freeme; /* also for SREREAD */
1499 const char *file; /* input file name */
1500 int type; /* input type */
1501 int line; /* line number */
1502 int errline; /* line the error occurred on (0 if not set) */
1503 int flags; /* SF_* */
1505 Source *next; /* stacked source */
1506 XString xs; /* input buffer */
1507 char ugbuf[2]; /* buffer for ungetsc() (SREREAD) and
1511 /* Source.type values */
1512 #define SEOF 0 /* input EOF */
1513 #define SFILE 1 /* file input */
1514 #define SSTDIN 2 /* read stdin */
1515 #define SSTRING 3 /* string */
1516 #define SWSTR 4 /* string without \n */
1517 #define SWORDS 5 /* string[] */
1518 #define SWORDSEP 6 /* string[] separator */
1519 #define SALIAS 7 /* alias expansion */
1520 #define SREREAD 8 /* read ahead to be re-scanned */
1521 #define SSTRINGCMDLINE 9 /* string from "mksh -c ..." */
1523 /* Source.flags values */
1524 #define SF_ECHO BIT(0) /* echo input to shlout */
1525 #define SF_ALIAS BIT(1) /* faking space at end of alias */
1526 #define SF_ALIASEND BIT(2) /* faking space at end of alias */
1527 #define SF_TTY BIT(3) /* type == SSTDIN & it is a tty */
1528 #define SF_HASALIAS BIT(4) /* u.tblp valid (SALIAS, SEOF) */
1529 #define SF_MAYEXEC BIT(5) /* special sh -c optimisation hack */
1539 /* If something is added here, add it to tokentab[] in syn.c as well */
1541 #define LOGAND 257 /* && */
1542 #define LOGOR 258 /* || */
1543 #define BREAK 259 /* ;; */
1558 #define FUNCTION 274
1561 #define MDPAREN 277 /* (( )) */
1562 #define BANG 278 /* ! */
1563 #define DBRACKET 279 /* [[ .. ]] */
1564 #define COPROC 280 /* |& */
1565 #define BRKEV 281 /* ;| */
1566 #define BRKFT 282 /* ;& */
1567 #define YYERRCODE 300
1569 /* flags to yylex */
1570 #define CONTIN BIT(0) /* skip new lines to complete command */
1571 #define ONEWORD BIT(1) /* single word for substitute() */
1572 #define ALIAS BIT(2) /* recognise alias */
1573 #define KEYWORD BIT(3) /* recognise keywords */
1574 #define LETEXPR BIT(4) /* get expression inside (( )) */
1575 #define VARASN BIT(5) /* check for var=word */
1576 #define ARRAYVAR BIT(6) /* parse x[1 & 2] as one word */
1577 #define ESACONLY BIT(7) /* only accept esac keyword */
1578 #define CMDWORD BIT(8) /* parsing simple command (alias related) */
1579 #define HEREDELIM BIT(9) /* parsing <<,<<- delimiter */
1580 #define LQCHAR BIT(10) /* source string contains QCHAR */
1581 #define HEREDOC BIT(11) /* parsing a here document body */
1583 #define HERES 10 /* max number of << in line */
1586 #define CTRL(x) ((x) == '?' ? 0x7F : (x) & 0x1F) /* ASCII */
1587 #define UNCTRL(x) ((x) ^ 0x40) /* ASCII */
1588 #define ISCTRL(x) (((signed char)((uint8_t)(x) + 1)) < 33)
1592 EXTERN Source *source; /* yyparse/yylex source */
1593 EXTERN YYSTYPE yylval; /* result from yylex */
1594 EXTERN struct ioword *heres[HERES], **herep;
1595 EXTERN char ident[IDENT + 1];
1597 EXTERN char **history; /* saved commands */
1598 EXTERN char **histptr; /* last history item */
1599 EXTERN mksh_ari_t histsize; /* history size */
1601 /* user and system time of last j_waitjed job */
1602 EXTERN struct timeval j_usrtime, j_systime;
1604 #define notok2mul(max, val, c) (((val) != 0) && ((c) != 0) && \
1605 (((max) / (c)) < (val)))
1606 #define notok2add(max, val, c) ((val) > ((max) - (c)))
1607 #define notoktomul(val, cnst) notok2mul(SIZE_MAX, (val), (cnst))
1608 #define notoktoadd(val, cnst) notok2add(SIZE_MAX, (val), (cnst))
1609 #define checkoktoadd(val, cnst) do { \
1610 if (notoktoadd((val), (cnst))) \
1611 internal_errorf(Tintovfl, (size_t)(val), \
1612 '+', (size_t)(cnst)); \
1613 } while (/* CONSTCOND */ 0)
1618 void afreeall(Area *);
1619 /* these cannot fail and can take NULL (not for ap) */
1620 #define alloc(n, ap) aresize(NULL, (n), (ap))
1621 #define alloc2(m, n, ap) aresize2(NULL, (m), (n), (ap))
1622 void *aresize(void *, size_t, Area *);
1623 void *aresize2(void *, size_t, size_t, Area *);
1624 void afree(void *, Area *); /* can take NULL */
1626 #ifndef MKSH_NO_CMDLINE_EDITING
1628 int x_bind(const char *, const char *, bool, bool);
1630 int x_bind(const char *, const char *, bool);
1638 void x_mkraw(int, mksh_ttyst *, bool);
1640 char *substitute(const char *, int);
1641 char **eval(const char **, int);
1642 char *evalstr(const char *cp, int);
1643 char *evalonestr(const char *cp, int);
1644 char *debunk(char *, const char *, size_t);
1645 void expand(const char *, XPtrV *, int);
1646 int glob_str(char *, XPtrV *, bool);
1647 char *tilde(char *);
1649 int execute(struct op * volatile, volatile int, volatile int * volatile);
1650 int shcomexec(const char **);
1651 struct tbl *findfunc(const char *, uint32_t, bool);
1652 int define(const char *, struct op *);
1653 const char *builtin(const char *, int (*)(const char **));
1654 struct tbl *findcom(const char *, int);
1655 void flushcom(bool);
1656 const char *search_path(const char *, const char *, int, int *);
1657 void pr_menu(const char * const *);
1658 void pr_list(char * const *);
1660 int evaluate(const char *, mksh_ari_t *, int, bool);
1661 int v_evaluate(struct tbl *, const char *, volatile int, bool);
1663 size_t utf_mbtowc(unsigned int *, const char *);
1664 size_t utf_wctomb(char *, unsigned int);
1665 int utf_widthadj(const char *, const char **);
1666 size_t utf_mbswidth(const char *) MKSH_A_PURE;
1667 const char *utf_skipcols(const char *, int) MKSH_A_PURE;
1668 size_t utf_ptradj(const char *) MKSH_A_PURE;
1669 int utf_wcwidth(unsigned int) MKSH_A_PURE;
1670 int ksh_access(const char *, int);
1671 struct tbl *tempvar(void);
1673 int c_hash(const char **);
1674 int c_pwd(const char **);
1675 int c_print(const char **);
1676 #ifdef MKSH_PRINTF_BUILTIN
1677 int c_printf(const char **);
1679 int c_whence(const char **);
1680 int c_command(const char **);
1681 int c_typeset(const char **);
1682 int c_alias(const char **);
1683 int c_unalias(const char **);
1684 int c_let(const char **);
1685 int c_jobs(const char **);
1686 #ifndef MKSH_UNEMPLOYED
1687 int c_fgbg(const char **);
1689 int c_kill(const char **);
1690 void getopts_reset(int);
1691 int c_getopts(const char **);
1692 #ifndef MKSH_NO_CMDLINE_EDITING
1693 int c_bind(const char **);
1695 int c_shift(const char **);
1696 int c_umask(const char **);
1697 int c_dot(const char **);
1698 int c_wait(const char **);
1699 int c_read(const char **);
1700 int c_eval(const char **);
1701 int c_trap(const char **);
1702 int c_brkcont(const char **);
1703 int c_exitreturn(const char **);
1704 int c_set(const char **);
1705 int c_unset(const char **);
1706 int c_ulimit(const char **);
1707 int c_times(const char **);
1708 int timex(struct op *, int, volatile int *);
1709 void timex_hook(struct op *, char ** volatile *);
1710 int c_exec(const char **);
1711 /* dummy function (just need pointer value), special case in comexec() */
1712 #define c_builtin shcomexec
1713 int c_test(const char **);
1715 int c_mknod(const char **);
1717 int c_realpath(const char **);
1718 int c_rename(const char **);
1719 int c_cat(const char **);
1720 int c_sleep(const char **);
1722 void init_histvec(void);
1723 void hist_init(Source *);
1724 #if HAVE_PERSISTENT_HISTORY
1725 void hist_finish(void);
1727 void histsave(int *, const char *, bool, bool);
1728 #if !defined(MKSH_SMALL) && HAVE_PERSISTENT_HISTORY
1729 bool histsync(void);
1731 int c_fc(const char **);
1732 void sethistsize(mksh_ari_t);
1733 #if HAVE_PERSISTENT_HISTORY
1734 void sethistfile(const char *);
1736 #if !defined(MKSH_NO_CMDLINE_EDITING) && !MKSH_S_NOVI
1737 char **histpos(void) MKSH_A_PURE;
1740 int findhist(int, int, const char *, bool) MKSH_A_PURE;
1741 char **hist_get_newest(bool);
1742 void inittraps(void);
1743 void alarm_init(void);
1744 Trap *gettrap(const char *, bool);
1746 void intrcheck(void);
1747 int fatal_trap_check(void);
1748 int trap_pending(void);
1749 void runtraps(int intr);
1750 void runtrap(Trap *, bool);
1751 void cleartraps(void);
1752 void restoresigs(void);
1753 void settrap(Trap *, const char *);
1754 int block_pipe(void);
1755 void restore_pipe(int);
1756 int setsig(Trap *, sig_t, int);
1757 void setexecsig(Trap *, int);
1758 #if HAVE_FLOCK || HAVE_LOCK_FCNTL
1759 void mksh_lockfd(int);
1760 void mksh_unlkfd(int);
1765 #ifndef MKSH_UNEMPLOYED
1766 void j_change(void);
1768 int exchild(struct op *, int, volatile int *, int);
1769 void startlast(void);
1771 int waitfor(const char *, int *);
1772 int j_kill(const char *, int);
1773 #ifndef MKSH_UNEMPLOYED
1774 int j_resume(const char *, int);
1776 #if !defined(MKSH_UNEMPLOYED) && HAVE_GETSID
1777 void j_suspend(void);
1779 int j_jobs(const char *, int, int);
1780 void j_notify(void);
1781 pid_t j_async(void);
1782 int j_stopped_running(void);
1785 void yyskiputf8bom(void);
1786 void yyerror(const char *, ...)
1788 MKSH_A_FORMAT(__printf__, 1, 2);
1789 Source *pushs(int, Area *);
1790 void set_prompt(int, Source *);
1791 int pprompt(const char *, int);
1793 int include(const char *, int, const char **, bool);
1794 int command(const char *, int);
1795 int shell(Source * volatile, volatile bool);
1796 /* argument MUST NOT be 0 */
1797 void unwind(int) MKSH_A_NORETURN;
1799 void quitenv(struct shf *);
1800 void cleanup_parents_env(void);
1801 void cleanup_proc_env(void);
1802 void errorf(const char *, ...)
1804 MKSH_A_FORMAT(__printf__, 1, 2);
1805 void errorfx(int, const char *, ...)
1807 MKSH_A_FORMAT(__printf__, 2, 3);
1808 void warningf(bool, const char *, ...)
1809 MKSH_A_FORMAT(__printf__, 2, 3);
1810 void bi_errorf(const char *, ...)
1811 MKSH_A_FORMAT(__printf__, 1, 2);
1812 #define errorfz() errorf(NULL)
1813 #define errorfxz(rc) errorfx((rc), NULL)
1814 #define bi_errorfz() bi_errorf(NULL)
1815 void internal_errorf(const char *, ...)
1817 MKSH_A_FORMAT(__printf__, 1, 2);
1818 void internal_warningf(const char *, ...)
1819 MKSH_A_FORMAT(__printf__, 1, 2);
1820 void error_prefix(bool);
1821 void shellf(const char *, ...)
1822 MKSH_A_FORMAT(__printf__, 1, 2);
1823 void shprintf(const char *, ...)
1824 MKSH_A_FORMAT(__printf__, 1, 2);
1827 int ksh_dup2(int, int, bool);
1829 void restfd(int, int);
1830 void openpipe(int *);
1831 void closepipe(int *);
1832 int check_fd(const char *, int, const char **);
1833 void coproc_init(void);
1834 void coproc_read_close(int);
1835 void coproc_readw_close(int);
1836 void coproc_write_close(int);
1837 int coproc_getfd(int, const char **);
1838 void coproc_cleanup(int);
1839 struct temp *maketemp(Area *, Temp_type, struct temp **);
1840 void ktinit(Area *, struct table *, uint8_t);
1841 struct tbl *ktscan(struct table *, const char *, uint32_t, struct tbl ***);
1842 /* table, name (key) to search for, hash(n) */
1843 #define ktsearch(tp, s, h) ktscan((tp), (s), (h), NULL)
1844 struct tbl *ktenter(struct table *, const char *, uint32_t);
1845 #define ktdelete(p) do { p->flag = 0; } while (/* CONSTCOND */ 0)
1846 void ktwalk(struct tstate *, struct table *);
1847 struct tbl *ktnext(struct tstate *);
1848 struct tbl **ktsort(struct table *);
1850 void DF(const char *, ...)
1851 MKSH_A_FORMAT(__printf__, 1, 2);
1854 void setctypes(const char *, int);
1855 void initctypes(void);
1856 size_t option(const char *) MKSH_A_PURE;
1857 char *getoptions(void);
1858 void change_flag(enum sh_flag, int, bool);
1859 void change_xtrace(unsigned char, bool);
1860 int parse_args(const char **, int, bool *);
1861 int getn(const char *, int *);
1862 int gmatchx(const char *, const char *, bool);
1863 int has_globbing(const char *, const char *) MKSH_A_PURE;
1864 int xstrcmp(const void *, const void *) MKSH_A_PURE;
1865 void ksh_getopt_reset(Getopt *, int);
1866 int ksh_getopt(const char **, Getopt *, const char *);
1867 void print_value_quoted(struct shf *, const char *);
1868 char *quote_value(const char *);
1869 void print_columns(struct shf *, unsigned int,
1870 char *(*)(char *, size_t, unsigned int, const void *),
1871 const void *, size_t, size_t, bool);
1872 void strip_nuls(char *, int);
1873 ssize_t blocking_read(int, char *, size_t)
1874 MKSH_A_BOUNDED(__buffer__, 2, 3);
1875 int reset_nonblock(int);
1876 char *ksh_get_wd(void);
1877 char *do_realpath(const char *);
1878 void simplify_path(char *);
1879 void set_current_wd(const char *);
1880 int c_cd(const char **);
1881 #if defined(MKSH_SMALL) && !defined(MKSH_SMALL_BUT_FAST)
1882 char *strdup_i(const char *, Area *);
1883 char *strndup_i(const char *, size_t, Area *);
1885 int unbksl(bool, int (*)(void), void (*)(int));
1887 struct shf *shf_open(const char *, int, int, int);
1888 struct shf *shf_fdopen(int, int, struct shf *);
1889 struct shf *shf_reopen(int, int, struct shf *);
1890 struct shf *shf_sopen(char *, ssize_t, int, struct shf *);
1891 int shf_close(struct shf *);
1892 int shf_fdclose(struct shf *);
1893 char *shf_sclose(struct shf *);
1894 int shf_flush(struct shf *);
1895 ssize_t shf_read(char *, ssize_t, struct shf *);
1896 char *shf_getse(char *, ssize_t, struct shf *);
1897 int shf_getchar(struct shf *s);
1898 int shf_ungetc(int, struct shf *);
1899 #if defined(MKSH_SMALL) && !defined(MKSH_SMALL_BUT_FAST)
1900 int shf_getc(struct shf *);
1901 int shf_putc(int, struct shf *);
1903 #define shf_getc shf_getc_i
1904 #define shf_putc shf_putc_i
1906 int shf_putchar(int, struct shf *);
1907 ssize_t shf_puts(const char *, struct shf *);
1908 ssize_t shf_write(const char *, ssize_t, struct shf *);
1909 ssize_t shf_fprintf(struct shf *, const char *, ...)
1910 MKSH_A_FORMAT(__printf__, 2, 3);
1911 ssize_t shf_snprintf(char *, ssize_t, const char *, ...)
1912 MKSH_A_FORMAT(__printf__, 3, 4)
1913 MKSH_A_BOUNDED(__string__, 1, 2);
1914 char *shf_smprintf(const char *, ...)
1915 MKSH_A_FORMAT(__printf__, 1, 2);
1916 ssize_t shf_vfprintf(struct shf *, const char *, va_list)
1917 MKSH_A_FORMAT(__printf__, 2, 0);
1919 void initkeywords(void);
1920 struct op *compile(Source *, bool);
1921 bool parse_usec(const char *, struct timeval *);
1922 char *yyrecursive(int);
1923 void yyrecursive_pop(bool);
1925 void fptreef(struct shf *, int, const char *, ...);
1926 char *snptreef(char *, ssize_t, const char *, ...);
1927 struct op *tcopy(struct op *, Area *);
1928 char *wdcopy(const char *, Area *);
1929 const char *wdscan(const char *, int);
1930 #define WDS_TPUTS BIT(0) /* tputS (dumpwdvar) mode */
1931 #define WDS_KEEPQ BIT(1) /* keep quote characters */
1932 #define WDS_MAGIC BIT(2) /* make MAGIC */
1933 char *wdstrip(const char *, int);
1934 void tfree(struct op *, Area *);
1935 void dumpchar(struct shf *, int);
1936 void dumptree(struct shf *, struct op *);
1937 void dumpwdvar(struct shf *, const char *);
1938 void dumpioact(struct shf *shf, struct op *t);
1939 void vistree(char *, size_t, struct op *)
1940 MKSH_A_BOUNDED(__string__, 1, 2);
1941 void fpFUNCTf(struct shf *, int, bool, const char *, struct op *);
1943 void newblock(void);
1944 void popblock(void);
1946 struct block *varsearch(struct block *, struct tbl **, const char *, uint32_t);
1947 struct tbl *global(const char *);
1948 struct tbl *local(const char *, bool);
1949 char *str_val(struct tbl *);
1950 int setstr(struct tbl *, const char *, int);
1951 struct tbl *setint_v(struct tbl *, struct tbl *, bool);
1952 void setint(struct tbl *, mksh_ari_t);
1953 void setint_n(struct tbl *, mksh_ari_t, int);
1954 struct tbl *typeset(const char *, uint32_t, uint32_t, int, int);
1955 void unset(struct tbl *, int);
1956 const char *skip_varname(const char *, bool) MKSH_A_PURE;
1957 const char *skip_wdvarname(const char *, bool) MKSH_A_PURE;
1958 int is_wdvarname(const char *, bool) MKSH_A_PURE;
1959 int is_wdvarassign(const char *) MKSH_A_PURE;
1960 struct tbl *arraysearch(struct tbl *, uint32_t);
1961 char **makenv(void);
1962 void change_winsz(void);
1963 size_t array_ref_len(const char *) MKSH_A_PURE;
1964 char *arrayname(const char *);
1965 mksh_uari_t set_array(const char *, bool, const char **);
1966 uint32_t hash(const void *) MKSH_A_PURE;
1967 uint32_t chvt_rndsetup(const void *, size_t) MKSH_A_PURE;
1968 mksh_ari_t rndget(void);
1969 void rndset(unsigned long);
1970 void rndpush(const void *);
1975 /* unary operators */
1976 TO_STNZE, TO_STZER, TO_OPTION,
1979 TO_FILREG, TO_FILBDEV, TO_FILCDEV, TO_FILSYM, TO_FILFIFO, TO_FILSOCK,
1980 TO_FILCDF, TO_FILID, TO_FILGID, TO_FILSETG, TO_FILSTCK, TO_FILUID,
1981 TO_FILRD, TO_FILGZ, TO_FILTT, TO_FILSETU, TO_FILWR, TO_FILEX,
1982 /* binary operators */
1983 TO_STEQL, TO_STNEQ, TO_STLT, TO_STGT, TO_INTEQ, TO_INTNE, TO_INTGT,
1984 TO_INTGE, TO_INTLT, TO_INTLE, TO_FILEQ, TO_FILNT, TO_FILOT,
1985 /* not an operator */
1986 TO_NONNULL /* !TO_NONOP */
1988 typedef enum Test_op Test_op;
1990 /* Used by Test_env.isa() (order important - used to index *_tokens[] arrays) */
1992 TM_OR, /* -o or || */
1993 TM_AND, /* -a or && */
1997 TM_UNOP, /* unary operator */
1998 TM_BINOP, /* binary operator */
1999 TM_END /* end of input */
2001 typedef enum Test_meta Test_meta;
2003 #define TEF_ERROR BIT(0) /* set if we've hit an error */
2004 #define TEF_DBRACKET BIT(1) /* set if [[ .. ]] test */
2006 typedef struct test_env {
2008 const char **wp; /* used by ptest_* */
2009 XPtrV *av; /* used by dbtestp_* */
2011 const char **wp_end; /* used by ptest_* */
2012 Test_op (*isa)(struct test_env *, Test_meta);
2013 const char *(*getopnd) (struct test_env *, Test_op, bool);
2014 int (*eval)(struct test_env *, Test_op, const char *, const char *, bool);
2015 void (*error)(struct test_env *, int, const char *);
2016 int flags; /* TEF_* */
2019 extern const char * const dbtest_tokens[];
2021 Test_op test_isop(Test_meta, const char *) MKSH_A_PURE;
2022 int test_eval(Test_env *, Test_op, const char *, const char *, bool);
2023 int test_parse(Test_env *);
2025 /* tty_fd is not opened O_BINARY, it's thus never read/written */
2026 EXTERN int tty_fd E_INIT(-1); /* dup'd tty file descriptor */
2027 EXTERN bool tty_devtty; /* true if tty_fd is from /dev/tty */
2028 EXTERN mksh_ttyst tty_state; /* saved tty state */
2029 EXTERN bool tty_hasstate; /* true if tty_state is valid */
2031 extern int tty_init_fd(void); /* initialise tty_fd, tty_devtty */
2033 /* be sure not to interfere with anyone else's idea about EXTERN */
2034 #ifdef EXTERN_DEFINED
2035 # undef EXTERN_DEFINED
2040 #endif /* !MKSH_INCLUDES_ONLY */