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, 2015
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>
101 /* XXX imake style */
102 #include <sys/sioctl.h>
113 #if HAVE_ATTRIBUTE_BOUNDED
114 #define MKSH_A_BOUNDED(x,y,z) __attribute__((__bounded__(x, y, z)))
116 #define MKSH_A_BOUNDED(x,y,z) /* nothing */
118 #if HAVE_ATTRIBUTE_FORMAT
119 #define MKSH_A_FORMAT(x,y,z) __attribute__((__format__(x, y, z)))
121 #define MKSH_A_FORMAT(x,y,z) /* nothing */
123 #if HAVE_ATTRIBUTE_NORETURN
124 #define MKSH_A_NORETURN __attribute__((__noreturn__))
126 #define MKSH_A_NORETURN /* nothing */
128 #if HAVE_ATTRIBUTE_PURE
129 #define MKSH_A_PURE __attribute__((__pure__))
131 #define MKSH_A_PURE /* nothing */
133 #if HAVE_ATTRIBUTE_UNUSED
134 #define MKSH_A_UNUSED __attribute__((__unused__))
136 #define MKSH_A_UNUSED /* nothing */
138 #if HAVE_ATTRIBUTE_USED
139 #define MKSH_A_USED __attribute__((__used__))
141 #define MKSH_A_USED /* nothing */
144 #if defined(MirBSD) && (MirBSD >= 0x09A1) && \
145 defined(__ELF__) && defined(__GNUC__) && \
146 !defined(__llvm__) && !defined(__NWCC__)
148 * We got usable __IDSTRING __COPYRIGHT __RCSID __SCCSID macros
149 * which work for all cases; no need to redefine them using the
150 * "portable" macros from below when we might have the "better"
151 * gcc+ELF specific macros or other system dependent ones.
155 #undef __IDSTRING_CONCAT
156 #undef __IDSTRING_EXPAND
160 #define __IDSTRING_CONCAT(l,p) __LINTED__ ## l ## _ ## p
161 #define __IDSTRING_EXPAND(l,p) __IDSTRING_CONCAT(l,p)
162 #ifdef MKSH_DONT_EMIT_IDSTRING
163 #define __IDSTRING(prefix, string) /* nothing */
165 #define __IDSTRING(prefix, string) \
166 static const char __IDSTRING_EXPAND(__LINE__,prefix) [] \
167 MKSH_A_USED = "@(""#)" #prefix ": " string
169 #define __COPYRIGHT(x) __IDSTRING(copyright,x)
170 #define __RCSID(x) __IDSTRING(rcsid,x)
171 #define __SCCSID(x) __IDSTRING(sccsid,x)
175 __RCSID("$MirOS: src/bin/mksh/sh.h,v 1.739 2015/07/10 19:36:37 tg Exp $");
177 #define MKSH_VERSION "R51 2015/07/10"
179 /* arithmetic types: C implementation */
180 #if !HAVE_CAN_INTTYPES
181 #if !HAVE_CAN_UCBINTS
182 typedef signed int int32_t;
183 typedef unsigned int uint32_t;
185 typedef u_int32_t uint32_t;
189 /* arithmetic types: shell arithmetics */
190 #ifdef MKSH_LEGACY_MODE
192 * POSIX demands these to be the C environment's long type
194 typedef long mksh_ari_t;
195 typedef unsigned long mksh_uari_t;
198 * These types are exactly 32 bit wide; signed and unsigned
199 * integer wraparound, even across division and modulo, for
200 * any shell code using them, is guaranteed.
202 typedef int32_t mksh_ari_t;
203 typedef uint32_t mksh_uari_t;
206 /* boolean type (no <stdbool.h> deliberately) */
207 typedef unsigned char mksh_bool;
209 /* false MUST equal the same 0 as written by static storage initialisation */
212 /* access macros for boolean type */
213 #define bool mksh_bool
214 /* values must have identity mapping between mksh_bool and short */
217 /* make any-type into bool or short */
218 #define tobool(cond) ((cond) ? true : false)
220 /* char (octet) type: C implementation */
221 #if !HAVE_CAN_INT8TYPE
222 #if !HAVE_CAN_UCBINT8
223 typedef unsigned char uint8_t;
225 typedef u_int8_t uint8_t;
229 /* other standard types */
232 typedef unsigned long rlim_t;
237 typedef void (*sig_t)(int);
240 #ifdef MKSH_TYPEDEF_SIG_ATOMIC_T
241 typedef MKSH_TYPEDEF_SIG_ATOMIC_T sig_atomic_t;
244 #ifdef MKSH_TYPEDEF_SSIZE_T
245 typedef MKSH_TYPEDEF_SSIZE_T ssize_t;
248 /* un-do vendor damage */
250 #undef BAD /* AIX defines that somewhere */
251 #undef PRINT /* LynxOS defines that somewhere */
252 #undef flock /* SCO UnixWare defines that to flock64 but ENOENT */
255 #ifndef MKSH_INCLUDES_ONLY
259 /* getrusage does not exist on OS/2 kLIBC */
260 #if !HAVE_GETRUSAGE && !defined(__OS2__)
263 #undef RUSAGE_CHILDREN
264 #define rusage mksh_rusage
265 #define RUSAGE_SELF 0
266 #define RUSAGE_CHILDREN -1
269 struct timeval ru_utime;
270 struct timeval ru_stime;
277 #define timerclear(tvp) \
279 (tvp)->tv_sec = (tvp)->tv_usec = 0; \
280 } while (/* CONSTCOND */ 0)
283 #define timeradd(tvp, uvp, vvp) \
285 (vvp)->tv_sec = (tvp)->tv_sec + (uvp)->tv_sec; \
286 (vvp)->tv_usec = (tvp)->tv_usec + (uvp)->tv_usec; \
287 if ((vvp)->tv_usec >= 1000000) { \
289 (vvp)->tv_usec -= 1000000; \
291 } while (/* CONSTCOND */ 0)
294 #define timersub(tvp, uvp, vvp) \
296 (vvp)->tv_sec = (tvp)->tv_sec - (uvp)->tv_sec; \
297 (vvp)->tv_usec = (tvp)->tv_usec - (uvp)->tv_usec; \
298 if ((vvp)->tv_usec < 0) { \
300 (vvp)->tv_usec += 1000000; \
302 } while (/* CONSTCOND */ 0)
305 #ifdef MKSH__NO_PATH_MAX
310 #define PATH_MAX MAXPATHLEN
312 #define PATH_MAX 1024
318 #define SIZE_MAX SIZE_T_MAX
320 #define SIZE_MAX ((size_t)-1)
324 #define S_ISLNK(m) ((m & 0170000) == 0120000)
327 #define S_ISSOCK(m) ((m & 0170000) == 0140000)
329 #if !defined(S_ISCDF) && defined(S_CDF)
330 #define S_ISCDF(m) (S_ISDIR(m) && ((m) & S_CDF))
333 #define DEFFILEMODE (S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP|S_IROTH|S_IWOTH)
337 /* determine ksh_NSIG: first, use the traditional definitions */
340 #define ksh_NSIG NSIG
342 #define ksh_NSIG _NSIG
343 #elif defined(SIGMAX)
344 #define ksh_NSIG (SIGMAX + 1)
345 #elif defined(_SIGMAX)
346 #define ksh_NSIG (_SIGMAX + 1)
347 #elif defined(NSIG_MAX)
348 #define ksh_NSIG NSIG_MAX
350 # error Please have your platform define NSIG.
352 /* range-check them */
354 # error Your NSIG value is not positive.
357 /* second, see if the new POSIX definition is available */
361 # error Your NSIG_MAX value is too small.
363 #elif (ksh_NSIG > NSIG_MAX)
365 # error Your NSIG value is larger than your NSIG_MAX value.
368 /* since it’s usable, prefer it */
370 #define ksh_NSIG NSIG_MAX
372 /* if NSIG_MAX is now still defined, use sysconf(_SC_NSIG) at runtime */
374 /* third, for cpp without the error directive, default */
380 /* OS-dependent additions (functions, variables, by OS) */
384 #define MKSH_EXE_EXT ".exe"
386 #define MKSH_EXE_EXT ""
390 #define MKSH_PATHSEPS ";"
391 #define MKSH_PATHSEPC ';'
392 #define MKSH_UNIXROOT "/@unixroot"
394 #define MKSH_PATHSEPS ":"
395 #define MKSH_PATHSEPC ':'
396 #define MKSH_UNIXROOT ""
400 extern int flock(int, int);
403 #if !HAVE_GETTIMEOFDAY
404 #define mksh_TIME(tv) do { \
406 (tv).tv_sec = time(NULL); \
407 } while (/* CONSTCOND */ 0)
409 #define mksh_TIME(tv) gettimeofday(&(tv), NULL)
413 extern int getrusage(int, struct rusage *);
417 /* we assume either memmove or bcopy exist, at the moment */
418 #define memmove(dst, src, len) bcopy((src), (dst), (len))
421 #if !HAVE_REVOKE_DECL
422 extern int revoke(const char *);
425 #if defined(DEBUG) || !HAVE_STRERROR
427 #define strerror /* poisoned */ dontuse_strerror
428 #define cstrerror /* replaced */ cstrerror
429 extern const char *cstrerror(int);
431 #define cstrerror(errnum) ((const char *)strerror(errnum))
435 size_t strlcpy(char *, const char *, size_t);
439 /* XXX imake style */
440 #define makedev mkdev
441 extern int __cdecl seteuid(uid_t);
442 extern int __cdecl setegid(gid_t);
445 #if defined(__COHERENT__)
447 /* this need not work everywhere, take care */
448 #define O_ACCMODE (O_RDONLY | O_WRONLY | O_RDWR)
456 #ifdef MKSH__NO_SYMLINK
458 #define S_ISLNK(m) (/* CONSTCOND */ 0)
459 #define mksh_lstat stat
461 #define mksh_lstat lstat
465 #define mksh_ttyst struct termios
466 #define mksh_tcget(fd,st) tcgetattr((fd), (st))
467 #define mksh_tcset(fd,st) tcsetattr((fd), TCSADRAIN, (st))
469 #define mksh_ttyst struct termio
470 #define mksh_tcget(fd,st) ioctl((fd), TCGETA, (st))
471 #define mksh_tcset(fd,st) ioctl((fd), TCSETAW, (st))
479 /* some useful #defines */
481 # define E_INIT(i) = i
484 # define EXTERN extern
485 # define EXTERN_DEFINED
488 /* define bit in flag */
489 #define BIT(i) (1 << (i))
490 #define NELEM(a) (sizeof(a) / sizeof((a)[0]))
493 * Make MAGIC a char that might be printed to make bugs more obvious, but
494 * not a char that is used often. Also, can't use the high bit as it causes
495 * portability problems (calling strchr(x, 0x80 | 'x') is error prone).
497 #define MAGIC (7) /* prefix for *?[!{,} during expand */
498 #define ISMAGIC(c) ((unsigned char)(c) == MAGIC)
500 EXTERN const char *safe_prompt; /* safe prompt if PS1 substitution fails */
502 #ifdef MKSH_LEGACY_MODE
503 #define KSH_VERSIONNAME "LEGACY"
505 #define KSH_VERSIONNAME "MIRBSD"
507 EXTERN const char initvsn[] E_INIT("KSH_VERSION=@(#)" KSH_VERSIONNAME \
508 " KSH " MKSH_VERSION);
509 #define KSH_VERSION (initvsn + /* "KSH_VERSION=@(#)" */ 16)
511 EXTERN const char digits_uc[] E_INIT("0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ");
512 EXTERN const char digits_lc[] E_INIT("0123456789abcdefghijklmnopqrstuvwxyz");
513 #define letters_uc (digits_uc + 10)
514 #define letters_lc (digits_lc + 10)
517 * Evil hack for const correctness due to API brokenness
529 * Evil hack since casting uint to sint is implementation-defined
536 /* for const debugging */
537 #if defined(DEBUG) && defined(__GNUC__) && !defined(__ICC) && \
538 !defined(__INTEL_COMPILER) && !defined(__SUNPRO_C)
539 char *ucstrchr(char *, int);
540 char *ucstrstr(char *, const char *);
542 #define strchr ucstrchr
543 #define strstr ucstrstr
544 #define cstrchr(s,c) ({ \
545 union mksh_cchack in, out; \
548 out.rw = ucstrchr(in.rw, (c)); \
551 #define cstrstr(b,l) ({ \
552 union mksh_cchack in, out; \
555 out.rw = ucstrstr(in.rw, (l)); \
558 #define vstrchr(s,c) (cstrchr((s), (c)) != NULL)
559 #define vstrstr(b,l) (cstrstr((b), (l)) != NULL)
560 #else /* !DEBUG, !gcc */
561 #define cstrchr(s,c) ((const char *)strchr((s), (c)))
562 #define cstrstr(s,c) ((const char *)strstr((s), (c)))
563 #define vstrchr(s,c) (strchr((s), (c)) != NULL)
564 #define vstrstr(b,l) (strstr((b), (l)) != NULL)
567 #if defined(DEBUG) || defined(__COVERITY__)
568 #define mkssert(e) do { if (!(e)) exit(255); } while (/* CONSTCOND */ 0)
573 #define mkssert(e) do { } while (/* CONSTCOND */ 0)
576 #if (!defined(MKSH_BUILDMAKEFILE4BSD) && !defined(MKSH_BUILDSH)) || (MKSH_BUILD_R != 511)
577 #error Must run Build.sh to compile this.
578 extern void thiswillneverbedefinedIhope(void);
582 /* I’m sorry, Dave. I’m afraid I can’t do that. */
583 return (thiswillneverbedefinedIhope());
587 /* use this ipv strchr(s, 0) but no side effects in s! */
588 #define strnul(s) ((s) + strlen(s))
590 #define utf_ptradjx(src, dst) do { \
591 (dst) = (src) + utf_ptradj(src); \
592 } while (/* CONSTCOND */ 0)
594 #if defined(MKSH_SMALL) && !defined(MKSH_SMALL_BUT_FAST)
595 #define strdupx(d, s, ap) do { \
596 (d) = strdup_i((s), (ap)); \
597 } while (/* CONSTCOND */ 0)
598 #define strndupx(d, s, n, ap) do { \
599 (d) = strndup_i((s), (n), (ap)); \
600 } while (/* CONSTCOND */ 0)
602 /* be careful to evaluate arguments only once! */
603 #define strdupx(d, s, ap) do { \
604 const char *strdup_src = (s); \
605 char *strdup_dst = NULL; \
607 if (strdup_src != NULL) { \
608 size_t strdup_len = strlen(strdup_src) + 1; \
609 strdup_dst = alloc(strdup_len, (ap)); \
610 memcpy(strdup_dst, strdup_src, strdup_len); \
613 } while (/* CONSTCOND */ 0)
614 #define strndupx(d, s, n, ap) do { \
615 const char *strdup_src = (s); \
616 char *strdup_dst = NULL; \
618 if (strdup_src != NULL) { \
619 size_t strndup_len = (n); \
620 strdup_dst = alloc(strndup_len + 1, (ap)); \
621 memcpy(strdup_dst, strdup_src, strndup_len); \
622 strdup_dst[strndup_len] = '\0'; \
625 } while (/* CONSTCOND */ 0)
628 #ifdef MKSH_LEGACY_MODE
629 #ifndef MKSH_NO_CMDLINE_EDITING
630 #define MKSH_NO_CMDLINE_EDITING /* defined */
632 #ifndef MKSH_CONSERVATIVE_FDS
633 #define MKSH_CONSERVATIVE_FDS /* defined */
636 #define MKSH_S_NOVI 1
640 #ifndef MKSH_CONSERVATIVE_FDS
641 #define MKSH_CONSERVATIVE_FDS /* defined */
644 #define MKSH_NOPWNAM /* defined */
647 #define MKSH_S_NOVI 1
652 #define MKSH_S_NOVI 0
655 #if defined(MKSH_NOPROSPECTOFWORK) && !defined(MKSH_UNEMPLOYED)
656 #define MKSH_UNEMPLOYED 1
659 /* these shall be smaller than 100 */
660 #ifdef MKSH_CONSERVATIVE_FDS
661 #define NUFILE 32 /* Number of user-accessible files */
662 #define FDBASE 10 /* First file usable by Shell */
664 #define NUFILE 56 /* Number of user-accessible files */
665 #define FDBASE 24 /* First file usable by Shell */
669 * simple grouping allocator
673 /* 0. OS API: where to get memory from and how to free it (grouped) */
675 /* malloc(3)/realloc(3) -> free(3) for use by the memory allocator */
676 #define malloc_osi(sz) malloc(sz)
677 #define realloc_osi(p,sz) realloc((p), (sz))
678 #define free_osimalloc(p) free(p)
680 /* malloc(3)/realloc(3) -> free(3) for use by mksh code */
681 #define malloc_osfunc(sz) malloc(sz)
682 #define realloc_osfunc(p,sz) realloc((p), (sz))
683 #define free_osfunc(p) free(p)
686 /* setmode(3) -> free(3) */
687 #define free_ossetmode(p) free(p)
690 #ifdef MKSH__NO_PATH_MAX
691 /* GNU libc: get_current_dir_name(3) -> free(3) */
692 #define free_gnu_gcdn(p) free(p)
696 /* 1. internal structure */
702 #define ALLOC_ITEM struct lalloc
703 #define ALLOC_SIZE (sizeof(ALLOC_ITEM))
705 /* 3. group structure (only the same for lalloc.c) */
706 typedef struct lalloc Area;
709 EXTERN Area aperm; /* permanent object space */
711 #define ATEMP &e->area
714 * flags (the order of these enums MUST match the order in misc.c(options[]))
717 #define SHFLAGS_ENUMS
718 #include "sh_flags.gen"
719 FNFLAGS /* (place holder: how many flags are there) */
722 #define Flag(f) (shell_flags[(int)(f)])
723 #define UTFMODE Flag(FUNICODE)
726 * parsing & execution environment
728 * note that kshlongjmp MUST NOT be passed 0 as second argument!
730 #ifdef MKSH_NO_SIGSETJMP
731 #define kshjmp_buf jmp_buf
732 #define kshsetjmp(jbuf) _setjmp(jbuf)
733 #define kshlongjmp _longjmp
735 #define kshjmp_buf sigjmp_buf
736 #define kshsetjmp(jbuf) sigsetjmp((jbuf), 0)
737 #define kshlongjmp siglongjmp
740 struct sretrace_info;
741 struct yyrecursive_state;
743 EXTERN struct sretrace_info *retrace_info E_INIT(NULL);
744 EXTERN int subshell_nesting_type E_INIT(0);
747 ALLOC_ITEM alloc_INT; /* internal, do not touch */
748 Area area; /* temporary allocation area */
749 struct env *oenv; /* link to previous environment */
750 struct block *loc; /* local variables and functions */
751 short *savefd; /* original redirected fds */
752 struct temp *temps; /* temp files */
753 /* saved parser recursion state */
754 struct yyrecursive_state *yyrecursive_statep;
755 kshjmp_buf jbuf; /* long jump back to env creator */
756 uint8_t type; /* environment type - see below */
757 uint8_t flags; /* EF_* */
760 /* struct env.type values */
761 #define E_NONE 0 /* dummy environment */
762 #define E_PARSE 1 /* parsing command # */
763 #define E_FUNC 2 /* executing function # */
764 #define E_INCL 3 /* including a file via . # */
765 #define E_EXEC 4 /* executing command tree */
766 #define E_LOOP 5 /* executing for/while # */
767 #define E_ERRH 6 /* general error handler # */
768 #define E_GONE 7 /* hidden in child */
769 /* # indicates env has valid jbuf (see unwind()) */
771 /* struct env.flag values */
772 #define EF_BRKCONT_PASS BIT(1) /* set if E_LOOP must pass break/continue on */
773 #define EF_FAKE_SIGDIE BIT(2) /* hack to get info from unwind to quitenv */
775 /* Do breaks/continues stop at env type e? */
776 #define STOP_BRKCONT(t) ((t) == E_NONE || (t) == E_PARSE || \
777 (t) == E_FUNC || (t) == E_INCL)
778 /* Do returns stop at env type e? */
779 #define STOP_RETURN(t) ((t) == E_FUNC || (t) == E_INCL)
781 /* values for kshlongjmp(e->jbuf, i) */
782 /* note that i MUST NOT be zero */
783 #define LRETURN 1 /* return statement */
784 #define LEXIT 2 /* exit statement */
785 #define LERROR 3 /* errorf() called */
786 #define LLEAVE 4 /* untrappable exit/error */
787 #define LINTR 5 /* ^C noticed */
788 #define LBREAK 6 /* break statement */
789 #define LCONTIN 7 /* continue statement */
790 #define LSHELL 8 /* return to interactive shell() */
791 #define LAEXPR 9 /* error in arithmetic expression */
793 /* sort of shell global state */
794 EXTERN pid_t procpid; /* PID of executing process */
795 EXTERN int exstat; /* exit status */
796 EXTERN int subst_exstat; /* exit status of last $(..)/`..` */
797 EXTERN struct tbl *vp_pipest; /* global PIPESTATUS array */
798 EXTERN short trap_exstat; /* exit status before running a trap */
799 EXTERN uint8_t trap_nested; /* running nested traps */
800 EXTERN uint8_t shell_flags[FNFLAGS];
801 EXTERN const char *kshname; /* $0 */
803 uid_t kshuid_v; /* real UID of shell */
804 uid_t ksheuid_v; /* effective UID of shell */
805 gid_t kshgid_v; /* real GID of shell */
806 gid_t kshegid_v; /* effective GID of shell */
807 pid_t kshpgrp_v; /* process group of shell */
808 pid_t kshppid_v; /* PID of parent of shell */
809 pid_t kshpid_v; /* $$, shell PID */
812 #define kshpid rndsetupstate.kshpid_v
813 #define kshpgrp rndsetupstate.kshpgrp_v
814 #define kshuid rndsetupstate.kshuid_v
815 #define ksheuid rndsetupstate.ksheuid_v
816 #define kshgid rndsetupstate.kshgid_v
817 #define kshegid rndsetupstate.kshegid_v
818 #define kshppid rndsetupstate.kshppid_v
821 /* option processing */
822 #define OF_CMDLINE 0x01 /* command line */
823 #define OF_SET 0x02 /* set builtin */
824 #define OF_SPECIAL 0x04 /* a special variable changing */
825 #define OF_INTERNAL 0x08 /* set internally by shell */
826 #define OF_FIRSTTIME 0x10 /* as early as possible, once */
827 #define OF_ANY (OF_CMDLINE | OF_SET | OF_SPECIAL | OF_INTERNAL)
829 /* null value for variable; comparison pointer for unset */
830 EXTERN char null[] E_INIT("");
831 /* helpers for string pooling */
832 EXTERN const char Tintovfl[] E_INIT("integer overflow %zu %c %zu prevented");
833 EXTERN const char Toomem[] E_INIT("can't allocate %zu data bytes");
834 #if defined(__GNUC__)
835 /* trust this to have string pooling; -Wformat bitches otherwise */
836 #define Tsynerr "syntax error"
838 EXTERN const char Tsynerr[] E_INIT("syntax error");
840 EXTERN const char Tselect[] E_INIT("select");
841 EXTERN const char T_typeset[] E_INIT("=typeset");
842 #define Ttypeset (T_typeset + 1) /* "typeset" */
843 EXTERN const char Talias[] E_INIT("alias");
844 EXTERN const char Tunalias[] E_INIT("unalias");
845 EXTERN const char Tcat[] E_INIT("cat");
847 EXTERN const char Textproc[] E_INIT("extproc");
849 #ifdef MKSH_PRINTF_BUILTIN
850 EXTERN const char Tprintf[] E_INIT("printf");
852 EXTERN const char Tsgset[] E_INIT("*=set");
853 #define Tset (Tsgset + 2) /* "set" */
854 EXTERN const char Tsgexport[] E_INIT("*=export");
855 #define Texport (Tsgexport + 2) /* "export" */
856 EXTERN const char Tsgreadonly[] E_INIT("*=readonly");
857 #define Treadonly (Tsgreadonly + 2) /* "readonly" */
858 EXTERN const char Tgbuiltin[] E_INIT("=builtin");
859 #define Tbuiltin (Tgbuiltin + 1) /* "builtin" */
860 EXTERN const char T_function[] E_INIT(" function");
861 #define Tfunction (T_function + 1) /* "function" */
862 EXTERN const char TC_LEX1[] E_INIT("|&;<>() \t\n");
863 #define TC_IFSWS (TC_LEX1 + 7) /* space tab newline */
865 typedef uint8_t Temp_type;
866 /* expanded heredoc */
867 #define TT_HEREDOC_EXP 0
868 /* temporary file used for history editing (fc -e) */
869 #define TT_HIST_EDIT 1
870 /* temporary file used during in-situ command substitution */
873 /* temp/heredoc files. The file is removed when the struct is freed. */
877 /* pid of process parsed here-doc */
880 /* actually longer: name (variable length) */
885 * stdio and our IO routines
888 #define shl_xtrace (&shf_iob[0]) /* for set -x */
889 #define shl_stdout (&shf_iob[1])
890 #define shl_out (&shf_iob[2])
892 #define shl_dbg (&shf_iob[3]) /* for DF() */
894 EXTERN bool shl_stdout_ok;
899 typedef struct trap {
900 const char *name; /* short name */
901 const char *mess; /* descriptive name */
902 char *trap; /* trap command */
903 sig_t cursig; /* current handler (valid if TF_ORIG_* set) */
904 sig_t shtrap; /* shell signal handler */
905 int signal; /* signal number */
906 int flags; /* TF_* */
907 volatile sig_atomic_t set; /* trap pending */
910 /* values for Trap.flags */
911 #define TF_SHELL_USES BIT(0) /* shell uses signal, user can't change */
912 #define TF_USER_SET BIT(1) /* user has (tried to) set trap */
913 #define TF_ORIG_IGN BIT(2) /* original action was SIG_IGN */
914 #define TF_ORIG_DFL BIT(3) /* original action was SIG_DFL */
915 #define TF_EXEC_IGN BIT(4) /* restore SIG_IGN just before exec */
916 #define TF_EXEC_DFL BIT(5) /* restore SIG_DFL just before exec */
917 #define TF_DFL_INTR BIT(6) /* when received, default action is LINTR */
918 #define TF_TTY_INTR BIT(7) /* tty generated signal (see j_waitj) */
919 #define TF_CHANGED BIT(8) /* used by runtrap() to detect trap changes */
920 #define TF_FATAL BIT(9) /* causes termination if not trapped */
922 /* values for setsig()/setexecsig() flags argument */
923 #define SS_RESTORE_MASK 0x3 /* how to restore a signal before an exec() */
924 #define SS_RESTORE_CURR 0 /* leave current handler in place */
925 #define SS_RESTORE_ORIG 1 /* restore original handler */
926 #define SS_RESTORE_DFL 2 /* restore to SIG_DFL */
927 #define SS_RESTORE_IGN 3 /* restore to SIG_IGN */
928 #define SS_FORCE BIT(3) /* set signal even if original signal ignored */
929 #define SS_USER BIT(4) /* user is doing the set (ie, trap command) */
930 #define SS_SHTRAP BIT(5) /* trap for internal use (ALRM, CHLD, WINCH) */
932 #define ksh_SIGEXIT 0 /* for trap EXIT */
933 #define ksh_SIGERR ksh_NSIG /* for trap ERR */
935 EXTERN volatile sig_atomic_t trap; /* traps pending? */
936 EXTERN volatile sig_atomic_t intrsig; /* pending trap interrupts command */
937 EXTERN volatile sig_atomic_t fatal_trap; /* received a fatal signal */
938 extern Trap sigtraps[ksh_NSIG + 1];
940 /* got_winch = 1 when we need to re-adjust the window size */
942 EXTERN volatile sig_atomic_t got_winch E_INIT(1);
944 #define got_winch true
950 /* values for ksh_tmout_state */
952 TMOUT_EXECUTING = 0, /* executing commands */
953 TMOUT_READING, /* waiting for input */
954 TMOUT_LEAVING /* have timed out */
956 EXTERN unsigned int ksh_tmout;
957 EXTERN enum tmout_enum ksh_tmout_state E_INIT(TMOUT_EXECUTING);
959 /* For "You have stopped jobs" message */
960 EXTERN bool really_exit;
963 * fast character classes
965 #define C_ALPHA BIT(0) /* a-z_A-Z */
966 #define C_DIGIT BIT(1) /* 0-9 */
967 #define C_LEX1 BIT(2) /* \t \n\0|&;<>() */
968 #define C_VAR1 BIT(3) /* *@#!$-? */
969 #define C_IFSWS BIT(4) /* \t \n (IFS white space) */
970 #define C_SUBOP1 BIT(5) /* "=-+?" */
971 #define C_QUOTE BIT(6) /* \t\n "#$&'()*;<=>?[\]`| (needing quoting) */
972 #define C_IFS BIT(7) /* $IFS */
973 #define C_SUBOP2 BIT(8) /* "#%" (magic, see below) */
975 extern unsigned char chtypes[];
977 #define ctype(c, t) tobool( ((t) == C_SUBOP2) ? \
978 (((c) == '#' || (c) == '%') ? 1 : 0) : \
979 (chtypes[(unsigned char)(c)] & (t)) )
980 #define ord(c) ((int)(unsigned char)(c))
981 #define ksh_isalphx(c) ctype((c), C_ALPHA)
982 #define ksh_isalnux(c) ctype((c), C_ALPHA | C_DIGIT)
983 #define ksh_isdigit(c) (((c) >= '0') && ((c) <= '9'))
984 #define ksh_islower(c) (((c) >= 'a') && ((c) <= 'z'))
985 #define ksh_isupper(c) (((c) >= 'A') && ((c) <= 'Z'))
986 #define ksh_tolower(c) (ksh_isupper(c) ? (c) - 'A' + 'a' : (c))
987 #define ksh_toupper(c) (ksh_islower(c) ? (c) - 'a' + 'A' : (c))
988 #define ksh_isdash(s) (((s)[0] == '-') && ((s)[1] == '\0'))
989 #define ksh_isspace(c) ((((c) >= 0x09) && ((c) <= 0x0D)) || ((c) == 0x20))
990 #define ksh_eq(c,u,l) (((c) | 0x20) == (l))
991 #define ksh_numdig(c) ((c) - ord('0'))
992 #define ksh_numuc(c) ((c) - ord('A'))
993 #define ksh_numlc(c) ((c) - ord('a'))
995 EXTERN int ifs0 E_INIT(' '); /* for "$*" */
997 /* Argument parsing for built-in commands and getopts command */
999 /* Values for Getopt.flags */
1000 #define GF_ERROR BIT(0) /* call errorf() if there is an error */
1001 #define GF_PLUSOPT BIT(1) /* allow +c as an option */
1002 #define GF_NONAME BIT(2) /* don't print argv[0] in errors */
1004 /* Values for Getopt.info */
1005 #define GI_MINUS BIT(0) /* an option started with -... */
1006 #define GI_PLUS BIT(1) /* an option started with +... */
1007 #define GI_MINUSMINUS BIT(2) /* arguments were ended with -- */
1009 /* in case some OS defines these */
1016 int uoptind; /* what user sees in $OPTIND */
1017 int flags; /* see GF_* */
1018 int info; /* see GI_* */
1019 unsigned int p; /* 0 or index into argv[optind - 1] */
1020 char buf[2]; /* for bad option OPTARG value */
1023 EXTERN Getopt builtin_opt; /* for shell builtin commands */
1024 EXTERN Getopt user_opt; /* parsing state for getopts builtin command */
1026 /* This for co-processes */
1028 /* something that won't (realisticly) wrap */
1029 typedef int32_t Coproc_id;
1032 void *job; /* 0 or job of co-process using input pipe */
1033 int read; /* pipe from co-process's stdout */
1034 int readw; /* other side of read (saved temporarily) */
1035 int write; /* pipe to co-process's stdin */
1036 int njobs; /* number of live jobs using output pipe */
1037 Coproc_id id; /* id of current output pipe */
1039 EXTERN struct coproc coproc;
1041 #ifndef MKSH_NOPROSPECTOFWORK
1042 /* used in jobs.c and by coprocess stuff in exec.c and select() calls */
1043 EXTERN sigset_t sm_default, sm_sigchld;
1046 /* name of called builtin function (used by error functions) */
1047 EXTERN const char *builtin_argv0;
1048 /* is called builtin SPEC_BI? */
1049 EXTERN bool builtin_spec;
1051 /* current working directory */
1052 EXTERN char *current_wd;
1054 /* input line size */
1055 #define LINE (4096 - ALLOC_SIZE)
1057 * Minimum required space to work with on a line - if the prompt leaves
1058 * less space than this on a line, the prompt is truncated.
1060 #define MIN_EDIT_SPACE 7
1062 * Minimum allowed value for x_cols: 2 for prompt, 3 for " < " at end of line
1064 #define MIN_COLS (2 + MIN_EDIT_SPACE + 3)
1066 EXTERN mksh_ari_t x_cols E_INIT(80); /* tty columns */
1067 EXTERN mksh_ari_t x_lins E_INIT(24); /* tty lines */
1070 /* Determine the location of the system (common) profile */
1072 #ifndef MKSH_DEFAULT_PROFILEDIR
1073 #if defined(ANDROID)
1074 #define MKSH_DEFAULT_PROFILEDIR "/system/etc"
1076 #define MKSH_DEFAULT_PROFILEDIR "/etc"
1080 #define MKSH_SYSTEM_PROFILE MKSH_DEFAULT_PROFILEDIR "/profile"
1081 #define MKSH_SUID_PROFILE MKSH_DEFAULT_PROFILEDIR "/suid_profile"
1084 /* Used by v_evaluate() and setstr() to control action when error occurs */
1085 #define KSH_UNWIND_ERROR 0 /* unwind the stack (kshlongjmp) */
1086 #define KSH_RETURN_ERROR 1 /* return 1/0 for success/failure */
1089 * Shell file I/O routines
1092 #define SHF_BSIZE 512
1094 #define shf_fileno(shf) ((shf)->fd)
1095 #define shf_setfileno(shf,nfd) ((shf)->fd = (nfd))
1096 #define shf_getc_i(shf) ((shf)->rnleft > 0 ? \
1097 (shf)->rnleft--, *(shf)->rp++ : \
1099 #define shf_putc_i(c, shf) ((shf)->wnleft == 0 ? \
1100 shf_putchar((c), (shf)) : \
1101 ((shf)->wnleft--, *(shf)->wp++ = (c)))
1102 #define shf_eof(shf) ((shf)->flags & SHF_EOF)
1103 #define shf_error(shf) ((shf)->flags & SHF_ERROR)
1104 #define shf_errno(shf) ((shf)->errnosv)
1105 #define shf_clearerr(shf) ((shf)->flags &= ~(SHF_EOF | SHF_ERROR))
1107 /* Flags passed to shf_*open() */
1108 #define SHF_RD 0x0001
1109 #define SHF_WR 0x0002
1110 #define SHF_RDWR (SHF_RD|SHF_WR)
1111 #define SHF_ACCMODE 0x0003 /* mask */
1112 #define SHF_GETFL 0x0004 /* use fcntl() to figure RD/WR flags */
1113 #define SHF_UNBUF 0x0008 /* unbuffered I/O */
1114 #define SHF_CLEXEC 0x0010 /* set close on exec flag */
1115 #define SHF_MAPHI 0x0020 /* make fd > FDBASE (and close orig)
1116 * (shf_open() only) */
1117 #define SHF_DYNAMIC 0x0040 /* string: increase buffer as needed */
1118 #define SHF_INTERRUPT 0x0080 /* EINTR in read/write causes error */
1119 /* Flags used internally */
1120 #define SHF_STRING 0x0100 /* a string, not a file */
1121 #define SHF_ALLOCS 0x0200 /* shf and shf->buf were alloc()ed */
1122 #define SHF_ALLOCB 0x0400 /* shf->buf was alloc()ed */
1123 #define SHF_ERROR 0x0800 /* read()/write() error */
1124 #define SHF_EOF 0x1000 /* read eof (sticky) */
1125 #define SHF_READING 0x2000 /* currently reading: rnleft,rp valid */
1126 #define SHF_WRITING 0x4000 /* currently writing: wnleft,wp valid */
1130 Area *areap; /* area shf/buf were allocated in */
1131 unsigned char *rp; /* read: current position in buffer */
1132 unsigned char *wp; /* write: current position in buffer */
1133 unsigned char *buf; /* buffer */
1134 ssize_t bsize; /* actual size of buf */
1135 ssize_t rbsize; /* size of buffer (1 if SHF_UNBUF) */
1136 ssize_t rnleft; /* read: how much data left in buffer */
1137 ssize_t wbsize; /* size of buffer (0 if SHF_UNBUF) */
1138 ssize_t wnleft; /* write: how much space left in buffer */
1139 int flags; /* see SHF_* */
1140 int fd; /* file descriptor */
1141 int errnosv; /* saved value of errno after error */
1144 extern struct shf shf_iob[];
1147 Area *areap; /* area to allocate entries */
1148 struct tbl **tbls; /* hashed table items */
1149 size_t nfree; /* free table entries */
1150 uint8_t tshift; /* table size (2^tshift) */
1155 /* Area to allocate from */
1159 char *s; /* string */
1160 mksh_ari_t i; /* integer */
1161 mksh_uari_t u; /* unsigned integer */
1162 int (*f)(const char **); /* built-in command */
1163 struct op *t; /* "function" tree */
1166 struct tbl *array; /* array values */
1167 const char *fpath; /* temporary path to undef function */
1170 int field; /* field with for -L/-R/-Z */
1171 int errnov; /* CEXEC/CTALIAS */
1174 uint32_t hval; /* hash(name) */
1175 uint32_t index; /* index for an array */
1178 * command type (see below), base (if INTEGER),
1179 * offset from val.s of value (if EXPORT)
1182 /* flags (see below) */
1185 /* actually longer: name (variable length) */
1189 EXTERN struct tbl vtemp;
1191 /* common flag bits */
1192 #define ALLOC BIT(0) /* val.s has been allocated */
1193 #define DEFINED BIT(1) /* is defined in block */
1194 #define ISSET BIT(2) /* has value, vp->val.[si] */
1195 #define EXPORT BIT(3) /* exported variable/function */
1196 #define TRACE BIT(4) /* var: user flagged, func: execution tracing */
1197 /* (start non-common flags at 8) */
1198 /* flag bits used for variables */
1199 #define SPECIAL BIT(8) /* PATH, IFS, SECONDS, etc */
1200 #define INTEGER BIT(9) /* val.i contains integer value */
1201 #define RDONLY BIT(10) /* read-only variable */
1202 #define LOCAL BIT(11) /* for local typeset() */
1203 #define ARRAY BIT(13) /* array */
1204 #define LJUST BIT(14) /* left justify */
1205 #define RJUST BIT(15) /* right justify */
1206 #define ZEROFIL BIT(16) /* 0 filled if RJUSTIFY, strip 0s if LJUSTIFY */
1207 #define LCASEV BIT(17) /* convert to lower case */
1208 #define UCASEV_AL BIT(18) /* convert to upper case / autoload function */
1209 #define INT_U BIT(19) /* unsigned integer */
1210 #define INT_L BIT(20) /* long integer (no-op but used as magic) */
1211 #define IMPORT BIT(21) /* flag to typeset(): no arrays, must have = */
1212 #define LOCAL_COPY BIT(22) /* with LOCAL - copy attrs from existing var */
1213 #define EXPRINEVAL BIT(23) /* contents currently being evaluated */
1214 #define EXPRLVALUE BIT(24) /* useable as lvalue (temp flag) */
1215 #define AINDEX BIT(25) /* array index >0 = ua.index filled in */
1216 #define ASSOC BIT(26) /* ARRAY ? associative : reference */
1217 /* flag bits used for taliases/builtins/aliases/keywords/functions */
1218 #define KEEPASN BIT(8) /* keep command assignments (eg, var=x cmd) */
1219 #define FINUSE BIT(9) /* function being executed */
1220 #define FDELETE BIT(10) /* function deleted while it was executing */
1221 #define FKSH BIT(11) /* function defined with function x (vs x()) */
1222 #define SPEC_BI BIT(12) /* a POSIX special builtin */
1224 * Attributes that can be set by the user (used to decide if an unset
1225 * param should be repoted by set/typeset). Does not include ARRAY or
1228 #define USERATTRIB (EXPORT|INTEGER|RDONLY|LJUST|RJUST|ZEROFIL|\
1229 LCASEV|UCASEV_AL|INT_U|INT_L)
1231 #define arrayindex(vp) ((unsigned long)((vp)->flag & AINDEX ? \
1232 (vp)->ua.index : 0))
1241 #define CNONE 0 /* undefined */
1242 #define CSHELL 1 /* built-in */
1243 #define CFUNC 2 /* function */
1244 #define CEXEC 4 /* executable command */
1245 #define CALIAS 5 /* alias */
1246 #define CKEYWD 6 /* keyword */
1247 #define CTALIAS 7 /* tracked alias */
1249 /* Flags for findcom()/comexec() */
1250 #define FC_SPECBI BIT(0) /* special builtin */
1251 #define FC_FUNC BIT(1) /* function */
1252 #define FC_NORMBI BIT(2) /* not special builtin */
1253 #define FC_BI (FC_SPECBI | FC_NORMBI)
1254 #define FC_PATH BIT(3) /* do path search */
1255 #define FC_DEFPATH BIT(4) /* use default path in path search */
1258 #define AF_ARGV_ALLOC 0x1 /* argv[] array allocated */
1259 #define AF_ARGS_ALLOCED 0x2 /* argument strings allocated */
1260 #define AI_ARGV(a, i) ((i) == 0 ? (a).argv[0] : (a).argv[(i) - (a).skip])
1261 #define AI_ARGC(a) ((a).ai_argc - (a).skip)
1263 /* Argument info. Used for $#, $* for shell, functions, includes, etc. */
1266 int flags; /* AF_* */
1268 int skip; /* first arg is argv[0], second is argv[1 + skip] */
1272 * activation record for function blocks
1275 Area area; /* area to allocate things */
1277 char *error; /* error handler */
1278 char *exit; /* exit handler */
1279 struct block *next; /* enclosing block */
1280 struct table vars; /* local variables */
1281 struct table funs; /* local functions */
1282 Getopt getopts_state;
1284 int flags; /* see BF_* */
1287 /* Values for struct block.flags */
1288 #define BF_DOGETOPTS BIT(0) /* save/restore getopts state */
1289 #define BF_STOPENV BIT(1) /* do not export further */
1292 * Used by ktwalk() and ktnext() routines.
1299 EXTERN struct table taliases; /* tracked aliases */
1300 EXTERN struct table builtins; /* built-in commands */
1301 EXTERN struct table aliases; /* aliases */
1302 EXTERN struct table keywords; /* keywords */
1303 #ifndef MKSH_NOPWNAM
1304 EXTERN struct table homedirs; /* homedir() cache */
1309 int (*func)(const char **);
1312 extern const struct builtin mkshbuiltins[];
1314 /* values for set_prompt() */
1315 #define PS1 0 /* command */
1316 #define PS2 1 /* command continuation */
1318 EXTERN char *path; /* copy of either PATH or def_path */
1319 EXTERN const char *def_path; /* path to use if PATH not set */
1320 EXTERN char *tmpdir; /* TMPDIR value */
1321 EXTERN const char *prompt;
1322 EXTERN uint8_t cur_prompt; /* PS1 or PS2 */
1323 EXTERN int current_lineno; /* LINENO value */
1326 * Description of a command or an operation on commands.
1329 const char **args; /* arguments to a command */
1330 char **vars; /* variable assignments */
1331 struct ioword **ioact; /* IO actions (eg, < > >>) */
1332 struct op *left, *right; /* descendents */
1333 char *str; /* word for case; identifier for for,
1334 * select, and functions;
1335 * path to execute for TEXEC;
1336 * time hook for TCOM.
1338 int lineno; /* TCOM/TFUNC: LINENO for this */
1339 short type; /* operation type, see below */
1340 /* WARNING: newtp(), tcopy() use evalflags = 0 to clear union */
1342 /* TCOM: arg expansion eval() flags */
1344 /* TFUNC: function x (vs x()) */
1346 /* TPAT: termination character */
1351 /* Tree.type values */
1353 #define TCOM 1 /* command */
1354 #define TPAREN 2 /* (c-list) */
1355 #define TPIPE 3 /* a | b */
1356 #define TLIST 4 /* a ; b */
1357 #define TOR 5 /* || */
1358 #define TAND 6 /* && */
1359 #define TBANG 7 /* ! */
1360 #define TDBRACKET 8 /* [[ .. ]] */
1368 #define TPAT 16 /* pattern in case */
1369 #define TBRACE 17 /* {c-list} */
1370 #define TASYNC 18 /* c & */
1371 #define TFUNCT 19 /* function name { command; } */
1372 #define TTIME 20 /* time pipeline */
1373 #define TEXEC 21 /* fork/exec eval'd TCOM */
1374 #define TCOPROC 22 /* coprocess |& */
1377 * prefix codes for words in command tree
1379 #define EOS 0 /* end of string */
1380 #define CHAR 1 /* unquoted character */
1381 #define QCHAR 2 /* quoted character */
1382 #define COMSUB 3 /* $() substitution (0 terminated) */
1383 #define EXPRSUB 4 /* $(()) substitution (0 terminated) */
1384 #define OQUOTE 5 /* opening " or ' */
1385 #define CQUOTE 6 /* closing " or ' */
1386 #define OSUBST 7 /* opening ${ subst (followed by { or X) */
1387 #define CSUBST 8 /* closing } of above (followed by } or X) */
1388 #define OPAT 9 /* open pattern: *(, @(, etc. */
1389 #define SPAT 10 /* separate pattern: | */
1390 #define CPAT 11 /* close pattern: ) */
1391 #define ADELIM 12 /* arbitrary delimiter: ${foo:2:3} ${foo/bar/baz} */
1392 #define FUNSUB 14 /* ${ foo;} substitution (NUL terminated) */
1393 #define VALSUB 15 /* ${|foo;} substitution (NUL terminated) */
1399 char *name; /* filename (unused if heredoc) */
1400 char *delim; /* delimiter for <<, <<- */
1401 char *heredoc; /* content of heredoc */
1402 unsigned short ioflag; /* action (below) */
1403 short unit; /* unit (fd) affected */
1406 /* ioword.flag - type of redirection */
1407 #define IOTYPE 0xF /* type: bits 0:3 */
1408 #define IOREAD 0x1 /* < */
1409 #define IOWRITE 0x2 /* > */
1410 #define IORDWR 0x3 /* <>: todo */
1411 #define IOHERE 0x4 /* << (here file) */
1412 #define IOCAT 0x5 /* >> */
1413 #define IODUP 0x6 /* <&/>& */
1414 #define IOEVAL BIT(4) /* expand in << */
1415 #define IOSKIP BIT(5) /* <<-, skip ^\t* */
1416 #define IOCLOB BIT(6) /* >|, override -o noclobber */
1417 #define IORDUP BIT(7) /* x<&y (as opposed to x>&y) */
1418 #define IONAMEXP BIT(8) /* name has been expanded */
1419 #define IOBASH BIT(9) /* &> etc. */
1420 #define IOHERESTR BIT(10) /* <<< (here string) */
1421 #define IONDELIM BIT(11) /* null delimiter (<<) */
1423 /* execute/exchild flags */
1424 #define XEXEC BIT(0) /* execute without forking */
1425 #define XFORK BIT(1) /* fork before executing */
1426 #define XBGND BIT(2) /* command & */
1427 #define XPIPEI BIT(3) /* input is pipe */
1428 #define XPIPEO BIT(4) /* output is pipe */
1429 #define XXCOM BIT(5) /* `...` command */
1430 #define XPCLOSE BIT(6) /* exchild: close close_fd in parent */
1431 #define XCCLOSE BIT(7) /* exchild: close close_fd in child */
1432 #define XERROK BIT(8) /* non-zero exit ok (for set -e) */
1433 #define XCOPROC BIT(9) /* starting a co-process */
1434 #define XTIME BIT(10) /* timing TCOM command */
1435 #define XPIPEST BIT(11) /* want PIPESTATUS */
1438 * flags to control expansion of words (assumed by t->evalflags to fit
1441 #define DOBLANK BIT(0) /* perform blank interpretation */
1442 #define DOGLOB BIT(1) /* expand [?* */
1443 #define DOPAT BIT(2) /* quote *?[ */
1444 #define DOTILDE BIT(3) /* normal ~ expansion (first char) */
1445 #define DONTRUNCOMMAND BIT(4) /* do not run $(command) things */
1446 #define DOASNTILDE BIT(5) /* assignment ~ expansion (after =, :) */
1447 #define DOBRACE BIT(6) /* used by expand(): do brace expansion */
1448 #define DOMAGIC BIT(7) /* used by expand(): string contains MAGIC */
1449 #define DOTEMP BIT(8) /* dito: in word part of ${..[%#=?]..} */
1450 #define DOVACHECK BIT(9) /* var assign check (for typeset, set, etc) */
1451 #define DOMARKDIRS BIT(10) /* force markdirs behaviour */
1452 #define DOTCOMEXEC BIT(11) /* not an eval flag, used by sh -c hack */
1453 #define DOSCALAR BIT(12) /* change field handling to non-list context */
1454 #define DOHEREDOC BIT(13) /* change scalar handling to heredoc body */
1456 #define X_EXTRA 20 /* this many extra bytes in X string */
1458 typedef struct XString {
1459 char *end, *beg; /* end, begin of string */
1460 size_t len; /* length */
1461 Area *areap; /* area to allocate/free from */
1464 typedef char *XStringP;
1466 /* initialise expandable string */
1467 #define XinitN(xs, length, area) do { \
1468 (xs).len = (length); \
1469 (xs).areap = (area); \
1470 (xs).beg = alloc((xs).len + X_EXTRA, (xs).areap); \
1471 (xs).end = (xs).beg + (xs).len; \
1472 } while (/* CONSTCOND */ 0)
1473 #define Xinit(xs, xp, length, area) do { \
1474 XinitN((xs), (length), (area)); \
1476 } while (/* CONSTCOND */ 0)
1478 /* stuff char into string */
1479 #define Xput(xs, xp, c) (*xp++ = (c))
1481 /* check if there are at least n bytes left */
1482 #define XcheckN(xs, xp, n) do { \
1483 ssize_t more = ((xp) + (n)) - (xs).end; \
1485 (xp) = Xcheck_grow(&(xs), (xp), (size_t)more); \
1486 } while (/* CONSTCOND */ 0)
1488 /* check for overflow, expand string */
1489 #define Xcheck(xs, xp) XcheckN((xs), (xp), 1)
1492 #define Xfree(xs, xp) afree((xs).beg, (xs).areap)
1494 /* close, return string */
1495 #define Xclose(xs, xp) aresize((xs).beg, (xp) - (xs).beg, (xs).areap)
1497 /* begin of string */
1498 #define Xstring(xs, xp) ((xs).beg)
1500 #define Xnleft(xs, xp) ((xs).end - (xp)) /* may be less than 0 */
1501 #define Xlength(xs, xp) ((xp) - (xs).beg)
1502 #define Xsize(xs, xp) ((xs).end - (xs).beg)
1503 #define Xsavepos(xs, xp) ((xp) - (xs).beg)
1504 #define Xrestpos(xs, xp, n) ((xs).beg + (n))
1506 char *Xcheck_grow(XString *, const char *, size_t);
1509 * expandable vector of generic pointers
1513 /* begin of allocated area */
1515 /* currently used number of entries */
1517 /* allocated number of entries */
1521 #define XPinit(x, n) do { \
1524 (x).beg = alloc2((x).siz, sizeof(void *), ATEMP); \
1525 } while (/* CONSTCOND */ 0) \
1527 #define XPput(x, p) do { \
1528 if ((x).len == (x).siz) { \
1529 (x).beg = aresize2((x).beg, (x).siz, \
1530 2 * sizeof(void *), ATEMP); \
1533 (x).beg[(x).len++] = (p); \
1534 } while (/* CONSTCOND */ 0)
1536 #define XPptrv(x) ((x).beg)
1537 #define XPsize(x) ((x).len)
1538 #define XPclose(x) aresize2((x).beg, XPsize(x), sizeof(void *), ATEMP)
1539 #define XPfree(x) afree((x).beg, ATEMP)
1545 typedef struct source Source;
1547 const char *str; /* input pointer */
1548 const char *start; /* start of current buffer */
1550 const char **strv; /* string [] */
1551 struct shf *shf; /* shell file */
1552 struct tbl *tblp; /* alias (SF_HASALIAS) */
1553 char *freeme; /* also for SREREAD */
1555 const char *file; /* input file name */
1556 int type; /* input type */
1557 int line; /* line number */
1558 int errline; /* line the error occurred on (0 if not set) */
1559 int flags; /* SF_* */
1561 Source *next; /* stacked source */
1562 XString xs; /* input buffer */
1563 char ugbuf[2]; /* buffer for ungetsc() (SREREAD) and
1567 /* Source.type values */
1568 #define SEOF 0 /* input EOF */
1569 #define SFILE 1 /* file input */
1570 #define SSTDIN 2 /* read stdin */
1571 #define SSTRING 3 /* string */
1572 #define SWSTR 4 /* string without \n */
1573 #define SWORDS 5 /* string[] */
1574 #define SWORDSEP 6 /* string[] separator */
1575 #define SALIAS 7 /* alias expansion */
1576 #define SREREAD 8 /* read ahead to be re-scanned */
1577 #define SSTRINGCMDLINE 9 /* string from "mksh -c ..." */
1579 /* Source.flags values */
1580 #define SF_ECHO BIT(0) /* echo input to shlout */
1581 #define SF_ALIAS BIT(1) /* faking space at end of alias */
1582 #define SF_ALIASEND BIT(2) /* faking space at end of alias */
1583 #define SF_TTY BIT(3) /* type == SSTDIN & it is a tty */
1584 #define SF_HASALIAS BIT(4) /* u.tblp valid (SALIAS, SEOF) */
1585 #define SF_MAYEXEC BIT(5) /* special sh -c optimisation hack */
1595 /* If something is added here, add it to tokentab[] in syn.c as well */
1597 #define LOGAND 257 /* && */
1598 #define LOGOR 258 /* || */
1599 #define BREAK 259 /* ;; */
1614 #define FUNCTION 274
1617 #define MDPAREN 277 /* (( )) */
1618 #define BANG 278 /* ! */
1619 #define DBRACKET 279 /* [[ .. ]] */
1620 #define COPROC 280 /* |& */
1621 #define BRKEV 281 /* ;| */
1622 #define BRKFT 282 /* ;& */
1623 #define YYERRCODE 300
1625 /* flags to yylex */
1626 #define CONTIN BIT(0) /* skip new lines to complete command */
1627 #define ONEWORD BIT(1) /* single word for substitute() */
1628 #define ALIAS BIT(2) /* recognise alias */
1629 #define KEYWORD BIT(3) /* recognise keywords */
1630 #define LETEXPR BIT(4) /* get expression inside (( )) */
1631 #define VARASN BIT(5) /* check for var=word */
1632 #define ARRAYVAR BIT(6) /* parse x[1 & 2] as one word */
1633 #define ESACONLY BIT(7) /* only accept esac keyword */
1634 #define HEREDELIM BIT(8) /* parsing <<,<<- delimiter */
1635 #define LQCHAR BIT(9) /* source string contains QCHAR */
1636 #define HEREDOC BIT(10) /* parsing a here document body */
1638 #define HERES 10 /* max number of << in line */
1641 #define CTRL(x) ((x) == '?' ? 0x7F : (x) & 0x1F) /* ASCII */
1642 #define UNCTRL(x) ((x) ^ 0x40) /* ASCII */
1643 #define ISCTRL(x) (((signed char)((uint8_t)(x) + 1)) < 33)
1647 EXTERN Source *source; /* yyparse/yylex source */
1648 EXTERN YYSTYPE yylval; /* result from yylex */
1649 EXTERN struct ioword *heres[HERES], **herep;
1650 EXTERN char ident[IDENT + 1];
1652 EXTERN char **history; /* saved commands */
1653 EXTERN char **histptr; /* last history item */
1654 EXTERN mksh_ari_t histsize; /* history size */
1656 /* flags to histsave */
1657 #define HIST_FLUSH 0
1658 #define HIST_QUEUE 1
1659 #define HIST_APPEND 2
1660 #define HIST_STORE 3
1663 /* user and system time of last j_waitjed job */
1664 EXTERN struct timeval j_usrtime, j_systime;
1666 #define notok2mul(max, val, c) (((val) != 0) && ((c) != 0) && \
1667 (((max) / (c)) < (val)))
1668 #define notok2add(max, val, c) ((val) > ((max) - (c)))
1669 #define notoktomul(val, cnst) notok2mul(SIZE_MAX, (val), (cnst))
1670 #define notoktoadd(val, cnst) notok2add(SIZE_MAX, (val), (cnst))
1671 #define checkoktoadd(val, cnst) do { \
1672 if (notoktoadd((val), (cnst))) \
1673 internal_errorf(Tintovfl, (size_t)(val), \
1674 '+', (size_t)(cnst)); \
1675 } while (/* CONSTCOND */ 0)
1680 void afreeall(Area *);
1681 /* these cannot fail and can take NULL (not for ap) */
1682 #define alloc(n, ap) aresize(NULL, (n), (ap))
1683 #define alloc2(m, n, ap) aresize2(NULL, (m), (n), (ap))
1684 void *aresize(void *, size_t, Area *);
1685 void *aresize2(void *, size_t, size_t, Area *);
1686 void afree(void *, Area *); /* can take NULL */
1688 #ifndef MKSH_NO_CMDLINE_EDITING
1690 int x_bind(const char *, const char *, bool, bool);
1692 int x_bind(const char *, const char *, bool);
1700 void x_mkraw(int, mksh_ttyst *, bool);
1702 char *substitute(const char *, int);
1703 char **eval(const char **, int);
1704 char *evalstr(const char *cp, int);
1705 char *evalonestr(const char *cp, int);
1706 char *debunk(char *, const char *, size_t);
1707 void expand(const char *, XPtrV *, int);
1708 int glob_str(char *, XPtrV *, bool);
1709 char *do_tilde(char *);
1711 int execute(struct op * volatile, volatile int, volatile int * volatile);
1712 int shcomexec(const char **);
1713 struct tbl *findfunc(const char *, uint32_t, bool);
1714 int define(const char *, struct op *);
1715 const char *builtin(const char *, int (*)(const char **));
1716 struct tbl *findcom(const char *, int);
1717 void flushcom(bool);
1718 const char *search_path(const char *, const char *, int, int *);
1719 void pr_menu(const char * const *);
1720 void pr_list(char * const *);
1722 int evaluate(const char *, mksh_ari_t *, int, bool);
1723 int v_evaluate(struct tbl *, const char *, volatile int, bool);
1725 size_t utf_mbtowc(unsigned int *, const char *);
1726 size_t utf_wctomb(char *, unsigned int);
1727 int utf_widthadj(const char *, const char **);
1728 size_t utf_mbswidth(const char *) MKSH_A_PURE;
1729 const char *utf_skipcols(const char *, int) MKSH_A_PURE;
1730 size_t utf_ptradj(const char *) MKSH_A_PURE;
1731 int utf_wcwidth(unsigned int) MKSH_A_PURE;
1732 int ksh_access(const char *, int);
1733 struct tbl *tempvar(void);
1735 int c_hash(const char **);
1736 int c_pwd(const char **);
1737 int c_print(const char **);
1738 #ifdef MKSH_PRINTF_BUILTIN
1739 int c_printf(const char **);
1741 int c_whence(const char **);
1742 int c_command(const char **);
1743 int c_typeset(const char **);
1744 int c_alias(const char **);
1745 int c_unalias(const char **);
1746 int c_let(const char **);
1747 int c_jobs(const char **);
1748 #ifndef MKSH_UNEMPLOYED
1749 int c_fgbg(const char **);
1751 int c_kill(const char **);
1752 void getopts_reset(int);
1753 int c_getopts(const char **);
1754 #ifndef MKSH_NO_CMDLINE_EDITING
1755 int c_bind(const char **);
1757 int c_shift(const char **);
1758 int c_umask(const char **);
1759 int c_dot(const char **);
1760 int c_wait(const char **);
1761 int c_read(const char **);
1762 int c_eval(const char **);
1763 int c_trap(const char **);
1764 int c_brkcont(const char **);
1765 int c_exitreturn(const char **);
1766 int c_set(const char **);
1767 int c_unset(const char **);
1768 int c_ulimit(const char **);
1769 int c_times(const char **);
1770 int timex(struct op *, int, volatile int *);
1771 void timex_hook(struct op *, char ** volatile *);
1772 int c_exec(const char **);
1773 /* dummy function (just need pointer value), special case in comexec() */
1774 #define c_builtin shcomexec
1775 int c_test(const char **);
1777 int c_mknod(const char **);
1779 int c_realpath(const char **);
1780 int c_rename(const char **);
1781 int c_cat(const char **);
1782 int c_sleep(const char **);
1784 void init_histvec(void);
1785 void hist_init(Source *);
1786 #if HAVE_PERSISTENT_HISTORY
1787 void hist_finish(void);
1789 void histsave(int *, const char *, int, bool);
1790 #if !defined(MKSH_SMALL) && HAVE_PERSISTENT_HISTORY
1791 bool histsync(void);
1793 int c_fc(const char **);
1794 void sethistsize(mksh_ari_t);
1795 #if HAVE_PERSISTENT_HISTORY
1796 void sethistfile(const char *);
1798 #if !defined(MKSH_NO_CMDLINE_EDITING) && !MKSH_S_NOVI
1799 char **histpos(void) MKSH_A_PURE;
1802 int findhist(int, int, const char *, bool) MKSH_A_PURE;
1803 char **hist_get_newest(bool);
1804 void inittraps(void);
1805 void alarm_init(void);
1806 Trap *gettrap(const char *, bool, bool);
1808 void intrcheck(void);
1809 int fatal_trap_check(void);
1810 int trap_pending(void);
1811 void runtraps(int intr);
1812 void runtrap(Trap *, bool);
1813 void cleartraps(void);
1814 void restoresigs(void);
1815 void settrap(Trap *, const char *);
1816 int block_pipe(void);
1817 void restore_pipe(int);
1818 int setsig(Trap *, sig_t, int);
1819 void setexecsig(Trap *, int);
1820 #if HAVE_FLOCK || HAVE_LOCK_FCNTL
1821 void mksh_lockfd(int);
1822 void mksh_unlkfd(int);
1827 #ifndef MKSH_UNEMPLOYED
1828 void j_change(void);
1830 int exchild(struct op *, int, volatile int *, int);
1831 void startlast(void);
1833 int waitfor(const char *, int *);
1834 int j_kill(const char *, int);
1835 #ifndef MKSH_UNEMPLOYED
1836 int j_resume(const char *, int);
1838 #if !defined(MKSH_UNEMPLOYED) && HAVE_GETSID
1839 void j_suspend(void);
1841 int j_jobs(const char *, int, int);
1842 void j_notify(void);
1843 pid_t j_async(void);
1844 int j_stopped_running(void);
1847 void yyskiputf8bom(void);
1848 void yyerror(const char *, ...)
1850 MKSH_A_FORMAT(__printf__, 1, 2);
1851 Source *pushs(int, Area *);
1852 void set_prompt(int, Source *);
1853 int pprompt(const char *, int);
1855 int include(const char *, int, const char **, bool);
1856 int command(const char *, int);
1857 int shell(Source * volatile, volatile bool);
1858 /* argument MUST NOT be 0 */
1859 void unwind(int) MKSH_A_NORETURN;
1861 void quitenv(struct shf *);
1862 void cleanup_parents_env(void);
1863 void cleanup_proc_env(void);
1864 void errorf(const char *, ...)
1866 MKSH_A_FORMAT(__printf__, 1, 2);
1867 void errorfx(int, const char *, ...)
1869 MKSH_A_FORMAT(__printf__, 2, 3);
1870 void warningf(bool, const char *, ...)
1871 MKSH_A_FORMAT(__printf__, 2, 3);
1872 void bi_errorf(const char *, ...)
1873 MKSH_A_FORMAT(__printf__, 1, 2);
1874 #define errorfz() errorf(NULL)
1875 #define errorfxz(rc) errorfx((rc), NULL)
1876 #define bi_errorfz() bi_errorf(NULL)
1877 void internal_errorf(const char *, ...)
1879 MKSH_A_FORMAT(__printf__, 1, 2);
1880 void internal_warningf(const char *, ...)
1881 MKSH_A_FORMAT(__printf__, 1, 2);
1882 void error_prefix(bool);
1883 void shellf(const char *, ...)
1884 MKSH_A_FORMAT(__printf__, 1, 2);
1885 void shprintf(const char *, ...)
1886 MKSH_A_FORMAT(__printf__, 1, 2);
1889 int ksh_dup2(int, int, bool);
1891 void restfd(int, int);
1892 void openpipe(int *);
1893 void closepipe(int *);
1894 int check_fd(const char *, int, const char **);
1895 void coproc_init(void);
1896 void coproc_read_close(int);
1897 void coproc_readw_close(int);
1898 void coproc_write_close(int);
1899 int coproc_getfd(int, const char **);
1900 void coproc_cleanup(int);
1901 struct temp *maketemp(Area *, Temp_type, struct temp **);
1902 void ktinit(Area *, struct table *, uint8_t);
1903 struct tbl *ktscan(struct table *, const char *, uint32_t, struct tbl ***);
1904 /* table, name (key) to search for, hash(n) */
1905 #define ktsearch(tp, s, h) ktscan((tp), (s), (h), NULL)
1906 struct tbl *ktenter(struct table *, const char *, uint32_t);
1907 #define ktdelete(p) do { p->flag = 0; } while (/* CONSTCOND */ 0)
1908 void ktwalk(struct tstate *, struct table *);
1909 struct tbl *ktnext(struct tstate *);
1910 struct tbl **ktsort(struct table *);
1912 void DF(const char *, ...)
1913 MKSH_A_FORMAT(__printf__, 1, 2);
1916 void setctypes(const char *, int);
1917 void initctypes(void);
1918 size_t option(const char *) MKSH_A_PURE;
1919 char *getoptions(void);
1920 void change_flag(enum sh_flag, int, bool);
1921 void change_xtrace(unsigned char, bool);
1922 int parse_args(const char **, int, bool *);
1923 int getn(const char *, int *);
1924 int gmatchx(const char *, const char *, bool);
1925 int has_globbing(const char *, const char *) MKSH_A_PURE;
1926 int xstrcmp(const void *, const void *) MKSH_A_PURE;
1927 void ksh_getopt_reset(Getopt *, int);
1928 int ksh_getopt(const char **, Getopt *, const char *);
1929 void print_value_quoted(struct shf *, const char *);
1930 char *quote_value(const char *);
1931 void print_columns(struct shf *, unsigned int,
1932 void (*)(char *, size_t, unsigned int, const void *),
1933 const void *, size_t, size_t, bool);
1934 void strip_nuls(char *, size_t)
1935 MKSH_A_BOUNDED(__string__, 1, 2);
1936 ssize_t blocking_read(int, char *, size_t)
1937 MKSH_A_BOUNDED(__buffer__, 2, 3);
1938 int reset_nonblock(int);
1939 char *ksh_get_wd(void);
1940 char *do_realpath(const char *);
1941 void simplify_path(char *);
1942 void set_current_wd(const char *);
1943 int c_cd(const char **);
1944 #if defined(MKSH_SMALL) && !defined(MKSH_SMALL_BUT_FAST)
1945 char *strdup_i(const char *, Area *);
1946 char *strndup_i(const char *, size_t, Area *);
1948 int unbksl(bool, int (*)(void), void (*)(int));
1950 struct shf *shf_open(const char *, int, int, int);
1951 struct shf *shf_fdopen(int, int, struct shf *);
1952 struct shf *shf_reopen(int, int, struct shf *);
1953 struct shf *shf_sopen(char *, ssize_t, int, struct shf *);
1954 int shf_close(struct shf *);
1955 int shf_fdclose(struct shf *);
1956 char *shf_sclose(struct shf *);
1957 int shf_flush(struct shf *);
1958 ssize_t shf_read(char *, ssize_t, struct shf *);
1959 char *shf_getse(char *, ssize_t, struct shf *);
1960 int shf_getchar(struct shf *s);
1961 int shf_ungetc(int, struct shf *);
1962 #if defined(MKSH_SMALL) && !defined(MKSH_SMALL_BUT_FAST)
1963 int shf_getc(struct shf *);
1964 int shf_putc(int, struct shf *);
1966 #define shf_getc shf_getc_i
1967 #define shf_putc shf_putc_i
1969 int shf_putchar(int, struct shf *);
1970 ssize_t shf_puts(const char *, struct shf *);
1971 ssize_t shf_write(const char *, ssize_t, struct shf *);
1972 ssize_t shf_fprintf(struct shf *, const char *, ...)
1973 MKSH_A_FORMAT(__printf__, 2, 3);
1974 ssize_t shf_snprintf(char *, ssize_t, const char *, ...)
1975 MKSH_A_FORMAT(__printf__, 3, 4)
1976 MKSH_A_BOUNDED(__string__, 1, 2);
1977 char *shf_smprintf(const char *, ...)
1978 MKSH_A_FORMAT(__printf__, 1, 2);
1979 ssize_t shf_vfprintf(struct shf *, const char *, va_list)
1980 MKSH_A_FORMAT(__printf__, 2, 0);
1982 int assign_command(const char *);
1983 void initkeywords(void);
1984 struct op *compile(Source *, bool);
1985 bool parse_usec(const char *, struct timeval *);
1986 char *yyrecursive(int);
1987 void yyrecursive_pop(bool);
1989 void fptreef(struct shf *, int, const char *, ...);
1990 char *snptreef(char *, ssize_t, const char *, ...);
1991 struct op *tcopy(struct op *, Area *);
1992 char *wdcopy(const char *, Area *);
1993 const char *wdscan(const char *, int);
1994 #define WDS_TPUTS BIT(0) /* tputS (dumpwdvar) mode */
1995 #define WDS_KEEPQ BIT(1) /* keep quote characters */
1996 #define WDS_MAGIC BIT(2) /* make MAGIC */
1997 char *wdstrip(const char *, int);
1998 void tfree(struct op *, Area *);
1999 void dumpchar(struct shf *, int);
2000 void dumptree(struct shf *, struct op *);
2001 void dumpwdvar(struct shf *, const char *);
2002 void dumpioact(struct shf *shf, struct op *t);
2003 void vistree(char *, size_t, struct op *)
2004 MKSH_A_BOUNDED(__string__, 1, 2);
2005 void fpFUNCTf(struct shf *, int, bool, const char *, struct op *);
2007 void newblock(void);
2008 void popblock(void);
2010 struct block *varsearch(struct block *, struct tbl **, const char *, uint32_t);
2011 struct tbl *global(const char *);
2012 struct tbl *local(const char *, bool);
2013 char *str_val(struct tbl *);
2014 int setstr(struct tbl *, const char *, int);
2015 struct tbl *setint_v(struct tbl *, struct tbl *, bool);
2016 void setint(struct tbl *, mksh_ari_t);
2017 void setint_n(struct tbl *, mksh_ari_t, int);
2018 struct tbl *typeset(const char *, uint32_t, uint32_t, int, int);
2019 void unset(struct tbl *, int);
2020 const char *skip_varname(const char *, bool) MKSH_A_PURE;
2021 const char *skip_wdvarname(const char *, bool) MKSH_A_PURE;
2022 int is_wdvarname(const char *, bool) MKSH_A_PURE;
2023 int is_wdvarassign(const char *) MKSH_A_PURE;
2024 struct tbl *arraysearch(struct tbl *, uint32_t);
2025 char **makenv(void);
2026 void change_winsz(void);
2027 size_t array_ref_len(const char *) MKSH_A_PURE;
2028 char *arrayname(const char *);
2029 mksh_uari_t set_array(const char *, bool, const char **);
2030 uint32_t hash(const void *) MKSH_A_PURE;
2031 uint32_t chvt_rndsetup(const void *, size_t) MKSH_A_PURE;
2032 mksh_ari_t rndget(void);
2033 void rndset(unsigned long);
2034 void rndpush(const void *);
2039 /* unary operators */
2040 TO_STNZE, TO_STZER, TO_OPTION,
2043 TO_FILREG, TO_FILBDEV, TO_FILCDEV, TO_FILSYM, TO_FILFIFO, TO_FILSOCK,
2044 TO_FILCDF, TO_FILID, TO_FILGID, TO_FILSETG, TO_FILSTCK, TO_FILUID,
2045 TO_FILRD, TO_FILGZ, TO_FILTT, TO_FILSETU, TO_FILWR, TO_FILEX,
2046 /* binary operators */
2047 TO_STEQL, TO_STNEQ, TO_STLT, TO_STGT, TO_INTEQ, TO_INTNE, TO_INTGT,
2048 TO_INTGE, TO_INTLT, TO_INTLE, TO_FILEQ, TO_FILNT, TO_FILOT,
2049 /* not an operator */
2050 TO_NONNULL /* !TO_NONOP */
2052 typedef enum Test_op Test_op;
2054 /* Used by Test_env.isa() (order important - used to index *_tokens[] arrays) */
2056 TM_OR, /* -o or || */
2057 TM_AND, /* -a or && */
2061 TM_UNOP, /* unary operator */
2062 TM_BINOP, /* binary operator */
2063 TM_END /* end of input */
2065 typedef enum Test_meta Test_meta;
2067 #define TEF_ERROR BIT(0) /* set if we've hit an error */
2068 #define TEF_DBRACKET BIT(1) /* set if [[ .. ]] test */
2070 typedef struct test_env {
2072 const char **wp; /* used by ptest_* */
2073 XPtrV *av; /* used by dbtestp_* */
2075 const char **wp_end; /* used by ptest_* */
2076 Test_op (*isa)(struct test_env *, Test_meta);
2077 const char *(*getopnd) (struct test_env *, Test_op, bool);
2078 int (*eval)(struct test_env *, Test_op, const char *, const char *, bool);
2079 void (*error)(struct test_env *, int, const char *);
2080 int flags; /* TEF_* */
2083 extern const char * const dbtest_tokens[];
2085 Test_op test_isop(Test_meta, const char *) MKSH_A_PURE;
2086 int test_eval(Test_env *, Test_op, const char *, const char *, bool);
2087 int test_parse(Test_env *);
2089 /* tty_fd is not opened O_BINARY, it's thus never read/written */
2090 EXTERN int tty_fd E_INIT(-1); /* dup'd tty file descriptor */
2091 EXTERN bool tty_devtty; /* true if tty_fd is from /dev/tty */
2092 EXTERN mksh_ttyst tty_state; /* saved tty state */
2093 EXTERN bool tty_hasstate; /* true if tty_state is valid */
2095 extern int tty_init_fd(void); /* initialise tty_fd, tty_devtty */
2101 #define binopen2(path,flags) __extension__({ \
2102 int binopen2_fd = open((path), (flags) | O_BINARY); \
2103 if (binopen2_fd >= 0) \
2104 setmode(binopen2_fd, O_BINARY); \
2107 #define binopen3(path,flags,mode) __extension__({ \
2108 int binopen3_fd = open((path), (flags) | O_BINARY, (mode)); \
2109 if (binopen3_fd >= 0) \
2110 setmode(binopen3_fd, O_BINARY); \
2113 #define mksh_abspath(s) __extension__({ \
2114 const char *mksh_abspath_s = (s); \
2115 (mksh_abspath_s[0] == '/' || (ksh_isalphx(mksh_abspath_s[0]) && \
2116 mksh_abspath_s[1] == ':')); \
2119 #define binopen2(path,flags) open((path), (flags) | O_BINARY)
2120 #define binopen3(path,flags,mode) open((path), (flags) | O_BINARY, (mode))
2121 #define mksh_abspath(s) ((s)[0] == '/')
2124 /* be sure not to interfere with anyone else's idea about EXTERN */
2125 #ifdef EXTERN_DEFINED
2126 # undef EXTERN_DEFINED
2131 #endif /* !MKSH_INCLUDES_ONLY */