1 /* $Header: /src/pub/tcsh/sh.h,v 3.133 2005/03/25 18:46:41 kim Exp $ */
3 * sh.h: Catch it all globals and includes file!
6 * Copyright (c) 1980, 1991 The Regents of the University of California.
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in the
16 * documentation and/or other materials provided with the distribution.
17 * 3. Neither the name of the University nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
48 #ifdef HAVE_INTTYPES_H
49 # include <inttypes.h>
52 #if !defined(HAVE_STDINT_H) && !defined(HAVE_INTTYPES_H) && !defined(WINNT_NATIVE)
53 typedef unsigned long intptr_t;
57 # define EXTERN extern
61 # define IZERO_STRUCT = {0}
62 # endif /* WINNT_NATIVE */
70 #endif /* IZERO_STRUCT */
74 # define INIT_ZERO_STRUCT
75 # define force_read read
76 #endif /*!WINNT_NATIVE */
80 #if defined(_POSIX_SOURCE) && !defined(POSIX)
84 #if defined(POSIXJOBS) && !defined(BSDJOBS)
88 #if defined(POSIXSIGS) && !defined(BSDSIGS)
96 typedef unsigned long uChar;
97 typedef wint_t eChar; /* Can contain any Char value or CHAR_ERR */
98 #define CHAR_ERR WEOF /* Pretty please, use bit 31... */
99 #define normal_mbtowc(PWC, S, N) rt_mbtowc(PWC, S, N)
100 #define reset_mbtowc() mbtowc(NULL, NULL, 0)
103 typedef unsigned short uChar;
105 #define CHAR_ERR (-1)
106 #define normal_mbtowc(PWC, S, N) ((void)(N), *(PWC) = (unsigned char)*(S), 1)
107 #define reset_mbtowc() ((void)0)
109 # define SAVE(a) (Strsave(str2short(a)))
112 typedef unsigned char uChar;
114 #define CHAR_ERR (-1)
115 #define normal_mbtowc(PWC, S, N) ((void)(N), *(PWC) = (unsigned char)*(S), 1)
116 #define reset_mbtowc() ((void)0)
117 # define SAVE(a) (strsave(a))
119 #if SIZEOF_WCHAR_T >= 4
120 typedef wchar_t NLSChar;
122 /* Assumes sizeof (int) >= 4, unlike some parts of tcsh */
126 /* Elide unused argument warnings */
127 #define USE(a) (void) (a)
130 * Return true if the path is absolute
132 #if defined(WINNT_NATIVE)
133 # define ABSOLUTEP(p) ((p)[0] == '/' || \
134 (Isalpha((p)[0]) && (p)[1] == ':'))
135 #elif defined(__CYGWIN__)
136 # define ABSOLUTEP(p) ((p)[0] == '/' || \
137 (Isalpha((p)[0]) && (p)[1] == ':' && \
138 ((p)[2] == '\0' || (p)[2] == '/')))
139 #else /* !WINNT_NATIVE && !__CYGWIN__ */
140 # define ABSOLUTEP(p) (*(p) == '/')
141 #endif /* WINNT_NATIVE || __CYGWIN__ */
144 * Fundamental definitions which may vary from system to system.
146 * BUFSIZE The i/o buffering size; also limits word size
147 * MAILINTVL How often to mailcheck; more often is more expensive
152 # define BUFSIZE 4096 /* buffer size should be no less than this */
155 # define BUFSIZE 4096
158 #define FORKSLEEP 10 /* delay loop on non-interactive fork failure */
159 #define MAILINTVL 600 /* 10 minutes */
162 # define INBUFSIZE 2*BUFSIZE /* Num input characters on the command line */
163 #endif /* INBUFSIZE */
167 * What our builtin echo looks like
172 #define BOTH_ECHO (BSD_ECHO|SYSV_ECHO)
176 # define ECHO_STYLE SYSV_ECHO
177 # else /* SYSVREL == 0 */
178 # define ECHO_STYLE BSD_ECHO
179 # endif /* SYSVREL */
180 #endif /* ECHO_STYLE */
183 * The shell moves std in/out/diag and the old std input away from units
184 * 0, 1, and 2 so that it is easy to set up these standards for invoked
187 #define FSAFE 5 /* We keep the first 5 descriptors untouched */
188 #define FSHTTY 15 /* /dev/tty when manip pgrps */
189 #define FSHIN 16 /* Preferred desc for shell input */
190 #define FSHOUT 17 /* ... shell output */
191 #define FSHDIAG 18 /* ... shell diagnostics */
192 #define FOLDSTD 19 /* ... old std input */
195 #define xexit(n) done(n)
199 # define word word_t /* sys/types.h defines word.. bad move! */
202 #include <sys/types.h>
209 * Path separator in environment variables
212 # if defined(__EMX__) || defined(WINNT_NATIVE)
216 # endif /* __EMX__ || WINNT_NATIVE */
217 #endif /* !PATHSEP */
219 #if defined(__HP_CXD_SPP) && !defined(__hpux)
220 # include <sys/cnx_stat.h>
222 # define fstat fstat64
223 # define lstat lstat64
224 #endif /* __HP_CXD_SPP && !__hpux */
227 * This macro compares the st_dev field of struct stat. On aix on ibmESA
228 * st_dev is a structure, so comparison does not work.
230 #ifndef DEV_DEV_COMPARE
231 # define DEV_DEV_COMPARE(x,y) ((x) == (y))
232 #endif /* DEV_DEV_COMPARE */
235 # include <sys/procstats.h>
236 #endif /* _SEQUENT_ */
237 #if (defined(POSIX) || SYSVREL > 0) && !defined(WINNT_NATIVE)
238 # include <sys/times.h>
239 #endif /* (POSIX || SYSVREL > 0) && !WINNT_NATIVE */
246 #if !defined(_MINIX) && !defined(_VMS_POSIX) && !defined(WINNT_NATIVE) && !defined(__MVS__)
247 # include <sys/param.h>
248 #endif /* !_MINIX && !_VMS_POSIX && !WINNT_NATIVE && !__MVS__ */
249 #include <sys/stat.h>
251 #if defined(BSDTIMES) || defined(BSDLIMIT)
252 # include <sys/time.h>
253 # if SYSVREL>3 && !defined(SCO) && !defined(sgi) && !defined(SNI) && !defined(sun) && !(defined(__alpha) && defined(__osf__)) && !defined(_SX) && !defined(__MVS__)
254 # include "/usr/ucbinclude/sys/resource.h"
257 # define sysrusage cvxrusage
258 # include <sys/sysinfo.h>
260 # define sysrusage rusage
261 # include <sys/resource.h>
263 # endif /* SYSVREL>3 */
264 #endif /* BSDTIMES */
275 # include <termios.h>
280 # undef TIOCGLTC /* we don't need those, since POSIX has them */
283 # define CSWTCH _POSIX_VDISABLE /* So job control works */
284 # endif /* SYSVREL > 3 */
286 #endif /* WINNT_NATIVE */
289 # include <sys/ttold.h>
290 #endif /* sonyrisc */
292 #if defined(POSIX) && !defined(WINNT_NATIVE)
296 * the gcc+protoize version of <stdlib.h>
297 * redefines malloc(), so we define the following
300 # if defined(SYSMALLOC) || defined(linux) || defined(__GNU__) || defined(__GLIBC__) || defined(sgi) || defined(_OSD_POSIX)
301 # define NO_FIX_MALLOC
304 # define _GNU_STDLIB_H
305 # define malloc __malloc
307 # define calloc __calloc
308 # define realloc __realloc
314 # endif /* glibc || sgi */
316 #endif /* POSIX && !WINNT_NATIVE */
318 #if SYSVREL > 0 || defined(_IBMR2) || defined(_MINIX) || defined(linux) || defined(__GNU__) || defined(__GLIBC__)
319 # if !defined(pyr) && !defined(stellar)
322 # define HZ CLOCKS_PER_SEC
324 # endif /* !pyr && !stellar */
325 #endif /* SYSVREL > 0 || _IBMR2 */
327 /* In the following ifdef the DECOSF1 has been commented so that later
328 * versions of DECOSF1 will get TIOCGWINSZ. This might break older versions...
330 #if !((defined(SUNOS4) || defined(_MINIX) /* || defined(DECOSF1) */) && defined(TERMIO))
331 # if !defined(COHERENT) && !defined(_VMS_POSIX) && !defined(WINNT_NATIVE)
332 # include <sys/ioctl.h>
336 #if (defined(__DGUX__) && defined(POSIX)) || defined(DGUX)
338 #define CSWTCH _POSIX_VDISABLE
341 #if (!defined(FIOCLEX) && defined(SUNOS4)) || ((SYSVREL == 4) && !defined(_SEQUENT_) && !defined(SCO) && !defined(_SX)) && !defined(__MVS__)
342 # include <sys/filio.h>
343 #endif /* (!FIOCLEX && SUNOS4) || (SYSVREL == 4 && !_SEQUENT_ && !SCO && !_SX ) */
345 #if !defined(_MINIX) && !defined(COHERENT) && !defined(supermax) && !defined(WINNT_NATIVE) && !defined(IRIS4D)
346 # include <sys/file.h>
347 #endif /* !_MINIX && !COHERENT && !supermax && !WINNT_NATIVE && !defined(IRIS4D) */
349 #if !defined(O_RDONLY) || !defined(O_NDELAY)
353 # define O_LARGEFILE 0
360 #if defined(PROTOTYPES)
364 # include "mi.varargs.h"
366 # include <varargs.h>
376 # include <sys/dir.h>
378 # define dirent direct
379 #endif /* HAVE_DIRENT_H */
380 #ifndef HAVE_STRUCT_DIRENT_D_INO
381 # define d_ino d_fileno
383 #if defined(hpux) || defined(sgi) || defined(OREO) || defined(COHERENT)
384 # include <stdio.h> /* So the fgetpwent() prototypes work */
385 #endif /* hpux || sgi || OREO || COHERENT */
389 #endif /* WINNT_NATIVE */
392 #endif /* HAVE_SHADOW_H */
395 #endif /* HAVE_AUTH_H */
396 #if defined(BSD) && !defined(POSIX)
397 # include <strings.h>
398 # define strchr(a, b) index(a, b)
399 # define strrchr(a, b) rindex(a, b)
405 * IRIX-5.0 has <sys/cdefs.h>, but most system include files do not
406 * include it yet, so we include it here
408 #if defined(sgi) && SYSVREL > 3
409 # include <sys/cdefs.h>
410 #endif /* sgi && SYSVREL > 3 */
414 # undef MAXHOSTNAMELEN /* Busted headers? */
417 # include <netinet/in.h>
418 # include <arpa/inet.h>
419 # include <sys/socket.h>
420 # if (defined(_SS_SIZE) || defined(_SS_MAXSIZE)) && defined(HAVE_STRUCT_SOCKADDR_STORAGE_SS_FAMILY)
421 # if !defined(__APPLE__) /* Damnit, where is getnameinfo() folks? */
425 # endif /* __APPLE__ */
427 # include <sys/uio.h> /* For struct iovec */
428 #endif /* REMOTEHOST */
431 * ANSIisms... These must be *after* the system include and
432 * *before* our includes, so that BSDreno has time to define __P
436 # if defined(PROTOTYPES)
445 /* exit normally, allowing purify to trace leaks */
450 * If your compiler complains, then you can either
451 * throw it away and get gcc or, use the following define
452 * and get rid of the typedef.
453 * [The 4.2/3BSD vax compiler does not like that]
454 * Both MULTIFLOW and PCC compilers exhbit this bug. -- sterling@netcom.com
456 # if (defined(vax) || defined(uts) || defined(MULTIFLOW) || defined(PCC)) && !defined(__GNUC__)
458 # else /* !((vax || uts || MULTIFLOW || PCC) && !__GNUC__) */
460 # endif /* (vax || uts || MULTIFLOW || PCC) && !__GNUC__ */
472 #include "sh.types.h"
474 #ifndef __NetBSD__ /* XXX */
476 # ifndef GETPGRP_VOID
477 extern pid_t getpgrp __P((int));
479 extern pid_t getpgrp __P((void));
481 #endif /* !WINNT_NATIVE */
484 typedef RETSIGTYPE (*signalfun_t) __P((int));
487 typedef ptr_t memalign_t;
490 char am_char, *am_char_p;
491 short am_short, *am_short_p;
492 int am_int, *am_int_p;
493 long am_long, *am_long_p;
494 float am_float, *am_float_p;
495 double am_double, *am_double_p;
498 # define malloc lint_malloc
499 # define free lint_free
500 # define realloc lint_realloc
501 # define calloc lint_calloc
505 extern memalign_t DebugMalloc __P((unsigned, char *, int));
506 extern memalign_t DebugRealloc __P((ptr_t, unsigned, char *, int));
507 extern memalign_t DebugCalloc __P((unsigned, unsigned, char *, int));
508 extern void DebugFree __P((ptr_t, char *, int));
509 # define xmalloc(i) DebugMalloc(i, __FILE__, __LINE__)
510 # define xrealloc(p, i)((p) ? DebugRealloc(p, i, __FILE__, __LINE__) : \
511 DebugMalloc(i, __FILE__, __LINE__))
512 # define xcalloc(n, s) DebugCalloc(n, s, __FILE__, __LINE__)
513 # define xfree(p) if (p) DebugFree(p, __FILE__, __LINE__)
516 # define xmalloc(i) smalloc(i)
517 # define xrealloc(p, i) srealloc(p, i)
518 # define xcalloc(n, s) scalloc(n, s)
519 # define xfree(p) sfree(p)
521 # define xmalloc(i) malloc(i)
522 # define xrealloc(p, i) realloc(p, i)
523 # define xcalloc(n, s) calloc(n, s)
524 # define xfree(p) free(p)
525 # endif /* SYSMALLOC */
532 #include "pathnames.h"
538 * Bill Joy, UC Berkeley
539 * October, 1978; May 1980
541 * Jim Kulp, IIASA, Laxenburg Austria
545 #if !defined(MAXNAMLEN) && defined(_D_NAME_MAX)
546 # define MAXNAMLEN _D_NAME_MAX
547 #endif /* MAXNAMLEN */
555 #endif /* REMOTEHOST */
557 #ifndef MAXHOSTNAMELEN
558 # if defined(SCO) && (SYSVREL > 3)
559 # include <sys/socket.h>
561 # define MAXHOSTNAMELEN 256
563 #endif /* MAXHOSTNAMELEN */
567 #define eq(a, b) (Strcmp(a, b) == 0)
569 /* globone() flags */
570 #define G_ERROR 0 /* default action: error if multiple words */
571 #define G_IGNORE 1 /* ignore the rest of the words */
572 #define G_APPEND 2 /* make a sentence by cat'ing the words */
577 EXTERN int chkstop IZERO; /* Warned of stopped jobs... allow exit */
579 #if (defined(FIOCLEX) && defined(FIONCLEX)) || defined(F_SETFD)
580 # define CLOSE_ON_EXEC
582 EXTERN int didcch IZERO; /* Have closed unused fd's for child */
583 #endif /* (FIOCLEX && FIONCLEX) || F_SETFD */
585 EXTERN int didfds IZERO; /* Have setup i/o fd's for child */
586 EXTERN int doneinp IZERO; /* EOF indicator after reset from readc */
587 EXTERN int exiterr IZERO; /* Exit if error or non-zero exit status */
588 EXTERN int child IZERO; /* Child shell ... errors cause exit */
589 EXTERN int haderr IZERO; /* Reset was because of an error */
590 EXTERN int intty IZERO; /* Input is a tty */
591 EXTERN int intact IZERO; /* We are interactive... therefore prompt */
592 EXTERN int justpr IZERO; /* Just print because of :p hist mod */
593 EXTERN int loginsh IZERO; /* We are a loginsh -> .login/.logout */
594 EXTERN int neednote IZERO; /* Need to pnotify() */
595 EXTERN int noexec IZERO; /* Don't execute, just syntax check */
596 EXTERN int pjobs IZERO; /* want to print jobs if interrupted */
597 EXTERN int setintr IZERO; /* Set interrupts on/off -> Wait intr... */
598 EXTERN int timflg IZERO; /* Time the next waited for command */
599 EXTERN int havhash IZERO; /* path hashing is available */
600 EXTERN int editing IZERO; /* doing filename expansion and line editing */
601 EXTERN int noediting IZERO; /* initial $term defaulted to noedit */
602 EXTERN int bslash_quote IZERO;/* PWP: tcsh-style quoting? (in sh.c) */
603 EXTERN int isoutatty IZERO; /* is SHOUT a tty */
604 EXTERN int isdiagatty IZERO;/* is SHDIAG a tty */
605 EXTERN int is1atty IZERO; /* is file descriptor 1 a tty (didfds mode) */
606 EXTERN int is2atty IZERO; /* is file descriptor 2 a tty (didfds mode) */
607 EXTERN int arun IZERO; /* Currently running multi-line-aliases */
608 EXTERN int implicit_cd IZERO;/* implicit cd enabled?(1=enabled,2=verbose) */
609 EXTERN int inheredoc IZERO; /* Currently parsing a heredoc */
610 EXTERN int windowchg IZERO; /* We received a window change event */
611 #if defined(KANJI) && defined(SHORT_STRINGS) && defined(DSPMBYTE)
612 EXTERN int dspmbyte_ls;
618 EXTERN Char *arginp IZERO; /* Argument input for sh -c and internal `xx` */
619 EXTERN int onelflg IZERO; /* 2 -> need line for -t, 1 -> exit on read */
620 extern Char *ffile; /* Name of shell file for $0 */
621 extern int dolzero; /* if $?0 should return true... */
623 extern char *seterr; /* Error message from scanner/parser */
625 extern int errno; /* Error from C library routines */
628 EXTERN Char *shtemp IZERO; /* Temp name for << shell files in /tmp */
631 EXTERN struct timeval time0; /* Time at which the shell started */
632 EXTERN struct sysrusage ru0;
635 EXTERN timeval_t time0; /* time at which shell started */
636 EXTERN struct process_stats ru0;
637 # else /* _SEQUENT_ */
639 EXTERN time_t time0; /* time at which shell started */
641 EXTERN clock_t time0; /* time at which shell started */
642 EXTERN clock_t clk_tck;
644 EXTERN struct tms shtimes; /* shell and child times for process timing */
645 # endif /* _SEQUENT_ */
646 EXTERN long seconds0;
647 #endif /* BSDTIMES */
650 # define HZ 100 /* for division into seconds */
656 EXTERN Char *doldol; /* Character pid for $$ */
657 EXTERN int backpid; /* pid of the last background job */
660 * Ideally these should be uid_t, gid_t, pid_t. I cannot do that right now
661 * cause pid's could be unsigned and that would break our -1 flag, and
662 * uid_t and gid_t are not defined in all the systems so I would have to
663 * make special cases for them. In the future...
665 EXTERN uid_t uid, euid; /* Invokers real and effective */
666 EXTERN gid_t gid, egid; /* User and group ids */
667 EXTERN pid_t opgrp, /* Initial pgrp and tty pgrp */
668 shpgrp, /* Pgrp of shell */
669 tpgrp; /* Terminal process group */
670 /* If tpgrp is -1, leave tty alone! */
672 EXTERN Char PromptBuf[INBUFSIZE*2]; /* buffer for the actual printed prompt.
673 * this must be large enough to contain
674 * the input line and the prompt, in
675 * case a correction occurred...
677 EXTERN Char RPromptBuf[INBUFSIZE]; /* buffer for right-hand side prompt */
680 * To be able to redirect i/o for builtins easily, the shell moves the i/o
681 * descriptors it uses away from 0,1,2.
682 * Ideally these should be in units which are closed across exec's
683 * (this saves work) but for version 6, this is not usually possible.
684 * The desired initial values for these descriptors are defined in
687 EXTERN int SHIN IZERO; /* Current shell input (script) */
688 EXTERN int SHOUT IZERO; /* Shell output */
689 EXTERN int SHDIAG IZERO; /* Diagnostic output... shell errs go here */
690 EXTERN int OLDSTD IZERO; /* Old standard input (def for cmds) */
693 #if SYSVREL == 4 && defined(_UTS)
695 * From: fadden@uts.amdahl.com (Andy McFadden)
696 * we need sigsetjmp for UTS4, but not UTS2.1
704 * Errors in scanning and parsing set up an error message to be printed
705 * at the end and complete. Other errors always cause a reset.
706 * Because of source commands and .cshrc we need nested error catches.
709 #ifdef NO_STRUCT_ASSIGNMENT
712 typedef sigjmp_buf jmp_buf_t;
713 /* bugfix by Jak Kirman @ Brown U.: remove the (void) cast here, see sh.c */
714 # define setexit() sigsetjmp(reslab)
715 # define reset() siglongjmp(reslab, 1)
717 typedef jmp_buf jmp_buf_t;
718 /* bugfix by Jak Kirman @ Brown U.: remove the (void) cast here, see sh.c */
719 # define setexit() setjmp(reslab)
720 # define reset() longjmp(reslab, 1)
722 # define getexit(a) (void) memmove((ptr_t)&(a), (ptr_t)&reslab, sizeof(reslab))
723 # define resexit(a) (void) memmove((ptr_t)&reslab, (ptr_t)&(a), sizeof(reslab))
725 # define cpybin(a, b) (void) memmove((ptr_t)&(a), (ptr_t)&(b), sizeof(Bin))
730 typedef struct { sigjmp_buf j; } jmp_buf_t;
731 # define setexit() sigsetjmp(reslab.j)
732 # define reset() siglongjmp(reslab.j, 1)
734 typedef struct { jmp_buf j; } jmp_buf_t;
735 # define setexit() setjmp(reslab.j)
736 # define reset() longjmp(reslab.j, 1)
739 # define getexit(a) (void) ((a) = reslab)
740 # define resexit(a) (void) (reslab = (a))
742 # define cpybin(a, b) (void) ((a) = (b))
744 #endif /* NO_STRUCT_ASSIGNMENT */
746 extern jmp_buf_t reslab;
748 EXTERN Char *gointr; /* Label for an onintr transfer */
750 extern signalfun_t parintr; /* Parents interrupt catch */
751 extern signalfun_t parterm; /* Parents terminate catch */
754 * Lexical definitions.
756 * All lexical space is allocated dynamically.
757 * The eighth/sixteenth bit of characters is used to prevent recognition,
758 * and eventually stripped.
762 #ifdef WIDE_STRINGS /* Implies SHORT_STRINGS */
763 /* 31st char bit used for 'ing (not 32nd, we want all values nonnegative) */
764 # define QUOTE 0x40000000
765 # define TRIM 0x3FFFFFFF /* Mask to strip quote bit */
766 # define UNDER 0x20000000 /* Underline flag */
767 # define BOLD 0x10000000 /* Bold flag */
768 # define STANDOUT 0x08000000 /* Standout flag */
769 # define LITERAL 0x04000000 /* Literal character flag */
770 # define ATTRIBUTES 0x3C000000 /* The bits used for attributes */
771 # define INVALID_BYTE 0x00200000 /* Invalid character on input */
772 # define CHAR 0x003FFFFF /* Mask to mask out the character */
773 #elif defined (SHORT_STRINGS)
774 # define QUOTE ((Char) 0100000)/* 16nth char bit used for 'ing */
775 # define TRIM 0073777 /* Mask to strip quote/lit bit */
776 # define UNDER 0040000 /* Underline flag */
777 # define BOLD 0020000 /* Bold flag */
778 # define STANDOUT 0010000 /* Standout flag */
779 # define LITERAL 0004000 /* Literal character flag */
780 # define ATTRIBUTES 0074000 /* The bits used for attributes */
781 # define INVALID_BYTE 0
782 # define CHAR 0000377 /* Mask to mask out the character */
784 # define QUOTE ((Char) 0200) /* Eighth char bit used for 'ing */
785 # define TRIM 0177 /* Mask to strip quote bit */
786 # define UNDER 0000000 /* No extra bits to do both */
787 # define BOLD 0000000 /* Bold flag */
788 # define STANDOUT META /* Standout flag */
789 # define LITERAL 0000000 /* Literal character flag */
790 # define ATTRIBUTES 0200 /* The bits used for attributes */
791 # define INVALID_BYTE 0
792 # define CHAR 0000177 /* Mask to mask out the character */
794 #define CHAR_DBWIDTH (LITERAL|(LITERAL-1))
796 EXTERN int AsciiOnly; /* If set only 7 bits expected in characters */
799 * Each level of input has a buffered input structure.
800 * There are one or more blocks of buffered input for each level,
801 * exactly one if the input is seekable and tell is available.
802 * In other cases, the shell buffers enough blocks to keep all loops
806 off_t Bfseekp; /* Seek pointer, generally != lseek() value */
807 off_t Bfbobp; /* Seekp of beginning of buffers */
808 off_t Bfeobp; /* Seekp of end of buffers */
809 int Bfblocks; /* Number of buffer blocks */
810 Char **Bfbuf; /* The array of buffer blocks */
812 /* Number of bytes in each character if (cantell) */
813 unsigned char Bfclens[BUFSIZE + 1];
818 * This structure allows us to seek inside aliases
822 #define TCSH_I_SEEK 0 /* Invalid seek */
823 #define TCSH_A_SEEK 1 /* Alias seek */
824 #define TCSH_F_SEEK 2 /* File seek */
825 #define TCSH_E_SEEK 3 /* Eval seek */
830 #define f_seek fc._f_seek
831 #define c_seek fc._c_seek
835 extern int aret; /* Type of last char returned */
836 #define SEEKEQ(a, b) ((a)->type == (b)->type && \
837 (a)->f_seek == (b)->f_seek && \
838 (a)->a_seek == (b)->a_seek)
840 #define fseekp B.Bfseekp
841 #define fbobp B.Bfbobp
842 #define feobp B.Bfeobp
843 #define fblocks B.Bfblocks
845 #define fclens B.Bfclens
848 * The shell finds commands in loops by reseeking the input
849 * For whiles, in particular, it reseeks to the beginning of the
850 * line the while was on; hence the while placement restrictions.
852 EXTERN struct Ain lineloc;
854 EXTERN int cantell; /* Is current source tellable ? */
857 * Input lines are parsed into doubly linked circular
858 * lists of words of the following form.
862 struct wordent *prev;
863 struct wordent *next;
867 * During word building, both in the initial lexical phase and
868 * when expanding $ variable substitutions, expansion by `!' and `$'
869 * must be inhibited when reading ahead in routines which are themselves
870 * processing `!' and `$' expansion or after characters such as `\' or in
871 * quotations. The following flags are passed to the getC routines
872 * telling them which of these substitutions are appropriate for the
873 * next character to be returned.
877 #define DOALL DODOL|DOEXCL
880 * Labuf implements a general buffer for lookahead during lexical operations.
881 * Text which is to be placed in the input stream can be stuck here.
882 * We stick parsed ahead $ constructs during initial input,
883 * process id's from `$$', and modified variable values (from qualifiers
884 * during expansion in sh.dol.c) here.
891 * Each command is parsed to a tree of command structures and
892 * flags are set bottom up during this process, to be propagated down
893 * as needed during the semantics/exeuction pass (sh.sem.c).
896 unsigned char t_dtyp; /* Type of node */
897 #define NODE_COMMAND 1 /* t_dcom <t_dlef >t_drit */
898 #define NODE_PAREN 2 /* ( t_dspr ) <t_dlef >t_drit */
899 #define NODE_PIPE 3 /* t_dlef | t_drit */
900 #define NODE_LIST 4 /* t_dlef ; t_drit */
901 #define NODE_OR 5 /* t_dlef || t_drit */
902 #define NODE_AND 6 /* t_dlef && t_drit */
903 unsigned char t_nice; /* Nice value */
905 unsigned char t_systype; /* System environment */
907 unsigned long t_dflg; /* Flags, e.g. F_AMPERSAND|... */
908 /* save these when re-doing */
910 #define F_SAVE (F_NICE|F_TIME|F_NOHUP|F_HUP)
912 #define F_SAVE (F_NICE|F_TIME|F_NOHUP||F_HUP|F_VER)
914 #define F_AMPERSAND (1<<0) /* executes in background */
915 #define F_APPEND (1<<1) /* output is redirected >> */
916 #define F_PIPEIN (1<<2) /* input is a pipe */
917 #define F_PIPEOUT (1<<3) /* output is a pipe */
918 #define F_NOFORK (1<<4) /* don't fork, last ()ized cmd */
919 #define F_NOINTERRUPT (1<<5) /* should be immune from intr's */
921 #define F_STDERR (1<<7) /* redirect unit 2 with unit 1 */
922 #define F_OVERWRITE (1<<8) /* output was ! */
923 #define F_READ (1<<9) /* input redirection is << */
924 #define F_REPEAT (1<<10) /* reexec aft if, repeat,... */
925 #define F_NICE (1<<11) /* t_nice is meaningful */
926 #define F_NOHUP (1<<12) /* nohup this command */
927 #define F_TIME (1<<13) /* time this command */
928 #define F_BACKQ (1<<14) /* command is in `` */
929 #define F_HUP (1<<15) /* hup this command */
931 #define F_VER (1<<16) /* execute command under SYSTYPE */
934 Char *T_dlef; /* Input redirect word */
935 struct command *T_dcar; /* Left part of list/pipe */
938 Char *T_drit; /* Output redirect word */
939 struct command *T_dcdr; /* Right part of list/pipe */
941 #define t_dlef L.T_dlef
942 #define t_dcar L.T_dcar
943 #define t_drit R.T_drit
944 #define t_dcdr R.T_dcdr
945 Char **t_dcom; /* Command/argument vector */
946 struct command *t_dspr; /* Pointer to ()'d subtree */
951 * The keywords for the parser
974 * These are declared here because they want to be
975 * initialized in sh.init.c (to allow them to be made readonly)
978 #if defined(hpux) && defined(__STDC__) && !defined(__GNUC__)
979 /* Avoid hpux ansi mode spurious warnings */
980 typedef void (*bfunc_t) ();
982 typedef void (*bfunc_t) __P((Char **, struct command *));
983 #endif /* hpux && __STDC__ && !__GNUC__ */
985 extern struct biltins {
988 int minargs, maxargs;
992 extern struct biltins nt_bfunc[];
993 extern int nt_nbfunc;
994 #endif /* WINNT_NATIVE*/
1004 * Structure defining the existing while/foreach loops at this
1005 * source level. Loops are implemented by seeking back in the
1006 * input. For foreach (fe), the word list is attached here.
1008 EXTERN struct whyle {
1009 struct Ain w_start; /* Point to restart loop */
1010 struct Ain w_end; /* End of loop (0 if unknown) */
1011 Char **w_fe, **w_fe0; /* Current/initial wordlist for fe */
1012 Char *w_fename; /* Name for fe */
1013 struct whyle *w_next; /* Next (more outer) loop */
1017 * Variable structure
1019 * Aliases and variables are stored in AVL balanced binary trees.
1021 EXTERN struct varent {
1022 Char **vec; /* Array of words which is the value */
1023 Char *v_name; /* Name of variable/alias */
1024 int v_flags; /* Flags */
1026 #define VAR_READONLY 1
1027 #define VAR_READWRITE 2
1028 #define VAR_NOGLOB 4
1029 #define VAR_FIRST 32
1031 struct varent *v_link[3]; /* The links, see below */
1032 int v_bal; /* Balance factor */
1033 } shvhed IZERO_STRUCT, aliases IZERO_STRUCT;
1035 #define v_left v_link[0]
1036 #define v_right v_link[1]
1037 #define v_parent v_link[2]
1039 #define adrof(v) adrof1(v, &shvhed)
1040 #define varval(v) value1(v, &shvhed)
1043 * The following are for interfacing redo substitution in
1044 * aliases to the lexical routines.
1046 EXTERN struct wordent *alhistp IZERO_STRUCT;/* Argument list (first) */
1047 EXTERN struct wordent *alhistt IZERO_STRUCT;/* Node after last in arg list */
1048 EXTERN Char **alvec IZERO_STRUCT,
1049 *alvecp IZERO_STRUCT;/* The (remnants of) alias vector */
1052 * Filename/command name expansion variables
1054 EXTERN int gflag; /* After tglob -> is globbing needed? */
1056 #define MAXVARLEN 256 /* Maximum number of char in a variable name */
1060 #endif /* __CYGWIN__ */
1063 # define MAXPATHLEN 2048
1064 #endif /* MAXPATHLEN */
1067 # define MAXNAMLEN 512
1068 #endif /* MAXNAMLEN */
1074 extern struct limits {
1076 const char *limname;
1078 const char *limscale;
1080 #endif /* !HAVENOLIMIT */
1083 * Variables for filename expansion
1085 extern Char **gargv; /* Pointer to the (stack) arglist */
1086 extern int gargc; /* Number args in gargv */
1089 * Variables for command expansion.
1091 extern Char **pargv; /* Pointer to the argv list space */
1092 EXTERN Char *pargs; /* Pointer to start current word */
1093 EXTERN long pnleft; /* Number of chars left in pargs */
1094 EXTERN Char *pargcp; /* Current index into pargs */
1099 * Each history list entry contains an embedded wordlist
1100 * from the scanner, a number for the event, and a reference count
1101 * to aid in discarding old entries.
1103 * Essentially "invisible" entries are put on the history list
1104 * when history substitution includes modifiers, and thrown away
1105 * at the next discarding since their event numbers are very negative.
1107 EXTERN struct Hist {
1108 struct wordent Hlex;
1114 } Histlist IZERO_STRUCT;
1116 EXTERN struct wordent paraml; /* Current lexical word list */
1117 EXTERN int eventno; /* Next events number */
1118 EXTERN int lastev; /* Last event reference (default) */
1120 EXTERN Char HIST; /* history invocation character */
1121 EXTERN Char HISTSUB; /* auto-substitute character */
1122 EXTERN Char PRCH; /* Prompt symbol for regular users */
1123 EXTERN Char PRCHROOT; /* Prompt symbol for root */
1126 * For operating systems with single case filenames (OS/2)
1128 #ifdef CASE_INSENSITIVE
1129 # ifdef WIDE_STRINGS
1130 # define samecase(x) (towlower(x))
1132 # define samecase(x) (isupper((unsigned char)(x)) ? \
1133 tolower((unsigned char)(x)) : (x))
1136 # define samecase(x) (x)
1137 #endif /* CASE_INSENSITIVE */
1142 #ifndef SHORT_STRINGS
1143 #define Strchr(a, b) strchr(a, b)
1144 #define Strrchr(a, b) strrchr(a, b)
1145 #define Strcat(a, b) strcat(a, b)
1146 #define Strncat(a, b, c) strncat(a, b, c)
1147 #define Strcpy(a, b) strcpy(a, b)
1148 #define Strncpy(a, b, c) strncpy(a, b, c)
1149 #define Strlen(a) strlen(a)
1150 #define Strcmp(a, b) strcmp(a, b)
1151 #define Strncmp(a, b, c) strncmp(a, b, c)
1152 #define Strcasecmp(a, b) strcasecmp(a, b)
1154 #define Strspl(a, b) strspl(a, b)
1155 #define Strsave(a) strsave(a)
1156 #define Strend(a) strend(a)
1157 #define Strstr(a, b) strstr(a, b)
1159 #define str2short(a) (a)
1160 #define blk2short(a) saveblk(a)
1161 #define short2blk(a) saveblk(a)
1162 #define short2str(a) strip(a)
1165 #define Strchr(a, b) wcschr(a, b)
1166 #define Strrchr(a, b) wcsrchr(a, b)
1167 #define Strcat(a, b) wcscat(a, b)
1168 #define Strncat(a, b, c) wcsncat(a, b, c)
1169 #define Strcpy(a, b) wcscpy(a, b)
1170 #define Strncpy(a, b, c) wcsncpy(a, b, c)
1171 #define Strlen(a) wcslen(a)
1172 #define Strcmp(a, b) wcscmp(a, b)
1173 #define Strncmp(a, b, c) wcsncmp(a, b, c)
1175 #define Strchr(a, b) s_strchr(a, b)
1176 #define Strrchr(a, b) s_strrchr(a, b)
1177 #define Strcat(a, b) s_strcat(a, b)
1178 #define Strncat(a, b, c) s_strncat(a, b, c)
1179 #define Strcpy(a, b) s_strcpy(a, b)
1180 #define Strncpy(a, b, c) s_strncpy(a, b, c)
1181 #define Strlen(a) s_strlen(a)
1182 #define Strcmp(a, b) s_strcmp(a, b)
1183 #define Strncmp(a, b, c) s_strncmp(a, b, c)
1185 #define Strcasecmp(a, b) s_strcasecmp(a, b)
1187 #define Strspl(a, b) s_strspl(a, b)
1188 #define Strsave(a) s_strsave(a)
1189 #define Strend(a) s_strend(a)
1190 #define Strstr(a, b) s_strstr(a, b)
1194 * setname is a macro to save space (see sh.err.c)
1196 EXTERN const char *bname;
1198 #define setname(a) (bname = (a))
1203 EXTERN Char *Vexpath;
1207 EXTERN Char **evalvec;
1210 extern struct mesg {
1211 const char *iname; /* name from /usr/include */
1212 const char *pname; /* print name */
1215 /* word_chars is set by default to WORD_CHARS but can be overridden by
1216 the worchars variable--if unset, reverts to WORD_CHARS */
1218 EXTERN Char *word_chars;
1220 #define WORD_CHARS "*?_-.[]~=" /* default chars besides alnums in words */
1222 EXTERN Char *STR_SHELLPATH;
1225 EXTERN Char *STR_BSHELL;
1227 EXTERN Char *STR_WORD_CHARS;
1228 EXTERN Char **STR_environ IZERO;
1230 extern int dont_free; /* Tell free that we are in danger if we free */
1232 extern Char *INVPTR;
1233 extern Char **INVPPTR;
1235 extern char *progname;
1237 extern int xlate_cr;
1238 extern int output_raw;
1240 extern time_t Htime;
1242 extern int insource;
1243 extern char linbuf[];
1247 extern int use_fork;
1249 extern int tellwhat;
1250 extern int NoNLSRebind;
1254 #ifndef WINNT_NATIVE
1255 # ifdef NLS_CATALOGS
1256 # if defined(linux) || defined(__GNU__) || defined(__GLIBC__)
1257 # include <locale.h>
1259 # include <localeinfo.h> /* Has this changed ? */
1261 # include <features.h>
1264 /* Who stole my nl_types.h? :-(
1265 * All this stuff is in the man pages, but nowhere else?
1266 * This does not link right now...
1268 typedef void *nl_catd;
1269 extern const char * catgets __P((nl_catd, int, int, const char *));
1270 nl_catd catopen __P((const char *, int));
1271 int catclose __P((nl_catd));
1274 # define gettxt gettxt_ds
1276 # include <nl_types.h>
1281 # ifndef MCLoadBySet
1282 # define MCLoadBySet 0
1284 EXTERN nl_catd catd;
1286 # define CGETS(b, c, d) iconv_catgets(catd, b, c, d)
1288 # define CGETS(b, c, d) catgets(catd, b, c, d)
1290 # define CSAVS(b, c, d) strsave(CGETS(b, c, d))
1292 # define CGETS(b, c, d) d
1293 # define CSAVS(b, c, d) d
1295 #else /* WINNT_NATIVE */
1296 # define CGETS(b, c, d) nt_cgets( b, c, d)
1297 # define CSAVS(b, c, d) strsave(CGETS(b, c, d))
1298 #endif /* WINNT_NATIVE */
1304 #include "sh.decls.h"
1306 * Since on some machines characters are unsigned, and the signed
1307 * keyword is not universally implemented, we treat all characters
1308 * as unsigned and sign extend them where we need.
1310 #define SIGN_EXTEND_CHAR(a) (((a) & 0x80) ? ((a) | ~0x7f) : (a))
1313 * explanation for use by the "--help" option
1315 #define HELP_STRING "\
1316 -b file batch mode, read and execute commands from `file' \n\
1317 -c command run `command' from next argument \n\
1318 -d load directory stack from `~/.cshdirs' \n\
1319 -Dname[=value] define environment variable `name' to `value' (DomainOS only) \n\
1320 -e exit on any error \n\
1321 -f start faster by ignoring the start-up file \n\
1322 -F use fork() instead of vfork() when spawning (ConvexOS only) \n\
1323 -i interactive, even when input is not from a terminal \n\
1324 -l act as a login shell, must be the only option specified \n\
1325 -m load the start-up file, whether or not owned by effective user \n\
1326 -n file no execute mode, just check syntax of the following `file' \n\
1327 -q accept SIGQUIT for running under a debugger \n\
1328 -s read commands from standard input \n\
1329 -t read one line from standard input \n\
1330 -v echo commands after history substitution \n\
1331 -V like -v but including commands read from the start-up file \n\
1332 -x echo commands immediately before execution \n\
1333 -X like -x but including commands read from the start-up file \n\
1334 --help print this message and exit \n\
1335 --version print the version shell variable and exit \n\
1336 \nSee the tcsh(1) manual page for detailed information.\n"