sh.h revision 167465
1/* $Header: /p/tcsh/cvsroot/tcsh/sh.h,v 3.146 2006/07/03 22:59:01 mitr Exp $ */
2/*
3 * sh.h: Catch it all globals and includes file!
4 */
5/*-
6 * Copyright (c) 1980, 1991 The Regents of the University of California.
7 * All rights reserved.
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
11 * are met:
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.
20 *
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
31 * SUCH DAMAGE.
32 */
33#ifndef _h_sh
34#define _h_sh
35
36#include "config.h"
37
38#include <stddef.h>
39#include <signal.h>
40
41#ifdef HAVE_ICONV
42# include <iconv.h>
43#endif
44
45#ifdef HAVE_STDINT_H
46# include <stdint.h>
47#endif
48
49#ifdef HAVE_INTTYPES_H
50# include <inttypes.h>
51#endif
52
53#if !defined(HAVE_STDINT_H) && !defined(HAVE_INTTYPES_H) && !defined(WINNT_NATIVE)
54typedef unsigned long intptr_t;
55#endif
56
57#ifndef EXTERN
58# define EXTERN extern
59#else /* !EXTERN */
60# ifdef WINNT_NATIVE
61#  define IZERO = 0
62#  define IZERO_STRUCT = {0}
63# endif /* WINNT_NATIVE */
64#endif /* EXTERN */
65
66#ifndef IZERO
67# define IZERO
68#endif /* IZERO */
69#ifndef IZERO_STRUCT
70# define IZERO_STRUCT
71#endif /* IZERO_STRUCT */
72
73#ifndef WINNT_NATIVE
74# define INIT_ZERO
75# define INIT_ZERO_STRUCT
76# define force_read xread
77#endif /*!WINNT_NATIVE */
78/*
79 * Sanity
80 */
81#if defined(_POSIX_SOURCE) && !defined(POSIX)
82# define POSIX
83#endif
84
85#if defined(POSIXJOBS) && !defined(BSDJOBS)
86# define BSDJOBS
87#endif
88
89#ifdef SHORT_STRINGS
90# ifdef WIDE_STRINGS
91#include <wchar.h>
92typedef wchar_t Char;
93typedef unsigned long uChar;
94typedef wint_t eChar; /* Can contain any Char value or CHAR_ERR */
95#define CHAR_ERR WEOF /* Pretty please, use bit 31... */
96#define normal_mbtowc(PWC, S, N) rt_mbtowc(PWC, S, N)
97#define reset_mbtowc() mbtowc(NULL, NULL, 0)
98# else
99typedef short Char;
100typedef unsigned short uChar;
101typedef int eChar;
102#define CHAR_ERR (-1)
103#define normal_mbtowc(PWC, S, N) ((void)(N), *(PWC) = (unsigned char)*(S), 1)
104#define reset_mbtowc() ((void)0)
105# endif
106# define SAVE(a) (Strsave(str2short(a)))
107#else
108typedef char Char;
109typedef unsigned char uChar;
110typedef int eChar;
111#define CHAR_ERR (-1)
112#define normal_mbtowc(PWC, S, N) ((void)(N), *(PWC) = (unsigned char)*(S), 1)
113#define reset_mbtowc() ((void)0)
114# define SAVE(a) (strsave(a))
115#endif
116
117/* Elide unused argument warnings */
118#define USE(a)	(void) (a)
119
120/*
121 * Return true if the path is absolute
122 */
123#if defined(WINNT_NATIVE)
124# define ABSOLUTEP(p)	((p)[0] == '/' || \
125    (Isalpha((p)[0]) && (p)[1] == ':'))
126#elif defined(__CYGWIN__)
127# define ABSOLUTEP(p)	((p)[0] == '/' || \
128    (Isalpha((p)[0]) && (p)[1] == ':' && \
129     ((p)[2] == '\0' || (p)[2] == '/')))
130#else /* !WINNT_NATIVE && !__CYGWIN__ */
131# define ABSOLUTEP(p)	(*(p) == '/')
132#endif /* WINNT_NATIVE || __CYGWIN__ */
133
134/*
135 * Fundamental definitions which may vary from system to system.
136 *
137 *	BUFSIZE		The i/o buffering size; also limits word size
138 *	MAILINTVL	How often to mailcheck; more often is more expensive
139 */
140#ifdef BUFSIZE
141# if	   BUFSIZE < 4096
142#  undef   BUFSIZE
143#  define  BUFSIZE	4096	/* buffer size should be no less than this */
144# endif
145#else
146# define   BUFSIZE	4096
147#endif /* BUFSIZE */
148
149#define FORKSLEEP	10	/* delay loop on non-interactive fork failure */
150#define	MAILINTVL	600	/* 10 minutes */
151
152#ifndef INBUFSIZE
153# define INBUFSIZE    2*BUFSIZE /* Num input characters on the command line */
154#endif /* INBUFSIZE */
155
156
157/*
158 * What our builtin echo looks like
159 */
160#define NONE_ECHO	0
161#define BSD_ECHO	1
162#define SYSV_ECHO	2
163#define BOTH_ECHO	(BSD_ECHO|SYSV_ECHO)
164
165#ifndef ECHO_STYLE
166# if SYSVREL > 0
167#  define ECHO_STYLE SYSV_ECHO
168# else /* SYSVREL == 0 */
169#  define ECHO_STYLE BSD_ECHO
170# endif /* SYSVREL */
171#endif /* ECHO_STYLE */
172
173/*
174 * The shell moves std in/out/diag and the old std input away from units
175 * 0, 1, and 2 so that it is easy to set up these standards for invoked
176 * commands.
177 */
178#define	FSAFE	5		/* We keep the first 5 descriptors untouched */
179#define	FSHTTY	15		/* /dev/tty when manip pgrps */
180#define	FSHIN	16		/* Preferred desc for shell input */
181#define	FSHOUT	17		/* ... shell output */
182#define	FSHDIAG	18		/* ... shell diagnostics */
183#define	FOLDSTD	19		/* ... old std input */
184
185#ifdef PROF
186#define	xexit(n)	done(n)
187#endif
188
189#ifdef cray
190# define word word_t           /* sys/types.h defines word.. bad move! */
191#endif
192
193#include <sys/types.h>
194
195#ifdef cray
196# undef word
197#endif
198
199/*
200 * Path separator in environment variables
201 */
202#ifndef PATHSEP
203# if defined(__EMX__) || defined(WINNT_NATIVE)
204#  define PATHSEP ';'
205# else /* unix */
206#  define PATHSEP ':'
207# endif /* __EMX__ || WINNT_NATIVE */
208#endif /* !PATHSEP */
209
210#if defined(__HP_CXD_SPP) && !defined(__hpux)
211# include <sys/cnx_stat.h>
212# define stat stat64
213# define fstat fstat64
214# define lstat lstat64
215#endif /* __HP_CXD_SPP && !__hpux */
216
217/*
218 * This macro compares the st_dev field of struct stat. On aix on ibmESA
219 * st_dev is a structure, so comparison does not work.
220 */
221#ifndef DEV_DEV_COMPARE
222# define DEV_DEV_COMPARE(x,y)   ((x) == (y))
223#endif /* DEV_DEV_COMPARE */
224
225#ifdef _SEQUENT_
226# include <sys/procstats.h>
227#endif /* _SEQUENT_ */
228#if (defined(POSIX) || SYSVREL > 0) && !defined(WINNT_NATIVE)
229# include <sys/times.h>
230#endif /* (POSIX || SYSVREL > 0) && !WINNT_NATIVE */
231
232#ifdef NLS
233# include <locale.h>
234#endif /* NLS */
235
236
237#if !defined(_MINIX) && !defined(_VMS_POSIX) && !defined(WINNT_NATIVE) && !defined(__MVS__)
238# include <sys/param.h>
239#endif /* !_MINIX && !_VMS_POSIX && !WINNT_NATIVE && !__MVS__ */
240#include <sys/stat.h>
241
242#if defined(BSDTIMES) || defined(BSDLIMIT)
243# include <sys/time.h>
244# if SYSVREL>3 && !defined(SCO) && !defined(sgi) && !defined(SNI) && !defined(sun) && !(defined(__alpha) && defined(__osf__)) && !defined(_SX) && !defined(__MVS__)
245#  include "/usr/ucbinclude/sys/resource.h"
246# else
247#  ifdef convex
248#   define sysrusage cvxrusage
249#   include <sys/sysinfo.h>
250#  else
251#   define sysrusage rusage
252#   include <sys/resource.h>
253#  endif /* convex */
254# endif /* SYSVREL>3 */
255#endif /* BSDTIMES */
256
257#ifndef WINNT_NATIVE
258# ifndef POSIX
259#  ifdef TERMIO
260#   include <termio.h>
261#  else /* SGTTY */
262#   include <sgtty.h>
263#  endif /* TERMIO */
264# else /* POSIX */
265#  ifndef _UWIN
266#   include <termios.h>
267#  else
268#   include <termio.h>
269#  endif /* _UWIN */
270#  if SYSVREL > 3
271#   undef TIOCGLTC	/* we don't need those, since POSIX has them */
272#   undef TIOCSLTC
273#   undef CSWTCH
274#   define CSWTCH _POSIX_VDISABLE	/* So job control works */
275#  endif /* SYSVREL > 3 */
276# endif /* POSIX */
277#endif /* WINNT_NATIVE */
278
279#ifdef sonyrisc
280# include <sys/ttold.h>
281#endif /* sonyrisc */
282
283#if defined(POSIX) && !defined(WINNT_NATIVE)
284# include <unistd.h>
285
286/*
287 * the gcc+protoize version of <stdlib.h>
288 * redefines malloc(), so we define the following
289 * to avoid it.
290 */
291# if defined(SYSMALLOC) || defined(linux) || defined(__GNU__) || defined(__GLIBC__) || defined(sgi) || defined(_OSD_POSIX)
292#  define NO_FIX_MALLOC
293#  include <stdlib.h>
294# else /* glibc */
295#  define _GNU_STDLIB_H
296#  define malloc __malloc
297#  define free __free
298#  define calloc __calloc
299#  define realloc __realloc
300#  include <stdlib.h>
301#  undef malloc
302#  undef free
303#  undef calloc
304#  undef realloc
305# endif /* glibc || sgi */
306#endif /* POSIX && !WINNT_NATIVE */
307#include <limits.h>
308
309#if SYSVREL > 0 || defined(_IBMR2) || defined(_MINIX) || defined(linux) || defined(__GNU__) || defined(__GLIBC__)
310# if !defined(pyr) && !defined(stellar)
311#  include <time.h>
312#  ifdef _MINIX
313#   define HZ CLOCKS_PER_SEC
314#  endif /* _MINIX */
315# endif /* !pyr && !stellar */
316#endif /* SYSVREL > 0 ||  _IBMR2 */
317
318/* In the following ifdef the DECOSF1 has been commented so that later
319 * versions of DECOSF1 will get TIOCGWINSZ. This might break older versions...
320 */
321#if !((defined(SUNOS4) || defined(_MINIX) /* || defined(DECOSF1) */) && defined(TERMIO))
322# if !defined(_VMS_POSIX) && !defined(WINNT_NATIVE)
323#  include <sys/ioctl.h>
324# endif
325#endif
326
327#if (defined(__DGUX__) && defined(POSIX)) || defined(DGUX)
328#undef CSWTCH
329#define CSWTCH _POSIX_VDISABLE
330#endif
331
332#if (!defined(FIOCLEX) && defined(SUNOS4)) || ((SYSVREL == 4) && !defined(_SEQUENT_) && !defined(SCO) && !defined(_SX)) && !defined(__MVS__)
333# include <sys/filio.h>
334#endif /* (!FIOCLEX && SUNOS4) || (SYSVREL == 4 && !_SEQUENT_ && !SCO && !_SX ) */
335
336#if !defined(_MINIX) && !defined(supermax) && !defined(WINNT_NATIVE) && !defined(IRIS4D)
337# include <sys/file.h>
338#endif	/* !_MINIX && !supermax && !WINNT_NATIVE && !defined(IRIS4D) */
339
340#if !defined(O_RDONLY) || !defined(O_NDELAY)
341# include <fcntl.h>
342#endif
343#ifndef O_LARGEFILE
344# define O_LARGEFILE 0
345#endif
346
347#include <errno.h>
348
349#include <setjmp.h>
350
351#include <stdarg.h>
352
353#ifdef HAVE_DIRENT_H
354# include <dirent.h>
355#else
356# ifdef HAVE_NDIR_H
357#  include <ndir.h>
358# else
359#  include <sys/dir.h>
360# endif
361# define dirent direct
362#endif /* HAVE_DIRENT_H */
363#ifndef HAVE_STRUCT_DIRENT_D_INO
364# define d_ino d_fileno
365#endif
366#if defined(hpux) || defined(sgi) || defined(OREO)
367# include <stdio.h>	/* So the fgetpwent() prototypes work */
368#endif /* hpux || sgi || OREO */
369#ifndef WINNT_NATIVE
370#include <pwd.h>
371#include <grp.h>
372#endif /* WINNT_NATIVE */
373#ifdef HAVE_SHADOW_H
374# include <shadow.h>
375#endif /* HAVE_SHADOW_H */
376#ifdef HAVE_AUTH_H
377# include <auth.h>
378#endif /* HAVE_AUTH_H */
379#if defined(BSD) && !defined(POSIX)
380# include <strings.h>
381# define strchr(a, b) index(a, b)
382# define strrchr(a, b) rindex(a, b)
383#else
384# include <string.h>
385#endif /* BSD */
386
387/*
388 * IRIX-5.0 has <sys/cdefs.h>, but most system include files do not
389 * include it yet, so we include it here
390 */
391#if defined(sgi) && SYSVREL > 3
392# include <sys/cdefs.h>
393#endif /* sgi && SYSVREL > 3 */
394
395#ifdef REMOTEHOST
396# ifdef ISC
397#  undef MAXHOSTNAMELEN	/* Busted headers? */
398# endif
399
400# include <netinet/in.h>
401# include <arpa/inet.h>
402# include <sys/socket.h>
403# if (defined(_SS_SIZE) || defined(_SS_MAXSIZE)) && defined(HAVE_STRUCT_SOCKADDR_STORAGE_SS_FAMILY)
404#  if !defined(__APPLE__) /* Damnit, where is getnameinfo() folks? */
405#   if !defined(sgi)
406#    if !defined(__CYGWIN__)
407#     define INET6
408#    endif /* __CYGWIN__ */
409#   endif /* sgi */
410#  endif /* __APPLE__ */
411# endif
412# include <sys/uio.h>	/* For struct iovec */
413#endif /* REMOTEHOST */
414
415#ifdef PURIFY
416/* exit normally, allowing purify to trace leaks */
417# define _exit		exit
418typedef  int		pret_t;
419#else /* !PURIFY */
420/*
421 * If your compiler complains, then you can either
422 * throw it away and get gcc or, use the following define
423 * and get rid of the typedef.
424 * [The 4.2/3BSD vax compiler does not like that]
425 * Both MULTIFLOW and PCC compilers exhbit this bug.  -- sterling@netcom.com
426 */
427# if (defined(vax) || defined(uts) || defined(MULTIFLOW) || defined(PCC)) && !defined(__GNUC__)
428#  define pret_t void
429# else /* !((vax || uts || MULTIFLOW || PCC) && !__GNUC__) */
430typedef void pret_t;
431# endif /* (vax || uts || MULTIFLOW || PCC) && !__GNUC__ */
432#endif /* PURIFY */
433
434/*
435 * ASCII vs. EBCDIC
436 */
437#if 'Z' - 'A' == 25
438# ifndef IS_ASCII
439#  define IS_ASCII
440# endif
441#endif
442
443#include "sh.types.h"
444
445#if !HAVE_DECL_GETPGRP
446# ifndef GETPGRP_VOID
447extern pid_t getpgrp (int);
448# else
449extern pid_t getpgrp (void);
450# endif
451#endif
452
453#ifndef lint
454typedef ptr_t memalign_t;
455#else
456typedef union {
457    char    am_char, *am_char_p;
458    short   am_short, *am_short_p;
459    int     am_int, *am_int_p;
460    long    am_long, *am_long_p;
461    float   am_float, *am_float_p;
462    double  am_double, *am_double_p;
463}      *memalign_t;
464
465# define malloc		lint_malloc
466# define free		lint_free
467# define realloc	lint_realloc
468# define calloc		lint_calloc
469#endif
470
471#ifdef SYSMALLOC
472# define xmalloc(i)	smalloc(i)
473# define xrealloc(p, i)	srealloc(p, i)
474# define xcalloc(n, s)	scalloc(n, s)
475# define xfree		sfree
476#else
477# define xmalloc(i)  	malloc(i)
478# define xrealloc(p, i)	realloc(p, i)
479# define xcalloc(n, s)	calloc(n, s)
480# define xfree	 	free
481#endif /* SYSMALLOC */
482#include "sh.char.h"
483#include "sh.err.h"
484#include "sh.dir.h"
485#include "sh.proc.h"
486
487#include "pathnames.h"
488
489
490/*
491 * C shell
492 *
493 * Bill Joy, UC Berkeley
494 * October, 1978; May 1980
495 *
496 * Jim Kulp, IIASA, Laxenburg Austria
497 * April, 1980
498 */
499
500#ifdef HESIOD
501# include <hesiod.h>
502#endif /* HESIOD */
503
504#ifdef REMOTEHOST
505# include <netdb.h>
506#endif /* REMOTEHOST */
507
508#ifndef MAXHOSTNAMELEN
509# ifdef HOST_NAME_MAX
510#  define MAXHOSTNAMELEN (HOST_NAME_MAX + 1)
511# elif defined(SCO) && (SYSVREL > 3)
512#  include <sys/socket.h>
513# else
514#  define MAXHOSTNAMELEN 256
515# endif
516#endif /* MAXHOSTNAMELEN */
517
518
519
520#define	eq(a, b)	(Strcmp(a, b) == 0)
521
522/* globone() flags */
523#define G_ERROR		0	/* default action: error if multiple words */
524#define G_IGNORE	1	/* ignore the rest of the words		   */
525#define G_APPEND	2	/* make a sentence by cat'ing the words    */
526
527/*
528 * Global flags
529 */
530EXTERN int    chkstop IZERO;	/* Warned of stopped jobs... allow exit */
531
532#if (defined(FIOCLEX) && defined(FIONCLEX)) || defined(F_SETFD)
533# define CLOSE_ON_EXEC
534#else
535EXTERN int    didcch IZERO;	/* Have closed unused fd's for child */
536#endif /* (FIOCLEX && FIONCLEX) || F_SETFD */
537
538EXTERN int    didfds IZERO;	/* Have setup i/o fd's for child */
539EXTERN int    doneinp IZERO;	/* EOF indicator after reset from readc */
540EXTERN int    exiterr IZERO;	/* Exit if error or non-zero exit status */
541EXTERN int    child IZERO;	/* Child shell ... errors cause exit */
542EXTERN int    haderr IZERO;	/* Reset was because of an error */
543EXTERN int    intty IZERO;	/* Input is a tty */
544EXTERN int    intact IZERO;	/* We are interactive... therefore prompt */
545EXTERN int    justpr IZERO;	/* Just print because of :p hist mod */
546EXTERN int    loginsh IZERO;	/* We are a loginsh -> .login/.logout */
547EXTERN int    neednote IZERO;	/* Need to pnotify() */
548EXTERN int    noexec IZERO;	/* Don't execute, just syntax check */
549EXTERN int    pjobs IZERO;	/* want to print jobs if interrupted */
550EXTERN int    setintr IZERO;	/* Set interrupts on/off -> Wait intr... */
551EXTERN int    havhash IZERO;	/* path hashing is available */
552EXTERN int    editing IZERO;	/* doing filename expansion and line editing */
553EXTERN int    noediting IZERO;	/* initial $term defaulted to noedit */
554EXTERN int    bslash_quote IZERO;/* PWP: tcsh-style quoting?  (in sh.c) */
555EXTERN int    isoutatty IZERO;	/* is SHOUT a tty */
556EXTERN int    isdiagatty IZERO;/* is SHDIAG a tty */
557EXTERN int    is1atty IZERO;	/* is file descriptor 1 a tty (didfds mode) */
558EXTERN int    is2atty IZERO;	/* is file descriptor 2 a tty (didfds mode) */
559EXTERN int    arun IZERO;	/* Currently running multi-line-aliases */
560EXTERN int     implicit_cd IZERO;/* implicit cd enabled?(1=enabled,2=verbose) */
561EXTERN int    inheredoc IZERO;	/* Currently parsing a heredoc */
562/* We received a window change event */
563EXTERN volatile sig_atomic_t windowchg IZERO;
564#if defined(KANJI) && defined(SHORT_STRINGS) && defined(DSPMBYTE)
565EXTERN int    dspmbyte_ls;
566#endif
567
568/*
569 * Global i/o info
570 */
571EXTERN Char   *arginp IZERO;	/* Argument input for sh -c and internal `xx` */
572EXTERN int     onelflg IZERO;	/* 2 -> need line for -t, 1 -> exit on read */
573extern Char   *ffile;		/* Name of shell file for $0 */
574extern int    dolzero;		/* if $?0 should return true... */
575
576extern char *seterr;		/* Error message from scanner/parser */
577#ifndef errno
578extern int errno;		/* Error from C library routines */
579#endif
580extern int exitset;
581/* Temp name for << shell files in /tmp, for xfree() */
582EXTERN Char   *shtemp IZERO;
583
584#ifdef BSDTIMES
585EXTERN struct timeval time0;	/* Time at which the shell started */
586EXTERN struct sysrusage ru0;
587#else
588# ifdef _SEQUENT_
589EXTERN timeval_t time0;		/* time at which shell started */
590EXTERN struct process_stats ru0;
591# else /* _SEQUENT_ */
592#  ifndef POSIX
593EXTERN time_t  time0;		/* time at which shell started */
594#  else	/* POSIX */
595EXTERN clock_t time0;		/* time at which shell started */
596EXTERN clock_t clk_tck;
597#  endif /* POSIX */
598EXTERN struct tms shtimes;	/* shell and child times for process timing */
599# endif /* _SEQUENT_ */
600EXTERN time_t seconds0;
601#endif /* BSDTIMES */
602
603#ifndef HZ
604# define HZ	100		/* for division into seconds */
605#endif
606
607/*
608 * Miscellany
609 */
610EXTERN Char   *doldol;		/* Character pid for $$ */
611EXTERN pid_t   backpid;		/* pid of the last background job */
612
613/*
614 * Ideally these should be uid_t, gid_t, pid_t. I cannot do that right now
615 * cause pid's could be unsigned and that would break our -1 flag, and
616 * uid_t and gid_t are not defined in all the systems so I would have to
617 * make special cases for them. In the future...
618 */
619EXTERN uid_t   uid, euid; 	/* Invokers real and effective */
620EXTERN gid_t   gid, egid;	/* User and group ids */
621EXTERN pid_t   opgrp,		/* Initial pgrp and tty pgrp */
622               shpgrp,		/* Pgrp of shell */
623               tpgrp;		/* Terminal process group */
624				/* If tpgrp is -1, leave tty alone! */
625
626EXTERN Char   *Prompt;		/* The actual printed prompt or NULL */
627EXTERN Char   *RPrompt;		/* Right-hand side prompt or NULL */
628
629/*
630 * To be able to redirect i/o for builtins easily, the shell moves the i/o
631 * descriptors it uses away from 0,1,2.
632 * Ideally these should be in units which are closed across exec's
633 * (this saves work) but for version 6, this is not usually possible.
634 * The desired initial values for these descriptors are defined in
635 * sh.local.h.
636 */
637EXTERN int   SHIN IZERO;	/* Current shell input (script) */
638EXTERN int   SHOUT IZERO;	/* Shell output */
639EXTERN int   SHDIAG IZERO;	/* Diagnostic output... shell errs go here */
640EXTERN int   OLDSTD IZERO;	/* Old standard input (def for cmds) */
641
642
643#if SYSVREL == 4 && defined(_UTS)
644/*
645 * From: fadden@uts.amdahl.com (Andy McFadden)
646 * we need sigsetjmp for UTS4, but not UTS2.1
647 */
648# define SIGSETJMP
649#endif
650
651/*
652 * Error control
653 *
654 * Errors in scanning and parsing set up an error message to be printed
655 * at the end and complete.  Other errors always cause a reset.
656 * Because of source commands and .cshrc we need nested error catches.
657 */
658
659#ifdef SIGSETJMP
660   typedef struct { sigjmp_buf j; } jmp_buf_t;
661# define setexit()  sigsetjmp(reslab.j)
662# define _reset()    siglongjmp(reslab.j, 1)
663#else
664   typedef struct { jmp_buf j; } jmp_buf_t;
665# define setexit()  setjmp(reslab.j)
666# define _reset()    longjmp(reslab.j, 1)
667#endif
668
669#define getexit(a) (void) ((a) = reslab)
670#define resexit(a) (void) (reslab = (a))
671
672#define cpybin(a, b) (void) ((a) = (b))
673
674extern jmp_buf_t reslab;
675
676EXTERN Char   *gointr;		/* Label for an onintr transfer */
677
678extern struct sigaction parintr;	/* Parents interrupt catch */
679extern struct sigaction parterm;	/* Parents terminate catch */
680
681/*
682 * Lexical definitions.
683 *
684 * All lexical space is allocated dynamically.
685 * The eighth/sixteenth bit of characters is used to prevent recognition,
686 * and eventually stripped.
687 */
688#define		META		0200
689#define		ASCII		0177
690#ifdef WIDE_STRINGS		/* Implies SHORT_STRINGS */
691/* 31st char bit used for 'ing (not 32nd, we want all values nonnegative) */
692# define	QUOTE		0x40000000
693# define	TRIM		0x3FFFFFFF /* Mask to strip quote bit */
694# define	UNDER		0x20000000 /* Underline flag */
695# define	BOLD		0x10000000 /* Bold flag */
696# define	STANDOUT	0x08000000 /* Standout flag */
697# define	LITERAL		0x04000000 /* Literal character flag */
698# define	ATTRIBUTES	0x3C000000 /* The bits used for attributes */
699# define	INVALID_BYTE	0x00200000 /* Invalid character on input */
700# define	CHAR		0x003FFFFF /* Mask to mask out the character */
701#elif defined (SHORT_STRINGS)
702# define	QUOTE 	((Char)	0100000)/* 16nth char bit used for 'ing */
703# define	TRIM		0073777	/* Mask to strip quote/lit bit */
704# define	UNDER		0040000	/* Underline flag */
705# define	BOLD		0020000	/* Bold flag */
706# define	STANDOUT	0010000	/* Standout flag */
707# define	LITERAL		0004000	/* Literal character flag */
708# define	ATTRIBUTES	0074000	/* The bits used for attributes */
709# define	INVALID_BYTE	0
710# define	CHAR		0000377	/* Mask to mask out the character */
711#else
712# define	QUOTE 	((Char)	0200)	/* Eighth char bit used for 'ing */
713# define	TRIM		0177	/* Mask to strip quote bit */
714# define	UNDER		0000000	/* No extra bits to do both */
715# define	BOLD		0000000	/* Bold flag */
716# define	STANDOUT	META	/* Standout flag */
717# define	LITERAL		0000000	/* Literal character flag */
718# define	ATTRIBUTES	0200	/* The bits used for attributes */
719# define	INVALID_BYTE	0
720# define	CHAR		0000177	/* Mask to mask out the character */
721#endif
722#define		CHAR_DBWIDTH	(LITERAL|(LITERAL-1))
723
724EXTERN int     AsciiOnly;	/* If set only 7 bits expected in characters */
725
726/*
727 * Each level of input has a buffered input structure.
728 * There are one or more blocks of buffered input for each level,
729 * exactly one if the input is seekable and tell is available.
730 * In other cases, the shell buffers enough blocks to keep all loops
731 * in the buffer.
732 *
733 * If (WIDE_STRINGS && cantell), fbobp is always a byte offset, but
734 * (fseekp - fbobp) and (feobp - fbobp) are character offsets (usable for
735 * fbuf indexing).
736 *
737 * If (!cantell), all offsets are character offsets; if (!WIDE_STRINGS), there
738 * is no difference between byte and character offsets.
739 */
740EXTERN struct Bin {
741    off_t   Bfseekp;		/* Seek pointer, generally != lseek() value */
742    off_t   Bfbobp;		/* Seekp of beginning of buffers */
743    off_t   Bfeobp;		/* Seekp of end of buffers */
744    int     Bfblocks;		/* Number of buffer blocks */
745    Char  **Bfbuf;		/* The array of buffer blocks */
746#ifdef WIDE_STRINGS
747    /* Number of bytes in each character if (cantell) */
748    unsigned char Bfclens[BUFSIZE + 1];
749#endif
750}       B;
751
752/*
753 * This structure allows us to seek inside aliases
754 */
755struct Ain {
756    int type;
757#define TCSH_I_SEEK 	 0		/* Invalid seek */
758#define TCSH_A_SEEK	 1		/* Alias seek */
759#define TCSH_F_SEEK	 2		/* File seek */
760#define TCSH_E_SEEK	 3		/* Eval seek */
761    union {
762	off_t _f_seek;		/* A byte offset if (cantell) */
763	Char* _c_seek;
764    } fc;
765#define f_seek fc._f_seek
766#define c_seek fc._c_seek
767    Char **a_seek;
768} ;
769
770extern int aret;		/* Type of last char returned */
771#define SEEKEQ(a, b) ((a)->type == (b)->type && \
772		      (a)->f_seek == (b)->f_seek && \
773		      (a)->a_seek == (b)->a_seek)
774
775#define	fseekp	B.Bfseekp
776#define	fbobp	B.Bfbobp
777#define	feobp	B.Bfeobp
778#define	fblocks	B.Bfblocks
779#define	fbuf	B.Bfbuf
780#define fclens  B.Bfclens
781
782/*
783 * The shell finds commands in loops by reseeking the input
784 * For whiles, in particular, it reseeks to the beginning of the
785 * line the while was on; hence the while placement restrictions.
786 */
787EXTERN struct Ain lineloc;
788
789EXTERN int    cantell;		/* Is current source tellable ? */
790
791/*
792 * Input lines are parsed into doubly linked circular
793 * lists of words of the following form.
794 */
795struct wordent {
796    Char   *word;
797    struct wordent *prev;
798    struct wordent *next;
799};
800
801/*
802 * During word building, both in the initial lexical phase and
803 * when expanding $ variable substitutions, expansion by `!' and `$'
804 * must be inhibited when reading ahead in routines which are themselves
805 * processing `!' and `$' expansion or after characters such as `\' or in
806 * quotations.  The following flags are passed to the getC routines
807 * telling them which of these substitutions are appropriate for the
808 * next character to be returned.
809 */
810#define	DODOL	1
811#define	DOEXCL	2
812#define	DOALL	DODOL|DOEXCL
813
814/*
815 * Labuf implements a general buffer for lookahead during lexical operations.
816 * Text which is to be placed in the input stream can be stuck here.
817 * We stick parsed ahead $ constructs during initial input,
818 * process id's from `$$', and modified variable values (from qualifiers
819 * during expansion in sh.dol.c) here.
820 */
821extern struct Strbuf labuf;
822EXTERN size_t lap; /* N/A if == labuf.len, index into labuf.s otherwise */
823
824/*
825 * Parser structure
826 *
827 * Each command is parsed to a tree of command structures and
828 * flags are set bottom up during this process, to be propagated down
829 * as needed during the semantics/exeuction pass (sh.sem.c).
830 */
831struct command {
832    unsigned char   t_dtyp;	/* Type of node 		 */
833#define	NODE_COMMAND	1	/* t_dcom <t_dlef >t_drit	 */
834#define	NODE_PAREN	2	/* ( t_dspr ) <t_dlef >t_drit	 */
835#define	NODE_PIPE	3	/* t_dlef | t_drit		 */
836#define	NODE_LIST	4	/* t_dlef ; t_drit		 */
837#define	NODE_OR		5	/* t_dlef || t_drit		 */
838#define	NODE_AND	6	/* t_dlef && t_drit		 */
839    unsigned char   t_nice;	/* Nice value			 */
840#ifdef apollo
841    unsigned char   t_systype;	/* System environment		 */
842#endif
843    unsigned long   t_dflg;	/* Flags, e.g. F_AMPERSAND|... 	 */
844/* save these when re-doing 	 */
845#ifndef apollo
846#define	F_SAVE	(F_NICE|F_TIME|F_NOHUP|F_HUP)
847#else
848#define	F_SAVE	(F_NICE|F_TIME|F_NOHUP||F_HUP|F_VER)
849#endif
850#define	F_AMPERSAND	(1<<0)	/* executes in background	 */
851#define	F_APPEND	(1<<1)	/* output is redirected >>	 */
852#define	F_PIPEIN	(1<<2)	/* input is a pipe		 */
853#define	F_PIPEOUT	(1<<3)	/* output is a pipe		 */
854#define	F_NOFORK	(1<<4)	/* don't fork, last ()ized cmd	 */
855#define	F_NOINTERRUPT	(1<<5)	/* should be immune from intr's */
856/* spare */
857#define	F_STDERR	(1<<7)	/* redirect unit 2 with unit 1	 */
858#define	F_OVERWRITE	(1<<8)	/* output was !			 */
859#define	F_READ		(1<<9)	/* input redirection is <<	 */
860#define	F_REPEAT	(1<<10)	/* reexec aft if, repeat,...	 */
861#define	F_NICE		(1<<11)	/* t_nice is meaningful 	 */
862#define	F_NOHUP		(1<<12)	/* nohup this command 		 */
863#define	F_TIME		(1<<13)	/* time this command 		 */
864#define F_BACKQ		(1<<14)	/* command is in ``		 */
865#define F_HUP		(1<<15)	/* hup this command		 */
866#ifdef apollo
867#define F_VER		(1<<16)	/* execute command under SYSTYPE */
868#endif
869    union {
870	Char   *T_dlef;		/* Input redirect word 		 */
871	struct command *T_dcar;	/* Left part of list/pipe 	 */
872    }       L;
873    union {
874	Char   *T_drit;		/* Output redirect word 	 */
875	struct command *T_dcdr;	/* Right part of list/pipe 	 */
876    }       R;
877#define	t_dlef	L.T_dlef
878#define	t_dcar	L.T_dcar
879#define	t_drit	R.T_drit
880#define	t_dcdr	R.T_dcdr
881    Char  **t_dcom;		/* Command/argument vector 	 */
882    struct command *t_dspr;	/* Pointer to ()'d subtree 	 */
883};
884
885
886/*
887 * The keywords for the parser
888 */
889#define	TC_BREAK	0
890#define	TC_BRKSW	1
891#define	TC_CASE		2
892#define	TC_DEFAULT 	3
893#define	TC_ELSE		4
894#define	TC_END		5
895#define	TC_ENDIF	6
896#define	TC_ENDSW	7
897#define	TC_EXIT		8
898#define	TC_FOREACH	9
899#define	TC_GOTO		10
900#define	TC_IF		11
901#define	TC_LABEL	12
902#define	TC_LET		13
903#define	TC_SET		14
904#define	TC_SWITCH	15
905#define	TC_TEST		16
906#define	TC_THEN		17
907#define	TC_WHILE	18
908
909/*
910 * These are declared here because they want to be
911 * initialized in sh.init.c (to allow them to be made readonly)
912 */
913
914#if defined(hpux) && defined(__STDC__) && !defined(__GNUC__)
915    /* Avoid hpux ansi mode spurious warnings */
916typedef void (*bfunc_t) ();
917#else
918typedef void (*bfunc_t) (Char **, struct command *);
919#endif /* hpux && __STDC__ && !__GNUC__ */
920
921extern const struct biltins {
922    const char   *bname;
923    bfunc_t bfunct;
924    int     minargs, maxargs;
925} bfunc[];
926extern int nbfunc;
927#ifdef WINNT_NATIVE
928extern struct biltins  nt_bfunc[];
929extern int nt_nbfunc;
930#endif /* WINNT_NATIVE*/
931extern int bequiet;
932
933extern struct srch {
934    const char *s_name;
935    int  s_value;
936} srchn[];
937extern int nsrchn;
938
939/*
940 * Structure defining the existing while/foreach loops at this
941 * source level.  Loops are implemented by seeking back in the
942 * input.  For foreach (fe), the word list is attached here.
943 */
944EXTERN struct whyle {
945    struct Ain   w_start;	/* Point to restart loop */
946    struct Ain   w_end;		/* End of loop (0 if unknown) */
947    Char  **w_fe, **w_fe0;	/* Current/initial wordlist for fe */
948    Char   *w_fename;		/* Name for fe */
949    struct whyle *w_next;	/* Next (more outer) loop */
950}      *whyles;
951
952/*
953 * Variable structure
954 *
955 * Aliases and variables are stored in AVL balanced binary trees.
956 */
957EXTERN struct varent {
958    Char  **vec;		/* Array of words which is the value */
959    Char   *v_name;		/* Name of variable/alias */
960    int	    v_flags;		/* Flags */
961#define VAR_ALL		-1
962#define VAR_READONLY	1
963#define VAR_READWRITE	2
964#define VAR_NOGLOB	4
965#define VAR_FIRST       32
966#define VAR_LAST        64
967    struct varent *v_link[3];	/* The links, see below */
968    int     v_bal;		/* Balance factor */
969}       shvhed IZERO_STRUCT, aliases IZERO_STRUCT;
970
971#define v_left		v_link[0]
972#define v_right		v_link[1]
973#define v_parent	v_link[2]
974
975#define adrof(v)	adrof1(v, &shvhed)
976#define varval(v)	value1(v, &shvhed)
977
978/*
979 * The following are for interfacing redo substitution in
980 * aliases to the lexical routines.
981 */
982EXTERN struct wordent *alhistp IZERO_STRUCT;/* Argument list (first) */
983EXTERN struct wordent *alhistt IZERO_STRUCT;/* Node after last in arg list */
984EXTERN Char  **alvec IZERO_STRUCT,
985	      *alvecp IZERO_STRUCT;/* The (remnants of) alias vector */
986
987/*
988 * Filename/command name expansion variables
989 */
990
991#ifdef __CYGWIN__
992# undef MAXPATHLEN
993#endif /* __CYGWIN__ */
994
995#ifndef MAXPATHLEN
996# ifdef PATH_MAX
997#  define MAXPATHLEN PATH_MAX
998# else
999#  define MAXPATHLEN 2048
1000# endif
1001#endif /* MAXPATHLEN */
1002
1003#ifndef HAVENOLIMIT
1004/*
1005 * resource limits
1006 */
1007extern struct limits {
1008    int         limconst;
1009    const char *limname;
1010    int         limdiv;
1011    const char *limscale;
1012} limits[];
1013#endif /* !HAVENOLIMIT */
1014
1015/*
1016 * History list
1017 *
1018 * Each history list entry contains an embedded wordlist
1019 * from the scanner, a number for the event, and a reference count
1020 * to aid in discarding old entries.
1021 *
1022 * Essentially "invisible" entries are put on the history list
1023 * when history substitution includes modifiers, and thrown away
1024 * at the next discarding since their event numbers are very negative.
1025 */
1026EXTERN struct Hist {
1027    struct wordent Hlex;
1028    int     Hnum;
1029    int     Href;
1030    time_t  Htime;
1031    Char   *histline;
1032    struct Hist *Hnext;
1033}       Histlist IZERO_STRUCT;
1034
1035EXTERN struct wordent paraml;	/* Current lexical word list */
1036EXTERN int     eventno;		/* Next events number */
1037EXTERN int     lastev;		/* Last event reference (default) */
1038
1039EXTERN Char    HIST;		/* history invocation character */
1040EXTERN Char    HISTSUB;		/* auto-substitute character */
1041EXTERN Char    PRCH;		/* Prompt symbol for regular users */
1042EXTERN Char    PRCHROOT;	/* Prompt symbol for root */
1043
1044/*
1045 * For operating systems with single case filenames (OS/2)
1046 */
1047#ifdef CASE_INSENSITIVE
1048# ifdef WIDE_STRINGS
1049#  define samecase(x) (towlower(x))
1050# else
1051#  define samecase(x) (isupper((unsigned char)(x)) ? \
1052		       tolower((unsigned char)(x)) : (x))
1053# endif
1054#else
1055# define samecase(x) (x)
1056#endif /* CASE_INSENSITIVE */
1057
1058/*
1059 * strings.h:
1060 */
1061#ifndef SHORT_STRINGS
1062#define Strchr(a, b)  		strchr(a, b)
1063#define Strrchr(a, b)  		strrchr(a, b)
1064#define Strcat(a, b)  		strcat(a, b)
1065#define Strncat(a, b, c) 	strncat(a, b, c)
1066#define Strcpy(a, b)  		strcpy(a, b)
1067#define Strncpy(a, b, c) 	strncpy(a, b, c)
1068#define Strlen(a)		strlen(a)
1069#define Strcmp(a, b)		strcmp(a, b)
1070#define Strncmp(a, b, c)	strncmp(a, b, c)
1071#define Strcasecmp(a, b)	strcasecmp(a, b)
1072
1073#define Strspl(a, b)		strspl(a, b)
1074#define Strnsave(a, b)		strnsave(a, b)
1075#define Strsave(a)		strsave(a)
1076#define Strend(a)		strend(a)
1077#define Strstr(a, b)		strstr(a, b)
1078
1079#define str2short(a) 		(a)
1080#define blk2short(a) 		saveblk(a)
1081#define short2blk(a) 		saveblk(a)
1082#define short2str(a) 		caching_strip(a)
1083#else
1084#ifdef WIDE_STRINGS
1085#define Strchr(a, b)		wcschr(a, b)
1086#define Strrchr(a, b)		wcsrchr(a, b)
1087#define Strcat(a, b)  		wcscat(a, b)
1088#define Strncat(a, b, c) 	wcsncat(a, b, c)
1089#define Strcpy(a, b)  		wcscpy(a, b)
1090#define Strncpy(a, b, c)	wcsncpy(a, b, c)
1091#define Strlen(a)		wcslen(a)
1092#define Strcmp(a, b)		wcscmp(a, b)
1093#define Strncmp(a, b, c)	wcsncmp(a, b, c)
1094#else
1095#define Strchr(a, b)		s_strchr(a, b)
1096#define Strrchr(a, b) 		s_strrchr(a, b)
1097#define Strcat(a, b)  		s_strcat(a, b)
1098#define Strncat(a, b, c) 	s_strncat(a, b, c)
1099#define Strcpy(a, b)  		s_strcpy(a, b)
1100#define Strncpy(a, b, c)	s_strncpy(a, b, c)
1101#define Strlen(a)		s_strlen(a)
1102#define Strcmp(a, b)		s_strcmp(a, b)
1103#define Strncmp(a, b, c)	s_strncmp(a, b, c)
1104#endif
1105#define Strcasecmp(a, b)	s_strcasecmp(a, b)
1106
1107#define Strspl(a, b)		s_strspl(a, b)
1108#define Strnsave(a, b)		s_strnsave(a, b)
1109#define Strsave(a)		s_strsave(a)
1110#define Strend(a)		s_strend(a)
1111#define Strstr(a, b)		s_strstr(a, b)
1112#endif
1113
1114/*
1115 * setname is a macro to save space (see sh.err.c)
1116 */
1117EXTERN const char   *bname;
1118
1119#define	setname(a)	(bname = (a))
1120
1121#ifdef VFORK
1122EXTERN Char   *Vsav;
1123EXTERN Char   *Vdp;
1124EXTERN Char   *Vexpath;
1125EXTERN char  **Vt;
1126#endif /* VFORK */
1127
1128EXTERN Char  **evalvec;
1129EXTERN Char   *evalp;
1130
1131extern struct mesg {
1132    const char   *iname;	/* name from /usr/include */
1133    const char *pname;		/* print name */
1134} mesg[];
1135
1136/* word_chars is set by default to WORD_CHARS but can be overridden by
1137   the worchars variable--if unset, reverts to WORD_CHARS */
1138
1139EXTERN Char   *word_chars;
1140
1141#define WORD_CHARS "*?_-.[]~="	/* default chars besides alnums in words */
1142
1143EXTERN Char   *STR_SHELLPATH;
1144
1145#ifdef _PATH_BSHELL
1146EXTERN Char   *STR_BSHELL;
1147#endif
1148EXTERN Char   *STR_WORD_CHARS;
1149EXTERN Char  **STR_environ IZERO;
1150
1151extern int     dont_free;	/* Tell free that we are in danger if we free */
1152
1153extern Char    *INVPTR;
1154extern Char    **INVPPTR;
1155
1156extern char    *progname;
1157extern int	tcsh;
1158extern int	xlate_cr;
1159extern int	output_raw;
1160extern int	lbuffed;
1161extern time_t	Htime;
1162extern int	numeof;
1163extern int 	insource;
1164extern char	linbuf[];
1165extern char 	*linp;
1166extern int	nsig;
1167#ifdef VFORK
1168extern int	use_fork;
1169#endif
1170extern int	tellwhat;
1171extern int	NoNLSRebind;
1172#if !HAVE_DECL_ENVIRON
1173extern char   **environ;
1174#endif
1175
1176#include "tc.h"
1177
1178#ifndef WINNT_NATIVE
1179# ifdef NLS_CATALOGS
1180#  if defined(linux) || defined(__GNU__) || defined(__GLIBC__)
1181#   include <locale.h>
1182#   ifdef notdef
1183#    include <localeinfo.h>	/* Has this changed ? */
1184#   endif
1185#   include <features.h>
1186#  endif
1187#  ifdef SUNOS4
1188   /* Who stole my nl_types.h? :-(
1189    * All this stuff is in the man pages, but nowhere else?
1190    * This does not link right now...
1191    */
1192   typedef void *nl_catd;
1193   extern const char * catgets (nl_catd, int, int, const char *);
1194   nl_catd catopen (const char *, int);
1195   int catclose (nl_catd);
1196#  else
1197#   ifdef __uxps__
1198#    define gettxt gettxt_ds
1199#   endif
1200#   include <nl_types.h>
1201#   ifdef __uxps__
1202#    undef gettxt
1203#   endif
1204#  endif
1205#  ifndef MCLoadBySet
1206#   define MCLoadBySet 0
1207#  endif
1208EXTERN nl_catd catd;
1209#  if defined(HAVE_ICONV) && defined(HAVE_NL_LANGINFO)
1210#   define CGETS(b, c, d)	iconv_catgets(catd, b, c, d)
1211#  else
1212#   define CGETS(b, c, d)	xcatgets(catd, b, c, d)
1213#  endif
1214#  define CSAVS(b, c, d)	strsave(CGETS(b, c, d))
1215# else
1216#  define CGETS(b, c, d)	d
1217#  define CSAVS(b, c, d)	d
1218# endif
1219#else /* WINNT_NATIVE */
1220# define CGETS(b, c, d)	nt_cgets( b, c, d)
1221# define CSAVS(b, c, d)	strsave(CGETS(b, c, d))
1222#endif /* WINNT_NATIVE */
1223
1224#if defined(FILEC)
1225extern int    filec;
1226#endif /* FILEC */
1227
1228#include "sh.decls.h"
1229/*
1230 * Since on some machines characters are unsigned, and the signed
1231 * keyword is not universally implemented, we treat all characters
1232 * as unsigned and sign extend them where we need.
1233 */
1234#define SIGN_EXTEND_CHAR(a)	(((a) & 0x80) ? ((a) | ~0x7f) : (a))
1235
1236/*
1237 * explanation for use by the "--help" option
1238 */
1239#define HELP_STRING "\
1240-b file		batch mode, read and execute commands from `file' \n\
1241-c command	run `command' from next argument \n\
1242-d		load directory stack from `~/.cshdirs' \n\
1243-Dname[=value]	define environment variable `name' to `value' (DomainOS only) \n\
1244-e		exit on any error \n\
1245-f		start faster by ignoring the start-up file \n\
1246-F		use fork() instead of vfork() when spawning (ConvexOS only) \n\
1247-i		interactive, even when input is not from a terminal \n\
1248-l		act as a login shell, must be the only option specified \n\
1249-m		load the start-up file, whether or not owned by effective user \n\
1250-n file		no execute mode, just check syntax of the following `file' \n\
1251-q		accept SIGQUIT for running under a debugger \n\
1252-s		read commands from standard input \n\
1253-t		read one line from standard input \n\
1254-v		echo commands after history substitution \n\
1255-V		like -v but including commands read from the start-up file \n\
1256-x		echo commands immediately before execution \n\
1257-X		like -x but including commands read from the start-up file \n\
1258--help		print this message and exit \n\
1259--version	print the version shell variable and exit \n\
1260\nSee the tcsh(1) manual page for detailed information.\n"
1261
1262#include "tc.nls.h"
1263
1264#endif /* _h_sh */
1265