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- /* $Header: /home/hyperion/mu/christos/src/sys/tcsh-6.00/RCS/sh.h,v 3.11 1991/08/05 23:02:13 christos Exp $ */
- /*
- * sh.h: Catch it all globals and includes file!
- */
- /*-
- * Copyright (c) 1980, 1991 The Regents of the University of California.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. All advertising materials mentioning features or use of this software
- * must display the following acknowledgement:
- * This product includes software developed by the University of
- * California, Berkeley and its contributors.
- * 4. Neither the name of the University nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
- #ifndef _h_sh
- #define _h_sh
-
-
- /*
- * Sanity
- */
- #if defined(_POSIX_SOURCE) && !defined(POSIX)
- # define POSIX
- #endif
-
- #if defined(POSIXJOBS) && !defined(BSDJOBS)
- # define BSDJOBS
- #endif
-
- #ifdef SHORT_STRINGS
- typedef short Char;
- # define SAVE(a) (Strsave(str2short(a)))
- #else
- typedef char Char;
- # define SAVE(a) (strsave(a))
- #endif
-
- /*
- * If your compiler complains, then you can either
- * throw it away and get gcc or, use the following define
- * and get rid of the typedef.
- * [The 4.2/3BSD vax compiler does not like that]
- */
- #ifdef SIGVOID
- # if (defined(vax) || defined(uts)) && !defined(__GNUC__)
- # define sigret_t void
- # else
- typedef void sigret_t;
- # endif
- #else
- typedef int sigret_t;
- #endif /* SIGVOID */
-
-
- /*
- * Fundamental definitions which may vary from system to system.
- *
- * BUFSIZ The i/o buffering size; also limits word size
- * MAILINTVL How often to mailcheck; more often is more expensive
- */
- #ifndef BUFSIZ
- #define BUFSIZ 1024 /* default buffer size */
- #endif /* BUFSIZ */
-
- #define FORKSLEEP 10 /* delay loop on non-interactive fork failure */
- #define MAILINTVL 600 /* 10 minutes */
-
- /*
- * The shell moves std in/out/diag and the old std input away from units
- * 0, 1, and 2 so that it is easy to set up these standards for invoked
- * commands.
- */
- #define FSHTTY 15 /* /dev/tty when manip pgrps */
- #define FSHIN 16 /* Preferred desc for shell input */
- #define FSHOUT 17 /* ... shell output */
- #define FSHDIAG 18 /* ... shell diagnostics */
- #define FOLDSTD 19 /* ... old std input */
-
- #ifdef PROF
- #define xexit(n) done(n)
- #endif
-
- #include <sys/types.h>
- #ifdef _SEQUENT_
- # include <sys/procstats.h>
- #endif /* _SEQUENT_ */
- #if defined(POSIX) || SVID > 0 || defined(__MINT__)
- # include <sys/times.h>
- #endif /* POSIX || SVID > 0 */
-
- #ifdef NLS
- # include <locale.h>
- #endif
-
- #include <sys/param.h>
- #include <sys/stat.h>
-
- #ifdef BSDTIMES
- # include <sys/time.h>
- # include <sys/resource.h>
- #endif /* BSDTIMES */
-
- #ifndef POSIX
- # ifdef TERMIO
- # ifdef _IBMR2
- /* Aix redefines NOFLSH when _BSD_INCLUDES is defined! */
- # undef _BSD
- # undef _BSD_INCLUDES
- # endif /* _IBMR2 */
- # include <termio.h>
- # ifdef _IBMR2
- /* but we need it. */
- # define _BSD
- # define _BSD_INCLUDES
- # endif /* _IBMR2 */
- # else
- # include <sgtty.h>
- # endif /* TERMIO */
- #else /* POSIX */
- # include <termios.h>
- #endif /* POSIX */
-
- #if defined(POSIX) || defined(__MINT__)
- /*
- * We should be using setpgid and setpgid
- * by now, but in some systems we use the
- * old routines...
- */
- # define getpgrp __getpgrp
- # define setpgrp __setpgrp
- # include <unistd.h>
- # undef getpgrp
- # undef setpgrp
- extern int getpgrp();
- extern int setpgrp();
-
- /*
- * the gcc+protoize version of <stdlib.h>
- * redefines malloc(), so we define the following
- * to avoid it.
- */
- # define _GNU_STDLIB_H
- # define malloc __malloc
- # define free __free
- # define calloc __calloc
- # define realloc __realloc
- # include <stdlib.h>
- # undef malloc
- # undef free
- # undef calloc
- # undef realloc
- # include <limits.h>
- #endif /* POSIX */
-
- #if SVID > 0
- # if !defined(pyr) || !defined(aiws)
- # include <time.h>
- # endif /* !aiws || !pyr */
- #endif /* SVID > 0 */
-
- #if !(defined(sun) && defined(TERMIO))
- # include <sys/ioctl.h>
- #endif
-
- #if !defined(FIOCLEX) && defined(sun)
- # include <sys/filio.h>
- #endif /* !FIOCLEX && sun */
-
-
- #include <sys/file.h>
-
- #if !defined(O_RDONLY) || !defined(O_NDELAY)
- # include <fcntl.h>
- #endif
-
- #include <errno.h>
-
- #include <setjmp.h>
-
- #if __STDC__
- # include <stdarg.h>
- #else
- # include <varargs.h>
- #endif
-
- #ifdef DIRENT
- # include <dirent.h>
- #else
- # ifdef hp9000s500
- # include <ndir.h>
- # else
- # include <sys/dir.h>
- # endif
- # define dirent direct
- #endif /* DIRENT */
- #ifdef hpux
- # include <stdio.h> /* So the fgetpwent() prototypes work */
- #endif
- #include <pwd.h>
- #ifdef BSD
- # include <strings.h>
- # define strchr(a, b) index(a, b)
- # define strrchr(a, b) rindex(a, b)
- #else
- # include <string.h>
- #endif /* BSD */
-
-
- /*
- * ANSIisms... These must be *after* the system include and
- * *before* our includes, so that BSDreno has time to define __P
- */
- #ifndef __P
- # if __STDC__
- # define __P(a) a
- # else
- # define __P(a) ()
- # define const
- # ifndef apollo
- # define volatile /* Apollo 'c' extensions need this */
- # endif /* apollo */
- # endif
- #endif
-
-
- #ifdef __MINT__
- #define is_dirsep(c) ((c) == '/' || (c) == '\\')
- #define is_abspath(p) (is_dirsep(*p) || (p[1] == ':'))
- #endif
-
- typedef int bool;
-
- #include "sh.types.h"
-
- #ifndef lint
- typedef ptr_t memalign_t;
- #else
- typedef union {
- char am_char, *am_char_p;
- short am_short, *am_short_p;
- int am_int, *am_int_p;
- long am_long, *am_long_p;
- float am_float, *am_float_p;
- double am_double, *am_double_p;
- } *memalign_t;
-
- # define malloc lint_malloc
- # define free lint_free
- # define realloc lint_realloc
- # define calloc lint_calloc
- #endif
-
- #ifdef SYSMALLOC
- # define xmalloc(i) Malloc(i)
- # define xrealloc(p, i) Realloc(p, i)
- # define xcalloc(n, s) Calloc(n, s)
- # define xfree(p) Free(p)
- #else
- # define xmalloc(i) malloc(i)
- # define xrealloc(p, i) realloc(p, i)
- # define xcalloc(n, s) calloc(n, s)
- # define xfree(p) free(p)
- #endif /* SYSMALLOC */
- #include "sh.char.h"
- #include "sh.err.h"
- #include "sh.dir.h"
- #include "sh.proc.h"
-
- #include "pathnames.h"
-
-
- /*
- * C shell
- *
- * Bill Joy, UC Berkeley
- * October, 1978; May 1980
- *
- * Jim Kulp, IIASA, Laxenburg Austria
- * April, 1980
- */
-
- #define SIGN_EXTEND_CHAR(a) \
- ((a) & 0x80 ? ((int) (a)) | 0xffffff00 : ((int) a) & 0x000000ff)
-
-
-
- #if !defined(MAXNAMLEN) && defined(_D_NAME_MAX)
- # define MAXNAMLEN _D_NAME_MAX
- #endif /* MAXNAMLEN */
-
- #ifndef MAXHOSTNAMELEN
- # define MAXHOSTNAMELEN 255
- #endif /* MAXHOSTNAMELEN */
-
-
-
- #define eq(a, b) (Strcmp(a, b) == 0)
-
- /* globone() flags */
- #define G_ERROR 0 /* default action: error if multiple words */
- #define G_IGNORE 1 /* ignore the rest of the words */
- #define G_APPEND 2 /* make a sentence by cat'ing the words */
-
- /*
- * Global flags
- */
- bool chkstop; /* Warned of stopped jobs... allow exit */
-
- #ifndef FIOCLEX
- bool didcch; /* Have closed unused fd's for child */
- #endif
-
- bool didfds; /* Have setup i/o fd's for child */
- bool doneinp; /* EOF indicator after reset from readc */
- bool exiterr; /* Exit if error or non-zero exit status */
- bool child; /* Child shell ... errors cause exit */
- bool haderr; /* Reset was because of an error */
- bool intty; /* Input is a tty */
- bool intact; /* We are interactive... therefore prompt */
- bool justpr; /* Just print because of :p hist mod */
- bool loginsh; /* We are a loginsh -> .login/.logout */
- bool neednote; /* Need to pnotify() */
- bool noexec; /* Don't execute, just syntax check */
- bool pjobs; /* want to print jobs if interrupted */
- bool setintr; /* Set interrupts on/off -> Wait intr... */
- bool timflg; /* Time the next waited for command */
- bool havhash; /* path hashing is available */
- bool editing; /* doing filename expansion and line editing */
- bool bslash_quote; /* PWP: tcsh-style quoting? (in sh.c) */
- bool isoutatty; /* is SHOUT a tty */
- bool isdiagatty; /* is SHDIAG a tty */
- bool is1atty; /* is file descriptor 1 a tty (didfds mode) */
- bool is2atty; /* is file descriptor 2 a tty (didfds mode) */
-
- /*
- * Global i/o info
- */
- Char *arginp; /* Argument input for sh -c and internal `xx` */
- int onelflg; /* 2 -> need line for -t, 1 -> exit on read */
- Char *ffile; /* Name of shell file for $0 */
-
- extern char *seterr; /* Error message from scanner/parser */
- extern int errno; /* Error from C library routines */
- Char *shtemp; /* Temp name for << shell files in /tmp */
-
- #ifdef BSDTIMES
- struct timeval time0; /* Time at which the shell started */
- struct rusage ru0;
- #else
- # ifdef _SEQUENT_
- timeval_t time0; /* Time at which the shell started */
- struct process_stats ru0;
- # else /* _SEQUENT_ */
- # ifndef POSIX
- time_t time0; /* time at which shell started */
- # else /* POSIX */
- clock_t time0; /* time at which shell started */
- # endif /* POSIX */
- struct tms shtimes; /* shell and child times for process timing */
- # endif /* _SEQUENT_ */
- #endif /* BSDTIMES */
-
- /*
- * Miscellany
- */
- Char *doldol; /* Character pid for $$ */
- time_t chktim; /* Time mail last checked */
-
- /*
- * Ideally these should be uid_t, gid_t, pid_t. I cannot do that right now
- * cause pid's could be unsigned and that would break our -1 flag, and
- * uid_t and gid_t are not defined in all the systems so I would have to
- * make special cases for them. In the future...
- */
- int uid; /* Invokers uid */
- int gid; /* Invokers gid */
- int opgrp, /* Initial pgrp and tty pgrp */
- shpgrp, /* Pgrp of shell */
- tpgrp; /* Terminal process group */
- /* If tpgrp is -1, leave tty alone! */
-
- Char PromptBuf[256]; /* buffer for the actual printed prompt. this
- * is used in tenex.c and sh.c for pegets.c */
-
- /*
- * To be able to redirect i/o for builtins easily, the shell moves the i/o
- * descriptors it uses away from 0,1,2.
- * Ideally these should be in units which are closed across exec's
- * (this saves work) but for version 6, this is not usually possible.
- * The desired initial values for these descriptors are defined in
- * sh.local.h.
- */
- int SHIN; /* Current shell input (script) */
- int SHOUT; /* Shell output */
- int SHDIAG; /* Diagnostic output... shell errs go here */
- int OLDSTD; /* Old standard input (def for cmds) */
-
- /*
- * Error control
- *
- * Errors in scanning and parsing set up an error message to be printed
- * at the end and complete. Other errors always cause a reset.
- * Because of source commands and .cshrc we need nested error catches.
- */
-
- extern jmp_buf reslab;
-
- /* bugfix by Jak Kirman @ Brown U.: remove the (void) cast here, see sh.c */
- #define setexit() (setjmp(reslab))
- #define reset() longjmp(reslab, 1)
- /* Should use structure assignment here */
- #define getexit(a) copy((char *)(a), (char *)reslab, sizeof reslab)
- #define resexit(a) copy((char *)reslab, ((char *)(a)), sizeof reslab)
-
- Char *gointr; /* Label for an onintr transfer */
-
- sigret_t (*parintr) (); /* Parents interrupt catch */
- sigret_t (*parterm) (); /* Parents terminate catch */
-
- #ifdef ALTESC
- Char escchar; /* character that should be used instead of \ for quoting */
- #else
- #define escchar '\\'
- #endif
-
- /*
- * Lexical definitions.
- *
- * All lexical space is allocated dynamically.
- * The eighth/sixteenth bit of characters is used to prevent recognition,
- * and eventually stripped.
- */
- #define META 0200
- #define ASCII 0177
- #ifdef SHORT_STRINGS
- # define QUOTE 0100000 /* 16nth char bit used for 'ing */
- # define TRIM 0077777 /* Mask to strip quote bit */
- # define UNDER 0040000 /* Underline flag */
- # define BOLD 0020000 /* Bold flag */
- # define STANDOUT 0010000 /* Standout flag */
- # define LITERAL 0004000 /* Literal character flag */
- # define ATTRIBUTES 0074000 /* The bits used for attributes */
- # define CHAR 0000377 /* Mask to mask out the character */
- #else
- # define QUOTE 0200 /* Eighth char bit used for 'ing */
- # define TRIM 0177 /* Mask to strip quote bit */
- # define UNDER 0000000 /* No extra bits to do both */
- # define BOLD 0000000 /* Bold flag */
- # define STANDOUT META /* Standout flag */
- # define LITERAL 0000000 /* Literal character flag */
- # define ATTRIBUTES 0200 /* The bits used for attributes */
- # define CHAR 0000177 /* Mask to mask out the character */
- #endif
-
- int AsciiOnly; /* If set only 7 bits is expected in characters */
-
- /*
- * Each level of input has a buffered input structure.
- * There are one or more blocks of buffered input for each level,
- * exactly one if the input is seekable and tell is available.
- * In other cases, the shell buffers enough blocks to keep all loops
- * in the buffer.
- */
- struct Bin {
- off_t Bfseekp; /* Seek pointer */
- off_t Bfbobp; /* Seekp of beginning of buffers */
- off_t Bfeobp; /* Seekp of end of buffers */
- int Bfblocks; /* Number of buffer blocks */
- Char **Bfbuf; /* The array of buffer blocks */
- } B;
-
- #define fseekp B.Bfseekp
- #define fbobp B.Bfbobp
- #define feobp B.Bfeobp
- #define fblocks B.Bfblocks
- #define fbuf B.Bfbuf
-
- #define btell() fseekp
-
- /*
- * The shell finds commands in loops by reseeking the input
- * For whiles, in particular, it reseeks to the beginning of the
- * line the while was on; hence the while placement restrictions.
- */
- off_t lineloc;
-
- bool cantell; /* Is current source tellable ? */
-
- /*
- * Input lines are parsed into doubly linked circular
- * lists of words of the following form.
- */
- struct wordent {
- Char *word;
- struct wordent *prev;
- struct wordent *next;
- };
-
- /*
- * During word building, both in the initial lexical phase and
- * when expanding $ variable substitutions, expansion by `!' and `$'
- * must be inhibited when reading ahead in routines which are themselves
- * processing `!' and `$' expansion or after characters such as `\' or in
- * quotations. The following flags are passed to the getC routines
- * telling them which of these substitutions are appropriate for the
- * next character to be returned.
- */
- #define DODOL 1
- #define DOEXCL 2
- #define DOALL DODOL|DOEXCL
-
- /*
- * Labuf implements a general buffer for lookahead during lexical operations.
- * Text which is to be placed in the input stream can be stuck here.
- * We stick parsed ahead $ constructs during initial input,
- * process id's from `$$', and modified variable values (from qualifiers
- * during expansion in sh.dol.c) here.
- */
- Char *lap;
-
- /*
- * Parser structure
- *
- * Each command is parsed to a tree of command structures and
- * flags are set bottom up during this process, to be propagated down
- * as needed during the semantics/exeuction pass (sh.sem.c).
- */
- struct command {
- short t_dtyp; /* Type of node */
- #define NODE_COMMAND 1 /* t_dcom <t_dlef >t_drit */
- #define NODE_PAREN 2 /* ( t_dspr ) <t_dlef >t_drit */
- #define NODE_PIPE 3 /* t_dlef | t_drit */
- #define NODE_LIST 4 /* t_dlef ; t_drit */
- #define NODE_OR 5 /* t_dlef || t_drit */
- #define NODE_AND 6 /* t_dlef && t_drit */
- short t_dflg; /* Flags, e.g. F_AMPERSAND|... */
- /* save these when re-doing */
- #ifndef apollo
- #define F_SAVE (F_NICE|F_TIME|F_NOHUP)
- #else
- #define F_SAVE (F_NICE|F_TIME|F_NOHUP|F_VER)
- #endif
- #define F_AMPERSAND (1<<0) /* executes in background */
- #define F_APPEND (1<<1) /* output is redirected >> */
- #define F_PIPEIN (1<<2) /* input is a pipe */
- #define F_PIPEOUT (1<<3) /* output is a pipe */
- #define F_NOFORK (1<<4) /* don't fork, last ()ized cmd */
- #define F_NOINTERRUPT (1<<5) /* should be immune from intr's */
- /* spare */
- #define F_STDERR (1<<7) /* redirect unit 2 with unit 1 */
- #define F_OVERWRITE (1<<8) /* output was ! */
- #define F_READ (1<<9) /* input redirection is << */
- #define F_REPEAT (1<<10) /* reexec aft if, repeat,... */
- #define F_NICE (1<<11) /* t_nice is meaningful */
- #define F_NOHUP (1<<12) /* nohup this command */
- #define F_TIME (1<<13) /* time this command */
- #ifdef apollo
- #define F_VER (1<<14) /* execute command under SYSTYPE */
- #endif
- union {
- Char *T_dlef; /* Input redirect word */
- struct command *T_dcar; /* Left part of list/pipe */
- } L;
- union {
- Char *T_drit; /* Output redirect word */
- struct command *T_dcdr; /* Right part of list/pipe */
- } R;
- #define t_dlef L.T_dlef
- #define t_dcar L.T_dcar
- #define t_drit R.T_drit
- #define t_dcdr R.T_dcdr
- Char **t_dcom; /* Command/argument vector */
- struct command *t_dspr; /* Pointer to ()'d subtree */
- short t_nice;
- #ifdef F_VER
- short t_systype;
- #endif
- };
-
-
- /*
- * The keywords for the parser
- */
- #define T_BREAK 0
- #define T_BRKSW 1
- #define T_CASE 2
- #define T_DEFAULT 3
- #define T_ELSE 4
- #define T_END 5
- #define T_ENDIF 6
- #define T_ENDSW 7
- #define T_EXIT 8
- #define T_FOREACH 9
- #define T_GOTO 10
- #define T_IF 11
- #define T_LABEL 12
- #define T_LET 13
- #define T_SET 14
- #define T_SWITCH 15
- #define T_TEST 16
- #define T_THEN 17
- #define T_WHILE 18
-
- /*
- * These are declared here because they want to be
- * initialized in sh.init.c (to allow them to be made readonly)
- */
-
- extern struct biltins {
- char *bname;
- void (*bfunct) __P((Char **, struct command *));
- int minargs, maxargs;
- } bfunc[];
- extern int nbfunc;
-
- extern struct srch {
- char *s_name;
- int s_value;
- } srchn[];
- extern int nsrchn;
-
- /*
- * Structure defining the existing while/foreach loops at this
- * source level. Loops are implemented by seeking back in the
- * input. For foreach (fe), the word list is attached here.
- */
- struct whyle {
- off_t w_start; /* Point to restart loop */
- off_t w_end; /* End of loop (0 if unknown) */
- Char **w_fe, **w_fe0; /* Current/initial wordlist for fe */
- Char *w_fename; /* Name for fe */
- struct whyle *w_next; /* Next (more outer) loop */
- } *whyles;
-
- /*
- * Variable structure
- *
- * Aliases and variables are stored in AVL balanced binary trees.
- */
- struct varent {
- Char **vec; /* Array of words which is the value */
- Char *v_name; /* Name of variable/alias */
- struct varent *v_link[3]; /* The links, see below */
- int v_bal; /* Balance factor */
- } shvhed, aliases;
-
- #define v_left v_link[0]
- #define v_right v_link[1]
- #define v_parent v_link[2]
-
- struct varent *adrof1();
-
- #define adrof(v) adrof1(v, &shvhed)
- #define value(v) value1(v, &shvhed)
-
- /*
- * The following are for interfacing redo substitution in
- * aliases to the lexical routines.
- */
- struct wordent *alhistp; /* Argument list (first) */
- struct wordent *alhistt; /* Node after last in arg list */
- Char **alvec; /* The (remnants of) alias vector */
-
- /*
- * Filename/command name expansion variables
- */
- int gflag; /* After tglob -> is globbing needed? */
-
- #define MAXVARLEN 30 /* Maximum number of char in a variable name */
-
- #ifndef MAXPATHLEN
- # define MAXPATHLEN 2048
- #endif /* MAXPATHLEN */
-
- #ifndef MAXNAMLEN
- # define MAXNAMLEN 512
- #endif /* MAXNAMLEN */
-
- /*
- * Variables for filename expansion
- */
- extern Char **gargv; /* Pointer to the (stack) arglist */
- extern long gargc; /* Number args in gargv */
-
- /*
- * Variables for command expansion.
- */
- extern Char **pargv; /* Pointer to the argv list space */
- extern long pargc; /* Count of arguments in pargv */
- Char *pargs; /* Pointer to start current word */
- long pnleft; /* Number of chars left in pargs */
- Char *pargcp; /* Current index into pargs */
-
- /*
- * History list
- *
- * Each history list entry contains an embedded wordlist
- * from the scanner, a number for the event, and a reference count
- * to aid in discarding old entries.
- *
- * Essentially "invisible" entries are put on the history list
- * when history substitution includes modifiers, and thrown away
- * at the next discarding since their event numbers are very negative.
- */
- struct Hist {
- struct wordent Hlex;
- int Hnum;
- int Href;
- time_t Htime;
- Char *histline;
- struct Hist *Hnext;
- } Histlist;
-
- struct wordent paraml; /* Current lexical word list */
- int eventno; /* Next events number */
- int lastev; /* Last event reference (default) */
-
- Char HIST; /* history invocation character */
- Char HISTSUB; /* auto-substitute character */
-
- /*
- * To print system call errors...
- */
- extern char *sys_errlist[];
- extern int errno, sys_nerr;
-
- #ifdef strerror
- # undef strerror
- #endif
- #define strerror(e) ((e) < sys_nerr && (e) >= 0 ? sys_errlist[(e)] :\
- "Unknown Error")
-
- /*
- * strings.h:
- */
- #ifndef SHORT_STRINGS
- #define Strchr(a, b) strchr(a, b)
- #define Strrchr(a, b) strrchr(a, b)
- #define Strcat(a, b) strcat(a, b)
- #define Strncat(a, b, c) strncat(a, b, c)
- #define Strcpy(a, b) strcpy(a, b)
- #define Strncpy(a, b, c) strncpy(a, b, c)
- #define Strlen(a) strlen(a)
- #define Strcmp(a, b) strcmp(a, b)
- #define Strncmp(a, b, c) strncmp(a, b, c)
-
- #define Strspl(a, b) strspl(a, b)
- #define Strsave(a) strsave(a)
- #define Strend(a) strend(a)
- #define Strstr(a, b) strstr(a, b)
-
- #define str2short(a) (a)
- #define blk2short(a) saveblk(a)
- #define short2blk(a) saveblk(a)
- #define short2str(a) strip(a)
- #else
- #define Strchr(a, b) s_strchr(a, b)
- #define Strrchr(a, b) s_strrchr(a, b)
- #define Strcat(a, b) s_strcat(a, b)
- #define Strncat(a, b, c) s_strncat(a, b, c)
- #define Strcpy(a, b) s_strcpy(a, b)
- #define Strncpy(a, b, c) s_strncpy(a, b, c)
- #define Strlen(a) s_strlen(a)
- #define Strcmp(a, b) s_strcmp(a, b)
- #define Strncmp(a, b, c) s_strncmp(a, b, c)
-
- #define Strspl(a, b) s_strspl(a, b)
- #define Strsave(a) s_strsave(a)
- #define Strend(a) s_strend(a)
- #define Strstr(a, b) s_strstr(a, b)
- #endif
-
- #define NOSTR ((Char *) 0)
- /*
- * setname is a macro to save space (see sh.err.c)
- */
- char *bname;
-
- #define setname(a) (bname = (a))
-
- #ifdef VFORK
- Char *Vsav;
- Char *Vdp;
- Char *Vexpath;
- char **Vt;
-
- #endif /* VFORK */
-
- Char **evalvec;
- Char *evalp;
-
- extern struct mesg {
- char *iname; /* name from /usr/include */
- char *pname; /* print name */
- } mesg[];
-
- /* word_chars is set by default to WORD_CHARS but can be overridden by
- the worchars variable--if unset, reverts to WORD_CHARS */
-
- Char *word_chars;
-
- #define WORD_CHARS "*?_-.[]~=" /* default chars besides alnums in words */
-
- Char *STR_SHELLPATH;
-
- #ifdef _PATH_BSHELL
- Char *STR_BSHELL;
- #endif
- Char *STR_WORD_CHARS;
- Char **STR_environ;
-
- #include "tc.h"
- #include "sh.decls.h"
-
- #endif /* _h_sh */
-