diff options
Diffstat (limited to 'bin/csh/csh.h')
| -rw-r--r-- | bin/csh/csh.h | 551 |
1 files changed, 0 insertions, 551 deletions
diff --git a/bin/csh/csh.h b/bin/csh/csh.h deleted file mode 100644 index cf6723f..0000000 --- a/bin/csh/csh.h +++ /dev/null @@ -1,551 +0,0 @@ -/*- - * Copyright (c) 1980, 1991, 1993 - * 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. - * - * @(#)csh.h 8.1 (Berkeley) 5/31/93 - * $FreeBSD$ - */ - -/* - * 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 FSHERR 18 /* ... shell diagnostics */ -#define FOLDSTD 19 /* ... old std input */ - -#ifdef PROF -#define xexit(n) done(n) -#endif - -#ifdef SHORT_STRINGS -typedef short Char; - -#define SAVE(a) (Strsave(str2short(a))) -#else -typedef char Char; - -#define SAVE(a) (strsave(a)) -#endif - -/* - * Make sure a variable is not stored in a register by taking its address - * This is used where variables might be clobbered by longjmp. - */ -#define UNREGISTER(a) (void) &a - -typedef void *ioctl_t; /* Third arg of ioctl */ - -typedef void *ptr_t; - -#include "const.h" -#include "char.h" -#include "errnum.h" - -#define xmalloc(i) Malloc(i) -#define xrealloc(p, i) Realloc(p, i) -#define xcalloc(n, s) Calloc(n, s) -#define xfree(p) Free(p) - -#include <stdio.h> -FILE *cshin, *cshout, *csherr; - -#define isdir(d) ((d.st_mode & S_IFMT) == S_IFDIR) - -typedef int bool; - -#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 */ -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 */ - -#ifdef FILEC -bool filec; /* doing filename expansion */ -#endif - -/* - * 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 */ - -char *seterr; /* Error message from scanner/parser */ -Char *shtemp; /* Temp name for << shell files in /tmp */ - -#include <sys/types.h> -#include <sys/time.h> -#include <sys/resource.h> - -struct timeval time0; /* Time at which the shell started */ -struct rusage ru0; - -/* - * Miscellany - */ -Char *doldol; /* Character pid for $$ */ -int backpid; /* Pid of the last background process */ -int uid, euid; /* Invokers uid */ -int gid, egid; /* Invokers gid */ -time_t chktim; /* Time mail last checked */ -int shpgrp; /* Pgrp of shell */ -int tpgrp; /* Terminal process group */ - -/* If tpgrp is -1, leave tty alone! */ -int opgrp; /* Initial pgrp and tty pgrp */ - - -/* - * 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 F{SHIN,...}. - */ -int SHIN; /* Current shell input (script) */ -int SHOUT; /* Shell output */ -int SHERR; /* 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. - */ - -#include <setjmp.h> -jmp_buf reslab; - -#define setexit() (setjmp(reslab)) -#define reset() longjmp(reslab, 1) - /* Should use structure assignment here */ -#define getexit(a) memmove((char *)(a), (char *)reslab, sizeof reslab) -#define resexit(a) memmove((char *)reslab, (char *)(a), sizeof reslab) - -Char *gointr; /* Label for an onintr transfer */ - -#include <signal.h> -sig_t parintr; /* Parents interrupt catch */ -sig_t parterm; /* Parents terminate catch */ - -/* - * 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 CHAR 0377 -#define QUOTE 0100000 /* 16nth char bit used for 'ing */ -#define TRIM 0077777 /* Mask to strip quote bit */ -#else -#define CHAR 0177 -#define QUOTE 0200 /* Eighth char bit used for 'ing */ -#define TRIM 0177 /* Mask to strip quote bit */ -#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; - -/* - * This structure allows us to seek inside aliases - */ -struct Ain { - int type; -#define I_SEEK -1 /* Invalid seek */ -#define A_SEEK 0 /* Alias seek */ -#define F_SEEK 1 /* File seek */ -#define E_SEEK 2 /* Eval seek */ - union { - off_t _f_seek; - Char* _c_seek; - } fc; -#define f_seek fc._f_seek -#define c_seek fc._c_seek - Char **a_seek; -} ; -extern int aret; /* What was the last character returned */ -#define SEEKEQ(a, b) ((a)->type == (b)->type && \ - (a)->f_seek == (b)->f_seek && \ - (a)->a_seek == (b)->a_seek) - -#define fseekp B.Bfseekp -#define fbobp B.Bfbobp -#define feobp B.Bfeobp -#define fblocks B.Bfblocks -#define fbuf B.Bfbuf - -/* - * 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. - */ -struct Ain 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/execution 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|... */ -#define F_SAVE (F_NICE|F_TIME|F_NOHUP) /* save these when re-doing */ - -#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 */ - 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 */ - int t_nice; -}; - - -/* - * 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 *)); - short minargs, maxargs; -} bfunc[]; -extern int nbfunc; - -extern struct srch { - char *s_name; - short s_value; -} srchn[]; -extern int nsrchn; - -/* - * 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 - -/* - * 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 { - struct Ain w_start; /* Point to restart loop */ - struct Ain 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] - -#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, *alvecp; /* 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 */ - -/* - * 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; - 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 */ - -/* - * 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 - -/* - * setname is a macro to save space (see sh.err.c) - */ -char *bname; - -#define setname(a) (bname = (a)) - -Char *Vsav; -Char *Vdp; -Char *Vexpath; -char **Vt; - -Char **evalvec; -Char *evalp; - -/* word_chars is set by default to WORD_CHARS but can be overridden by - the wordchars variable--if unset, reverts to WORD_CHARS */ - -Char *word_chars; - -#define WORD_CHARS "*?_-.[]~=" /* default chars besides alnums in words */ - -Char *STR_SHELLPATH; - -#include <paths.h> -#ifdef _PATH_BSHELL -Char *STR_BSHELL; -#endif -Char *STR_WORD_CHARS; -Char **STR_environ; |
