/* $Header: /afs/dev.mit.edu/project/sipb/repository/third/tcsh/sh.h,v 1.1.1.2 1997/12/19 02:59:43 nathanw 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 #include "config.h" #ifndef EXTERN # define EXTERN extern #endif /* EXTERN */ /* * Sanity */ #if defined(_POSIX_SOURCE) && !defined(POSIX) # define POSIX #endif #if defined(POSIXJOBS) && !defined(BSDJOBS) # define BSDJOBS #endif #if defined(POSIXSIGS) && !defined(BSDSIGS) # define BSDSIGS #endif #ifdef SHORT_STRINGS typedef short Char; # define SAVE(a) (Strsave(str2short(a))) #else typedef char Char; # define SAVE(a) (strsave(a)) #endif #ifdef PURIFY /* Re-define those, cause purify might use them */ # define xprintf printf # define xsprintf sprintf # define xvprintf vprintf /* exit normally, allowing purify to trace leaks */ # define _exit exit #endif /* PURIFY */ /* * 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. * * BUFSIZE The i/o buffering size; also limits word size * MAILINTVL How often to mailcheck; more often is more expensive */ #ifdef BUFSIZE # if BUFSIZE < 1024 # undef BUFSIZE # define BUFSIZE 1024 /* buffer size should be no less than this */ # endif #else # define BUFSIZE 1024 #endif /* BUFSIZE */ #define FORKSLEEP 10 /* delay loop on non-interactive fork failure */ #define MAILINTVL 600 /* 10 minutes */ #ifndef INBUFSIZE # define INBUFSIZE 2*BUFSIZE /* Num input characters on the command line */ #endif /* INBUFSIZE */ /* * What our builtin echo looks like */ #define NONE_ECHO 0 #define BSD_ECHO 1 #define SYSV_ECHO 2 #define BOTH_ECHO (BSD_ECHO|SYSV_ECHO) #ifndef ECHO_STYLE # if SYSVREL > 0 # define ECHO_STYLE SYSV_ECHO # else /* SYSVREL == 0 */ # define ECHO_STYLE BSD_ECHO # endif /* SYSVREL */ #endif /* ECHO_STYLE */ /* * 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 #ifdef cray # define word word_t /* sys/types.h defines word.. bad move! */ #endif #include #ifdef cray # undef word #endif /* * Path separator in environment variables */ #ifndef PATHSEP # ifdef __EMX__ # define PATHSEP ';' # else /* unix */ # define PATHSEP ':' # endif /* __EMX__ */ #endif /* !PATHSEP */ /* * This macro compares the st_dev field of struct stat. On aix on ibmESA * st_dev is a structure, so comparison does not work. */ #ifndef DEV_DEV_COMPARE # define DEV_DEV_COMPARE(x,y) ((x) == (y)) #endif /* DEV_DEV_COMPARE */ #ifdef _SEQUENT_ # include #endif /* _SEQUENT_ */ #if defined(POSIX) || SYSVREL > 0 # include #endif /* POSIX || SYSVREL > 0 */ #ifdef NLS # include #endif #if !defined(_MINIX) && !defined(_VMS_POSIX) #include #endif /* _MINIX && vmsposix atp */ #include #if defined(BSDTIMES) || defined(BSDLIMIT) # include # include #endif /* BSDTIMES */ #ifndef POSIX # ifdef TERMIO # include # else /* SGTTY */ # include # endif /* TERMIO */ #else /* POSIX */ # include # if SYSVREL > 3 # undef TIOCGLTC /* we don't need those, since POSIX has them */ # undef TIOCSLTC # undef CSWTCH # define CSWTCH _POSIX_VDISABLE /* So job control works */ # endif /* SYSVREL > 3 */ #endif /* POSIX */ #ifdef DGUX # undef CSWTCH # define CSWTCH _POSIX_VDISABLE /* So job control works */ #endif /* DGUX */ #ifdef sonyrisc # include #endif /* sonyrisc */ #ifdef POSIX /* * 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 # undef getpgrp # undef setpgrp extern int getpgrp(); extern int setpgrp(); /* * the gcc+protoize version of * redefines malloc(), so we define the following * to avoid it. */ # ifdef linux # define NO_FIX_MALLOC # include # else /* linux */ # define _GNU_STDLIB_H # define malloc __malloc # define free __free # define calloc __calloc # define realloc __realloc # include # undef malloc # undef free # undef calloc # undef realloc # endif /* linux */ # include #endif /* POSIX */ #if SYSVREL > 0 || defined(_IBMR2) || defined(_MINIX) # if !defined(pyr) && !defined(stellar) # include # ifdef _MINIX # define HZ CLOCKS_PER_SEC # endif /* _MINIX */ # endif /* !pyr && !stellar */ #endif /* SYSVREL > 0 || _IBMR2 */ #if !((defined(SUNOS4) || defined(_MINIX)) && defined(TERMIO)) # if !defined(COHERENT) && !defined(_VMS_POSIX) # include # endif #endif #if !defined(FIOCLEX) && defined(SUNOS4) # include #endif /* !FIOCLEX && SUNOS4 */ #if !defined(_MINIX) && !defined(COHERENT) # include #endif /* !_MINIX && !COHERENT */ #if !defined(O_RDONLY) || !defined(O_NDELAY) # include #endif #include #include #if __STDC__ # include #else #ifdef _MINIX # include "mi.varargs.h" #else # include #endif /* _MINIX */ #endif #ifdef DIRENT # include #else # ifdef hp9000s500 # include # else # include # endif # define dirent direct #endif /* DIRENT */ #if defined(hpux) || defined(sgi) || defined(OREO) || defined(COHERENT) # include /* So the fgetpwent() prototypes work */ #endif /* hpux || sgi || OREO || COHERENT */ #include #ifdef PW_SHADOW # include #endif /* PW_SHADOW */ #ifdef PW_AUTH # include #endif /* PW_AUTH */ #ifdef BSD # include # define strchr(a, b) index(a, b) # define strrchr(a, b) rindex(a, b) #else # include #endif /* BSD */ /* * IRIX-5.0 has , but most system include files do not * include it yet, so we include it here */ #if defined(sgi) && SYSVREL > 3 # include #endif /* sgi && SYSVREL > 3 */ /* * 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 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 MDEBUG extern memalign_t DebugMalloc __P((unsigned, char *, int)); extern memalign_t DebugRealloc __P((ptr_t, unsigned, char *, int)); extern memalign_t DebugCalloc __P((unsigned, unsigned, char *, int)); extern void DebugFree __P((ptr_t, char *, int)); # define xmalloc(i) DebugMalloc(i, __FILE__, __LINE__) # define xrealloc(p, i)((p) ? DebugRealloc(p, i, __FILE__, __LINE__) : \ DebugMalloc(i, __FILE__, __LINE__)) # define xcalloc(n, s) DebugCalloc(n, s, __FILE__, __LINE__) # define xfree(p) if (p) DebugFree(p, __FILE__, __LINE__) #else # ifdef SYSMALLOC # define xmalloc(i) smalloc(i) # define xrealloc(p, i) srealloc(p, i) # define xcalloc(n, s) scalloc(n, s) # define xfree(p) sfree(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 */ #endif /* MDEBUG */ #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 */ #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 */ EXTERN bool chkstop; /* Warned of stopped jobs... allow exit */ #if (defined(FIOCLEX) && defined(FIONCLEX)) || defined(F_SETFD) # define CLOSE_ON_EXEC #else EXTERN bool didcch; /* Have closed unused fd's for child */ #endif /* (FIOCLEX && FIONCLEX) || F_SETFD */ EXTERN bool didfds; /* Have setup i/o fd's for child */ EXTERN bool doneinp; /* EOF indicator after reset from readc */ EXTERN bool exiterr; /* Exit if error or non-zero exit status */ EXTERN bool child; /* Child shell ... errors cause exit */ EXTERN bool haderr; /* Reset was because of an error */ EXTERN bool intty; /* Input is a tty */ EXTERN bool intact; /* We are interactive... therefore prompt */ EXTERN bool justpr; /* Just print because of :p hist mod */ EXTERN bool loginsh; /* We are a loginsh -> .login/.logout */ EXTERN bool neednote; /* Need to pnotify() */ EXTERN bool noexec; /* Don't execute, just syntax check */ EXTERN bool pjobs; /* want to print jobs if interrupted */ EXTERN bool setintr; /* Set interrupts on/off -> Wait intr... */ EXTERN bool timflg; /* Time the next waited for command */ EXTERN bool havhash; /* path hashing is available */ EXTERN bool editing; /* doing filename expansion and line editing */ EXTERN bool bslash_quote; /* PWP: tcsh-style quoting? (in sh.c) */ EXTERN bool isoutatty; /* is SHOUT a tty */ EXTERN bool isdiagatty; /* is SHDIAG a tty */ EXTERN bool is1atty; /* is file descriptor 1 a tty (didfds mode) */ EXTERN bool is2atty; /* is file descriptor 2 a tty (didfds mode) */ /* * Global i/o info */ EXTERN Char *arginp; /* Argument input for sh -c and internal `xx` */ EXTERN int onelflg; /* 2 -> need line for -t, 1 -> exit on read */ extern Char *ffile; /* Name of shell file for $0 */ extern char *seterr; /* Error message from scanner/parser */ extern int errno; /* Error from C library routines */ EXTERN Char *shtemp; /* Temp name for << shell files in /tmp */ #ifdef BSDTIMES EXTERN struct timeval time0; /* Time at which the shell started */ EXTERN struct rusage ru0; #else # ifdef _SEQUENT_ EXTERN timeval_t time0; /* time at which shell started */ EXTERN struct process_stats ru0; # else /* _SEQUENT_ */ # ifndef POSIX EXTERN time_t time0; /* time at which shell started */ # else /* POSIX */ EXTERN clock_t time0; /* time at which shell started */ EXTERN clock_t clk_tck; # endif /* POSIX */ EXTERN struct tms shtimes; /* shell and child times for process timing */ # endif /* _SEQUENT_ */ #endif /* BSDTIMES */ #ifndef HZ # define HZ 100 /* for division into seconds */ #endif /* * Miscellany */ EXTERN Char *doldol; /* Character pid for $$ */ EXTERN int backpid; /* pid of the last background job */ /* * 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... */ EXTERN int uid, euid, /* Invokers real and effective */ gid, egid; /* User and group ids */ EXTERN int opgrp, /* Initial pgrp and tty pgrp */ shpgrp, /* Pgrp of shell */ tpgrp; /* Terminal process group */ /* If tpgrp is -1, leave tty alone! */ EXTERN Char PromptBuf[INBUFSIZE*2]; /* buffer for the actual printed prompt. * this must be large enough to contain * the input line and the prompt, in * case a correction occured... */ /* * 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. */ EXTERN int SHIN; /* Current shell input (script) */ EXTERN int SHOUT; /* Shell output */ EXTERN int SHDIAG; /* Diagnostic output... shell errs go here */ EXTERN 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. */ #ifdef NO_STRUCT_ASSIGNMENT typedef jmp_buf jmp_buf_t; /* bugfix by Jak Kirman @ Brown U.: remove the (void) cast here, see sh.c */ # define setexit() setjmp(reslab) # define reset() longjmp(reslab, 1) # define getexit(a) (void) memmove((ptr_t)(a), (ptr_t)reslab, sizeof(reslab)) # define resexit(a) (void) memmove((ptr_t)reslab, ((ptr_t)(a)), sizeof(reslab)) #else typedef struct { jmp_buf j; } jmp_buf_t; # define setexit() setjmp(reslab.j) # define reset() longjmp(reslab.j, 1) # define getexit(a) ((a) = reslab) # define resexit(a) (reslab = (a)) #endif /* NO_STRUCT_ASSIGNMENT */ extern jmp_buf_t reslab; EXTERN Char *gointr; /* Label for an onintr transfer */ EXTERN sigret_t (*parintr) (); /* Parents interrupt catch */ EXTERN sigret_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 QUOTE ((Char) 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 ((Char) 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 EXTERN int AsciiOnly; /* If set only 7 bits 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. */ EXTERN 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 */ off_t f_seek; Char **a_seek; } ; extern int aret; /* Type of last char 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. */ EXTERN struct Ain lineloc; EXTERN 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. */ EXTERN 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_drit */ #define NODE_PAREN 2 /* ( t_dspr ) 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 */ #define F_BACKQ (1<<14) /* command is in `` */ #ifdef apollo #define F_VER (1<<15) /* 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 TC_BREAK 0 #define TC_BRKSW 1 #define TC_CASE 2 #define TC_DEFAULT 3 #define TC_ELSE 4 #define TC_END 5 #define TC_ENDIF 6 #define TC_ENDSW 7 #define TC_EXIT 8 #define TC_FOREACH 9 #define TC_GOTO 10 #define TC_IF 11 #define TC_LABEL 12 #define TC_LET 13 #define TC_SET 14 #define TC_SWITCH 15 #define TC_TEST 16 #define TC_THEN 17 #define TC_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; #if defined(hpux) && defined(__STDC__) && !defined(__GNUC__) /* Avoid hpux ansi mode spurious warnings */ void (*bfunct) (); #else void (*bfunct) __P((Char **, struct command *)); #endif /* hpux && __STDC__ && !__GNUC__ */ 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. */ EXTERN 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. */ EXTERN 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. */ EXTERN struct wordent *alhistp; /* Argument list (first) */ EXTERN struct wordent *alhistt; /* Node after last in arg list */ EXTERN Char **alvec, *alvecp; /* The (remnants of) alias vector */ /* * Filename/command name expansion variables */ EXTERN 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 */ #ifndef HAVENOLIMIT /* * resource limits */ extern struct limits { int limconst; char *limname; int limdiv; char *limscale; } limits[]; #endif /* !HAVENOLIMIT */ /* * 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 Char *pargs; /* Pointer to start current word */ EXTERN long pnleft; /* Number of chars left in pargs */ EXTERN 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. */ EXTERN struct Hist { struct wordent Hlex; int Hnum; int Href; time_t Htime; Char *histline; struct Hist *Hnext; } Histlist; EXTERN struct wordent paraml; /* Current lexical word list */ EXTERN int eventno; /* Next events number */ EXTERN int lastev; /* Last event reference (default) */ EXTERN Char HIST; /* history invocation character */ EXTERN 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) */ EXTERN char *bname; #define setname(a) (bname = (a)) #ifdef VFORK EXTERN Char *Vsav; EXTERN Char *Vdp; EXTERN Char *Vexpath; EXTERN char **Vt; #endif /* VFORK */ EXTERN Char **evalvec; EXTERN Char *evalp; extern struct mesg { char *iname; /* name from /usr/include */ char *pname; /* print name */ } mesg[]; extern int mesg_size; /* number of entries in mesg, may be fewer than NSIG */ /* word_chars is set by default to WORD_CHARS but can be overridden by the worchars variable--if unset, reverts to WORD_CHARS */ EXTERN Char *word_chars; #define WORD_CHARS "*?_-.[]~=" /* default chars besides alnums in words */ EXTERN Char *STR_SHELLPATH; #ifdef _PATH_BSHELL EXTERN Char *STR_BSHELL; #endif EXTERN Char *STR_WORD_CHARS; EXTERN Char **STR_environ; extern int dont_free; /* Tell free that we are in danger if we free */ #include "tc.h" #include "sh.decls.h" #endif /* _h_sh */