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/*
* system.h
*
* definitions & function prototype declarations for "system.c"
*/
#ifdef HPUX
/* for TIOCGPGRP & TIOCSPGRP */
#include <bsdtty.h>
#endif
#include "depend.h"
#include "stream.h"
/* #define BASHBUG ; keep bash's bug strictly */
/* #define PSIGNALSTYLE ; based upon psignal(3) messages */
/* #define NOJOB ; not use job control */
/* #define CHILDSTATEMENT ; make any statement child for suspend */
/* #define NOALIAS ; not use alias */
/* #define DOSCOMMAND ; emulate builtin commands of COMMAND.COM */
/* #define USEFAKEPIPE ; use DOS-like pipe instead of pipe(2) */
/* #define SHOWSTREE ; show syntax tree with -n option */
/* #define NOPOSIXUTIL ; not use POSIX utilities */
/* #define STRICTPOSIX ; keep POSIX strictly */
/* #define WITHNETWORK ; support network extensions */
/* #define WITHSOCKET ; support network extensions with socket */
/* #define WITHSOCKREDIR ; support network redirections with socket */
#if defined (BASHSTYLE) && !defined (BASHBUG)
#define BASHBUG
#endif
#if (defined (NOSETPGRP) || defined (MINIMUMSHELL)) && !defined (NOJOB)
#define NOJOB
#endif
#if defined (MINIMUMSHELL) && !defined (NOALIAS)
#define NOALIAS
#endif
#if (MSDOS \
|| ((defined (FD) || defined (WITHNETWORK)) && !defined (_NODOSCOMMAND))) \
&& !defined (DOSCOMMAND)
#define DOSCOMMAND
#endif
#if MSDOS && !defined (USEFAKEPIPE)
#define USEFAKEPIPE
#endif
#if defined (MINIMUMSHELL) && !defined (NOPOSIXUTIL)
#define NOPOSIXUTIL
#endif
#if defined (DEP_SOCKET) && !defined (WITHSOCKET)
#define WITHSOCKET
#endif
#if defined (DEP_SOCKREDIR) && !defined (WITHSOCKREDIR)
#define WITHSOCKREDIR
#endif
#include "pathname.h"
#include "termio.h"
#include "wait.h"
#ifdef BASHSTYLE
#define ERRBREAK continue
#else
#define ERRBREAK break
#endif
#define RET_SUCCESS 0
#define RET_FAIL 1
#define RET_SYNTAXERR 2
#define RET_FATALERR 2
#ifdef SIGINT
#define RET_INTR (SIGINT + 128)
#else
#define RET_INTR (2 + 128)
#endif
#define RET_NOTEXEC 126
#define RET_NOTFOUND 127
#define RET_NOTICE 255
#define RET_NULSYSTEM 256
#define READ_EOF 0x100
#define ENVPS1 "PS1"
#define ENVPS2 "PS2"
#define ENVPS4 "PS4"
#define ENVMAIL "MAIL"
#define ENVMAILPATH "MAILPATH"
#define ENVMAILCHECK "MAILCHECK"
#define ENVLINENO "LINENO"
#define ENVENV "ENV"
#define ENVCDPATH "CDPATH"
#define ENVPPID "PPID"
#define ENVOPTARG "OPTARG"
#define ENVOPTIND "OPTIND"
#define ENVSHELL "SHELL"
#define ENVCOMSPEC "COMSPEC"
#define ENVREPLY "REPLY"
#if defined (TIOCGPGRP) && !defined (USETCGETPGRP)
#define gettcpgrp(f, gp) ((ioctl(f, TIOCGPGRP, gp) < 0) \
? (*(gp) = (p_id_t)-1) : *(gp))
#else
#define gettcpgrp(f, gp) (*(gp) = tcgetpgrp(f))
#endif
#if defined (TIOCSPGRP) && !defined (USETCGETPGRP)
#define settcpgrp(f, g) ioctl(f, TIOCSPGRP, &(g))
#else
#define settcpgrp tcsetpgrp
#endif
#if MSDOS
#define Xexit exit
#define DEFPATH ":"
# ifndef _PATH_DEVNULL
# define _PATH_DEVNULL "NULL"
# endif
#else
#define Xexit _exit
#define DEFPATH ":/bin:/usr/bin"
#define DEFTERM "dumb"
# ifndef _PATH_DEVNULL
# define _PATH_DEVNULL "/dev/null"
# endif
#endif
typedef struct _heredoc_t {
char *eof;
char *filename;
char *buf;
int fd;
#ifndef USEFAKEPIPE
p_id_t pipein;
#endif
u_char flags;
} heredoc_t;
#define HD_IGNORETAB 0001
#define HD_QUOTED 0002
typedef struct _redirectlist {
int fd;
char *filename;
u_short type;
int new;
int old;
#ifdef DEP_DOSDRIVE
char *fakepipe;
int dosfd;
#endif
struct _redirectlist *next;
} redirectlist;
#define MD_NORMAL 0000
#define MD_READ 0001
#define MD_WRITE 0002
#define MD_RDWR 0003
#define MD_APPEND 0004
#define MD_FILEDESC 0010
#define MD_WITHERR 0020
#define MD_HEREDOC 0040
#define MD_FORCED 0100
#define MD_REST 0200
#define MD_DUPL 0400
typedef struct _command_t {
hashlist *hash;
int argc;
char **argv;
redirectlist *redp;
u_char type;
u_char id;
} command_t;
#define CT_STATEMENT 0001
#define CT_NONE 0002
#define CT_BUILTIN 0003
#define CT_COMMAND 0004
#define CT_FUNCTION 0005
#define CT_ALIAS 0006
#define CT_LOGDRIVE 0007
#ifdef FD
#define CT_FDORIGINAL 0100
#define CT_FDINTERNAL 0200
#endif
#define SM_IF 0001
#define SM_THEN 0002
#define SM_ELIF 0003
#define SM_ELSE 0004
#define SM_FI 0005
#define SM_WHILE 0006
#define SM_UNTIL 0007
#define SM_DO 0010
#define SM_DONE 0011
#define SM_FOR 0012
#define SM_IN 0013
#define SM_CASE 0014
#define SM_INCASE 0015
#define SM_RPAREN 0016
#define SM_CASEEND 0017
#define SM_ESAC 0020
#define SM_LPAREN 0021
#define SM_FUNC 0022
#define SM_LIST 0023
#define SM_LISTEND 0024
#define SM_ANOTHER 0075
#define SM_CHILD 0076
#define SM_STATEMENT 0077
#define isstatement(comm) ((comm) && (comm) -> type == CT_STATEMENT)
#define notstatement(comm) ((comm) && (comm) -> type != CT_STATEMENT)
#define isbuiltin(comm) ((comm) && (comm) -> type == CT_BUILTIN)
#define iscommand(comm) ((comm) && (comm) -> type == CT_COMMAND)
#define ischild(comm) ((comm) && (comm) -> type == CT_STATEMENT \
&& (comm) -> id == SM_CHILD)
typedef struct _syntaxtree {
command_t *comm;
struct _syntaxtree *parent;
struct _syntaxtree *next;
#ifndef MINIMUMSHELL
long lineno;
#endif
u_char type;
u_char cont;
u_char flags;
} syntaxtree;
#define OP_NONE 0
#define OP_FG 1
#define OP_BG 2
#define OP_AND 3
#define OP_OR 4
#define OP_PIPE 5
#define OP_NOT 6
#define OP_NOWN 7
#define CN_ESCAPE 0001
#define CN_QUOT 0002
#define CN_STAT 0004
#define CN_INHR 0170
#define CN_SBST 0070
#define CN_VAR 0010
#define CN_COMM 0020
#define CN_EXPR 0030
#define CN_CASE 0040
#define CN_HDOC 0100
#define ST_NODE 0001
#define ST_NEXT 0002
#define ST_TOP 0004
#define ST_NOWN 0010
#define ST_BUSY 0020
#define ST_HDOC 0040
#ifdef MINIMUMSHELL
#define hasparent(trp) ((trp) -> parent)
#define getparent(trp) ((trp) -> parent)
#else
#define hasparent(trp) (!((trp) -> flags & ST_TOP) && (trp) -> parent)
#define getparent(trp) (((trp) -> flags & ST_TOP) \
? NULL : (trp) -> parent)
#endif
#define statementbody(trp) ((syntaxtree *)(((trp) -> comm) -> argv))
#define hascomm(trp) ((trp) -> comm && ((trp) -> comm) -> argc >= 0)
#define isopfg(trp) ((trp) -> type == OP_FG)
#define isopbg(trp) ((trp) -> type == OP_BG)
#define isopand(trp) ((trp) -> type == OP_AND)
#define isopor(trp) ((trp) -> type == OP_OR)
#define isoppipe(trp) ((trp) -> type == OP_PIPE)
#ifdef MINIMUMSHELL
#define isopnot(trp) (0)
#define isopnown(trp) (0)
#else
#define isopnot(trp) ((trp) -> type == OP_NOT)
#define isopnown(trp) ((trp) -> type == OP_NOWN)
#endif
typedef struct _shbuiltintable {
int (NEAR *func)__P_((syntaxtree *));
CONST char *ident;
u_char flags;
} shbuiltintable;
#define BT_NOGLOB 0001
#define BT_RESTRICT 0002
#define BT_POSIXSPECIAL 0004
#define BT_NOKANJIFGET 0010
#define BT_DISABLE 0020
#define BT_FILENAME 0040
#define SMPREV 4
typedef struct _statementtable {
int (NEAR *func)__P_((syntaxtree *));
CONST char *ident;
u_char type;
u_char prev[SMPREV];
} statementtable;
#define STT_TYPE 0017
#define STT_FOR 0001
#define STT_CASE 0002
#define STT_IN 0003
#define STT_INCASE 0004
#define STT_CASEEND 0005
#define STT_LIST 0006
#define STT_LPAREN 0007
#define STT_FUNC 0010
#define STT_NEEDLIST 0020
#define STT_NEEDIDENT 0040
#define STT_NEEDNONE 0100
#define STT_NEEDCOMM 0200
typedef struct _opetable {
u_char op;
u_char level;
CONST char *symbol;
} opetable;
typedef struct _pipelist {
char *file;
XFILE *fp;
#ifndef USEFAKEPIPE
syntaxtree *trp;
#endif
int fd;
int new;
int old;
int ret;
p_id_t pid;
struct _pipelist *next;
} pipelist;
#ifndef NOJOB
typedef struct _jobtable {
p_id_t *pids;
int *stats;
int *fds;
int npipe;
syntaxtree *trp;
char *tty;
} jobtable;
#endif /* !NOJOB */
typedef struct _shfunctable {
char *ident;
syntaxtree *func;
} shfunctable;
typedef struct _shaliastable {
char *ident;
char *comm;
u_char flags;
} shaliastable;
#define AL_USED 0001
typedef struct _signaltable {
int sig;
int (*func)__P_((VOID_A));
CONST char *ident;
CONST char *mes;
u_char flags;
} signaltable;
#define TR_STAT 0007
#define TR_IGN 0001
#define TR_TERM 0002
#define TR_STOP 0003
#define TR_TRAP 0004
#define TR_BLOCK 0010
#define TR_NOTRAP 0020
#define TR_CATCH 0040
#define TR_READBL 0100
typedef struct _ulimittable {
u_char opt;
int res;
int unit;
CONST char *mes;
} ulimittable;
typedef struct _shflagtable {
CONST char *ident;
int *var;
u_char letter;
} shflagtable;
extern int shellmode;
extern p_id_t mypid;
extern p_id_t orgpid;
extern p_id_t shellpid;
extern int ret_status;
extern int interactive;
extern int errorexit;
#ifndef NOJOB
extern int lastjob;
extern int prevjob;
extern int stopped;
extern p_id_t orgpgrp;
extern p_id_t childpgrp;
extern p_id_t ttypgrp;
#endif
extern int interrupted;
extern int nottyout;
extern int syntaxerrno;
#if !MSDOS
extern int sigconted;
#endif
extern int verboseexec;
extern int notexec;
extern int verboseinput;
extern int terminated;
extern int forcedstdin;
extern int interactive_io;
extern int tmperrorexit;
extern int restricted;
extern int freeenviron;
extern int undeferror;
extern int hashahead;
extern int noglob;
extern int autoexport;
#ifndef MINIMUMSHELL
extern int noclobber;
extern int ignoreeof;
#endif
#ifndef NOJOB
extern int bgnotify;
extern int jobok;
#endif
#ifdef FD
# ifndef _NOEDITMODE
extern int emacsmode;
extern int vimode;
# endif
# ifdef DEP_PTY
extern int shptymode;
# endif
# if !MSDOS
extern int autosavetty;
# endif
#endif /* FD */
extern int loginshell;
extern int noruncom;
extern CONST statementtable statementlist[];
extern CONST signaltable signallist[];
#ifndef MINIMUMSHELL
extern int catchsignal __P_((int));
#endif
extern VOID prepareexit __P_((int));
extern VOID Xexit2 __P_((int));
extern VOID execerror __P_((char *CONST *, CONST char *, int, int));
extern VOID doperror __P_((CONST char *, CONST char *));
extern int isnumeric __P_((CONST char *));
#if !MSDOS
extern VOID dispsignal __P_((int, int, XFILE *));
extern int waitjob __P_((p_id_t, wait_pid_t *, int));
extern int waitchild __P_((p_id_t, syntaxtree *));
#endif
extern VOID setshflag __P_((int, int));
extern char *evalvararg __P_((char *, int, int));
extern VOID freeheredoc __P_((heredoc_t *, int));
extern VOID freerlist __P_((redirectlist *, int));
extern VOID freecomm __P_((command_t *, int));
extern syntaxtree *newstree __P_((syntaxtree *));
extern VOID freestree __P_((syntaxtree *));
extern syntaxtree *parentstree __P_((syntaxtree *));
#if !MSDOS
extern VOID cmpmail __P_((CONST char *, CONST char *, time_t *));
#endif
extern int identcheck __P_((CONST char *, int));
extern char *getshellvar __P_((CONST char *, int));
extern int putexportvar __P_((char *, int));
extern int putshellvar __P_((char *, int));
extern int unset __P_((CONST char *, int));
#ifdef MINIMUMSHELL
extern syntaxtree * duplstree __P_((syntaxtree *, syntaxtree *));
#define duplstree2(tr, p, t) duplstree(tr, p)
#else
extern syntaxtree * duplstree __P_((syntaxtree *, syntaxtree *, long));
#define duplstree2 duplstree
#endif
extern int getstatid __P_((syntaxtree *trp));
#if defined (BASHSTYLE) || !defined (MINIMUMSHELL)
extern syntaxtree *startvar __P_((syntaxtree *, redirectlist *,
CONST char *, int *, int *, int));
#endif
extern syntaxtree *analyze __P_((CONST char *, syntaxtree *, int));
#ifdef DJGPP
extern int closepipe __P_((int, int));
#define closepipe2 closepipe
#else
extern int closepipe __P_((int));
#define closepipe2(f, d) closepipe(f)
#endif
extern char *evalbackquote __P_((CONST char *));
#ifdef NOALIAS
extern int checktype __P_((CONST char *, int *, int));
#define checktype2(s, i, a, f) checktype(s, i, f)
#else
extern int checktype __P_((CONST char *, int *, int, int));
#define checktype2 checktype
#endif
#if defined (FD) && !defined (_NOCOMPLETE)
extern int completeshellvar __P_((CONST char *, int, int, char ***));
extern int completeshellcomm __P_((CONST char *, int, int, char ***));
#endif
extern int getsubst __P_((int, char **, char ***, int **));
extern VOID printstree __P_((syntaxtree *, int, XFILE *));
extern int tinygetopt __P_((syntaxtree *, CONST char *, int *));
extern int setexport __P_((CONST char *));
extern int setronly __P_((CONST char *));
extern int typeone __P_((CONST char *, XFILE *));
#ifndef FDSH
extern char **getsimpleargv __P_((syntaxtree *));
#endif
extern VOID setshfunc __P_((char *, syntaxtree *));
extern int unsetshfunc __P_((CONST char *, int));
#if MSDOS
extern int exec_simplecom __P_((syntaxtree *, int, int));
#define exec_simplecom2(tr, t, i, b) \
exec_simplecom(tr, t, i)
#else
extern int exec_simplecom __P_((syntaxtree *, int, int, int));
#define exec_simplecom2 exec_simplecom
#endif
extern int execruncom __P_((CONST char *, int));
extern VOID setshellvar __P_((char *CONST *));
extern int prepareterm __P_((VOID_A));
extern int initshell __P_((int, char *CONST *));
extern int shell_loop __P_((int));
extern int main_shell __P_((int, char *CONST *, char *CONST *));
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