sh1.c File Reference

#include <sys/types.h>
#include <signal.h>
#include <errno.h>
#include <setjmp.h>
#include "sh.h"

Include dependency graph for sh1.c:

Go to the source code of this file.

Data Structures
struct	region
Defines
#define	Extern   extern
#define	CMASK   0377
#define	QUOTE   0200
#define	QMASK   (CMASK&~QUOTE)
#define	NOT   '!'
#define	REGSIZE   sizeof(struct region)
#define	GROWBY   256
#define	FREE   32767
#define	BUSY   0
#define	ALIGN   (sizeof(int)-1)
Functions
	_PROTOTYPE (void(*qflag),(int))
	_PROTOTYPE (int main,(int argc, char **argv))
	_PROTOTYPE (int newfile,(char *s))
	_PROTOTYPE (static char *findeq,(char *cp))
	_PROTOTYPE (static char *cclass,(char *p, int sub))
	_PROTOTYPE (void initarea,(void))
int	main (int argc, char **argv)
void	setdash ()
int	newfile (char *s)
void	onecommand ()
void	fail ()
void	leave ()
void	warn (char *s)
void	err (char *s)
int	newenv (int f)
void	quitenv ()
int	anys (char *s1, char *s2)
int	any (int c, char *s)
char *	putn (int n)
char *	itoa (unsigned u, int n)
void	next (int f)
void	onintr (int s)
int	letter (register c)
int	digit (register c)
int	letnum (register c)
char *	space (int n)
char *	strsave (char *s, int a)
void	xfree (char *s)
void	sig (int i)
void	runtrap (int i)
var *	lookup (char *n)
void	setval (struct var *vp, char *val)
void	nameval (struct var *vp, char *val, char *name)
void	export (struct var *vp)
void	ronly (struct var *vp)
int	isassign (char *s)
int	assign (char *s, int cf)
int	checkname (char *cp)
void	putvlist (int f, int out)
int	eqname (char *n1, char *n2)
static char *	findeq (char *cp)
int	gmatch (char *s, char *p)
static char *	cclass (char *p, int sub)
void	initarea ()
char *	getcell (unsigned nbytes)
void	freecell (char *cp)
void	freearea (int a)
void	setarea (char *cp, int a)
int	getarea (char *cp)
void	garbage ()
Variables
int	intr
int	inparse
char	flags ['z'-'a'+1]
char *	flag = flags-'a'
char *	elinep = line+sizeof(line)-5
char *	null = ""
int	heedint = 1
env	e
char **	environ
char	shellname [] = "/bin/sh"
char	search [] = ":/bin:/usr/bin"
static struct region *	areabot
static struct region *	areatop
static struct region *	areanxt

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Define Documentation

#define ALIGN   (sizeof(int)-1)

Definition at line 794 of file sh1.c.

#define BUSY   0

Definition at line 793 of file sh1.c. Referenced by initarea().

#define CMASK   0377

Definition at line 721 of file sh1.c. Referenced by cclass(), gmatch(), and selected().

#define Extern   extern

Definition at line 1 of file sh1.c.

#define FREE   32767

Definition at line 792 of file sh1.c.

#define GROWBY   256

Definition at line 790 of file sh1.c.

#define NOT   '!'

Definition at line 724 of file sh1.c.

#define QMASK   (CMASK&~QUOTE)

Definition at line 723 of file sh1.c. Referenced by gmatch().

#define QUOTE   0200

Definition at line 722 of file sh1.c.

#define REGSIZE   sizeof(struct region)

Definition at line 789 of file sh1.c. Referenced by getcell(), and initarea().

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Function Documentation

_PROTOTYPE (  void  initarea, (void)  )

_PROTOTYPE (  static char *  cclass, (char *p, int sub)  )

_PROTOTYPE (  static char *  findeq, (char *cp)  )

_PROTOTYPE (  int  newfile, (char *s)  )

_PROTOTYPE (  int  main, (int argc, char **argv)  )

_PROTOTYPE (  void *  qflag, (int)  )

int any (  int  c, char *  s )

Definition at line 366 of file sh1.c. Referenced by anys(), blank(), dodot(), dollar(), doread(), getprotoent(), getservent(), glob(), globname(), herein(), rexecve(), and yylex().

int anys (  char *  s1, char *  s2 )

Definition at line 353 of file sh1.c. References any(). Referenced by anyspcl(), expand(), and globname().

int assign (  char *  s, int  cf )

Definition at line 646 of file sh1.c. References COPYV, cp, GETCELL, letnum(), letter(), lookup(), nameval(), NULL, and var::status.

static char* cclass (  char *  p, int  sub )  [static]

Definition at line 764 of file sh1.c. References c, CMASK, d, NOT, and NULL. Referenced by gmatch().

int checkname (  char *  cp  )

Definition at line 666 of file sh1.c. References letnum(), and letter(). Referenced by rdexp().

int digit (  register  c  )

Definition at line 441 of file sh1.c.

int eqname (  char *  n1, char *  n2 )

Definition at line 695 of file sh1.c. Referenced by lookup().

void err (  char *  s  )

Definition at line 297 of file sh1.c. References closeall(), e, env::errpt, flag, env::iobase, env::iop, iostack, leave(), talking, and warn.

void export (  struct var *  vp  )

Definition at line 619 of file sh1.c. References EXPORT. Referenced by doexport(), forkexec(), and main().

void fail (   )

Definition at line 265 of file sh1.c. References failpt.

static char* findeq (  char *  cp  )  [static]

Definition at line 705 of file sh1.c.

void freearea (  int  a  )

Definition at line 902 of file sh1.c. References areabot, areatop, FREE, p, and top. Referenced by execute(), grave(), onecommand(), and run().

void freecell (  char *  cp  )

Definition at line 888 of file sh1.c. References areanxt, FREE, and p.

void garbage (   )

Definition at line 932 of file sh1.c. References areabot, areanum, areanxt, areatop, region::next, p, and top.

int getarea (  char *  cp  )

Definition at line 925 of file sh1.c. Referenced by freehere().

char* getcell (  unsigned  nbytes  )

Definition at line 825 of file sh1.c. References abort(), areanum, areanxt, i, region::next, p, and REGSIZE. Referenced by space(), and tree().

int gmatch (  char *  s, char *  p )

Definition at line 727 of file sh1.c. References cclass(), CMASK, NULL, pc, QMASK, and QUOTE. Referenced by find1case(), and globname().

void initarea (   )

Definition at line 813 of file sh1.c. References ALIGN, region::area, areabot, areanxt, areatop, BUSY, region::next, REGSIZE, and sbrk. Referenced by main().

int isassign (  char *  s  )

Definition at line 634 of file sh1.c. References letnum(), and letter().

char* itoa (  unsigned  u, int  n )

Definition at line 384 of file sh1.c. References cp, m, and s.

void leave (   )

Definition at line 272 of file sh1.c. References execflg, exit(), exstat, fail, freehere(), runtrap(), and scraphere(). Referenced by do_getty(), doexit(), err(), execute(), main(), onecommand(), onintr(), and warn().

int letnum (  register  c  )

Definition at line 448 of file sh1.c. References digit, and letter(). Referenced by assign(), checkname(), dollar(), isassign(), and varput().

int letter (  register  c  )

Definition at line 434 of file sh1.c. Referenced by assign(), checkname(), dollar(), isassign(), letnum(), and ronly().

struct var* lookup (  char *  n  )

Definition at line 521 of file sh1.c. References c, cp, digit, dolc, dolv, dummy, eqname(), var::name, var::next, null, RONLY, space(), and vlist.

int main (  int  argc, char **  argv )

Definition at line 40 of file sh1.c. References areanum, assign(), cflag, closeall(), COPYV, cprompt, environ, exit(), EXPORT, export(), filechar(), flag, geteuid, getpid, homedir, ifs, initarea(), int(), itoa(), linechar(), lookup(), newfile, nlchar(), null, NULL, path, prompt, PUSHIO, s, search, setval(), shell, shellname, SIG_DFL, talking, and var::value.

void nameval (  struct var *  vp, char *  val, char *  name )

Definition at line 579 of file sh1.c. References cp, err, GETCELL, NULL, putc, RONLY, setarea(), space(), strlen(), and xfree(). Referenced by assign(), and setval().

int newenv (  int  f  )

Definition at line 312 of file sh1.c. References e, ep, errpt, env::errpt, fail, NULL, env::oenv, quitenv(), and space(). Referenced by eval(), expand(), herein(), readhere(), and run().

int newfile (  char *  s  )

Definition at line 198 of file sh1.c. References err, next, open, prs(), remap(), and strcmp.

void next (  int  f  )

Definition at line 409 of file sh1.c. References filechar(), and PUSHIO.

void onecommand (   )

Definition at line 217 of file sh1.c. References areanum, brklist, e, env::errpt, execflg, execute(), failpt, flag, freearea(), freehere(), garbage(), i, inparse, intr, iolist, leave(), env::linep, m1, multiline, NOPIPE, env::oenv, outtree, quitenv(), runtrap(), scraphere(), setjmp, talking, trapset, wdlist, yynerrs, and yyparse(). Referenced by grave().

void onintr (  int  s  )

Definition at line 416 of file sh1.c. References execflg, fail, heedint, inparse, intr, leave(), onintr(), prs(), SIGINT, signal(), and talking.

char* putn (  int  n  )

Definition at line 377 of file sh1.c. References itoa(). Referenced by doshift(), execute(), setstatus(), and tempname().

void putvlist (  int  f, int  out )

Definition at line 678 of file sh1.c. References EXPORT, if(), var::name, var::next, RONLY, var::status, vlist, and write. Referenced by rdexp().

void quitenv (   )

Definition at line 334 of file sh1.c. References close, DELETE, e, ep, env::iofd, NULL, and env::oenv. Referenced by expand(), herein(), newenv(), onecommand(), and run().

void ronly (  struct var *  vp  )

Definition at line 626 of file sh1.c. References letter(), and RONLY. Referenced by doreadonly().

void runtrap (  int  i  )

Definition at line 499 of file sh1.c. References nlchar(), NULL, RUN, and trap. Referenced by execute(), leave(), and onecommand().

void setarea (  char *  cp, int  a )

Definition at line 914 of file sh1.c. References region::area, and p. Referenced by nameval(), and strsave().

void setdash (   )

Definition at line 184 of file sh1.c. References c, cp, flag, lookup(), m, and setval().

void setval (  struct var *  vp, char *  val )

Definition at line 564 of file sh1.c. References nameval(), and NULL. Referenced by doread(), doshift(), execute(), main(), setdash(), and setstatus().

void sig (  int  i  )

Definition at line 492 of file sh1.c. References signal(), and trapset.

char* space (  int  n  )

Definition at line 455 of file sh1.c. References cp, err, and getcell(). Referenced by doHELP(), generate(), getwords(), globname(), lookup(), markhere(), nameval(), newenv(), newword(), and strsave().

char* strsave (  char *  s, int  a )

Definition at line 466 of file sh1.c. References cp, NULL, setarea(), space(), and strlen().

void warn (  char *  s  )

Definition at line 284 of file sh1.c. References exstat, flag, leave(), and prs().

void xfree (  char *  s  )

Definition at line 482 of file sh1.c. References DELETE. Referenced by nameval().

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Variable Documentation

struct region* areabot [static]

Definition at line 808 of file sh1.c. Referenced by freearea(), garbage(), and initarea().

struct region* areanxt [static]

Definition at line 810 of file sh1.c. Referenced by freecell(), garbage(), getcell(), and initarea().

struct region* areatop [static]

Definition at line 809 of file sh1.c. Referenced by freearea(), garbage(), and initarea().

struct env e

Initial value: {line, iostack, iostack-1, (xint *)NULL, FDBASE, (struct env *)NULL} Definition at line 21 of file sh1.c.

char* elinep = line+sizeof(line)-5

Definition at line 18 of file sh1.c. Referenced by dollar(), doread(), getc(), grave(), and yylex().

char** environ

Definition at line 19 of file environ.c.

char* flag = flags-'a'

Definition at line 17 of file sh1.c.

char flags['z'-'a'+1]

Definition at line 16 of file sh1.c.

int heedint = 1

Definition at line 20 of file sh1.c. Referenced by onintr(), and waitfor().

int inparse

Definition at line 15 of file sh1.c. Referenced by onecommand(), and onintr().

int intr

Definition at line 14 of file sh1.c.

char* null = ""

Definition at line 19 of file sh1.c.

char search[] = ":/bin:/usr/bin"

Definition at line 30 of file sh1.c. Referenced by __diff(), cmdcomp(), dec(), inc(), main(), SF(), and SR().

char shellname[] = "/bin/sh"

Definition at line 29 of file sh1.c. Referenced by f_pshinf(), and main().

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