153 lines
3.5 KiB
C
153 lines
3.5 KiB
C
/*
|
|
* (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
|
|
* See the copyright notice in the ACK home directory, in the file "Copyright".
|
|
*
|
|
*/
|
|
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include "ack.h"
|
|
#include "list.h"
|
|
#include "trans.h"
|
|
#include "grows.h"
|
|
#include "data.h"
|
|
#include <signal.h>
|
|
|
|
#ifndef NORCSID
|
|
static char rcs_id[] = "$Id$" ;
|
|
#endif
|
|
|
|
#define ARG_MORE 40 /* The size of args chunks to allocate */
|
|
|
|
extern growstring scanvars();
|
|
|
|
static char **arglist ; /* The first argument */
|
|
static unsigned argcount ; /* The current number of arguments */
|
|
static unsigned argmax; /* The maximum number of arguments so far */
|
|
|
|
int runphase(phase) register trf *phase ; {
|
|
register list_elem *elem ;
|
|
char *prog ; int result ;
|
|
growstring bline ;
|
|
|
|
bline=scanvars(phase->t_prog) ;
|
|
prog=gr_final(&bline) ;
|
|
if ( v_flag || debug ) {
|
|
if ( v_flag==1 && !debug ) {
|
|
vprint("%s",phase->t_name) ;
|
|
if ( !phase->t_combine ) {
|
|
vprint(" %s%s\n",p_basename,
|
|
strrchr(in.p_path,SUFCHAR) ) ;
|
|
} else {
|
|
scanlist(l_first(phase->t_inputs), elem) {
|
|
vprint(" %s",p_cont(*elem)->p_path);
|
|
}
|
|
vprint("\n") ;
|
|
}
|
|
} else {
|
|
/* list all args */
|
|
vprint("%s",prog) ;
|
|
scanlist(l_first(phase->t_flags), elem) {
|
|
vprint(" %s",l_content(*elem)) ;
|
|
}
|
|
scanlist(l_first(phase->t_args), elem) {
|
|
vprint(" %s",l_content(*elem)) ;
|
|
}
|
|
vprint("\n") ;
|
|
}
|
|
}
|
|
argcount=0 ;
|
|
x_arg(phase->t_name) ;
|
|
scanlist(l_first(phase->t_flags), elem) {
|
|
x_arg(l_content(*elem)) ;
|
|
}
|
|
scanlist(l_first(phase->t_args), elem) {
|
|
x_arg(l_content(*elem)) ;
|
|
}
|
|
x_arg( (char *)0 ) ;
|
|
result=run_exec(phase,prog) ;
|
|
throws(prog) ;
|
|
return result ;
|
|
}
|
|
|
|
int run_exec(phase,prog) trf *phase ; char *prog ; {
|
|
int status, child, waitchild ;
|
|
|
|
do_flush();
|
|
while ( (child=fork())== -1 ) ;
|
|
if ( child ) {
|
|
/* The parent */
|
|
do {
|
|
waitchild= wait(&status) ;
|
|
if ( waitchild== -1 ) {
|
|
fatal("missing child") ;
|
|
}
|
|
} while ( waitchild!=child) ;
|
|
if ( status ) {
|
|
if ( status&0200 && (status&0177)!=SIGQUIT &&
|
|
t_flag<=1 ) unlink("core") ;
|
|
switch ( status&0177 ) {
|
|
case 0 :
|
|
break ;
|
|
case SIGHUP:
|
|
case SIGINT:
|
|
case SIGQUIT:
|
|
case SIGTERM:
|
|
quit(-5) ;
|
|
default:
|
|
error("%s died with signal %d",
|
|
prog,status&0177) ;
|
|
}
|
|
/* The assumption is that processes voluntarely
|
|
dying with a non-zero status already produced
|
|
some sort of error message to the outside world.
|
|
*/
|
|
n_error++ ;
|
|
return 0 ;
|
|
}
|
|
return 1 ; /* From the parent */
|
|
}
|
|
/* The child */
|
|
if ( phase->t_stdin ) {
|
|
if ( !in.p_path ) {
|
|
fatal("no input file for %s",phase->t_name) ;
|
|
}
|
|
close(0) ;
|
|
if ( open(in.p_path,0)!=0 ) {
|
|
error("cannot open %s",in.p_path) ;
|
|
exit(1) ;
|
|
}
|
|
}
|
|
if ( phase->t_stdout ) {
|
|
if ( !out.p_path ) {
|
|
fatal("no output file for %s",phase->t_name) ;
|
|
}
|
|
close(1) ;
|
|
if ( creat(out.p_path,0666)!=1 ) {
|
|
close(1); dup(2);
|
|
error("cannot create %s",out.p_path) ;
|
|
exit(1) ;
|
|
}
|
|
}
|
|
execv(prog,arglist) ;
|
|
if ( phase->t_stdout ) { close(1) ; dup(2) ; }
|
|
error("Cannot execute %s",prog) ;
|
|
exit(1) ;
|
|
/*NOTREACHED*/
|
|
}
|
|
|
|
x_arg(string) char *string ; {
|
|
/* Add one execute argument to the argument vector */
|
|
if ( argcount==argmax ) {
|
|
if ( argmax==0 ) {
|
|
argmax= 2*ARG_MORE ;
|
|
arglist= (char **)getcore(argmax*sizeof (char *)) ;
|
|
} else {
|
|
argmax += ARG_MORE ;
|
|
arglist= (char **)changecore((char *)arglist,
|
|
argmax*sizeof (char *)) ;
|
|
}
|
|
}
|
|
*(arglist+argcount++) = string ;
|
|
}
|