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/*
* Copyright 2005 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
/* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
/* All Rights Reserved */
/*
* Copyright (c) 1980 Regents of the University of California.
* All rights reserved. The Berkeley software License Agreement
* specifies the terms and conditions for redistribution.
*/
#pragma ident "%Z%%M% %I% %E% SMI"
#include "refer..c"
#define move(x, y) close(y); dup(x); close(x);
extern void err();
int
corout(char *in, char *out, char *rprog, char *arg, int outlen)
{
int pipev[2], fr1, fr2, fw1, fw2, n;
int status;
pipe(pipev);
fr1 = pipev[0];
fw1 = pipev[1];
pipe(pipev);
fr2 = pipev[0];
fw2 = pipev[1];
if (fork() == 0) {
close(fw1);
close(fr2);
move(fr1, 0);
move(fw2, 1);
execl(rprog, "deliv", arg, 0);
err("Can't run %s", rprog);
}
close(fw2);
close(fr1);
write(fw1, in, strlen(in));
close(fw1);
wait(&status);
n = read(fr2, out, outlen);
out[n] = 0;
close(fr2);
return (n);
}
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