1*11a8fa6cSceastha /*
2*11a8fa6cSceastha * Copyright 2005 Sun Microsystems, Inc. All rights reserved.
3*11a8fa6cSceastha * Use is subject to license terms.
4*11a8fa6cSceastha */
5*11a8fa6cSceastha
67c478bd9Sstevel@tonic-gate /* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
77c478bd9Sstevel@tonic-gate /* All Rights Reserved */
87c478bd9Sstevel@tonic-gate
97c478bd9Sstevel@tonic-gate /*
107c478bd9Sstevel@tonic-gate * Copyright (c) 1980 Regents of the University of California.
117c478bd9Sstevel@tonic-gate * All rights reserved. The Berkeley software License Agreement
127c478bd9Sstevel@tonic-gate * specifies the terms and conditions for redistribution.
137c478bd9Sstevel@tonic-gate */
147c478bd9Sstevel@tonic-gate
157c478bd9Sstevel@tonic-gate #pragma ident "%Z%%M% %I% %E% SMI"
167c478bd9Sstevel@tonic-gate
177c478bd9Sstevel@tonic-gate #include "refer..c"
187c478bd9Sstevel@tonic-gate #define move(x, y) close(y); dup(x); close(x);
197c478bd9Sstevel@tonic-gate
20*11a8fa6cSceastha extern void err();
21*11a8fa6cSceastha
22*11a8fa6cSceastha int
corout(char * in,char * out,char * rprog,char * arg,int outlen)23*11a8fa6cSceastha corout(char *in, char *out, char *rprog, char *arg, int outlen)
247c478bd9Sstevel@tonic-gate {
257c478bd9Sstevel@tonic-gate int pipev[2], fr1, fr2, fw1, fw2, n;
267c478bd9Sstevel@tonic-gate int status;
277c478bd9Sstevel@tonic-gate
287c478bd9Sstevel@tonic-gate pipe(pipev);
297c478bd9Sstevel@tonic-gate fr1 = pipev[0];
307c478bd9Sstevel@tonic-gate fw1 = pipev[1];
317c478bd9Sstevel@tonic-gate pipe(pipev);
327c478bd9Sstevel@tonic-gate fr2 = pipev[0];
337c478bd9Sstevel@tonic-gate fw2 = pipev[1];
34*11a8fa6cSceastha if (fork() == 0) {
357c478bd9Sstevel@tonic-gate close(fw1);
367c478bd9Sstevel@tonic-gate close(fr2);
377c478bd9Sstevel@tonic-gate move(fr1, 0);
387c478bd9Sstevel@tonic-gate move(fw2, 1);
397c478bd9Sstevel@tonic-gate execl(rprog, "deliv", arg, 0);
407c478bd9Sstevel@tonic-gate err("Can't run %s", rprog);
417c478bd9Sstevel@tonic-gate }
427c478bd9Sstevel@tonic-gate close(fw2);
437c478bd9Sstevel@tonic-gate close(fr1);
447c478bd9Sstevel@tonic-gate write(fw1, in, strlen(in));
457c478bd9Sstevel@tonic-gate close(fw1);
467c478bd9Sstevel@tonic-gate wait(&status);
477c478bd9Sstevel@tonic-gate n = read(fr2, out, outlen);
487c478bd9Sstevel@tonic-gate out[n] = 0;
497c478bd9Sstevel@tonic-gate close(fr2);
507c478bd9Sstevel@tonic-gate return (n);
517c478bd9Sstevel@tonic-gate }
52