39 lines
689 B
C
39 lines
689 B
C
#ifndef lint
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static char sccsid[] = "@(#)refer3.c 1.1 94/10/31 SMI"; /* from UCB 4.2 8/26/85 */
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#endif
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#include "refer..c"
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#define move(x, y) close(y); dup(x); close(x);
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corout(in, out, rprog, arg, outlen)
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char *in, *out, *rprog;
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{
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int pipev[2], fr1, fr2, fw1, fw2, n;
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int status;
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pipe(pipev);
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fr1 = pipev[0];
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fw1 = pipev[1];
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pipe(pipev);
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fr2 = pipev[0];
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fw2 = pipev[1];
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if (fork() == 0)
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{
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close(fw1);
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close(fr2);
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move(fr1, 0);
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move(fw2, 1);
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execl(rprog, "deliv", arg, 0);
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err("Can't run %s", rprog);
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}
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close(fw2);
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close(fr1);
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write(fw1, in , strlen(in));
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close(fw1);
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wait(&status);
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n = read(fr2, out, outlen);
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out[n] = 0;
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close(fr2);
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return(n);
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}
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