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41 lines
668 B
C
41 lines
668 B
C
#include <unistd.h>
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#include "io.h"
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#include "buffer.h"
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#include <stdlib.h>
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void child(int64 fd) {
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int64 x=io_receivefd(fd);
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char buf[8192];
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int i;
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if (x==-1) {
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buffer_putsflush(buffer_2,"fd passing failed!\n");
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exit(1);
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}
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i=read(x,buf,sizeof(buf));
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write(1,buf,i);
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io_close(x);
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}
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void father(int64 fd) {
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int64 x;
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if (io_readfile(&x,"/etc/resolv.conf"))
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io_passfd(fd,x);
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}
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int main() {
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int64 sp[2];
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if (io_socketpair(sp)==-1) return 1;
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switch (fork()) {
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case -1: return 1;
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case 0: /* child */
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io_close(sp[0]);
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child(sp[1]);
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break;
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default:
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io_close(sp[1]);
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father(sp[0]);
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break;
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}
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return 0;
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}
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