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#include <u.h>
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#include <libc.h>
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/*
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 * Since the SSL device uses decimal file descriptors to name channels,
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 * it is impossible for a user-level file server to stand in for the kernel device.
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 * Thus we hard-code #D rather than use /net/ssl.
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 */
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int
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pushssl(int fd, char *alg, char *secin, char *secout, int *cfd)
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{
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	char buf[8];
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	char dname[64];
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	int n, data, ctl;
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	ctl = open("#D/ssl/clone", ORDWR);
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	if(ctl < 0)
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		return -1;
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	n = read(ctl, buf, sizeof(buf)-1);
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	if(n < 0)
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		goto error;
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	buf[n] = 0;
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	sprint(dname, "#D/ssl/%s/data", buf);
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	data = open(dname, ORDWR);
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	if(data < 0)
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		goto error;
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	if(fprint(ctl, "fd %d", fd) < 0 ||
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	   fprint(ctl, "secretin %s", secin) < 0 ||
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	   fprint(ctl, "secretout %s", secout) < 0 ||
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	   fprint(ctl, "alg %s", alg) < 0){
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		close(data);
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		goto error;
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	}
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	close(fd);
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	if(cfd != 0)
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		*cfd = ctl;
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	else
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		close(ctl);
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	return data;
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error:
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	close(ctl);
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	return -1;
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}