ref: 5883986336a9854a564da025eccebe7ab0076a79
dir: /sys/src/libc/9sys/pushssl.c/
#include <u.h>
#include <libc.h>
/*
* Since the SSL device uses decimal file descriptors to name channels,
* it is impossible for a user-level file server to stand in for the kernel device.
* Thus we hard-code #D rather than use /net/ssl.
*/
int
pushssl(int fd, char *alg, char *secin, char *secout, int *cfd)
{
char buf[8];
char dname[64];
int n, data, ctl;
ctl = open("#D/ssl/clone", ORDWR);
if(ctl < 0)
return -1;
n = read(ctl, buf, sizeof(buf)-1);
if(n < 0)
goto error;
buf[n] = 0;
sprint(dname, "#D/ssl/%s/data", buf);
data = open(dname, ORDWR);
if(data < 0)
goto error;
if(fprint(ctl, "fd %d", fd) < 0 ||
fprint(ctl, "secretin %s", secin) < 0 ||
fprint(ctl, "secretout %s", secout) < 0 ||
fprint(ctl, "alg %s", alg) < 0){
close(data);
goto error;
}
close(fd);
if(cfd != 0)
*cfd = ctl;
else
close(ctl);
return data;
error:
close(ctl);
return -1;
}