static int hp_open_control(int type, struct file *file)
{
/*
hp_alloc assures that the region is filled with zero.
*/
struct hp_io_buffer *buf = hp_alloc(sizeof(struct hp_io_buffer));
buf->writebuf_size = sizeof(buf->write_buf);
buf->write_cur = 0;
buf->read_cur = 0;
mutex_init(&buf->io_sem);
/*
The private data field is used in hp_read_control
to handle several special devices in an interface.
*/
file->private_data = buf;
switch(type) {
case HP_DENTRY_KEY_NODECONF_IP:
/*
security/hp/ip_node
*/
buf->write = hp_nodeconf_ip_write;
hp_nodeconf_ip_setup_readbuf(buf);
break;
case HP_DENTRY_KEY_NODECONF_PORT:
/*
security/hp/ip_port
*/
buf->write = hp_nodeconf_port_write;
hp_nodeconf_port_setup_readbuf(buf);
break;
case HP_DENTRY_KEY_NODECONF_SELFCONF:
buf->write = hp_nodeconf_selfconf;
hp_nodeconf_port_setup_readbuf(buf);
break;
case HP_DENTRY_KEY_TTY_OUTPUT_ALL:
buf->write = NULL;
// hp_tty_output_all_setup_readbuf(buf);
debug("tty_output/all is opened");
buf->read = hp_tty_output_all_read;
break;
case HP_DENTRY_KEY_TTY_OUTPUT_SETUP:
/*
security/hp/
setups security/hp/tty_output/
*/
buf->write = NULL;
hp_tty_output_prepare_output_files();
/* Dummy contents */
buf->read_buf = hp_alloc(1);
buf->read_buf[0] = '0';
buf->readbuf_size = 1;
break;
default:
break;
}
return 0;
}
/*ARGSUSED*/
static int
p_get_oracle3(value vfrom, type tfrom, value vto, type tto, value v, type t)
{
pword *b_aux;
char *buf;
int size;
if (IsRef(tto))
{
b_aux = B.args;
while (!IsParallelFrame(BTop(b_aux)))
b_aux = BPrev(b_aux);
}
else
b_aux = vto.ptr;
size = oracle_size(vfrom.ptr, b_aux);
buf = (char *) hp_alloc(size);
retrieve_oracle(buf, size, vfrom.ptr, b_aux);
Return_Unify_Integer(v, t, (long) buf);
}
