/*
* We only need open() and close() routines. open() calls socreate()
* to allocate a "real" object behind the stream and mallocs some state
* info for use by the svr4 emulator; close() deallocates the state
* information and passes the underlying object to the normal socket close
* routine.
*/
static int
streamsopen(struct cdev *dev, int oflags, int devtype, struct thread *td)
{
struct filedesc *fdp;
struct svr4_strm *st;
struct socket *so;
struct file *fp;
int family, type, protocol;
int error, fd;
if (td->td_dupfd >= 0)
return ENODEV;
switch (dev2unit(dev)) {
case dev_udp:
family = AF_INET;
type = SOCK_DGRAM;
protocol = IPPROTO_UDP;
break;
case dev_tcp:
family = AF_INET;
type = SOCK_STREAM;
protocol = IPPROTO_TCP;
break;
case dev_ip:
case dev_rawip:
family = AF_INET;
type = SOCK_RAW;
protocol = IPPROTO_IP;
break;
case dev_icmp:
family = AF_INET;
type = SOCK_RAW;
protocol = IPPROTO_ICMP;
break;
case dev_unix_dgram:
family = AF_LOCAL;
type = SOCK_DGRAM;
protocol = 0;
break;
case dev_unix_stream:
case dev_unix_ord_stream:
family = AF_LOCAL;
type = SOCK_STREAM;
protocol = 0;
break;
case dev_ptm:
return svr4_ptm_alloc(td);
default:
return EOPNOTSUPP;
}
fdp = td->td_proc->p_fd;
if ((error = falloc(td, &fp, &fd, 0)) != 0)
return error;
/* An extra reference on `fp' has been held for us by falloc(). */
error = socreate(family, &so, type, protocol, td->td_ucred, td);
if (error) {
fdclose(fdp, fp, fd, td);
fdrop(fp, td);
return error;
}
finit(fp, FREAD | FWRITE, DTYPE_SOCKET, so, &svr4_netops);
/*
* Allocate a stream structure and attach it to this socket.
* We don't bother locking so_emuldata for SVR4 stream sockets as
* its value is constant for the lifetime of the stream once it
* is initialized here.
*/
st = malloc(sizeof(struct svr4_strm), M_TEMP, M_WAITOK);
st->s_family = so->so_proto->pr_domain->dom_family;
st->s_cmd = ~0;
st->s_afd = -1;
st->s_eventmask = 0;
so->so_emuldata = st;
fdrop(fp, td);
td->td_dupfd = fd;
return ENXIO;
}
/*
* We only need open() and close() routines. open() calls socreate()
* to allocate a "real" object behind the stream and mallocs some state
* info for use by the svr4 emulator; close() deallocates the state
* information and passes the underlying object to the normal socket close
* routine.
*/
static int
streamsopen(dev_t dev, int oflags, int devtype, struct thread *td)
{
int type, protocol;
int fd;
struct file *fp;
struct socket *so;
int error;
int family;
struct proc *p = td->td_proc;
PROC_LOCK(p);
if (td->td_dupfd >= 0) {
PROC_UNLOCK(p);
return ENODEV;
}
PROC_UNLOCK(p);
switch (minor(dev)) {
case dev_udp:
family = AF_INET;
type = SOCK_DGRAM;
protocol = IPPROTO_UDP;
break;
case dev_tcp:
family = AF_INET;
type = SOCK_STREAM;
protocol = IPPROTO_TCP;
break;
case dev_ip:
case dev_rawip:
family = AF_INET;
type = SOCK_RAW;
protocol = IPPROTO_IP;
break;
case dev_icmp:
family = AF_INET;
type = SOCK_RAW;
protocol = IPPROTO_ICMP;
break;
case dev_unix_dgram:
family = AF_LOCAL;
type = SOCK_DGRAM;
protocol = 0;
break;
case dev_unix_stream:
case dev_unix_ord_stream:
family = AF_LOCAL;
type = SOCK_STREAM;
protocol = 0;
break;
case dev_ptm:
return svr4_ptm_alloc(td);
default:
return EOPNOTSUPP;
}
if ((error = falloc(td, &fp, &fd)) != 0)
return error;
if ((error = socreate(family, &so, type, protocol,
td->td_ucred, td)) != 0) {
FILEDESC_LOCK(p->p_fd);
p->p_fd->fd_ofiles[fd] = 0;
FILEDESC_UNLOCK(p->p_fd);
ffree(fp);
return error;
}
FILEDESC_LOCK(p->p_fd);
fp->f_data = (caddr_t)so;
fp->f_flag = FREAD|FWRITE;
fp->f_ops = &svr4_netops;
fp->f_type = DTYPE_SOCKET;
FILEDESC_UNLOCK(p->p_fd);
(void)svr4_stream_get(fp);
PROC_LOCK(p);
td->td_dupfd = fd;
PROC_UNLOCK(p);
return ENXIO;
}
