static int slip_open(void *data)
{
struct slip_data *pri = data;
char version_buf[sizeof("nnnnn\0")];
char gate_buf[sizeof("nnn.nnn.nnn.nnn\0")];
char *argv[] = { "uml_net", version_buf, "slip", "up", gate_buf,
NULL };
int sfd, mfd, disc, sencap, err;
if((mfd = get_pty()) < 0){
printk("umn : Failed to open pty\n");
return(-1);
}
if((sfd = os_open_file(ptsname(mfd), of_rdwr(OPENFLAGS()), 0)) < 0){
printk("Couldn't open tty for slip line\n");
return(-1);
}
if(set_up_tty(sfd)) return(-1);
pri->slave = sfd;
pri->pos = 0;
pri->esc = 0;
if(pri->gate_addr != NULL){
sprintf(version_buf, "%d", UML_NET_VERSION);
strcpy(gate_buf, pri->gate_addr);
err = slip_tramp(argv, sfd);
if(err != 0){
printk("slip_tramp failed - errno = %d\n", err);
return(-err);
}
if(ioctl(pri->slave, SIOCGIFNAME, pri->name) < 0){
printk("SIOCGIFNAME failed, errno = %d\n", errno);
return(-errno);
}
iter_addresses(pri->dev, open_addr, pri->name);
}
else {
disc = N_SLIP;
if(ioctl(sfd, TIOCSETD, &disc) < 0){
printk("Failed to set slip line discipline - "
"errno = %d\n", errno);
return(-errno);
}
sencap = 0;
if(ioctl(sfd, SIOCSIFENCAP, &sencap) < 0){
printk("Failed to set slip encapsulation - "
"errno = %d\n", errno);
return(-errno);
}
}
return(mfd);
}
static void slip_close(int fd, void *data)
{
struct slip_data *pri = data;
char version_buf[sizeof("nnnnn\0")];
char *argv[] = { "uml_net", version_buf, "slip", "down", pri->name,
NULL };
int err;
if(pri->gate_addr != NULL)
iter_addresses(pri->dev, close_addr, pri->name);
sprintf(version_buf, "%d", UML_NET_VERSION);
err = slip_tramp(argv, pri->slave);
if(err != 0)
printk("slip_tramp failed - errno = %d\n", -err);
os_close_file(fd);
os_close_file(pri->slave);
pri->slave = -1;
}
static int slip_open(void *data)
{
struct slip_data *pri = data;
char version_buf[sizeof("nnnnn\0")];
char gate_buf[sizeof("nnn.nnn.nnn.nnn\0")];
char *argv[] = { "uml_net", version_buf, "slip", "up", gate_buf,
NULL };
int sfd, mfd, err;
err = get_pty();
if(err < 0){
printk("slip-open : Failed to open pty, err = %d\n", -err);
goto out;
}
mfd = err;
err = os_open_file(ptsname(mfd), of_rdwr(OPENFLAGS()), 0);
if(err < 0){
printk("Couldn't open tty for slip line, err = %d\n", -err);
goto out_close;
}
sfd = err;
if(set_up_tty(sfd))
goto out_close2;
pri->slave = sfd;
pri->slip.pos = 0;
pri->slip.esc = 0;
if(pri->gate_addr != NULL){
sprintf(version_buf, "%d", UML_NET_VERSION);
strcpy(gate_buf, pri->gate_addr);
err = slip_tramp(argv, sfd);
if(err < 0){
printk("slip_tramp failed - err = %d\n", -err);
goto out_close2;
}
err = os_get_ifname(pri->slave, pri->name);
if(err < 0){
printk("get_ifname failed, err = %d\n", -err);
goto out_close2;
}
iter_addresses(pri->dev, open_addr, pri->name);
}
else {
err = os_set_slip(sfd);
if(err < 0){
printk("Failed to set slip discipline encapsulation - "
"err = %d\n", -err);
goto out_close2;
}
}
return(mfd);
out_close2:
os_close_file(sfd);
out_close:
os_close_file(mfd);
out:
return err;
}
