static int etap_open(void *data)
{
struct ethertap_data *pri = data;
char *output;
int data_fds[2], control_fds[2], err, output_len;
err = tap_open_common(pri->dev, pri->gate_addr);
if (err)
return err;
err = socketpair(AF_UNIX, SOCK_DGRAM, 0, data_fds);
if (err) {
err = -errno;
printk(UM_KERN_ERR "etap_open - data socketpair failed - "
"err = %d\n", errno);
return err;
}
err = socketpair(AF_UNIX, SOCK_STREAM, 0, control_fds);
if (err) {
err = -errno;
printk(UM_KERN_ERR "etap_open - control socketpair failed - "
"err = %d\n", errno);
goto out_close_data;
}
err = etap_tramp(pri->dev_name, pri->gate_addr, control_fds[0],
control_fds[1], data_fds[0], data_fds[1]);
output_len = UM_KERN_PAGE_SIZE;
output = uml_kmalloc(output_len, UM_GFP_KERNEL);
read_output(control_fds[0], output, output_len);
if (output == NULL)
printk(UM_KERN_ERR "etap_open : failed to allocate output "
"buffer\n");
else {
printk("%s", output);
kfree(output);
}
if (err < 0) {
printk(UM_KERN_ERR "etap_tramp failed - err = %d\n", -err);
goto out_close_control;
}
pri->data_fd = data_fds[0];
pri->control_fd = control_fds[0];
iter_addresses(pri->dev, etap_open_addr, &pri->control_fd);
return data_fds[0];
out_close_control:
close(control_fds[0]);
close(control_fds[1]);
out_close_data:
close(data_fds[0]);
close(data_fds[1]);
return err;
}
static void etap_close(int fd, void *data)
{
struct ethertap_data *pri = data;
iter_addresses(pri->dev, etap_close_addr, &pri->control_fd);
os_close_file(fd);
os_shutdown_socket(pri->data_fd, 1, 1);
os_close_file(pri->data_fd);
pri->data_fd = -1;
os_close_file(pri->control_fd);
pri->control_fd = -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, 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 int etap_open(void *data)
{
struct ethertap_data *pri = data;
char *output;
int data_fds[2], control_fds[2], err, output_len;
err = tap_open_common(pri->dev, pri->gate_addr);
if(err) return(err);
err = os_pipe(data_fds, 0, 0);
if(err < 0){
printk("data os_pipe failed - err = %d\n", -err);
return(err);
}
err = os_pipe(control_fds, 1, 0);
if(err < 0){
printk("control os_pipe failed - err = %d\n", -err);
return(err);
}
err = etap_tramp(pri->dev_name, pri->gate_addr, control_fds[0],
control_fds[1], data_fds[0], data_fds[1]);
output_len = page_size();
output = um_kmalloc(output_len);
read_output(control_fds[0], output, output_len);
if(output == NULL)
printk("etap_open : failed to allocate output buffer\n");
else {
printk("%s", output);
kfree(output);
}
if(err < 0){
printk("etap_tramp failed - err = %d\n", -err);
return(err);
}
pri->data_fd = data_fds[0];
pri->control_fd = control_fds[0];
iter_addresses(pri->dev, etap_open_addr, &pri->control_fd);
return(data_fds[0]);
}
static void etap_close(int fd, void *data)
{
struct ethertap_data *pri = data;
iter_addresses(pri->dev, etap_close_addr, &pri->control_fd);
close(fd);
if (shutdown(pri->data_fd, SHUT_RDWR) < 0)
printk(UM_KERN_ERR "etap_close - shutdown data socket failed, "
"errno = %d\n", errno);
if (shutdown(pri->control_fd, SHUT_RDWR) < 0)
printk(UM_KERN_ERR "etap_close - shutdown control socket "
"failed, errno = %d\n", errno);
close(pri->data_fd);
pri->data_fd = -1;
close(pri->control_fd);
pri->control_fd = -1;
}
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;
}