2007-02-10 09:44:02 +00:00
|
|
|
/*
|
2005-04-16 22:20:36 +00:00
|
|
|
* Copyright (C) 2001 Jeff Dike (jdike@karaya.com)
|
|
|
|
* Licensed under the GPL
|
|
|
|
*/
|
|
|
|
|
|
|
|
#include <stdio.h>
|
|
|
|
#include <stddef.h>
|
|
|
|
#include <stdlib.h>
|
|
|
|
#include <string.h>
|
|
|
|
#include <errno.h>
|
|
|
|
#include <unistd.h>
|
|
|
|
#include <termios.h>
|
|
|
|
#include <sys/socket.h>
|
|
|
|
#include <sys/un.h>
|
|
|
|
#include <netinet/in.h>
|
|
|
|
#include "kern_util.h"
|
|
|
|
#include "user.h"
|
|
|
|
#include "chan_user.h"
|
|
|
|
#include "port.h"
|
|
|
|
#include "os.h"
|
2006-10-20 06:28:20 +00:00
|
|
|
#include "um_malloc.h"
|
2005-04-16 22:20:36 +00:00
|
|
|
|
|
|
|
struct port_chan {
|
|
|
|
int raw;
|
|
|
|
struct termios tt;
|
|
|
|
void *kernel_data;
|
|
|
|
char dev[sizeof("32768\0")];
|
|
|
|
};
|
|
|
|
|
2006-09-27 08:50:33 +00:00
|
|
|
static void *port_init(char *str, int device, const struct chan_opts *opts)
|
2005-04-16 22:20:36 +00:00
|
|
|
{
|
|
|
|
struct port_chan *data;
|
|
|
|
void *kern_data;
|
|
|
|
char *end;
|
|
|
|
int port;
|
|
|
|
|
|
|
|
if(*str != ':'){
|
|
|
|
printk("port_init : channel type 'port' must specify a "
|
|
|
|
"port number\n");
|
2007-02-10 09:44:02 +00:00
|
|
|
return NULL;
|
2005-04-16 22:20:36 +00:00
|
|
|
}
|
|
|
|
str++;
|
|
|
|
port = strtoul(str, &end, 0);
|
|
|
|
if((*end != '\0') || (end == str)){
|
|
|
|
printk("port_init : couldn't parse port '%s'\n", str);
|
2007-02-10 09:44:02 +00:00
|
|
|
return NULL;
|
2005-04-16 22:20:36 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
kern_data = port_data(port);
|
|
|
|
if(kern_data == NULL)
|
2007-02-10 09:44:02 +00:00
|
|
|
return NULL;
|
2005-04-16 22:20:36 +00:00
|
|
|
|
|
|
|
data = um_kmalloc(sizeof(*data));
|
|
|
|
if(data == NULL)
|
|
|
|
goto err;
|
|
|
|
|
|
|
|
*data = ((struct port_chan) { .raw = opts->raw,
|
|
|
|
.kernel_data = kern_data });
|
|
|
|
sprintf(data->dev, "%d", port);
|
|
|
|
|
2007-02-10 09:44:02 +00:00
|
|
|
return data;
|
2005-04-16 22:20:36 +00:00
|
|
|
err:
|
|
|
|
port_kern_free(kern_data);
|
2007-02-10 09:44:02 +00:00
|
|
|
return NULL;
|
2005-04-16 22:20:36 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
static void port_free(void *d)
|
|
|
|
{
|
|
|
|
struct port_chan *data = d;
|
|
|
|
|
|
|
|
port_kern_free(data->kernel_data);
|
|
|
|
kfree(data);
|
|
|
|
}
|
|
|
|
|
|
|
|
static int port_open(int input, int output, int primary, void *d,
|
|
|
|
char **dev_out)
|
|
|
|
{
|
|
|
|
struct port_chan *data = d;
|
|
|
|
int fd, err;
|
|
|
|
|
|
|
|
fd = port_wait(data->kernel_data);
|
|
|
|
if((fd >= 0) && data->raw){
|
|
|
|
CATCH_EINTR(err = tcgetattr(fd, &data->tt));
|
|
|
|
if(err)
|
2007-02-10 09:44:02 +00:00
|
|
|
return err;
|
2005-04-16 22:20:36 +00:00
|
|
|
|
|
|
|
err = raw(fd);
|
|
|
|
if(err)
|
2007-02-10 09:44:02 +00:00
|
|
|
return err;
|
2005-04-16 22:20:36 +00:00
|
|
|
}
|
|
|
|
*dev_out = data->dev;
|
2007-02-10 09:44:02 +00:00
|
|
|
return fd;
|
2005-04-16 22:20:36 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
static void port_close(int fd, void *d)
|
|
|
|
{
|
|
|
|
struct port_chan *data = d;
|
|
|
|
|
|
|
|
port_remove_dev(data->kernel_data);
|
|
|
|
os_close_file(fd);
|
|
|
|
}
|
|
|
|
|
2006-09-27 08:50:33 +00:00
|
|
|
const struct chan_ops port_ops = {
|
2005-04-16 22:20:36 +00:00
|
|
|
.type = "port",
|
|
|
|
.init = port_init,
|
|
|
|
.open = port_open,
|
|
|
|
.close = port_close,
|
|
|
|
.read = generic_read,
|
|
|
|
.write = generic_write,
|
2005-11-14 00:07:10 +00:00
|
|
|
.console_write = generic_console_write,
|
2005-04-16 22:20:36 +00:00
|
|
|
.window_size = generic_window_size,
|
|
|
|
.free = port_free,
|
|
|
|
.winch = 1,
|
|
|
|
};
|
|
|
|
|
|
|
|
int port_listen_fd(int port)
|
|
|
|
{
|
|
|
|
struct sockaddr_in addr;
|
|
|
|
int fd, err, arg;
|
|
|
|
|
|
|
|
fd = socket(PF_INET, SOCK_STREAM, 0);
|
2007-02-10 09:44:02 +00:00
|
|
|
if(fd == -1)
|
|
|
|
return -errno;
|
2005-04-16 22:20:36 +00:00
|
|
|
|
|
|
|
arg = 1;
|
|
|
|
if(setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, &arg, sizeof(arg)) < 0){
|
|
|
|
err = -errno;
|
|
|
|
goto out;
|
|
|
|
}
|
|
|
|
|
|
|
|
addr.sin_family = AF_INET;
|
|
|
|
addr.sin_port = htons(port);
|
|
|
|
addr.sin_addr.s_addr = htonl(INADDR_ANY);
|
|
|
|
if(bind(fd, (struct sockaddr *) &addr, sizeof(addr)) < 0){
|
|
|
|
err = -errno;
|
|
|
|
goto out;
|
|
|
|
}
|
2007-02-10 09:44:02 +00:00
|
|
|
|
2005-04-16 22:20:36 +00:00
|
|
|
if(listen(fd, 1) < 0){
|
|
|
|
err = -errno;
|
|
|
|
goto out;
|
|
|
|
}
|
|
|
|
|
|
|
|
err = os_set_fd_block(fd, 0);
|
|
|
|
if(err < 0)
|
|
|
|
goto out;
|
|
|
|
|
2007-02-10 09:44:02 +00:00
|
|
|
return fd;
|
2005-04-16 22:20:36 +00:00
|
|
|
out:
|
|
|
|
os_close_file(fd);
|
2007-02-10 09:44:02 +00:00
|
|
|
return err;
|
2005-04-16 22:20:36 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
struct port_pre_exec_data {
|
|
|
|
int sock_fd;
|
|
|
|
int pipe_fd;
|
|
|
|
};
|
|
|
|
|
|
|
|
void port_pre_exec(void *arg)
|
|
|
|
{
|
|
|
|
struct port_pre_exec_data *data = arg;
|
|
|
|
|
|
|
|
dup2(data->sock_fd, 0);
|
|
|
|
dup2(data->sock_fd, 1);
|
|
|
|
dup2(data->sock_fd, 2);
|
|
|
|
os_close_file(data->sock_fd);
|
|
|
|
dup2(data->pipe_fd, 3);
|
|
|
|
os_shutdown_socket(3, 1, 0);
|
|
|
|
os_close_file(data->pipe_fd);
|
|
|
|
}
|
|
|
|
|
|
|
|
int port_connection(int fd, int *socket, int *pid_out)
|
|
|
|
{
|
|
|
|
int new, err;
|
2007-02-10 09:44:02 +00:00
|
|
|
char *argv[] = { "/usr/sbin/in.telnetd", "-L",
|
2005-04-16 22:20:36 +00:00
|
|
|
"/usr/lib/uml/port-helper", NULL };
|
|
|
|
struct port_pre_exec_data data;
|
|
|
|
|
|
|
|
new = os_accept_connection(fd);
|
|
|
|
if(new < 0)
|
2007-02-10 09:44:02 +00:00
|
|
|
return new;
|
2005-04-16 22:20:36 +00:00
|
|
|
|
|
|
|
err = os_pipe(socket, 0, 0);
|
|
|
|
if(err < 0)
|
|
|
|
goto out_close;
|
|
|
|
|
|
|
|
data = ((struct port_pre_exec_data)
|
|
|
|
{ .sock_fd = new,
|
|
|
|
.pipe_fd = socket[1] });
|
|
|
|
|
2007-07-16 06:38:56 +00:00
|
|
|
err = run_helper(port_pre_exec, &data, argv);
|
2007-02-10 09:44:02 +00:00
|
|
|
if(err < 0)
|
2005-04-16 22:20:36 +00:00
|
|
|
goto out_shutdown;
|
|
|
|
|
|
|
|
*pid_out = err;
|
2007-02-10 09:44:02 +00:00
|
|
|
return new;
|
2005-04-16 22:20:36 +00:00
|
|
|
|
|
|
|
out_shutdown:
|
|
|
|
os_shutdown_socket(socket[0], 1, 1);
|
|
|
|
os_close_file(socket[0]);
|
2007-02-10 09:44:02 +00:00
|
|
|
os_shutdown_socket(socket[1], 1, 1);
|
2005-04-16 22:20:36 +00:00
|
|
|
os_close_file(socket[1]);
|
|
|
|
out_close:
|
|
|
|
os_close_file(new);
|
2007-02-10 09:44:02 +00:00
|
|
|
return err;
|
2005-04-16 22:20:36 +00:00
|
|
|
}
|