minix/lib/libc/ip/setsockopt.c

183 lines
3.4 KiB
C
Raw Normal View History

2005-07-27 13:57:59 +02:00
#include <assert.h>
#include <errno.h>
#include <stdio.h>
#include <sys/ioctl.h>
#include <sys/socket.h>
#include <sys/types.h>
#include <netinet/tcp.h>
2005-07-27 13:57:59 +02:00
#include <net/gen/in.h>
#include <net/gen/tcp.h>
#include <net/gen/tcp_io.h>
#include <net/gen/udp.h>
#include <net/gen/udp_io.h>
2005-07-27 13:57:59 +02:00
#define DEBUG 0
static int _tcp_setsockopt(int socket, int level, int option_name,
const void *option_value, socklen_t option_len);
static int _udp_setsockopt(int socket, int level, int option_name,
const void *option_value, socklen_t option_len);
2005-07-27 13:57:59 +02:00
int setsockopt(int socket, int level, int option_name,
const void *option_value, socklen_t option_len)
{
int r;
nwio_tcpopt_t tcpopt;
nwio_udpopt_t udpopt;
2005-07-27 13:57:59 +02:00
r= ioctl(socket, NWIOGTCPOPT, &tcpopt);
if (r != -1 || errno != ENOTTY)
{
if (r == -1)
{
/* Bad file descriptor */
return -1;
}
return _tcp_setsockopt(socket, level, option_name,
option_value, option_len);
}
r= ioctl(socket, NWIOGUDPOPT, &udpopt);
if (r != -1 || errno != ENOTTY)
{
if (r == -1)
{
/* Bad file descriptor */
return -1;
}
return _udp_setsockopt(socket, level, option_name,
option_value, option_len);
}
2005-07-27 13:57:59 +02:00
#if DEBUG
fprintf(stderr, "setsockopt: not implemented for fd %d\n", socket);
#endif
errno= ENOTSOCK;
2005-07-27 13:57:59 +02:00
return -1;
}
static int _tcp_setsockopt(int socket, int level, int option_name,
const void *option_value, socklen_t option_len)
{
int i;
2010-01-07 10:53:08 +01:00
if (level == SOL_SOCKET && option_name == SO_REUSEADDR)
{
if (option_len != sizeof(i))
{
errno= EINVAL;
return -1;
}
i= *(int *)option_value;
if (!i)
{
/* At the moment there is no way to turn off
* reusing addresses.
*/
errno= ENOSYS;
return -1;
}
return 0;
}
2005-07-27 13:57:59 +02:00
if (level == SOL_SOCKET && option_name == SO_KEEPALIVE)
{
if (option_len != sizeof(i))
{
errno= EINVAL;
return -1;
}
i= *(int *)option_value;
if (!i)
{
/* At the moment there is no way to turn off
* keepalives.
*/
errno= ENOSYS;
return -1;
}
return 0;
}
if (level == SOL_SOCKET && option_name == SO_RCVBUF)
{
if (option_len != sizeof(i))
{
errno= EINVAL;
return -1;
}
i= *(int *)option_value;
if (i > 32*1024)
{
/* The receive buffer is limited to 32K at the moment.
*/
errno= ENOSYS;
return -1;
}
/* There is no way to reduce the receive buffer, do we have to
* let this call fail for smaller buffers?
*/
return 0;
}
if (level == SOL_SOCKET && option_name == SO_SNDBUF)
{
if (option_len != sizeof(i))
{
errno= EINVAL;
return -1;
}
i= *(int *)option_value;
if (i > 32*1024)
{
/* The send buffer is limited to 32K at the moment.
*/
errno= ENOSYS;
return -1;
}
/* There is no way to reduce the send buffer, do we have to
* let this call fail for smaller buffers?
*/
return 0;
}
if (level == IPPROTO_TCP && option_name == TCP_NODELAY)
{
if (option_len != sizeof(i))
{
errno= EINVAL;
return -1;
}
i= *(int *)option_value;
if (i)
{
/* At the moment there is no way to turn on
* nodelay.
*/
errno= ENOSYS;
return -1;
}
return 0;
}
2005-08-25 17:10:57 +02:00
#if DEBUG
2005-07-27 13:57:59 +02:00
fprintf(stderr, "_tcp_setsocketopt: level %d, name %d\n",
level, option_name);
2005-08-25 17:10:57 +02:00
#endif
2005-07-27 13:57:59 +02:00
2005-08-25 17:10:57 +02:00
errno= ENOSYS;
return -1;
2005-07-27 13:57:59 +02:00
}
static int _udp_setsockopt(int socket, int level, int option_name,
const void *option_value, socklen_t option_len)
{
int i;
#if DEBUG
fprintf(stderr, "_udp_setsocketopt: level %d, name %d\n",
level, option_name);
#endif
errno= ENOSYS;
return -1;
}