minix/lib/libc/sys-minix/setsockopt.c
Ben Gras 2fe8fb192f Full switch to clang/ELF. Drop ack. Simplify.
There is important information about booting non-ack images in
docs/UPDATING. ack/aout-format images can't be built any more, and
booting clang/ELF-format ones is a little different. Updating to the
new boot monitor is recommended.

Changes in this commit:

	. drop boot monitor -> allowing dropping ack support
	. facility to copy ELF boot files to /boot so that old boot monitor
	  can still boot fairly easily, see UPDATING
	. no more ack-format libraries -> single-case libraries
	. some cleanup of OBJECT_FMT, COMPILER_TYPE, etc cases
	. drop several ack toolchain commands, but not all support
	  commands (e.g. aal is gone but acksize is not yet).
	. a few libc files moved to netbsd libc dir
	. new /bin/date as minix date used code in libc/
	. test compile fix
	. harmonize includes
	. /usr/lib is no longer special: without ack, /usr/lib plays no
	  kind of special bootstrapping role any more and bootstrapping
	  is done exclusively through packages, so releases depend even
	  less on the state of the machine making them now.
	. rename nbsd_lib* to lib*
	. reduce mtree
2012-02-14 14:52:02 +01:00

273 lines
5.2 KiB
C

#include <sys/cdefs.h>
#include "namespace.h"
#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>
#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>
#define DEBUG 0
static int _tcp_setsockopt(int sock, int level, int option_name,
const void *option_value, socklen_t option_len);
static int _udp_setsockopt(int sock, int level, int option_name,
const void *option_value, socklen_t option_len);
static int _uds_setsockopt(int sock, int level, int option_name,
const void *option_value, socklen_t option_len);
int setsockopt(int sock, int level, int option_name,
const void *option_value, socklen_t option_len)
{
int r;
nwio_tcpopt_t tcpopt;
nwio_udpopt_t udpopt;
struct sockaddr_un uds_addr;
r= ioctl(sock, NWIOGTCPOPT, &tcpopt);
if (r != -1 || (errno != ENOTTY && errno != EBADIOCTL))
{
if (r == -1)
{
/* Bad file descriptor */
return -1;
}
return _tcp_setsockopt(sock, level, option_name,
option_value, option_len);
}
r= ioctl(sock, NWIOGUDPOPT, &udpopt);
if (r != -1 || (errno != ENOTTY && errno != EBADIOCTL))
{
if (r == -1)
{
/* Bad file descriptor */
return -1;
}
return _udp_setsockopt(sock, level, option_name,
option_value, option_len);
}
r= ioctl(sock, NWIOGUDSADDR, &uds_addr);
if (r != -1 || (errno != ENOTTY && errno != EBADIOCTL))
{
if (r == -1)
{
/* Bad file descriptor */
return -1;
}
return _uds_setsockopt(sock, level, option_name,
option_value, option_len);
}
#if DEBUG
fprintf(stderr, "setsockopt: not implemented for fd %d\n", sock);
#endif
errno= ENOTSOCK;
return -1;
}
static int _tcp_setsockopt(int sock, int level, int option_name,
const void *option_value, socklen_t option_len)
{
int i;
if (level == SOL_SOCKET && option_name == SO_REUSEADDR)
{
if (option_len != sizeof(i))
{
errno= EINVAL;
return -1;
}
i= *(const int *)option_value;
if (!i)
{
/* At the moment there is no way to turn off
* reusing addresses.
*/
errno= ENOSYS;
return -1;
}
return 0;
}
if (level == SOL_SOCKET && option_name == SO_KEEPALIVE)
{
if (option_len != sizeof(i))
{
errno= EINVAL;
return -1;
}
i= *(const 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= *(const 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= *(const 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= *(const int *)option_value;
if (i)
{
/* At the moment there is no way to turn on
* nodelay.
*/
errno= ENOSYS;
return -1;
}
return 0;
}
#if DEBUG
fprintf(stderr, "_tcp_setsocketopt: level %d, name %d\n",
level, option_name);
#endif
errno= ENOSYS;
return -1;
}
static int _udp_setsockopt(int sock, int level, int option_name,
const void *option_value, socklen_t option_len)
{
#if DEBUG
fprintf(stderr, "_udp_setsocketopt: level %d, name %d\n",
level, option_name);
#endif
errno= ENOSYS;
return -1;
}
static int _uds_setsockopt(int sock, int level, int option_name,
const void *option_value, socklen_t option_len)
{
int i;
size_t size;
if (level == SOL_SOCKET && option_name == SO_RCVBUF)
{
if (option_len != sizeof(size))
{
errno= EINVAL;
return -1;
}
size= *(const size_t *)option_value;
return ioctl(sock, NWIOSUDSRCVBUF, &size);
}
if (level == SOL_SOCKET && option_name == SO_SNDBUF)
{
if (option_len != sizeof(size))
{
errno= EINVAL;
return -1;
}
size= *(const size_t *)option_value;
return ioctl(sock, NWIOSUDSSNDBUF, &size);
}
if (level == SOL_SOCKET && option_name == SO_REUSEADDR)
{
if (option_len != sizeof(i))
{
errno= EINVAL;
return -1;
}
i= *(const int *)option_value;
if (!i)
{
/* At the moment there is no way to turn off
* reusing addresses.
*/
errno= ENOSYS;
return -1;
}
return 0;
}
if (level == SOL_SOCKET && option_name == SO_PASSCRED)
{
if (option_len != sizeof(i))
{
errno= EINVAL;
return -1;
}
i= *(const int *)option_value;
if (!i)
{
/* credentials can always be received. */
errno= ENOSYS;
return -1;
}
return 0;
}
#if DEBUG
fprintf(stderr, "_uds_setsocketopt: level %d, name %d\n",
level, option_name);
#endif
errno= ENOSYS;
return -1;
}