#include <errno.h>

#include <stdio.h>

#include <sys/ioctl.h>

#include <sys/socket.h>

#include <sys/un.h>

#include <net/gen/in.h>

#include <net/gen/tcp.h>

#include <net/gen/tcp_io.h>

#define DEBUG 0

static int _tcp_shutdown(int socket, int how);

static int _uds_shutdown(int socket, int how);

int shutdown(int socket, int how)

{

int r;

struct sockaddr_un uds_addr;

nwio_tcpconf_t tcpconf;

r= ioctl(socket, NWIOGTCPCONF, &tcpconf);

if (r != -1 || (errno != ENOTTY && errno != EBADIOCTL))

{

if (r == -1)

{

/* Bad file descriptor */

return -1;

}

return _tcp_shutdown(socket, how);

}

r= ioctl(socket, NWIOGUDSADDR, &uds_addr);

if (r != -1 || (errno != ENOTTY && errno != EBADIOCTL))

{

if (r == -1)

{

/* Bad file descriptor */

return -1;

}

return _uds_shutdown(socket, how);

}

#if DEBUG

fprintf(stderr, "shutdown: not implemented for fd %d\n", socket);

#endif

errno= ENOSYS;

return -1;

}

static int _tcp_shutdown(int socket, int how)

{

int r;

if (how == SHUT_WR || how == SHUT_RDWR)

{

r= ioctl(socket, NWIOTCPSHUTDOWN, NULL);

if (r == -1)

return -1;

if (how == SHUT_WR)

return 0;

}

/* We can't shutdown the read side of the socket. */

errno= ENOSYS;

return -1;

}

static int _uds_shutdown(int socket, int how)

{

return ioctl(socket, NWIOSUDSSHUT, &how);

}