minix/lib/libc/sys-minix/getsockname.c

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/*
getsockname()
from socket emulation library for Minix 2.0.x
*/
#include <sys/cdefs.h>
#include "namespace.h"
#include <minix/ansi.h>
#include <errno.h>
#include <stdio.h>
#include <string.h>
#include <sys/ioctl.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <net/gen/in.h>
#include <net/gen/tcp.h>
#include <net/gen/tcp_io.h>
#include <net/gen/udp.h>
#include <sys/un.h>
/*
#define DEBUG 0
*/
static int _tcp_getsockname(int fd, struct sockaddr *_RESTRICT address,
socklen_t *_RESTRICT address_len, nwio_tcpconf_t *tcpconfp);
static int _uds_getsockname(int fd, struct sockaddr *_RESTRICT address,
socklen_t *_RESTRICT address_len, struct sockaddr_un *uds_addr);
int getsockname(int fd, struct sockaddr *_RESTRICT address,
socklen_t *_RESTRICT address_len)
{
int r;
nwio_tcpconf_t tcpconf;
struct sockaddr_un uds_addr;
#ifdef DEBUG
fprintf(stderr,"mnx_getsockname: ioctl fd %d.\n", fd);
#endif
r= ioctl(fd, NWIOGTCPCONF, &tcpconf);
if (r != -1 || (errno != ENOTTY && errno != EBADIOCTL))
{
if (r == -1)
{
/* Bad file descriptor */
return -1;
}
return _tcp_getsockname(fd, address, address_len, &tcpconf);
}
r= ioctl(fd, NWIOGUDSADDR, &uds_addr);
if (r != -1 || (errno != ENOTTY && errno != EBADIOCTL))
{
if (r == -1)
{
/* Bad file descriptor */
return -1;
}
return _uds_getsockname(fd, address, address_len, &uds_addr);
}
#if DEBUG
fprintf(stderr, "getsockname: not implemented for fd %d\n", socket);
#endif
errno= ENOSYS;
return -1;
}
static int _tcp_getsockname(int fd, struct sockaddr *_RESTRICT address,
socklen_t *_RESTRICT address_len, nwio_tcpconf_t *tcpconf)
{
socklen_t len;
struct sockaddr_in sin;
#ifdef DEBUG1
fprintf(stderr, "mnx_getsockname: from %s, %u",
inet_ntoa(tcpconf.nwtc_remaddr),
ntohs(tcpconf.nwtc_remport));
fprintf(stderr," for %s, %u\n",
inet_ntoa(tcpconf.nwtc_locaddr),
ntohs(tcpconf.nwtc_locport));
#endif
memset(&sin, '\0', sizeof(sin));
sin.sin_family= AF_INET;
sin.sin_addr.s_addr= tcpconf->nwtc_locaddr ;
sin.sin_port= tcpconf->nwtc_locport;
len= *address_len;
if (len > sizeof(sin))
len= sizeof(sin);
memcpy(address, &sin, len);
*address_len= len;
return 0;
}
static int _uds_getsockname(int fd, struct sockaddr *_RESTRICT address,
socklen_t *_RESTRICT address_len, struct sockaddr_un *uds_addr)
{
socklen_t len;
if (uds_addr->sun_family != AF_UNIX)
{
errno= EINVAL;
return -1;
}
len= *address_len;
if (len > sizeof(struct sockaddr_un))
len = sizeof(struct sockaddr_un);
memcpy(address, uds_addr, len);
*address_len= len;
return 0;
}