minix/lib/ip/getsockname.c

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/*
getsockname()
from socket emulation library for Minix 2.0.x
*/
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#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 <net/gen/udp_io.h>
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/*
#define DEBUG 0
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*/
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/*
getsockname...
*/
int getsockname(int fd, struct sockaddr *_RESTRICT address,
socklen_t *_RESTRICT address_len)
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{
nwio_tcpconf_t tcpconf;
socklen_t len;
struct sockaddr_in sin;
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#ifdef DEBUG
fprintf(stderr,"mnx_getsockname: ioctl fd %d.\n", fd);
#endif
if (ioctl(fd, NWIOGTCPCONF, &tcpconf)==-1) {
#ifdef DEBUG
fprintf(stderr,"mnx_getsockname: error %d\n", errno);
#endif
return (-1);
}
#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
/*
addr->sin_addr.s_addr = tcpconf.nwtc_remaddr ;
addr->sin_port = tcpconf.nwtc_locport;
*/
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memset(&sin, '\0', sizeof(sin));
sin.sin_family= AF_INET;
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sin.sin_addr.s_addr= tcpconf.nwtc_remaddr ;
sin.sin_port= tcpconf.nwtc_locport;
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len= *address_len;
if (len > sizeof(sin))
len= sizeof(sin);
memcpy(address, &sin, len);
*address_len= len;
return 0;
}
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