myaddrs1.c

unix网络编程卷1：套接口API的全书源码

#include	"unp.h"
#include	<sys/param.h>

char **
my_addrs(int *addrtype)
{
	struct hostent	*hptr;
	char			myname[MAXHOSTNAMELEN];

	if (gethostname(myname, sizeof(myname)) < 0)
		return(NULL);

	if ( (hptr = gethostbyname(myname)) == NULL)
		return(NULL);

	*addrtype = hptr->h_addrtype;
	return(hptr->h_addr_list);
}