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/*
* hostentp_ghba_r.c:
* Test program to see whether gethostbyaddr_r takes 7 arguments and returns
* struct hostent*.
*/
static const char rcsid[] = "$Id$";
#include <sys/types.h>
#include <errno.h>
#include <netdb.h>
#include <stdio.h>
#include <stdlib.h>
#include <netinet/in.h>
int main(void) {
struct in_addr localhost;
struct hostent hostbuf, *hp;
char *buf;
int herr;
size_t buflen = 1024;
localhost.s_addr = htonl(INADDR_LOOPBACK);
buf = malloc(buflen);
while ((hp = gethostbyaddr_r((char*)&localhost, sizeof(struct in_addr),
AF_INET, &hostbuf, buf, buflen, &herr))
== NULL
&& errno == ERANGE)
buf = (char*)realloc(buf, buflen *= 2);
/* We assume that the loopback address can always be resolved if
* gethostbyaddr_r is actually working. */
if (hp == NULL) {
fprintf(stderr, "errno = %d, herr = %d\n", errno, herr);
return -1;
} else
return 0;
}
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