I ran the following source code in x86(glibc) and MIPS(uClibc).
In the x86, it has no problem.
In the MIPS, however, my program is aborted.
Is this a bug of gethostbyname_r() ?
I don't know why it is aborted.
In the x86, following are printed.
gethostname_r() with www.yahoo.com
host_name : www-real.wa1.b.yahoo.com
gethostname_r() with cache.download.bluray.dreamworks.com
host_name : dreamworks.cache.bdlive.hddvd.ddsnsbu.com
gethostname_r() with www.yahoo.com
host_name : www-real.wa1.b.yahoo.com
I'm alive.....
I'm alive.....
I'm alive.....
In the MIPS, following are printed.
gethostname_r() with www.yahoo.com
host_name : www-real.wa1.b.yahoo.com
gethostname with cache.download.bluray.dreamworks.com
gethostbyname_r:: Success
host_name : ./a.out
gethostname with www.yahoo.com
Aborted
#
==============================================
#include <errno.h>
#include <stdio.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <netdb.h>
#include <string.h>
#include <stdlib.h>
#include <ctype.h>
#include <unistd.h>
#define TRUE 1
#define FALSE 0
int main(int argc, char **argv)
{
const char* hostname = "cache.download.bluray.dreamworks.com";
const char* hostname2 = "www.yahoo.com";
char buf[512], buf2[512];
int ret, h_error=0, h_error2 = 0;
struct hostent res, res2, *hp = 0, *hp2 = 0;
printf("gethostname with %s, now.\n", hostname2);
ret = gethostbyname_r(hostname2, &res, buf, sizeof(buf), &hp,
&h_error);
if(0 != ret)
perror("gethostbyname_r:");
printf("host_name : %s\n", res.h_name);
usleep(1000);
printf("gethostname_r() with %s\n", hostname);
ret = gethostbyname_r(hostname, &res2, buf2, sizeof(buf2), &hp2,
&h_error2);
if(0 != ret)
perror("gethostbyname_r:");
printf("host_name : %s\n", res2.h_name);
usleep(1000);
printf("gethostname_r() with %s\n", hostname2);
ret = gethostbyname_r(hostname2, &res, buf, sizeof(buf), &hp,
&h_error);
if(0 != ret)
perror("gethostbyname_r:");
printf("host_name : %s\n", hp->h_name);
while(TRUE) {
printf("I'm alive.....\n\n");
usleep(1000000);
}
}
--
Don't Worry, Be Happy
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