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-rw-r--r--inet/tst-gethnm.c63
1 files changed, 63 insertions, 0 deletions
diff --git a/inet/tst-gethnm.c b/inet/tst-gethnm.c
new file mode 100644
index 0000000000..fe8e416de0
--- /dev/null
+++ b/inet/tst-gethnm.c
@@ -0,0 +1,63 @@
+/* Based on a test case by grd@algonet.se. */
+
+#include <netdb.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <unistd.h>
+#include <sys/param.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+
+int
+main (void)
+{
+ struct hostent *ent;
+ struct in_addr hostaddr;
+ int result = 0;
+
+ inet_aton ("127.0.0.1", (struct in_addr *) &hostaddr.s_addr);
+ ent = gethostbyaddr (&hostaddr, sizeof (hostaddr), AF_INET);
+ if (ent == NULL)
+ puts ("gethostbyaddr (...) == NULL");
+ else
+ {
+ puts ("Using gethostbyaddr(..):");
+ printf ("h_name: %s\n", ent->h_name);
+
+ if (ent->h_aliases == NULL)
+ puts ("ent->h_aliases == NULL");
+ else
+ printf ("h_aliases[0]: %s\n", ent->h_aliases[0]);
+ }
+
+ ent = gethostbyname ("127.0.0.1");
+ if (ent == NULL)
+ {
+ puts ("gethostbyname (\"127.0.0.1\") == NULL");
+ result = 1;
+ }
+ else
+ {
+ printf ("\nNow using gethostbyname(..):\n");
+ printf ("h_name: %s\n", ent->h_name);
+ if (strcmp (ent->h_name, "127.0.0.1") != 0)
+ {
+ puts ("ent->h_name != \"127.0.0.1\"");
+ result = 1;
+ }
+
+ if (ent->h_aliases == NULL)
+ {
+ puts ("ent->h_aliases == NULL");
+ result = 1;
+ }
+ else
+ {
+ printf ("h_aliases[0]: %s\n", ent->h_aliases[0]);
+ result |= ent->h_aliases[0] != NULL;
+ }
+ }
+
+ return result;
+}