[Libvirt-cim] [PATCH] Add a bit more logic to check for FQDN

[Kaitlin Rupert]

# HG changeset patch
# User Kaitlin Rupert <karupert at us.ibm.com>
# Date 1222703637 25200
# Node ID 330a579be15c3967ea54158f89c85fe10363db02
# Parent  3c3b312723817f4a418658e68de19cf38d51fc4f
Add a bit more logic to check for FQDN.

Depending on how /etc/hosts is arranged, it's possible for gethostbyname() a non-FQDN.  This happens on F10 is /etc/hosts has something like:

hostname hostname.my.domain localhost

This bit a logic looks through the domains in h_aliases to see if a FQDN exists.

Signed-off-by: Kaitlin Rupert <karupert at us.ibm.com>

diff -r 3c3b31272381 -r 330a579be15c src/Virt_HostSystem.c
--- a/src/Virt_HostSystem.c	Mon Sep 29 08:53:27 2008 -0700
+++ b/src/Virt_HostSystem.c	Mon Sep 29 08:53:57 2008 -0700
@@ -41,6 +41,7 @@
 static int resolve_host(char *host, char *buf, int size)
 {
         struct hostent *he;
+        int i;
 
         he = gethostbyname(host);
         if (he == NULL) {
@@ -48,6 +49,15 @@
                 return -1;
         }
 
+        for (i = 0; he->h_aliases[i] != NULL; i++) {
+               if ((strchr(he->h_aliases[i], '.') != NULL) &&
+                   (strstr(he->h_aliases[i], "localhost") == NULL)) {
+                           strncpy(buf, he->h_aliases[i], size);
+                           return 0;
+                   }
+        }
+
+        CU_DEBUG("Unable to find FQDN, using hostname.");
         strncpy(buf, he->h_name, size);
 
         return 0;