Tools: hv: Gather DNS information

Now, gather DNS information. Invoke an external script (that can be
distro dependent) to gather the DNS information.

Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Reviewed-by: Haiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

1 files changed, 23 insertions, 0 deletions

diff --git a/tools/hv/hv_kvp_daemon.c b/tools/hv/hv_kvp_daemon.c
index 026bf0e5d180..cfa23a115d18 100644
--- a/tools/hv/hv_kvp_daemon.c
+++ b/tools/hv/hv_kvp_daemon.c
@@ -549,6 +549,29 @@ static void kvp_get_ipconfig_info(char *if_name,
         kvp_process_ipconfig_file(cmd, (char *)buffer->gate_way,
                                 (MAX_GATEWAY_SIZE * 2), INET6_ADDRSTRLEN, 1);
 
+
+        /*
+         * Gather the DNS  state.
+         * Since there is no standard way to get this information
+         * across various distributions of interest; we just invoke
+         * an external script that needs to be ported across distros
+         * of interest.
+         *
+         * Following is the expected format of the information from the script:
+         *
+         * ipaddr1 (nameserver1)
+         * ipaddr2 (nameserver2)
+         * .
+         * .
+         */
+
+        sprintf(cmd, "%s",  "hv_get_dns_info");
+
+        /*
+         * Execute the command to gather DNS info.
+         */
+        kvp_process_ipconfig_file(cmd, (char *)buffer->dns_addr,
+                                (MAX_IP_ADDR_SIZE * 2), INET_ADDRSTRLEN, 0);
 }