Thread (45 messages) 45 messages, 7 authors, 2012-07-31

[PATCH 11/17] Tools: hv: Gather DNS information

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STALE5186d REVIEWED: 1 (1M)

From: "K. Y. Srinivasan" <kys@microsoft.com>
Date: 2012-07-24 16:18:23
Also in: lkml, virtualization
Subsystem: hyper-v/azure core and drivers, the rest · Maintainers: "K. Y. Srinivasan", Haiyang Zhang, Wei Liu, Dexuan Cui, Long Li, Linus Torvalds

1 review trailer (1 from subsystem maintainers).

Now gather DNS information. This information cannot be gathered in
a distro independent fashion. 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>
---
 tools/hv/hv_kvp_daemon.c |   27 +++++++++++++++++++++++++++
 1 files changed, 27 insertions(+), 0 deletions(-)
diff --git a/tools/hv/hv_kvp_daemon.c b/tools/hv/hv_kvp_daemon.c
index b627236..9500cff 100644
--- a/tools/hv/hv_kvp_daemon.c
+++ b/tools/hv/hv_kvp_daemon.c
@@ -554,6 +554,33 @@ 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.
+	 * Input to the script:
+	 * 1) Interface name
+	 *
+	 * Following is the expected format of the information from the script:
+	 *
+	 * ipaddr1 (nameserver1)
+	 * ipaddr2 (nameserver2)
+	 * .
+	 * .
+	 */
+
+	memset(cmd, 0, sizeof(cmd));
+	strcat(cmd, "/sbin/hv_get_dns_info ");
+	strcat(cmd, if_name);
+
+	/*
+	 * Execute the command to gather DNS info.
+	 */
+	kvp_process_ipconfig_file(cmd, (char *)buffer->dns_addr,
+				(MAX_IP_ADDR_SIZE * 2), INET_ADDRSTRLEN, 0);
 }
 
 
-- 
1.7.4.1
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