Now gather DNS information.

Signed-off-by: K. Y. Srinivasan <[email protected]>
Reviewed-by: Haiyang Zhang <[email protected]>
---
 tools/hv/hv_kvp_daemon.c |   50 ++++++++++++++++++++++++++++++++++++++++++++++
 1 files changed, 50 insertions(+), 0 deletions(-)

diff --git a/tools/hv/hv_kvp_daemon.c b/tools/hv/hv_kvp_daemon.c
index 8a153c5..101ab7f 100644
--- a/tools/hv/hv_kvp_daemon.c
+++ b/tools/hv/hv_kvp_daemon.c
@@ -490,6 +490,50 @@ done:
        return;
 }
 
+static void kvp_get_ipconfig_info(char *if_name,
+                                struct hv_kvp_ipaddr_value *buffer)
+{
+       char cmd[512];
+       char *dns_config = "/var/opt/hyperv/.kvp_dns_cfg";
+       FILE *file;
+       char buf[256];
+       char *dns_buf;
+       char *p;
+       char *x;
+
+       memset(cmd, 0, 512);
+       strcat(cmd, "cat /etc/resolv.conf 2>/tmp/null | ");
+       strcat(cmd, " awk '/nameserver/ {print $2 }' > ");
+       strcat(cmd, "/var/opt/hyperv/.kvp_dns_cfg");
+
+       /*
+        * Execute the command to gather dns info.
+        */
+       system(cmd);
+       file = fopen(dns_config, "r");
+       if (file == NULL)
+               return;
+
+       dns_buf = (char *)(buffer->dns_addr);
+       /*
+        * The buffer is an array of __u16 elements.
+        */
+       memset(dns_buf, 0, (MAX_IP_ADDR_SIZE * 2));
+       while ((p = fgets(buf, sizeof(buf), file)) != NULL) {
+               if (((MAX_IP_ADDR_SIZE * 2) - strlen(dns_buf)) <
+                               (INET6_ADDRSTRLEN + 1))
+                       break;
+
+               x = strchr(p, '\n');
+               *x = '\0';
+               strcat(dns_buf, p);
+               strcat(dns_buf, ";");
+       }
+       fclose(file);
+
+}
+
+
 static unsigned int hweight32(unsigned int *w)
 {
        unsigned int res = *w - ((*w >> 1) & 0x55555555);
@@ -649,6 +693,12 @@ kvp_get_ip_address(int family, char *if_name, int op,
                                strcat((char *)ip_buffer->sub_net, ";");
                                sn_offset += strlen(sn_str) + 1;
                        }
+
+                       /*
+                        * Collect other ip related configuration info.
+                        */
+
+                       kvp_get_ipconfig_info(if_name, ip_buffer);
                }
 
 gather_ipaddr:
-- 
1.7.4.1

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