Tools: hv: Don't return loopback addresses

Don't return loopback addresses and further don't terminate
the IP address strings with a semicolon. This is the current
behavior of Windows guests.

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

diff --git a/tools/hv/hv_kvp_daemon.c b/tools/hv/hv_kvp_daemon.c
index 6c7bcb9..13c2a14 100644 (file)
--- a/tools/hv/hv_kvp_daemon.c
+++ b/tools/hv/hv_kvp_daemon.c
@@ -43,6 +43,7 @@
 #include <sys/stat.h>
 #include <fcntl.h>
 #include <dirent.h>
+#include <net/if.h>
 
 /*
  * KVP protocol: The user mode component first registers with the
@@ -882,7 +883,7 @@ static int kvp_process_ip_address(void *addrp,
                addr_length = INET6_ADDRSTRLEN;
        }
 
-       if ((length - *offset) < addr_length + 1)
+       if ((length - *offset) < addr_length + 2)
                return HV_E_FAIL;
        if (str == NULL) {
                strcpy(buffer, "inet_ntop failed\n");
@@ -890,11 +891,13 @@ static int kvp_process_ip_address(void *addrp,
        }
        if (*offset == 0)
                strcpy(buffer, tmp);
-       else
+       else {
+               strcat(buffer, ";");
                strcat(buffer, tmp);
-       strcat(buffer, ";");
+       }
 
        *offset += strlen(str) + 1;
+
        return 0;
 }
 
@@ -956,7 +959,9 @@ kvp_get_ip_info(int family, char *if_name, int op,
                 * supported address families; if not we gather info on
                 * the specified address family.
                 */
-               if ((family != 0) && (curp->ifa_addr->sa_family != family)) {
+               if ((((family != 0) &&
+                        (curp->ifa_addr->sa_family != family))) ||
+                        (curp->ifa_flags & IFF_LOOPBACK)) {
                        curp = curp->ifa_next;
                        continue;
                }