Collect ipv4 and ipv6 gateway information.
Signed-off-by: K. Y. Srinivasan <kys@xxxxxxxxxxxxx>
Reviewed-by: Haiyang Zhang <haiyangz@xxxxxxxxxxxxx>
---
tools/hv/hv_kvp_daemon.c | 80 ++++++++++++++++++++++++++++++++++------------
1 files changed, 59 insertions(+), 21 deletions(-)
diff --git a/tools/hv/hv_kvp_daemon.c b/tools/hv/hv_kvp_daemon.c
index 101ab7f..68a4cc1 100644
--- a/tools/hv/hv_kvp_daemon.c
+++ b/tools/hv/hv_kvp_daemon.c
@@ -490,16 +490,40 @@ done:
return;
}
+static void kvp_process_ipconfig_file(char *config_file,
+ char *config_buf, int len,
+ int element_size, int offset)
+{
+ char buf[256];
+ char *p;
+ char *x;
+ FILE *file;
+
+ file = fopen(config_file, "r");
+ if (file == NULL)
+ return;
+
+ if (offset == 0)
+ memset(config_buf, 0, len);
+ while ((p = fgets(buf, sizeof(buf), file)) != NULL) {
+ if ((len - strlen(config_buf)) < (element_size + 1))
+ break;
+
+ x = strchr(p, '\n');
+ *x = '\0';
+ strcat(config_buf, p);
+ strcat(config_buf, ";");
+ }
+ fclose(file);
+
+}
+
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;
+ char *gw_config = "/var/opt/hyperv/.kvp_gw_cfg";
memset(cmd, 0, 512);
strcat(cmd, "cat /etc/resolv.conf 2>/tmp/null | ");
@@ -508,29 +532,43 @@ static void kvp_get_ipconfig_info(char *if_name,
/*
* Execute the command to gather dns info.
+ * Note that all buffers are arrays of __u16.
*/
system(cmd);
- file = fopen(dns_config, "r");
- if (file == NULL)
- return;
+ kvp_process_ipconfig_file(dns_config, (char *)buffer->dns_addr,
+ (MAX_IP_ADDR_SIZE * 2), INET6_ADDRSTRLEN, 0);
- dns_buf = (char *)(buffer->dns_addr);
/*
- * The buffer is an array of __u16 elements.
+ * Get the address of default gateway (ipv4).
*/
- 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;
+ memset(cmd, 0, 512);
+ strcat(cmd, "/sbin/ip -f inet route | grep -w ");
+ strcat(cmd, if_name);
+ strcat(cmd, " | awk '/default/ {print $3 }' > ");
+ strcat(cmd, "/var/opt/hyperv/.kvp_gw_cfg");
- x = strchr(p, '\n');
- *x = '\0';
- strcat(dns_buf, p);
- strcat(dns_buf, ";");
- }
- fclose(file);
+ /*
+ * Execute the command to gather gateway info.
+ */
+ system(cmd);
+ kvp_process_ipconfig_file(gw_config, (char *)buffer->gate_way,
+ (MAX_GATEWAY_SIZE * 2), INET_ADDRSTRLEN, 0);
+ /*
+ * Get the address of default gateway (ipv6).
+ */
+ memset(cmd, 0, 512);
+ strcat(cmd, "/sbin/ip -f inet6 route | grep -w ");
+ strcat(cmd, if_name);
+ strcat(cmd, " | awk '/default/ {print $3 }' > ");
+ strcat(cmd, "/var/opt/hyperv/.kvp_gw_cfg");
+ /*
+ * Execute the command to gather gateway info (ipv6).
+ */
+ system(cmd);
+ kvp_process_ipconfig_file(gw_config, (char *)buffer->gate_way,
+ (MAX_GATEWAY_SIZE * 2), INET6_ADDRSTRLEN,
+ strlen(gw_config));
}
--
1.7.4.1
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