Tools: hv: kvp

index cfa23a1..6fb2c1c 100644
@@ -524,6 +524,9 @@ static void kvp_get_ipconfig_info(char *if_name,
 				 struct hv_kvp_ipaddr_value *buffer)
 {
 	char cmd[512];
+	char dhcp_info[128];
+	char *p;
+	FILE *file;
 
 	/*
 	 * Get the address of default gateway (ipv4).

@@ -572,6 +575,34 @@ static void kvp_get_ipconfig_info(char *if_name,
 	 */
 	kvp_process_ipconfig_file(cmd, (char *)buffer->dns_addr,
 				(MAX_IP_ADDR_SIZE * 2), INET_ADDRSTRLEN, 0);
+
+	/*
+	 * Gather the DHCP state.
+	 * We will gather this state by invoking an external script.
+	 * The parameter to the script is the interface name.
+	 * Here is the expected output:
+	 *
+	 * Enabled: DHCP enabled.
+	 */
+
+	sprintf(cmd, "%s %s", "hv_get_dhcp_info", if_name);
+
+	file = popen(cmd, "r");
+	if (file == NULL)
+		return;
+
+	p = fgets(dhcp_info, sizeof(dhcp_info), file);
+	if (p == NULL) {
+		pclose(file);
+		return;
+	}
+
+	if (!strncmp(p, "Enabled", 7))
+		buffer->dhcp_enabled = 1;
+	else
+		buffer->dhcp_enabled = 0;
+
+	pclose(file);
 }
 
 

index 7585d55..e73b852 100644
@@ -191,6 +191,8 @@ enum hv_kvp_exchg_pool {
 #define HV_ERROR_NOT_SUPPORTED		0x80070032
 #define HV_ERROR_MACHINE_LOCKED		0x800704F7
 #define HV_ERROR_DEVICE_NOT_CONNECTED	0x8007048F
+#define HV_INVALIDARG			0x80070057
+#define HV_GUID_NOTFOUND		0x80041002
 
 #define ADDR_FAMILY_NONE	0x00
 #define ADDR_FAMILY_IPV4	0x01

491 lines not on this page · raw message

index ac144b9..849c438 100644
@@ -765,7 +765,7 @@ static int kvp_process_ip_address(void *addrp,
 }
 
 static int
-kvp_get_ip_address(int family, char *if_name, int op,
+kvp_get_ip_info(int family, char *if_name, int op,
 		 void  *out_buffer, int length)
 {
 	struct ifaddrs *ifap;

@@ -1468,12 +1468,12 @@ int main(void)
 			strcpy(key_value, lic_version);
 			break;
 		case NetworkAddressIPv4:
-			kvp_get_ip_address(AF_INET, NULL, KVP_OP_ENUMERATE,
+			kvp_get_ip_info(AF_INET, NULL, KVP_OP_ENUMERATE,
 				key_value, HV_KVP_EXCHANGE_MAX_VALUE_SIZE);
 			strcpy(key_name, "NetworkAddressIPv4");
 			break;
 		case NetworkAddressIPv6:
-			kvp_get_ip_address(AF_INET6, NULL, KVP_OP_ENUMERATE,
+			kvp_get_ip_info(AF_INET6, NULL, KVP_OP_ENUMERATE,
 				key_value, HV_KVP_EXCHANGE_MAX_VALUE_SIZE);
 			strcpy(key_name, "NetworkAddressIPv6");
 			break;

index 849c438..c8e1013 100644
@@ -603,6 +603,69 @@ static char *kvp_if_name_to_mac(char *if_name)
 }
 
 
+/*
+ * Retrieve the interface name given tha MAC address.
+ */
+
+static char *kvp_mac_to_if_name(char *mac)
+{
+	DIR *dir;
+	struct dirent *entry;
+	FILE    *file;
+	char    *p, *q, *x;
+	char    *if_name = NULL;
+	char    buf[256];
+	char *kvp_net_dir = "/sys/class/net/";
+	char dev_id[256];
+	int i;
+
+	dir = opendir(kvp_net_dir);
+	if (dir == NULL)
+		return NULL;
+
+	snprintf(dev_id, sizeof(dev_id), kvp_net_dir);
+	q = dev_id + strlen(kvp_net_dir);
+
+	while ((entry = readdir(dir)) != NULL) {
+		/*
+		 * Set the state for the next pass.
+		 */
+		*q = '\0';
+
+		strcat(dev_id, entry->d_name);
+		strcat(dev_id, "/address");
+
+		file = fopen(dev_id, "r");
+		if (file == NULL)
+			continue;
+
+		p = fgets(buf, sizeof(buf), file);
+		if (p) {
+			x = strchr(p, '\n');
+			if (x)
+				*x = '\0';
+
+			for (i = 0; i < strlen(p); i++)
+				p[i] = toupper(p[i]);
+
+			if (!strcmp(p, mac)) {
+				/*
+				 * Found the MAC match; return the interface
+				 * name. The caller will free the memory.
+				 */
+				if_name = strdup(entry->d_name);
+				fclose(file);
+				break;
+			}
+		}
+		fclose(file);
+	}
+
+	closedir(dir);
+	return if_name;
+}
+
+
 static void kvp_process_ipconfig_file(char *cmd,
 					char *config_buf, int len,
 					int element_size, int offset)

@@ -749,10 +812,10 @@ static int kvp_process_ip_address(void *addrp,
 	}
 
 	if ((length - *offset) < addr_length + 1)
-		return 1;
+		return HV_E_FAIL;
 	if (str == NULL) {
 		strcpy(buffer, "inet_ntop failed\n");
-		return 1;
+		return HV_E_FAIL;
 	}
 	if (*offset == 0)
 		strcpy(buffer, tmp);

@@ -796,7 +859,7 @@ kvp_get_ip_info(int family, char *if_name, int op,
 
 	if (getifaddrs(&ifap)) {
 		strcpy(buffer, "getifaddrs failed\n");
-		return 1;
+		return HV_E_FAIL;
 	}
 
 	curp = ifap;

@@ -1386,6 +1449,30 @@ int main(void)
 		}
 
 		switch (op) {
+		case KVP_OP_GET_IP_INFO:
+			kvp_ip_val = &hv_msg->body.kvp_ip_val;
+			if_name =
+			kvp_mac_to_if_name((char *)kvp_ip_val->adapter_id);
+
+			if (if_name == NULL) {
+				/*
+				 * We could not map the mac address to an
+				 * interface name; return error.
+				 */
+				hv_msg->error = HV_E_FAIL;
+				break;
+			}
+			error = kvp_get_ip_info(
+						0, if_name, KVP_OP_GET_IP_INFO,
+						kvp_ip_val,
+						(MAX_IP_ADDR_SIZE * 2));
+
+			if (error)
+				hv_msg->error = error;
+
+			free(if_name);
+			break;
+
 		case KVP_OP_SET_IP_INFO:
 			kvp_ip_val = &hv_msg->body.kvp_ip_val;
 			if_name = kvp_get_if_name(