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Date: Thu, 21 Jun 2012 14:31:45 -0700
From: "K. Y. Srinivasan" <kys@...rosoft.com>
To: gregkh@...uxfoundation.org, linux-kernel@...r.kernel.org,
devel@...uxdriverproject.org, virtualization@...ts.osdl.org,
ohering@...e.com, apw@...onical.com
Cc: "K. Y. Srinivasan" <kys@...rosoft.com>
Subject: [PATCH 13/13] Tools: hv: Implement the KVP verb - KVP_OP_SET_IP_INFO
Implement the KVP_OP_SET_IP_INFO verb. This operation sets the IP information
on the specified interface.
Signed-off-by: K. Y. Srinivasan <kys@...rosoft.com>
Reviewed-by: Haiyang Zhang <haiyangz@...rosoft.com>
---
tools/hv/hv_kvp_daemon.c | 198 ++++++++++++++++++++++++++++++++++++++++++++++
1 files changed, 198 insertions(+), 0 deletions(-)
diff --git a/tools/hv/hv_kvp_daemon.c b/tools/hv/hv_kvp_daemon.c
index 569f4d7..8eefdb5 100644
--- a/tools/hv/hv_kvp_daemon.c
+++ b/tools/hv/hv_kvp_daemon.c
@@ -847,6 +847,183 @@ getaddr_done:
return error;
}
+int parse_ip_val_buffer(char *in_buf, int *offset, char *out_buf, int out_len)
+{
+ int end;
+ char *x;
+ char *start;
+
+ /*
+ * in_buf has sequence of characters that are seperated by
+ * the character ';'. The last sequence is terminated by ';'.
+ */
+ start = in_buf + *offset;
+
+ x = strchr(start, ';');
+ if (x) {
+ *x = 0;
+ if ((x - start) <= out_len) {
+ strcpy(out_buf, start);
+ strcat(out_buf, "\n");
+ *offset = (x - start) + 1;
+ return 1;
+ }
+ }
+ return 0;
+}
+
+static int kvp_set_ip_info(char *if_name, struct hv_kvp_ipaddr_value *new_val)
+{
+ int error = 0;
+ char if_path[256];
+ char if_tmp_path[256];
+ FILE *file;
+ char addr[INET6_ADDRSTRLEN];
+ int i;
+ char cmd[256];
+ char str[256];
+ int offset;
+
+ /*
+ * Set the specified info in the appropriate config file
+ * for the specified interface and flush the settings.
+ * Currently we support distributions that maintain
+ * network configuration information in file:
+ * /etc/sysconfig/network-scripts/icfg-ifname
+ */
+ memset(if_path, 0, sizeof(if_path));
+ strcat(if_path, "/etc/sysconfig/network-scripts/ifcfg-");
+ strcat(if_path, if_name);
+
+ memset(if_tmp_path, 0, sizeof(if_tmp_path));
+ strcat(if_tmp_path, "/var/opt/hyperv/.kvp_ifcfg-");
+ strcat(if_tmp_path, if_name);
+
+ file = fopen(if_path, "r");
+ if (file == NULL) {
+ /*
+ * This system maintains the interface configuration
+ * information in a different location. Need to add
+ * code to deal with that. For now fail the operation.
+ */
+ return 1;
+ }
+
+ fclose(file);
+ /*
+ * The host gives us complete configuration information for the
+ * interface; just overwrite the current info.
+ * To deal with intermediate failues, first write a temp file.
+ */
+
+ file = fopen(if_tmp_path, "w");
+
+ if (file == NULL)
+ return 1;
+
+ if (new_val->dhcp_enabled) {
+ error = fputs("BOOTPROTO=dhcp\n", file);
+ if (error == EOF)
+ goto setval_error;
+
+ /*
+ * We are done!.
+ */
+ goto setval_done;
+ }
+
+ /*
+ * Write the configuration for ipaddress, netmask, gateway and
+ * name servers.
+ */
+ i = 0;
+ offset = 0;
+ memset(addr, 0, sizeof(addr));
+ memset(str, 0, sizeof(str));
+
+ while (parse_ip_val_buffer((char *)new_val->ip_addr, &offset, addr,
+ (MAX_IP_ADDR_SIZE * 2))) {
+ sprintf(str, "IPADDR_%d=", i++);
+ strcat(str, addr);
+ error = fputs(str, file);
+ if (error == EOF)
+ goto setval_error;
+ }
+
+ i = 0;
+ offset = 0;
+ memset(addr, 0, sizeof(addr));
+ memset(str, 0, sizeof(str));
+
+ while (parse_ip_val_buffer((char *)new_val->sub_net, &offset, addr,
+ (MAX_IP_ADDR_SIZE * 2))) {
+ sprintf(str, "NETMAK_%d=", i++);
+ strcat(str, addr);
+ error = fputs(str, file);
+ if (error == EOF)
+ goto setval_error;
+ }
+
+ i = 0;
+ offset = 0;
+ memset(addr, 0, sizeof(addr));
+ memset(str, 0, sizeof(str));
+
+ while (parse_ip_val_buffer((char *)new_val->gate_way, &offset, addr,
+ (MAX_IP_ADDR_SIZE * 2))) {
+ sprintf(str, "GATEWAY_%d=", i++);
+ strcat(str, addr);
+ error = fputs(str, file);
+ if (error == EOF)
+ goto setval_error;
+ }
+
+ i = 0;
+ offset = 0;
+ memset(addr, 0, sizeof(addr));
+ memset(str, 0, sizeof(str));
+
+ while (parse_ip_val_buffer((char *)new_val->dns_addr, &offset, addr,
+ (MAX_IP_ADDR_SIZE * 2))) {
+ sprintf(str, "DNS%d=", i++);
+ strcat(str, addr);
+ error = fputs(str, file);
+ if (error == EOF)
+ goto setval_error;
+ }
+
+ error = fputs("ONBOOT=yes\n", file);
+ if (error == EOF)
+ goto setval_error;
+
+ error = fputs("PEERDNS=yes\n", file);
+ if (error == EOF)
+ goto setval_error;
+
+setval_done:
+ /*
+ * Now move the config file to the final location.
+ */
+ fclose(file);
+ memset(cmd, 0, sizeof(cmd));
+ strcat(cmd, "mv ");
+ strcat(cmd, if_tmp_path);
+ strcat(cmd, " ");
+ strcat(cmd, if_path);
+ system(cmd);
+
+ /*
+ * Now restart the network to flush the parameters.
+ */
+ memset(cmd, 0, sizeof(cmd));
+ strcat(cmd, "service network restart");
+ system(cmd);
+ return 0;
+
+setval_error:
+ fclose(file);
+ return error;
+}
static int
kvp_get_domain_name(char *buffer, int length)
@@ -1048,6 +1225,27 @@ int main(void)
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(
+ (char *)kvp_ip_val->adapter_id,
+ MAX_ADAPTER_ID_SIZE);
+ if (if_name == NULL) {
+ /*
+ * We could not map the guid to an
+ * interface name; return error.
+ */
+ *((int *)(&hv_msg->kvp_hdr.operation)) =
+ HV_ERROR_DEVICE_NOT_CONNECTED;
+ break;
+ }
+ error = kvp_set_ip_info(if_name, kvp_ip_val);
+ if (error)
+ *((int *)(&hv_msg->kvp_hdr.operation)) =
+ HV_ERROR_DEVICE_NOT_CONNECTED;
+
+ free(if_name);
+ break;
case KVP_OP_SET:
if (kvp_key_add_or_modify(hv_msg->kvp_hdr.pool,
hv_msg->body.kvp_set.data.key,
--
1.7.4.1
--
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