1 /* Copyright (c) 2009, 2010 Nicira Networks
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at:
7 * http://www.apache.org/licenses/LICENSE-2.0
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
17 #include "xenserver.h"
23 #include "dynamic-string.h"
27 VLOG_DEFINE_THIS_MODULE(xenserver);
32 static const char filename[] = "/etc/xensource-inventory";
36 file = fopen(filename, "r");
38 if (errno == ENOENT) {
39 VLOG_INFO("not running on a XenServer");
41 VLOG_INFO("%s: open: %s", filename, strerror(errno));
46 while (fgets(line, sizeof line, file)) {
47 static const char leader[] = "INSTALLATION_UUID='";
48 const int leader_len = strlen(leader);
49 const int uuid_len = 36;
50 static const char trailer[] = "'\n";
51 const int trailer_len = strlen(trailer);
53 if (strlen(line) == leader_len + uuid_len + trailer_len
54 && !memcmp(line, leader, leader_len)
55 && !memcmp(line + leader_len + uuid_len, trailer, trailer_len)) {
56 char *host_uuid = xmemdup0(line + leader_len, uuid_len);
57 VLOG_INFO("running on XenServer, host-uuid %s", host_uuid);
63 VLOG_ERR("%s: INSTALLATION_UUID not found", filename);
68 xenserver_get_host_uuid(void)
70 static char *host_uuid;
74 host_uuid = read_host_uuid();