1/*
2 * Copyright (c) 2019, Oracle and/or its affiliates. All rights reserved.
3 * Copyright (c) 2019 SAP SE. All rights reserved.
4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
5 *
6 * This code is free software; you can redistribute it and/or modify it
7 * under the terms of the GNU General Public License version 2 only, as
8 * published by the Free Software Foundation.
9 *
10 * This code is distributed in the hope that it will be useful, but WITHOUT
11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
13 * version 2 for more details (a copy is included in the LICENSE file that
14 * accompanied this code).
15 *
16 * You should have received a copy of the GNU General Public License version
17 * 2 along with this work; if not, write to the Free Software Foundation,
18 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
19 *
20 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
21 * or visit www.oracle.com if you need additional information or have any
22 * questions.
23 *
24 */
25
26#include "precompiled.hpp"
27#include "runtime/os.hpp"
28#include "utilities/virtualizationSupport.hpp"
29
30static void *dlHandle = NULL;
31
32static GuestLib_StatGet_t GuestLib_StatGet = NULL;
33static GuestLib_StatFree_t GuestLib_StatFree = NULL;
34
35static bool has_host_information = false;
36static bool has_resource_information = false;
37
38// host + resource information; avoid the session and other special info vectors
39static char host_information[300];
40static char extended_resource_info_at_startup[600];
41
42void VirtualizationSupport::initialize() {
43 // open vmguestlib and bind SDK functions
44 char ebuf[1024];
45 dlHandle = os::dll_load("vmGuestLib", ebuf, sizeof ebuf);
46
47#ifdef LINUX
48 if (dlHandle == NULL) {
49 // the open-vm-tools have a different guest lib name
50 // on some distros e.g. SLES12 the open-vm-tools are the default,
51 // so use the different libname as a fallback
52 dlHandle = os::dll_load("/usr/lib64/libguestlib.so.0", ebuf, sizeof ebuf);
53 }
54#endif
55 if (dlHandle == NULL) {
56 return;
57 }
58
59 GuestLib_StatGet = CAST_TO_FN_PTR(GuestLib_StatGet_t, os::dll_lookup(dlHandle, "VMGuestLib_StatGet"));
60 GuestLib_StatFree = CAST_TO_FN_PTR(GuestLib_StatFree_t, os::dll_lookup(dlHandle, "VMGuestLib_StatFree"));
61
62 if (GuestLib_StatGet != NULL && GuestLib_StatFree != NULL) {
63 char* result_info = NULL;
64 size_t result_size = 0;
65 VMGuestLibError sg_error = GuestLib_StatGet("text", "resources", &result_info, &result_size);
66 if (sg_error == VMGUESTLIB_ERROR_SUCCESS) {
67 has_resource_information = true;
68 os::snprintf(extended_resource_info_at_startup, sizeof(extended_resource_info_at_startup), "%s", result_info);
69 GuestLib_StatFree(result_info, result_size);
70 }
71 sg_error = GuestLib_StatGet("text", "host", &result_info, &result_size);
72 if (sg_error == VMGUESTLIB_ERROR_SUCCESS) {
73 has_host_information = true;
74 os::snprintf(host_information, sizeof(host_information), "%s", result_info);
75 GuestLib_StatFree(result_info, result_size);
76 }
77 }
78}
79
80void VirtualizationSupport::print_virtualization_info(outputStream* st) {
81 if (has_host_information) {
82 st->print_cr("vSphere host information:");
83 st->print_cr("%s", host_information);
84 }
85 // resource info at startup
86 if (has_resource_information) {
87 st->print_cr("vSphere resource information collected at VM startup:");
88 st->print_cr("%s", extended_resource_info_at_startup);
89 }
90 // current resource info
91 if (GuestLib_StatGet != NULL && GuestLib_StatFree != NULL) {
92 char* result_info = NULL;
93 size_t result_size = 0;
94 VMGuestLibError sg_error = GuestLib_StatGet("text", "resources", &result_info, &result_size);
95 if (sg_error == VMGUESTLIB_ERROR_SUCCESS) {
96 st->print_cr("vSphere resource information available now:");
97 st->print_cr("%s", result_info);
98 GuestLib_StatFree(result_info, result_size);
99 }
100 }
101}
102
103