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/globals.hpp"
28 #include "runtime/os.hpp"
29 #include "utilities/virtualizationSupport.hpp"
30
31 static void *dlHandle = NULL;
32
33 static GuestLib_StatGet_t GuestLib_StatGet = NULL;
34 static GuestLib_StatFree_t GuestLib_StatFree = NULL;
35
36 static bool has_host_information = false;
37 static bool has_resource_information = false;
38
39 // host + resource information; avoid the session and other special info vectors
40 static char host_information[300];
41 static char extended_resource_info_at_startup[600];
42
initialize()43 void VirtualizationSupport::initialize() {
44 if (!ExtensiveErrorReports) return;
45
46 // open vmguestlib and bind SDK functions
47 char ebuf[1024];
48 dlHandle = os::dll_load("vmGuestLib", ebuf, sizeof ebuf);
49
50 #ifdef LINUX
51 if (dlHandle == NULL) {
52 // the open-vm-tools have a different guest lib name
53 // on some distros e.g. SLES12 the open-vm-tools are the default,
54 // so use the different libname as a fallback
55 dlHandle = os::dll_load("/usr/lib64/libguestlib.so.0", ebuf, sizeof ebuf);
56 }
57 #endif
58 if (dlHandle == NULL) {
59 return;
60 }
61
62 GuestLib_StatGet = CAST_TO_FN_PTR(GuestLib_StatGet_t, os::dll_lookup(dlHandle, "VMGuestLib_StatGet"));
63 GuestLib_StatFree = CAST_TO_FN_PTR(GuestLib_StatFree_t, os::dll_lookup(dlHandle, "VMGuestLib_StatFree"));
64
65 if (GuestLib_StatGet != NULL && GuestLib_StatFree != NULL) {
66 char* result_info = NULL;
67 size_t result_size = 0;
68 VMGuestLibError sg_error = GuestLib_StatGet("text", "resources", &result_info, &result_size);
69 if (sg_error == VMGUESTLIB_ERROR_SUCCESS) {
70 has_resource_information = true;
71 os::snprintf(extended_resource_info_at_startup, sizeof(extended_resource_info_at_startup), "%s", result_info);
72 GuestLib_StatFree(result_info, result_size);
73 }
74 sg_error = GuestLib_StatGet("text", "host", &result_info, &result_size);
75 if (sg_error == VMGUESTLIB_ERROR_SUCCESS) {
76 has_host_information = true;
77 os::snprintf(host_information, sizeof(host_information), "%s", result_info);
78 GuestLib_StatFree(result_info, result_size);
79 }
80 }
81 }
82
print_virtualization_info(outputStream * st)83 void VirtualizationSupport::print_virtualization_info(outputStream* st) {
84 if (has_host_information) {
85 st->print_cr("vSphere host information:");
86 st->print_cr("%s", host_information);
87 }
88 // resource info at startup
89 if (has_resource_information) {
90 st->print_cr("vSphere resource information collected at VM startup:");
91 st->print_cr("%s", extended_resource_info_at_startup);
92 }
93 // current resource info
94 if (GuestLib_StatGet != NULL && GuestLib_StatFree != NULL) {
95 char* result_info = NULL;
96 size_t result_size = 0;
97 VMGuestLibError sg_error = GuestLib_StatGet("text", "resources", &result_info, &result_size);
98 if (sg_error == VMGUESTLIB_ERROR_SUCCESS) {
99 st->print_cr("vSphere resource information available now:");
100 st->print_cr("%s", result_info);
101 GuestLib_StatFree(result_info, result_size);
102 }
103 }
104 }
105