author | psandoz |
Fri, 08 Sep 2017 10:46:46 -0700 | |
changeset 48826 | c4d9d1b08e2e |
parent 48191 | d8a62bea95d3 |
child 49480 | d7df2dd501ce |
permissions | -rw-r--r-- |
48138 | 1 |
/* |
2 |
* Copyright (c) 2014, 2017, Oracle and/or its affiliates. All rights reserved. |
|
3 |
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
|
4 |
* |
|
5 |
* This code is free software; you can redistribute it and/or modify it |
|
6 |
* under the terms of the GNU General Public License version 2 only, as |
|
7 |
* published by the Free Software Foundation. |
|
8 |
* |
|
9 |
* This code is distributed in the hope that it will be useful, but WITHOUT |
|
10 |
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
|
11 |
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
|
12 |
* version 2 for more details (a copy is included in the LICENSE file that |
|
13 |
* accompanied this code). |
|
14 |
* |
|
15 |
* You should have received a copy of the GNU General Public License version |
|
16 |
* 2 along with this work; if not, write to the Free Software Foundation, |
|
17 |
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
|
18 |
* |
|
19 |
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
|
20 |
* or visit www.oracle.com if you need additional information or have any |
|
21 |
* questions. |
|
22 |
* |
|
23 |
*/ |
|
24 |
||
25 |
#include "precompiled.hpp" |
|
26 |
#include "classfile/classLoader.hpp" |
|
27 |
#include "classfile/classLoaderExt.hpp" |
|
28 |
#include "classfile/dictionary.hpp" |
|
29 |
#include "classfile/javaClasses.hpp" |
|
30 |
#include "classfile/sharedClassUtil.hpp" |
|
31 |
#include "classfile/stringTable.hpp" |
|
32 |
#include "classfile/symbolTable.hpp" |
|
33 |
#include "classfile/systemDictionary.hpp" |
|
34 |
#include "classfile/systemDictionaryShared.hpp" |
|
35 |
#include "memory/filemap.hpp" |
|
36 |
#include "memory/metadataFactory.hpp" |
|
37 |
#include "memory/resourceArea.hpp" |
|
38 |
#include "oops/instanceKlass.hpp" |
|
39 |
#include "runtime/arguments.hpp" |
|
40 |
#include "runtime/java.hpp" |
|
41 |
#include "runtime/os.hpp" |
|
42 |
||
43 |
class ManifestStream: public ResourceObj { |
|
44 |
private: |
|
45 |
u1* _buffer_start; // Buffer bottom |
|
46 |
u1* _buffer_end; // Buffer top (one past last element) |
|
47 |
u1* _current; // Current buffer position |
|
48 |
||
49 |
public: |
|
50 |
// Constructor |
|
51 |
ManifestStream(u1* buffer, int length) : _buffer_start(buffer), |
|
52 |
_current(buffer) { |
|
53 |
_buffer_end = buffer + length; |
|
54 |
} |
|
55 |
||
56 |
static bool is_attr(u1* attr, const char* name) { |
|
57 |
return strncmp((const char*)attr, name, strlen(name)) == 0; |
|
58 |
} |
|
59 |
||
60 |
static char* copy_attr(u1* value, size_t len) { |
|
61 |
char* buf = NEW_RESOURCE_ARRAY(char, len + 1); |
|
62 |
strncpy(buf, (char*)value, len); |
|
63 |
buf[len] = 0; |
|
64 |
return buf; |
|
65 |
} |
|
66 |
||
67 |
// The return value indicates if the JAR is signed or not |
|
68 |
bool check_is_signed() { |
|
69 |
u1* attr = _current; |
|
70 |
bool isSigned = false; |
|
71 |
while (_current < _buffer_end) { |
|
72 |
if (*_current == '\n') { |
|
73 |
*_current = '\0'; |
|
74 |
u1* value = (u1*)strchr((char*)attr, ':'); |
|
75 |
if (value != NULL) { |
|
76 |
assert(*(value+1) == ' ', "Unrecognized format" ); |
|
77 |
if (strstr((char*)attr, "-Digest") != NULL) { |
|
78 |
isSigned = true; |
|
79 |
break; |
|
80 |
} |
|
81 |
} |
|
82 |
*_current = '\n'; // restore |
|
83 |
attr = _current + 1; |
|
84 |
} |
|
85 |
_current ++; |
|
86 |
} |
|
87 |
return isSigned; |
|
88 |
} |
|
89 |
}; |
|
90 |
||
91 |
void SharedPathsMiscInfoExt::print_path(outputStream* out, int type, const char* path) { |
|
92 |
switch(type) { |
|
93 |
case APP: |
|
94 |
ClassLoader::trace_class_path("Expecting -Djava.class.path=", path); |
|
95 |
break; |
|
96 |
default: |
|
97 |
SharedPathsMiscInfo::print_path(out, type, path); |
|
98 |
} |
|
99 |
} |
|
100 |
||
101 |
bool SharedPathsMiscInfoExt::check(jint type, const char* path) { |
|
102 |
||
103 |
switch (type) { |
|
104 |
case APP: |
|
105 |
{ |
|
106 |
// Prefix is OK: E.g., dump with -cp foo.jar, but run with -cp foo.jar:bar.jar |
|
107 |
size_t len = strlen(path); |
|
108 |
const char *appcp = Arguments::get_appclasspath(); |
|
109 |
assert(appcp != NULL, "NULL app classpath"); |
|
110 |
size_t appcp_len = strlen(appcp); |
|
111 |
if (appcp_len < len) { |
|
112 |
return fail("Run time APP classpath is shorter than the one at dump time: ", appcp); |
|
113 |
} |
|
114 |
ResourceMark rm; |
|
115 |
char* tmp_path; |
|
116 |
if (len == appcp_len) { |
|
117 |
tmp_path = (char*)appcp; |
|
118 |
} else { |
|
119 |
tmp_path = NEW_RESOURCE_ARRAY(char, len + 1); |
|
120 |
strncpy(tmp_path, appcp, len); |
|
121 |
tmp_path[len] = 0; |
|
122 |
} |
|
123 |
if (os::file_name_strcmp(path, tmp_path) != 0) { |
|
124 |
return fail("[APP classpath mismatch, actual: -Djava.class.path=", appcp); |
|
125 |
} |
|
126 |
if (appcp[len] != '\0' && appcp[len] != os::path_separator()[0]) { |
|
127 |
return fail("Dump time APP classpath is not a proper prefix of run time APP classpath: ", appcp); |
|
128 |
} |
|
129 |
} |
|
130 |
break; |
|
131 |
default: |
|
132 |
return SharedPathsMiscInfo::check(type, path); |
|
133 |
} |
|
134 |
||
135 |
return true; |
|
136 |
} |
|
137 |
||
138 |
void SharedClassUtil::update_shared_classpath(ClassPathEntry *cpe, SharedClassPathEntry* e, TRAPS) { |
|
139 |
ClassLoaderData* loader_data = ClassLoaderData::the_null_class_loader_data(); |
|
140 |
SharedClassPathEntryExt* ent = (SharedClassPathEntryExt*)e; |
|
141 |
ResourceMark rm(THREAD); |
|
142 |
jint manifest_size; |
|
143 |
bool isSigned; |
|
48191
d8a62bea95d3
8190809: JVM crashes while generating appcds for classpath with empty directory entry
iklam
parents:
48138
diff
changeset
|
144 |
|
d8a62bea95d3
8190809: JVM crashes while generating appcds for classpath with empty directory entry
iklam
parents:
48138
diff
changeset
|
145 |
if (cpe->is_jar_file()) { |
d8a62bea95d3
8190809: JVM crashes while generating appcds for classpath with empty directory entry
iklam
parents:
48138
diff
changeset
|
146 |
char* manifest = ClassLoaderExt::read_manifest(cpe, &manifest_size, CHECK); |
d8a62bea95d3
8190809: JVM crashes while generating appcds for classpath with empty directory entry
iklam
parents:
48138
diff
changeset
|
147 |
if (manifest != NULL) { |
d8a62bea95d3
8190809: JVM crashes while generating appcds for classpath with empty directory entry
iklam
parents:
48138
diff
changeset
|
148 |
ManifestStream* stream = new ManifestStream((u1*)manifest, |
d8a62bea95d3
8190809: JVM crashes while generating appcds for classpath with empty directory entry
iklam
parents:
48138
diff
changeset
|
149 |
manifest_size); |
d8a62bea95d3
8190809: JVM crashes while generating appcds for classpath with empty directory entry
iklam
parents:
48138
diff
changeset
|
150 |
isSigned = stream->check_is_signed(); |
d8a62bea95d3
8190809: JVM crashes while generating appcds for classpath with empty directory entry
iklam
parents:
48138
diff
changeset
|
151 |
if (isSigned) { |
d8a62bea95d3
8190809: JVM crashes while generating appcds for classpath with empty directory entry
iklam
parents:
48138
diff
changeset
|
152 |
ent->_is_signed = true; |
d8a62bea95d3
8190809: JVM crashes while generating appcds for classpath with empty directory entry
iklam
parents:
48138
diff
changeset
|
153 |
} else { |
d8a62bea95d3
8190809: JVM crashes while generating appcds for classpath with empty directory entry
iklam
parents:
48138
diff
changeset
|
154 |
// Copy the manifest into the shared archive |
d8a62bea95d3
8190809: JVM crashes while generating appcds for classpath with empty directory entry
iklam
parents:
48138
diff
changeset
|
155 |
manifest = ClassLoaderExt::read_raw_manifest(cpe, &manifest_size, CHECK); |
d8a62bea95d3
8190809: JVM crashes while generating appcds for classpath with empty directory entry
iklam
parents:
48138
diff
changeset
|
156 |
Array<u1>* buf = MetadataFactory::new_array<u1>(loader_data, |
d8a62bea95d3
8190809: JVM crashes while generating appcds for classpath with empty directory entry
iklam
parents:
48138
diff
changeset
|
157 |
manifest_size, |
d8a62bea95d3
8190809: JVM crashes while generating appcds for classpath with empty directory entry
iklam
parents:
48138
diff
changeset
|
158 |
THREAD); |
d8a62bea95d3
8190809: JVM crashes while generating appcds for classpath with empty directory entry
iklam
parents:
48138
diff
changeset
|
159 |
char* p = (char*)(buf->data()); |
d8a62bea95d3
8190809: JVM crashes while generating appcds for classpath with empty directory entry
iklam
parents:
48138
diff
changeset
|
160 |
memcpy(p, manifest, manifest_size); |
d8a62bea95d3
8190809: JVM crashes while generating appcds for classpath with empty directory entry
iklam
parents:
48138
diff
changeset
|
161 |
ent->set_manifest(buf); |
d8a62bea95d3
8190809: JVM crashes while generating appcds for classpath with empty directory entry
iklam
parents:
48138
diff
changeset
|
162 |
ent->_is_signed = false; |
d8a62bea95d3
8190809: JVM crashes while generating appcds for classpath with empty directory entry
iklam
parents:
48138
diff
changeset
|
163 |
} |
48138 | 164 |
} |
165 |
} |
|
166 |
} |
|
167 |
||
168 |
void SharedClassUtil::initialize(TRAPS) { |
|
169 |
if (UseSharedSpaces) { |
|
170 |
int size = FileMapInfo::get_number_of_share_classpaths(); |
|
171 |
if (size > 0) { |
|
172 |
SystemDictionaryShared::allocate_shared_data_arrays(size, THREAD); |
|
173 |
if (!DumpSharedSpaces) { |
|
174 |
FileMapHeaderExt* header = (FileMapHeaderExt*)FileMapInfo::current_info()->header(); |
|
175 |
ClassLoaderExt::init_paths_start_index(header->_app_paths_start_index); |
|
176 |
} |
|
177 |
} |
|
178 |
} |
|
179 |
||
180 |
if (DumpSharedSpaces) { |
|
181 |
if (SharedArchiveConfigFile) { |
|
182 |
read_extra_data(SharedArchiveConfigFile, THREAD); |
|
183 |
} |
|
184 |
} |
|
185 |
} |
|
186 |
||
187 |
void SharedClassUtil::read_extra_data(const char* filename, TRAPS) { |
|
188 |
HashtableTextDump reader(filename); |
|
189 |
reader.check_version("VERSION: 1.0"); |
|
190 |
||
191 |
while (reader.remain() > 0) { |
|
192 |
int utf8_length; |
|
193 |
int prefix_type = reader.scan_prefix(&utf8_length); |
|
194 |
ResourceMark rm(THREAD); |
|
195 |
char* utf8_buffer = NEW_RESOURCE_ARRAY(char, utf8_length); |
|
196 |
reader.get_utf8(utf8_buffer, utf8_length); |
|
197 |
||
198 |
if (prefix_type == HashtableTextDump::SymbolPrefix) { |
|
199 |
SymbolTable::new_symbol(utf8_buffer, utf8_length, THREAD); |
|
200 |
} else{ |
|
201 |
assert(prefix_type == HashtableTextDump::StringPrefix, "Sanity"); |
|
202 |
utf8_buffer[utf8_length] = '\0'; |
|
203 |
oop s = StringTable::intern(utf8_buffer, THREAD); |
|
204 |
} |
|
205 |
} |
|
206 |
} |
|
207 |
||
208 |
bool SharedClassUtil::is_classpath_entry_signed(int classpath_index) { |
|
209 |
assert(classpath_index >= 0, "Sanity"); |
|
210 |
SharedClassPathEntryExt* ent = (SharedClassPathEntryExt*) |
|
211 |
FileMapInfo::shared_classpath(classpath_index); |
|
212 |
return ent->_is_signed; |
|
213 |
} |
|
214 |
||
215 |
void FileMapHeaderExt::populate(FileMapInfo* mapinfo, size_t alignment) { |
|
216 |
FileMapInfo::FileMapHeader::populate(mapinfo, alignment); |
|
217 |
||
218 |
ClassLoaderExt::finalize_shared_paths_misc_info(); |
|
219 |
_app_paths_start_index = ClassLoaderExt::app_paths_start_index(); |
|
220 |
||
221 |
_verify_local = BytecodeVerificationLocal; |
|
222 |
_verify_remote = BytecodeVerificationRemote; |
|
223 |
_has_platform_or_app_classes = ClassLoaderExt::has_platform_or_app_classes(); |
|
224 |
} |
|
225 |
||
226 |
bool FileMapHeaderExt::validate() { |
|
227 |
if (UseAppCDS) { |
|
228 |
const char* prop = Arguments::get_property("java.system.class.loader"); |
|
229 |
if (prop != NULL) { |
|
230 |
warning("UseAppCDS is disabled because the java.system.class.loader property is specified (value = \"%s\"). " |
|
231 |
"To enable UseAppCDS, this property must be not be set", prop); |
|
232 |
UseAppCDS = false; |
|
233 |
} |
|
234 |
} |
|
235 |
||
236 |
if (!FileMapInfo::FileMapHeader::validate()) { |
|
237 |
return false; |
|
238 |
} |
|
239 |
||
240 |
// For backwards compatibility, we don't check the verification setting |
|
241 |
// if the archive only contains system classes. |
|
242 |
if (_has_platform_or_app_classes && |
|
243 |
((!_verify_local && BytecodeVerificationLocal) || |
|
244 |
(!_verify_remote && BytecodeVerificationRemote))) { |
|
245 |
FileMapInfo::fail_continue("The shared archive file was created with less restrictive " |
|
246 |
"verification setting than the current setting."); |
|
247 |
return false; |
|
248 |
} |
|
249 |
||
250 |
return true; |
|
251 |
} |