--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/hotspot/src/share/vm/classfile/sharedPathsMiscInfo.cpp Tue Aug 12 17:29:00 2014 -0700
@@ -0,0 +1,154 @@
+/*
+ * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ *
+ */
+
+#include "precompiled.hpp"
+#include "classfile/classLoader.hpp"
+#include "classfile/classLoaderData.inline.hpp"
+#include "classfile/sharedPathsMiscInfo.hpp"
+#include "memory/allocation.inline.hpp"
+#include "memory/metaspaceShared.hpp"
+#include "runtime/arguments.hpp"
+
+void SharedPathsMiscInfo::add_path(const char* path, int type) {
+ if (TraceClassPaths) {
+ tty->print("[type=%s] ", type_name(type));
+ trace_class_path("[Add misc shared path ", path);
+ }
+ write(path, strlen(path) + 1);
+ write_jint(jint(type));
+}
+
+void SharedPathsMiscInfo::ensure_size(size_t needed_bytes) {
+ assert(_allocated, "cannot modify buffer during validation.");
+ int used = get_used_bytes();
+ int target = used + int(needed_bytes);
+ if (target > _buf_size) {
+ _buf_size = _buf_size * 2 + (int)needed_bytes;
+ _buf_start = REALLOC_C_HEAP_ARRAY(char, _buf_start, _buf_size, mtClass);
+ _cur_ptr = _buf_start + used;
+ _end_ptr = _buf_start + _buf_size;
+ }
+}
+
+void SharedPathsMiscInfo::write(const void* ptr, size_t size) {
+ ensure_size(size);
+ memcpy(_cur_ptr, ptr, size);
+ _cur_ptr += size;
+}
+
+bool SharedPathsMiscInfo::read(void* ptr, size_t size) {
+ if (_cur_ptr + size <= _end_ptr) {
+ memcpy(ptr, _cur_ptr, size);
+ _cur_ptr += size;
+ return true;
+ }
+ return false;
+}
+
+bool SharedPathsMiscInfo::fail(const char* msg, const char* name) {
+ ClassLoader::trace_class_path(msg, name);
+ MetaspaceShared::set_archive_loading_failed();
+ return false;
+}
+
+bool SharedPathsMiscInfo::check() {
+ // The whole buffer must be 0 terminated so that we can use strlen and strcmp
+ // without fear.
+ _end_ptr -= sizeof(jint);
+ if (_cur_ptr >= _end_ptr) {
+ return fail("Truncated archive file header");
+ }
+ if (*_end_ptr != 0) {
+ return fail("Corrupted archive file header");
+ }
+
+ while (_cur_ptr < _end_ptr) {
+ jint type;
+ const char* path = _cur_ptr;
+ _cur_ptr += strlen(path) + 1;
+ if (!read_jint(&type)) {
+ return fail("Corrupted archive file header");
+ }
+ if (TraceClassPaths) {
+ tty->print("[type=%s ", type_name(type));
+ print_path(tty, type, path);
+ tty->print_cr("]");
+ }
+ if (!check(type, path)) {
+ if (!PrintSharedArchiveAndExit) {
+ return false;
+ }
+ } else {
+ trace_class_path("[ok");
+ }
+ }
+
+ return true;
+}
+
+bool SharedPathsMiscInfo::check(jint type, const char* path) {
+ switch (type) {
+ case BOOT:
+ if (strcmp(path, Arguments::get_sysclasspath()) != 0) {
+ return fail("[BOOT classpath mismatch, actual: -Dsun.boot.class.path=", Arguments::get_sysclasspath());
+ }
+ break;
+ case NON_EXIST: // fall-through
+ case REQUIRED:
+ {
+ struct stat st;
+ if (os::stat(path, &st) != 0) {
+ // The file does not actually exist
+ if (type == REQUIRED) {
+ // but we require it to exist -> fail
+ return fail("Required file doesn't exist");
+ }
+ } else {
+ // The file actually exists
+ if (type == NON_EXIST) {
+ // But we want it to not exist -> fail
+ return fail("File must not exist");
+ }
+ time_t timestamp;
+ long filesize;
+
+ if (!read_time(×tamp) || !read_long(&filesize)) {
+ return fail("Corrupted archive file header");
+ }
+ if (timestamp != st.st_mtime) {
+ return fail("Timestamp mismatch");
+ }
+ if (filesize != st.st_size) {
+ return fail("File size mismatch");
+ }
+ }
+ }
+ break;
+
+ default:
+ return fail("Corrupted archive file header");
+ }
+
+ return true;
+}