| /* |
| * Copyright (c) 2014, 2016, 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 "logging/log.hpp" |
| #include "memory/allocation.inline.hpp" |
| #include "memory/metaspaceShared.hpp" |
| #include "runtime/arguments.hpp" |
| #include "utilities/ostream.hpp" |
| |
| void SharedPathsMiscInfo::add_path(const char* path, int type) { |
| log_info(classpath)("type=%s ", type_name(type)); |
| ClassLoader::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; |
| } |
| |
| void SharedPathsMiscInfo::print_path(int type, const char* path) { |
| ResourceMark rm; |
| outputStream* out = LogHandle(classpath)::info_stream(); |
| switch (type) { |
| case BOOT: |
| out->print("Expecting BOOT path=%s", path); |
| break; |
| case NON_EXIST: |
| out->print("Expecting that %s does not exist", path); |
| break; |
| case REQUIRED: |
| out->print("Expecting that file %s must exist and is not altered", path); |
| break; |
| default: |
| ShouldNotReachHere(); |
| } |
| } |
| |
| 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"); |
| } |
| log_info(classpath)("type=%s ", type_name(type)); |
| print_path(type, path); |
| if (!check(type, path)) { |
| if (!PrintSharedArchiveAndExit) { |
| return false; |
| } |
| } else { |
| ClassLoader::trace_class_path("ok"); |
| } |
| } |
| |
| return true; |
| } |
| |
| bool SharedPathsMiscInfo::check(jint type, const char* path) { |
| switch (type) { |
| case BOOT: |
| if (os::file_name_strcmp(path, Arguments::get_sysclasspath()) != 0) { |
| return fail("[BOOT classpath mismatch, actual =", 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; |
| } |