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sulong: Support for rpath library locating
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114
....oracle.truffle.llvm.parser/src/com/oracle/truffle/llvm/parser/elf/ElfLibraryLocator.java
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| /* | ||
| * Copyright (c) 2019, Oracle and/or its affiliates. | ||
| * | ||
| * All rights reserved. | ||
| * | ||
| * Redistribution and use in source and binary forms, with or without modification, are | ||
| * permitted provided that the following conditions are met: | ||
| * | ||
| * 1. Redistributions of source code must retain the above copyright notice, this list of | ||
| * conditions and the following disclaimer. | ||
| * | ||
| * 2. Redistributions in binary form must reproduce the above copyright notice, this list of | ||
| * conditions and the following disclaimer in the documentation and/or other materials provided | ||
| * with the distribution. | ||
| * | ||
| * 3. Neither the name of the copyright holder nor the names of its contributors may be used to | ||
| * endorse or promote products derived from this software without specific prior written | ||
| * permission. | ||
| * | ||
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS | ||
| * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF | ||
| * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE | ||
| * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, | ||
| * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE | ||
| * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED | ||
| * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING | ||
| * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED | ||
| * OF THE POSSIBILITY OF SUCH DAMAGE. | ||
| */ | ||
| package com.oracle.truffle.llvm.parser.elf; | ||
|
|
||
| import java.nio.file.Path; | ||
| import java.nio.file.Paths; | ||
| import java.util.List; | ||
| import java.util.regex.Pattern; | ||
| import java.util.stream.Collectors; | ||
|
|
||
| import com.oracle.truffle.api.source.Source; | ||
| import com.oracle.truffle.llvm.parser.binary.BinaryParser; | ||
| import com.oracle.truffle.llvm.runtime.DefaultLibraryLocator; | ||
| import com.oracle.truffle.llvm.runtime.LLVMContext; | ||
| import com.oracle.truffle.llvm.runtime.LibraryLocator; | ||
|
|
||
| /** | ||
| * Locates libraries from {@link ElfFile ELF files}. | ||
| */ | ||
| public final class ElfLibraryLocator extends LibraryLocator { | ||
| /** Extra library paths local to the module. */ | ||
| private final List<String> localPaths; | ||
|
|
||
| private static final Pattern RPATH_PATTERN = Pattern.compile("\\$(ORIGIN|\\{ORIGIN\\})"); | ||
|
|
||
| private static class Replacer { | ||
| private final Source source; | ||
| private String origin; | ||
|
|
||
| Replacer(Source source) { | ||
| this.source = source; | ||
| } | ||
|
|
||
| /** | ||
| * Replaces special rpath tokens. Currently, only {@code $ORIGIN} is supported and will be | ||
| * replace by the directory containing executable or shared object. | ||
| */ | ||
| public String replace(String e) { | ||
| if (origin == null) { | ||
| origin = BinaryParser.getOrigin(source); | ||
| } | ||
| if (origin == null) { | ||
| return e; | ||
| } | ||
| return RPATH_PATTERN.matcher(e).replaceAll(origin); | ||
| } | ||
| } | ||
|
|
||
| public ElfLibraryLocator(ElfFile elfFile, Source source) { | ||
| List<String> elfPaths = null; | ||
| ElfDynamicSection dynamicSection = elfFile.getDynamicSection(); | ||
| if (dynamicSection != null) { | ||
| elfPaths = dynamicSection.getDTRunPathStream().map(new Replacer(source)::replace).collect(Collectors.toList()); | ||
| if (elfPaths.isEmpty()) { | ||
| elfPaths = dynamicSection.getDTRPath(); | ||
| } | ||
| } | ||
| this.localPaths = elfPaths; | ||
| } | ||
|
|
||
| @Override | ||
| public Path locateLibrary(LLVMContext context, String lib, Object reason) { | ||
| Path libPath = Paths.get(lib); | ||
| if (libPath.isAbsolute()) { | ||
| return DefaultLibraryLocator.locateAbsolute(context, lib, libPath); | ||
| } | ||
| Path path = DefaultLibraryLocator.locateGlobal(context, lib); | ||
| if (path != null) { | ||
| return path; | ||
| } | ||
|
|
||
| if (localPaths != null) { | ||
| // search file local paths | ||
| context.traceLoaderSearchPath(localPaths, reason); | ||
| for (String p : localPaths) { | ||
| Path absPath = Paths.get(p, lib); | ||
| context.traceLoaderTry(absPath); | ||
| if (absPath.toFile().exists()) { | ||
| return absPath; | ||
| } | ||
| } | ||
| } | ||
|
|
||
| context.traceLoaderTry(libPath); | ||
| return libPath; | ||
| } | ||
| } |
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