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8275703: System.loadLibrary fails on Big Sur for libraries hidden from filesystem

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Reviewed-by: dholmes, alanb, mcimadamore
This commit is contained in:
Mandy Chung 2021-10-28 15:27:26 +00:00
parent abe52aea23
commit 309acbf0e8
10 changed files with 199 additions and 32 deletions
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29
src/java.base/share/classes/jdk/internal/loader/NativeLibraries.java
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@ -36,7 +36,6 @@ import java.util.ArrayDeque;
import java.util.Deque;
import java.util.function.BiFunction;
import java.util.function.Function;
import java.util.HashSet;
import java.util.Objects;
import java.util.Map;
import java.util.Set;
@ -56,7 +55,7 @@ import java.util.concurrent.locks.ReentrantLock;
* will fail.
*/
public final class NativeLibraries {
private static final boolean loadLibraryOnlyIfPresent = ClassLoaderHelper.loadLibraryOnlyIfPresent();
private final Map<String, NativeLibraryImpl> libraries = new ConcurrentHashMap<>();
private final ClassLoader loader;
// caller, if non-null, is the fromClass parameter for NativeLibraries::loadLibrary
@ -145,7 +144,8 @@ public final class NativeLibraries {
}
/*
* Load a native library from the given file. Returns null if file does not exist.
* Load a native library from the given file. Returns null if the given
* library is determined to be non-loadable, which is system-dependent.
*
* @param fromClass the caller class calling System::loadLibrary
* @param file the path of the native library
@ -158,14 +158,17 @@ public final class NativeLibraries {
boolean isBuiltin = (name != null);
if (!isBuiltin) {
name = AccessController.doPrivileged(new PrivilegedAction<>() {
public String run() {
try {
return file.exists() ? file.getCanonicalPath() : null;
} catch (IOException e) {
return null;
public String run() {
try {
if (loadLibraryOnlyIfPresent && !file.exists()) {
return null;
}
return file.getCanonicalPath();
} catch (IOException e) {
return null;
}
}
}
});
});
if (name == null) {
return null;
}
@ -389,7 +392,7 @@ public final class NativeLibraries {
throw new InternalError("Native library " + name + " has been loaded");
}
return load(this, name, isBuiltin, isJNI);
return load(this, name, isBuiltin, isJNI, loadLibraryOnlyIfPresent);
}
}
@ -575,7 +578,9 @@ public final class NativeLibraries {
// JNI FindClass expects the caller class if invoked from JNI_OnLoad
// and JNI_OnUnload is NativeLibrary class
private static native boolean load(NativeLibraryImpl impl, String name, boolean isBuiltin, boolean isJNI);
private static native boolean load(NativeLibraryImpl impl, String name,
boolean isBuiltin, boolean isJNI,
boolean throwExceptionIfFail);
private static native void unload(String name, boolean isBuiltin, boolean isJNI, long handle);
private static native String findBuiltinLib(String name);
private static native long findEntry0(NativeLibraryImpl lib, String name);