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8156709: Cannot call setSeed on NativePRNG on Mac if EGD is /dev/urandom

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Reviewed-by: wetmore
This commit is contained in:
Weijun Wang 2016-05-11 08:39:36 +08:00
parent fcf085c678
commit 772322c6fa
2 changed files with 39 additions and 1 deletions
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3
jdk/src/java.base/unix/classes/sun/security/provider/NativePRNG.java
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@ -469,7 +469,8 @@ public final class NativePRNG extends SecureRandomSpi {
try {
seedOut.write(seed);
} catch (IOException e) {
throw new ProviderException("setSeed() failed", e);
// Ignored. On Mac OS X, /dev/urandom can be opened
// for write, but actual write is not permitted.
}
}
getMixRandom().engineSetSeed(seed);

37
jdk/test/java/security/SecureRandom/MacNativePRNGSetSeed.java Normal file
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@ -0,0 +1,37 @@
/*
* Copyright (c) 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.
*/
import java.security.SecureRandom;
/* @test
* @bug 8156709
* @summary Cannot call setSeed on NativePRNG on Mac if EGD is /dev/urandom
* @requires os.name == "Mac OS X"
* @run main/othervm -Djava.security.egd=file:/dev/urandom MacNativePRNGSetSeed
*/
public class MacNativePRNGSetSeed {
public static void main(String[] args) throws Exception {
SecureRandom sr = SecureRandom.getInstance("NativePRNG");
sr.setSeed(1);
}
}