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https://issues.apache.org/jira/browse/DERBY-5363?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13085945#comment-13085945
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Dag H. Wanvik commented on DERBY-5363:
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Thanks for finding this , Kristian. I would think we could set the Java 6
compile classpath using Java 7. I'll add that unless somebody has misgivings.
If we omit this extension of the property setter for this issue (as seems
likely), I'll make a new issue and attach the preliminary patch of the Java 7
enabling to that so we can save it for later.
> Tighten default permissions of DB files with >= JDK6
> ----------------------------------------------------
>
> Key: DERBY-5363
> URL: https://issues.apache.org/jira/browse/DERBY-5363
> Project: Derby
> Issue Type: Improvement
> Reporter: Dag H. Wanvik
> Attachments: permission-5.diff, permission-5.stat, permission-6.diff,
> permission-6.stat, z.sql
>
>
> Before Java 6, files created by Derby would have the default
> permissions of the operating system context. Under Unix, this would
> depend on the effective umask of the process that started the Java VM.
> In Java 6 and 7, there are methods available that allows tightening up this
> (File.setReadable, setWritable), making it less likely that somebody
> would accidentally run Derby with a too lenient default.
> I suggest we take advantage of this, and let Derby by default (in Java
> 6 and higher) limit the visibility to the OS user that starts the VM,
> e.g. on Unix this would be equivalent to running with umask 0077. More
> secure by default is good, I think.
> We could have a flag, e.g. "derby.storage.useDefaultFilePermissions"
> that when set to true, would give the old behavior.
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