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From "Kathey Marsden (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (DERBY-5363) Tighten default permissions of DB files with >= JDK6
Date Mon, 22 Aug 2011 18:09:29 GMT

    [ https://issues.apache.org/jira/browse/DERBY-5363?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13088870#comment-13088870
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Kathey Marsden commented on DERBY-5363:
---------------------------------------

Thanks Dag.  Your approach sounds good to me.  It might be nice to add some verbosity to the
message to give a clue as to the resolution.  I am assuming this is for 10.9 not 10.8.2.

I have a meeting Thursday with the group that I know needs more than one user to be able to
start network server.  I assume they can use the property, but will report back if they raise
any insurmountable concerns. 

> 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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