Re: Security manager problem

[Gary Benson]

Anthony Green wrote:
> On Tue, 2005-12-06 at 16:14 +0000, Gary Benson wrote:
> > I'm having security manager problems, with JamVM at least.
> > Various initialisations happen the first time a permission is
> > checked, including java.security.Security's <clinit> method which
> > reads the provider files $vendor.security and classpath.security.
> > By this time you are most likely running under a security manager,
> > so if that doesn't allow those files to be read then you get
> > SecurityExceptions you weren't expecting.
> 
> It's been a long time since I've read anything about this kind of
> stuff, but my understanding is that you simply wrap things like this
> up in a AccessController.doPrivileged(), since the access control
> context of the bootstrap or system class loader will permit file
> I/O.

That's interesting, as I was just looking at an some code in an
AccessController.doPrivileged() that was doing security checks.
Perhaps JamVM's AccessController.doPrivileged() is not in fact doing
anything.

Cheers,
Gary