[gobolinux-devel] Handle unmanaged files in FiboSandbox (and cleaner for UnionSandbox)

[Jonas Karlsson]

Here's a proposed change to fix the handling of unmanaged files a bit  
cleaner at the same time as it adds support for unmanaged files to  
FiboSandbox. In short what it does:
It adds support for mapped mounts to FiboSandbox. This is implemented so  
that for every system directory in the mapped mounts option will have a  
corresponding directory in Resources/Unmanaged in the ${target} directory,  
which will be bind mounted over the system directory redirecting all  
writes into the system directory to the directory in Resources/Unmanaged.  
Easy, huh? :)
An example:
/System/Kernel/Modules/$(uname -r)/misc/ndiswrapper.ko is in the unmanaged  
file array. Then  
${target}/Resources/Unmanaged/System/Kernel/Modules/$(uname -r)/misc will  
be bind mounted over /System/Kernel/Modules/$(uname -r)/misc, so when the  
installer tries to copy the file to /System/Kernel/Modules/$(uname  
-r)/misc it will be redirected, through the mount, to  
${target}/Resources/Unmanaged/System/Kernel/Modules/$(uname -r)/misc

Union sandbox already had mapped mounts.

Then I made Compile parse the unmanaged_files array and pass it to  
SandboxInstall that made it to mapped mounts, which both FiboSandbox and  
UnionSandbox now supports.

-- 
/Jonas

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