selinux labelling of static codec builds

[Antoine Martin]

On some distros (ie: CentOS 5.x), the static codec builds will not load without:

chcon -t texrel_shlib_t lib.so /path/to/codec.so

Otherwise we get a:

cannot restore segment prot after reloc

We should be able to do this as an rpm post installation scriptlet I think.

[Antoine Martin]

fixed in r2902 - seems to work on CentOS 5.9

[Antoine Martin]

As per ​SELinux Reveals Bugs in other code: chcon won't survive a relabel!

We also need:

semanage fcontext -a -t texrel_shlib_t /path/to/codec.so

Note: texrel_shlib_t is an alias for textrel_shlib_t, I believe it is safer to use the former with older distros like centos5.

[Antoine Martin]

Applied semanage change in r7008, also needed to use textrel_shlib_t (r7009: with a t) for compatibility with newer policies, and added dependency on policycoreutils-python (policycoreutils for centos5 in r7010). Backport for all of this in r7011.

Tested with beta packages, the library label survived a system relabel.

This will be a non-issue with #613 as we will no longer use static modules.

Closing, feel free to re-open if I've missed something.

[Antoine Martin]

Note: the ticket for the xpra selinux policy is #815.