SELinux policy configuration
c9e40e083e
This was previously needed because on RPM-OSTree systems, user homes were located in `/var/home` while the default home specified in `etc/default/useradd` was still `/home`. This meant that `genhomedircon` (which parses `/etc/default/useradd` to find the homedir) rendered the `HOME_DIR` template rules as `/home` into `file_contexts.homedirs`. So then, we needed this equivalency rule so that `/var/home/...` was equivalent to the generated `/home/...` rules. Now however, RPM-OSTree correctly fixes `/etc/default/useradd` to point to `/var/home` [1]. This now means that `file_contexts.homedirs` does correctly hold `/var/home/...` rules. Thus we no longer need this equivalency rule. In fact, it now actively prevents proper labeling of the home dirs since `/home/...` is now considered `default_t` [2]. If anything, we'd want the *inverse* rule of `/home --> `/var/home`, but only on RPM-OSTree systems, which I'm not sure how easy it'd be to do here. In practice, since SELinux uses the resolved path before matching a rule, all paths under `/home/...` will end up as `/var/home/...`. IOW, the hack we added to make `/var/home` labeled like `/home` on RPM-OSTree systems is no longer needed now that RPM-OSTree correctly sets `HOME`, which SELinux picks up on. As for root's home, it's part of the main context list and isn't templated, so it's always `/root`, and so we do still need the equivalency rule there. [1] https://github.com/projectatomic/rpm-ostree/pull/1726 [2] https://bugzilla.redhat.com/show_bug.cgi?id=1669982 |
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|---|---|---|
| tests | ||
| .gitignore | ||
| booleans-minimum.conf | ||
| booleans-mls.conf | ||
| booleans-targeted.conf | ||
| booleans.subs_dist | ||
| COPYING | ||
| customizable_types | ||
| file_contexts.subs_dist | ||
| macro-expander | ||
| make-rhat-patches.sh | ||
| Makefile | ||
| Makefile.devel | ||
| modules-minimum.conf | ||
| modules-mls-base.conf | ||
| modules-mls-contrib.conf | ||
| modules-targeted-base.conf | ||
| modules-targeted-contrib.conf | ||
| modules-targeted.conf | ||
| permissivedomains.cil | ||
| README | ||
| rpm.macros | ||
| securetty_types-minimum | ||
| securetty_types-mls | ||
| securetty_types-targeted | ||
| selinux-factory-reset | ||
| selinux-factory-reset@.service | ||
| selinux-policy.conf | ||
| selinux-policy.spec | ||
| setrans-minimum.conf | ||
| setrans-mls.conf | ||
| setrans-targeted.conf | ||
| seusers | ||
| sources | ||
| users-minimum | ||
| users-mls | ||
| users-targeted | ||
## Purpose
SELinux Fedora Policy is a large patch off the mainline. The [fedora-selinux/selinux-policy](https://github.com/selinux-policy/selinux-policy.git) makes Fedora Policy packaging more simple and transparent for developers, upstream developers and users. It is used for applying downstream Fedora fixes, for communication about proposed/committed changes, for communication with upstream and the community. It reflects upstream repository structure to make submitting patches to upstream easy.
## Structure
### github
On GitHub, we have two repositories (selinux-policy and selinux-policy-contrib ) for dist-git repository.
$ cd selinux-policy
$ git remote -v
origin git@github.com:fedora-selinux/selinux-policy.git (fetch)
$ git branch -r
origin/HEAD -> origin/master
origin/f27
origin/f28
origin/master
origin/rawhide
$ cd selinux-policy-contrib
$ git remote -v
origin git@github.com:fedora-selinux/selinux-policy-contrib.git (fetch)
$ git branch -r
origin/HEAD -> origin/master
origin/f27
origin/f28
origin/master
origin/rawhide
Note: _master_ branch on GitHub does not reflect master branch in dist-git. For this purpose, we created the _rawhide github branches in both selinux-policy and selinux-policy-contrib repositories.
### dist-git
Package sources in dist-git are generally composed from a _selinux-policy and _selinux-policy-contrib repository snapshots tarballs and from other config files.
## Build process
1. clone [fedora-selinux/selinux-policy](https://github.com/fedora-selinux/selinux-policy) repository
$ cd ~/devel/github
$ git clone git@github.com:fedora-selinux/selinux-policy.git
$ cd selinux-policy
2. clone [fedora-selinux/selinux-policy-contrib](https://github.com/fedora-selinux/selinux-policy-contrib) repository
$ cd ~/devel/github
$ git clone git@github.com:fedora-selinux/selinux-policy-contrib.git
$ cd selinux-policy-contrib
3. create, backport, cherry-pick needed changes to a particular branch and push them
4. clone **selinux-policy** dist-git repository
$ cd ~/devel/dist-git
$ fedpkg clone selinux-policy
$ cd selinux-policy
4. Download the latest snaphots from selinux-policy and selinux-policy-contrib github repositories
$ ./make-rhat-patches.sh
5. add changes to the dist-git repository, bump release, create a changelog entry, commit and push
6. build the package
$ fedpkg build