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Have setup a special logging directory for MySQL logs. This required me to run the command

grep mysqld /var/log/audit/audit.log | audit2allow -M mypol

a number of times to authorize MySQL to search, open, write etc in the MySQL log directory.

The final result was a mypol.te file that looks like this:

module mypol 1.0;

require {
    type mysqld_log_t;
    type mysqld_t;
    class dir { write search read remove_name open add_name };
}

#============= mysqld_t ==============
allow mysqld_t mysqld_log_t:dir open;
#!!!! This avc is allowed in the current policy

allow mysqld_t mysqld_log_t:dir { write remove_name search read add_name };

However I want to use the semanage command in a script to do this automatically in future builds.

Wondering how I can convert the above mypol.te into a set of semanage commands?

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What is your reason to use semanage for this instead of compiling and loading the resulting se-module? –  Nils Nov 9 '12 at 15:41
    
My bash script installs MySQL, creates the logging directory, creates MySQL users, sets permissions, and does some basic SELinux permissions that I have been able to work out, as well as other sundry tasks. It will be much more efficient if I can do everything in the one script rather than doing some things in a script and then have to copy a policy file to the server as well. –  Eureka Ikara Nov 10 '12 at 2:30
    
continuing from last comment: From the Fedora SELinux documentation I have been able to work out certain commands that I have needed to do such as: code semanage fcontext -a -t mysqld_log_t '/var/log/mysql(/.*)?' code If there is a way to add permissions for searching etc, everything will be in a single script. –  Eureka Ikara Nov 10 '12 at 2:40
    
I still do not understand. I hope you do these installation tasks by building a RPM. So it would not be a big problem to put into that RPM a policy file and install that via post-install-script (the same post install will install your users, while creating directories and settings permissions is a typical rpm-installation-task...). Apart from I do not think that there is a general solution for your problem, since - according to the man-page - semanage handles only a subset of what policies can do. –  Nils Nov 11 '12 at 20:56
    
Your suggestion to package everything up in an RPM is interesting. I have always found RPM how to documentation very poor as it makes so many assumptions. Any references for how I would turn my pot pourri of bash scripts into RPMs would be useful. –  Eureka Ikara Nov 13 '12 at 22:33

1 Answer 1

up vote 1 down vote accepted

Ok - this is not right on target, but you may achieve your goal by building a RPM. Since you can write shell-scripts, you will not have a problem with RPMs.

Your target is to install mySQL and do some post-installation tasks like addings users, and adding a SELinux-policy.

I will try to outline a generic receipe. You can find a better overview about building rpms here.

  1. Grab your flavour of mySQL from the mirror of mysql-sources - go for the src.rpm version, download it.
  2. install that src.rpm - this will give you a SPEC-file to start with (and it will install the sources for mySQL as well - ready for compilation)
  3. Include your SEPolicy-file into the source-section
  4. In the %configure Section you can set your specific configure-options - like you would do on a
  5. Modify the %build section so that "your" directories get created there, also compile your SEPolicy at that point
  6. Install the needed users/groups in the %post-section - do not forget the case where these may already be installed - in the %post-section do the activation of the compiled SELinux-policy
  7. Include the built Module in the %install - section, as well as "your" special directories

Once you have made your first RPM - the next ones will be easy. But perhaps you should make this a question of its own. I did not find a good one on UL.

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Thank you. I will give RPM a try. The Tom Callaway slides give me new hope. –  Eureka Ikara Nov 15 '12 at 0:16

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