priority between file context rules

[Vidalie Hervé]

Hello,

I am trying to label httpd files on a server running multiple instances of httpd.

        /WEBS/client_name/service_name/ contains configuration files, documents to serve, …
        /WEBLOGS/client_name/service_name/ contains httpd logs
        /WEBDATA/client_name/service_name/ contains datas

This is my goal:
        /WEBS/ httpd_sys_content_t
        /WEBS/lost\+found(/.*)? lost_found_t
        /WEBS/client_name/ httpd_sys_content_t
        /WEBS/client_name/service_name/ httpd_sys_content_t

        /WEBS/client_name/service_name/bin/ and his content httpd_sys_content_t
        /WEBS/client_name/service_name/conf/ and his content httpd_sys_content_t httpd_config_t
        /WEBS/client_name/service_name/docs/ and his content httpd_sys_content_t
        /WEBS/client_name/service_name/init/ and his content httpd_sys_content_t
        /WEBS/client_name/service_name/logs/ ->/WEBLOGS /client_name/service_name/  httpd_log_t (might be wrong)
        / WEBLOGS /client_name/service_name/readme/ and his content httpd_sys_content_t

        /WEBDATA / httpd_sys_content_t
        /WEBDATA /lost\+found(/.*)? lost_found_t
        /WEBDATA /client_name/ httpd_sys_content_t
        /WEBDATA /client_name/service_name/ and his content httpd_sys_rw_content_t

        /WEBLOGS / httpd_sys_content_t
        /WEBLOGS /lost\+found(/.*)? lost_found_t
        /WEBLOGS /client_name/ httpd_sys_content_t
        /WEBLOGS /client_name/service_name/ httpd_sys_content_t
        /WEBLOGS /client_name/service_name/* httpd_log_t

Would this labeling be correct?

I already tried to do run the following commands :
        semanage fcontext -a -t httpd_sys_content_t '/WEBS(/.*)'
        semanage fcontext -a -t httpd_sys_content_t '/WEBDATA(/.*)'
        semanage fcontext -a -t httpd_log_t '/WEBLOGS(/.*)'
        semanage fcontext -a -t lost_found_t '/WEBS/lost\+found(/.*)?'
        semanage fcontext -a -t lost_found_t '/WEBLOGS/lost\+found(/.*)?'
        semanage fcontext -a -t lost_found_t '/WEBDATA/lost\+found(/.*)?'
        semanage fcontext -a -t httpd_config_t '/WEBS/[^/]+/[^/]+/conf(/.*)?'
        semanage fcontext -a -t httpd_log_t '/WEBS/[^/]+/[^/]+/logs'
        restorecon -Rv /WEB*

Encountered problems :
        Already discussed : httpd_log_t is not enough to httpd to create new log files -> to be replaced with  httpd_sys_rw_content_t
        New files (for example logs) are not correctly labeled (they are labeled like the folder)


I would like to create a policy package file to define add this file context mappings. How to add mapping rules and rules for automatically labeling created files?

Another question:
Where can I find the source of the policy I use ? (selinux-policy-targeted-3.7.19-195.el6_4.18.noarch)

Regards,

Hervé Vidalie

-----Message d'origine-----
De : Daniel J Walsh [mailto:dwalsh at redhat.com]
Envoyé : mercredi 20 novembre 2013 20:39
À : Vidalie Hervé; Bruno Wolff III
Cc : selinux at lists.fedoraproject.org
Objet : Re: priority between file context rules


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On 11/20/2013 04:34 AM, Vidalie Hervé wrote:
> Thank you for your clarification.
>
> How to modify current policy to add default context to some paths
> without using semanage fcontext -a? Where can I find sources of the policy I use?
> (I am using selinux-policy-targeted-3.7.19-195.el6_4.18.noarch)
>
> Regards,
>
> Hervé

There are two ways of adding file context mappings, either add them to a policy package (pp) file and install them, or use semanage fcontext.

If you use a policy package the labeling will work with the existing labeling, while semanage fcontext -a will take precedence.

semanage fcontext -a -e /var/www /WWW

Might also be usefull for saying labels under one directory should be like labels under a different directory.

What labeling are you trying to setup?

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