Re: One question about security label command

From: Adam Brightwell <adam(dot)brightwell(at)crunchydatasolutions(dot)com>
To: Kohei KaiGai <kaigai(at)kaigai(dot)gr(dot)jp>
Cc: Alvaro Herrera <alvherre(at)2ndquadrant(dot)com>, Kouhei Kaigai <kaigai(at)ak(dot)jp(dot)nec(dot)com>, Stephen Frost <sfrost(at)snowman(dot)net>, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Robert Haas <robertmhaas(at)gmail(dot)com>, 张元超 <zhangyuanchao(at)highgo(dot)com>, "pgsql-hackers(at)postgresql(dot)org" <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: One question about security label command
Date: 2015-08-25 19:50:28
Message-ID: CAKRt6CSsKV-Mv-ADATjJ=+MaSoMR_dJSb7woUi0T2RZkWF6dpA@mail.gmail.com
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All,

> The second approach above works.
> I defined a own privileged domain (sepgsql_regtest_superuser_t)
> instead of system's unconfined_t domain.
> The reason why regression test gets failed was, definition of
> unconfined_t in the system default policy was changed to bypass
> multi-category rules; which our regression test depends on.
> So, the new sepgsql_regtest_superuser_t domain performs almost
> like as unconfined_t, but restricted by multi-category policy as
> traditional unconfined_t did.
> It is self defined domain, so will not affected by system policy
> change.
> Even though the sepgsql-regtest.te still uses unconfined_u and
> unconfined_r pair for selinux-user and role, it requires users to
> define additional selinux-user by hand if we try to define own one.
> In addition, its definition has not been changed for several years.
> So, I thought it has less risk to rely on unconfined_u/unconfined_r
> field unlike unconfined_t domain.

I have reviewed and tested this patch against 'master' at 781ed2b.
The patch applies without issue and all tests pass on EL7.

-Adam

--
Adam Brightwell - adam(dot)brightwell(at)crunchydatasolutions(dot)com
Database Engineer - www.crunchydatasolutions.com

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