Re: postgresql policy

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Sorry these are in a module I've developed.

Ted

On Thu, May 28, 2015 at 2:28 PM, Stephen Smalley <sds@xxxxxxxxxxxxx> wrote:
> On 05/28/2015 03:10 PM, Ted Toth wrote:
>> Unfortunately it is the latter. Here's an example of what you can do:
>>
>> CREATE TABLE reports (
>>     id integer NOT NULL,
>>     report json,
>>     message_id integer NOT NULL,
>>     location geometry(Point),
>>         security_label text DEFAULT sepostgres_getpeercon()
>> );
>>
>> CREATE POLICY
>>   check_report_insert_selinux ON reports FOR INSERT
>>   WITH CHECK (sepostgres_check_row_perm(reports.security_label,
>> sepostgres_getpeercon(), 'insert'));
>>
>> CREATE POLICY
>>   check_report_delete_selinux ON reports FOR DELETE
>>   USING (sepostgres_check_row_perm(reports.security_label,
>> sepostgres_getpeercon(), 'delete'));
>>
>> CREATE POLICY
>>   check_report_update_selinux ON reports FOR UPDATE
>>   USING (sepostgres_check_row_perm(reports.security_label,
>> sepostgres_getpeercon(), 'update'))
>>   WITH CHECK (sepostgres_check_row_perm(reports.security_label,
>> sepostgres_getpeercon(), 'update'));
>>
>> CREATE POLICY
>>   check_report_select_selinux ON reports FOR SELECT
>>   USING (sepostgres_check_row_perm(sepostgres_getpeercon(),
>> reports.security_label, 'select'));
>>
>> I'm hoping that between DAC, postgresql DAC, selinux policy and RLS
>> policy we can get something that's secure enough for our purposes.
>
> Pardon my ignorance, but are the sepostgres_*() functions something you
> have implemented or something in the existing sepgsl or postgres code?
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