On 03/13/2018 02:45 PM, Ed Greshko wrote:
A while back I needed virtmanager to access an ISO file which resides
on an NFS
mount. So, I enabled virt_use_nfs.
Today I was doing some research to help someone else and I noticed that "semanage
boolean -l" shows.
virt_use_nfs (on , on) Allow virt to use nfs
According to the header of the output the first "on" is the state while the
second is
default. Since I had to enable it I would have thought I would see
virt_use_nfs (on , off) Allow virt to use nfs
Am I missing something?
Hi Ed,
It's because "semanage boolean -m " will modify actual state and also
default value which is important for reboot.
Next tool for changing values of boolean is "setsebool" if you use:
# setsebool virt_use_nfs=1 ; this will turn on mentioned boolean but it
will be off after reboot.
# setsebool -P virt_use_nfs=1 ; will turn on mentioned boolean and it
will be persistent, it stay on after reboot.
So:
If you use: semanage boolean -m --on virt_use_nfs is same as setsebool
-P virt_use_nfs=1 and result will be:
virt_use_nfs (on , on) Allow virt to use nfs
If you use setsebool virt_use_nfs=1 result will be:
virt_use_nfs (on , off) Allow virt to use nfs
I hope it's clear now.
Lukas.
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--
Lukas Vrabec
Software Engineer, Security Technologies
Red Hat, Inc.