Re: new service blocked by selinux

Hello Rod,

It would be interesting to see both the systemd unit and the complete AVC
message. You can retrieve the latter using:

# ausearch -m avc -ts recent

just after triggering the error.

Another thought: since you are using a script in a specific user's private
bin path, it might be better to use a user specific systemd unit as well.
Otherwise, use a system-wide path for the executable (I'd suggest
/usr/local/bin), and a system-wide unit (as you already do).


On Sun, May 24, 2020 at 3:37 AM Rod Davison <[email protected]> wrote:

> I am running fedora32.  I am trying to start a program as a service and
> run it with a non-root user id (radmin).
>
> I have created /home/radmin/bin/jungledisk.sh (which has permission ug=rwx)
> I have create /etc/systemd/system/jungledisk.service
>
> When I start the service with "sudo systemctl restart jungledisk.service"
> I get error messages -- see below.
>
> I have attempted to follow the instructions to create a local policy from
> the log file by executing:
>
> sudo ausearch -c '(edisk.sh)' --raw | sudo audit2allow -M my-edisksh
> sudo semodule -X 300 -i my-edisksh.pp
>
> however, the behaviour is the same after running this.
>
> The jungledisk.service files is attempting to run jungledisk.sh as user
> radmin, if that's relevant.
>
> Advise appreciated.
>
> the following in my /var/log/messages file:
>
> May 23 17:53:32 localhost systemd[613445]: jungledisk.service: Failed to
> execute command: Permission denied
> May 23 17:53:32 localhost systemd[613445]: jungledisk.service: Failed at
> step EXEC spawning /home/radmin/bin/jungledisk.sh: Permission denied
> ...
> May 23 17:53:34 localhost setroubleshoot[613447]: SELinux is preventing
> (edisk.sh) from execute_no_trans access on the file
> /home/radmin/bin/jungledisk.sh. For complete SELinux messages run: sealert
> -l 0b9955ca-66c6-4039-9999-2dd7d4ec0fc8
> May 23 17:53:34 localhost python3[613447]: SELinux is preventing
> (edisk.sh) from execute_no_trans access on the file
> /home/radmin/bin/jungledisk.sh.#012#012*****  Plugin catchall (100.
> confidence) suggests   **************************#012#012If you believe
> that (edisk.sh) should be allowed execute_no_trans access on the
> jungledisk.sh file by default.#012Then you should report this as a
> bug.#012You can generate a local policy module to allow this
> access.#012Do#012allow this access for now by executing:#012# ausearch -c
> '(edisk.sh)' --raw | audit2allow -M my-edisksh#012# semodule -X 300 -i
> my-edisksh.pp#012
> May 23 17:53:34 localhost dbus-broker-launch[281848]: avc:  received
> policyload notice (seqno=3)
> May 23 17:53:34 localhost dbus-broker-launch[281848]: avc:  received
> policyload notice (seqno=4)
> May 23 17:53:34 localhost systemd[11047]: selinux: avc:  received
> policyload notice (seqno=3)
> May 23 17:53:34 localhost systemd[11047]: selinux: avc:  received
> policyload notice (seqno=4)
> May 23 17:53:34 localhost systemd[11047]: Started
> dbus-:[email protected].
> May 23 17:53:34 localhost at-spi-bus-launcher[294822]: avc:  received
> policyload notice (seqno=3)
> May 23 17:53:34 localhost at-spi-bus-launcher[294822]: avc:  received
> policyload notice (seqno=4)
> May 23 17:53:37 localhost setroubleshoot[613447]: SELinux is preventing
> (edisk.sh) from execute_no_trans access on the file
> /home/radmin/bin/jungledisk.sh. For complete SELinux messages run: sealert
> -l 0b9955ca-66c6-4039-9999-2dd7d4ec0fc8
> May 23 17:53:37 localhost python3[613447]: SELinux is preventing
> (edisk.sh) from execute_no_trans access on the file
> /home/radmin/bin/jungledisk.sh.#012#012*****  Plugin catchall (100.
> confidence) suggests   **************************#012#012If you believe
> that (edisk.sh) should be allowed execute_no_trans access on the
> jungledisk.sh file by default.#012Then you should report this as a
> bug.#012You can generate a local policy module to allow this
> access.#012Do#012allow this access for now by executing:#012# ausearch -c
> '(edisk.sh)' --raw | audit2allow -M my-edisksh#012# semodule -X 300 -i
> my-edisksh.pp#012
>
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