[pve-devel] [PATCH proxmox-firewall 1/1] service: flush firewall rules on force disable

[Stefan Hanreich]

superseded by:
https://lists.proxmox.com/pipermail/pve-devel/2024-July/064439.html

On 5/29/24 15:25, Stefan Hanreich wrote:
> When disabling the nftables firewall again, there is a race condition
> where the nftables ruleset never gets flushed and persists after
> disabling. In practice this almost never happens due to pve-firewall
> running every 10 seconds, and proxmox-firewall running every 5
> seconds, so the proxmox-firewall main loop almost always runs at least
> once before the force disable file gets created and flushes the
> ruleset.
> 
> Reported-by: Hannes Laimer <h.laimer at proxmox.com>
> Signed-off-by: Stefan Hanreich <s.hanreich at proxmox.com>
> ---
>  proxmox-firewall/src/bin/proxmox-firewall.rs | 4 ++++
>  1 file changed, 4 insertions(+)
> 
> diff --git a/proxmox-firewall/src/bin/proxmox-firewall.rs b/proxmox-firewall/src/bin/proxmox-firewall.rs
> index f7e816e..5133cbf 100644
> --- a/proxmox-firewall/src/bin/proxmox-firewall.rs
> +++ b/proxmox-firewall/src/bin/proxmox-firewall.rs
> @@ -91,6 +91,10 @@ fn main() -> Result<(), std::io::Error> {
>  
>      while !term.load(Ordering::Relaxed) {
>          if force_disable_flag.exists() {
> +            if let Err(error) = remove_firewall() {
> +                log::error!("unable to disable firewall: {error:#}");
> +            }
> +
>              std::thread::sleep(Duration::from_secs(5));
>              continue;
>          }