Re: [libvirt PATCH 1/8] daemons: Support --timeout 0

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On Wed, Apr 01, 2020 at 08:53:38PM +0200, Andrea Bolognani wrote:
> When using systemd we want to take advantage of socket activation
> instead of keeping daemons running all the time, so we default to
> shutting them down after two minutes of inactivity.
> 
> At the same time, we want it to be possible for the admin to opt
> out of this behavior and disable timeouts entirely. A very natural
> way to do so would be to specify a zero-length timeout, but that's
> currently not accepted by the command line parser. Address that.
> 
> Signed-off-by: Andrea Bolognani <abologna@xxxxxxxxxx>
> ---
>  src/locking/lock_daemon.c  | 6 +++---
>  src/logging/log_daemon.c   | 6 +++---
>  src/remote/remote_daemon.c | 6 +++---
>  3 files changed, 9 insertions(+), 9 deletions(-)
> 
> diff --git a/src/locking/lock_daemon.c b/src/locking/lock_daemon.c
> index 3d33995beb..4eff63014a 100644
> --- a/src/locking/lock_daemon.c
> +++ b/src/locking/lock_daemon.c
> @@ -872,7 +872,7 @@ int main(int argc, char **argv) {
>      int pid_file_fd = -1;
>      char *sock_file = NULL;
>      char *admin_sock_file = NULL;
> -    int timeout = -1;        /* -t: Shutdown timeout */
> +    int timeout = 0;         /* -t: Shutdown timeout */
>      char *state_file = NULL;
>      bool implicit_conf = false;
>      mode_t old_umask;
> @@ -922,7 +922,7 @@ int main(int argc, char **argv) {
>  
>          case 't':
>              if (virStrToLong_i(optarg, &tmp, 10, &timeout) != 0
> -                || timeout <= 0
> +                || timeout < 0
>                  /* Ensure that we can multiply by 1000 without overflowing.  */
>                  || timeout > INT_MAX / 1000) {
>                  VIR_ERROR(_("Invalid value for timeout"));
> @@ -1123,7 +1123,7 @@ int main(int argc, char **argv) {
>              adminSrv = virNetDaemonGetServer(lockDaemon->dmn, "admin");
>      }
>  
> -    if (timeout != -1) {
> +    if (timeout > 0) {
>          VIR_DEBUG("Registering shutdown timeout %d", timeout);
>          virNetDaemonAutoShutdown(lockDaemon->dmn,
>                                   timeout);

This conditional can be removed because virNetDaemonAutoShutdown
treats "timeout == 0" as meaning no timeout.

Likewise in other files.

Regards,
Daniel
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