[libvirt PATCH] logging: allow max_len=0 to disable log rollover

[Peter Krempa]

On Tue, Oct 13, 2020 at 10:21:58 +0100, Daniel Berrange wrote:
> Currently setting max_len=0 causes virtlogd to spin in a busy loop. It
> is natural to allow this to disable log rollover which can be useful for
> developers debugging things.
> 
> Note disabling rollover exposes the host to denial of service from a
> malicious guest, so must be used with care.
> 
> Closes https://gitlab.com/libvirt/libvirt/-/issues/85
> Signed-off-by: Daniel P. Berrangé <berrange at redhat.com>
> ---
>  src/logging/virtlogd.conf  |  4 ++++
>  src/util/virrotatingfile.c | 48 +++++++++++++++++++++-----------------
>  2 files changed, 30 insertions(+), 22 deletions(-)

Reviewed-by: Peter Krempa <pkrempa at redhat.com>