Re: [libvirt] [PATCH 05/12] nodedev: acquire a pidfile in the driver root directory

When we allow multiple instances of the driver for the same user account, using a separate root directory, we need to ensure mutual exclusion. Use a pidfile to guarantee this. In privileged libvirtd this ends up locking /var/run/libvirt/nodedev/driver.pid In unprivileged libvirtd this ends up locking /run/user/$UID/libvirt/nodedev/run/driver.pid NB, the latter can vary depending on $XDG_RUNTIME_DIR Signed-off-by: Daniel P. Berrangé <berrange(a)redhat.com&gt; --- src/conf/virnodedeviceobj.h | 5 +++++ src/node_device/node_device_hal.c | 31 +++++++++++++++++++++++++++++ src/node_device/node_device_udev.c | 32 ++++++++++++++++++++++++++++++ 3 files changed, 68 insertions(+)