[libvirt] [PATCH 1/1] Fix locking for udev device add/remove
Daniel Veillard
veillard at redhat.com
Wed Feb 3 15:59:39 UTC 2010
On Tue, Feb 02, 2010 at 09:27:35PM +0100, Daniel Veillard wrote:
> On Tue, Feb 02, 2010 at 02:54:12PM -0500, David Allan wrote:
> > * The original udev node device backend neglected to lock the driverState struct containing the device list when adding and removing devices.
> > ---
> > src/node_device/node_device_udev.c | 6 ++++++
> > 1 files changed, 6 insertions(+), 0 deletions(-)
> >
> > diff --git a/src/node_device/node_device_udev.c b/src/node_device/node_device_udev.c
> > index 2bc2d32..be765c4 100644
> > --- a/src/node_device/node_device_udev.c
> > +++ b/src/node_device/node_device_udev.c
> > @@ -1190,7 +1190,9 @@ static int udevRemoveOneDevice(struct udev_device *device)
> > int ret = 0;
> >
> > name = udev_device_get_syspath(device);
> > + nodeDeviceLock(driverState);
> > dev = virNodeDeviceFindBySysfsPath(&driverState->devs, name);
> > +
> > if (dev != NULL) {
> > VIR_DEBUG("Removing device '%s' with sysfs path '%s'",
> > dev->def->name, name);
> > @@ -1200,6 +1202,7 @@ static int udevRemoveOneDevice(struct udev_device *device)
> > name);
> > ret = -1;
> > }
> > + nodeDeviceUnlock(driverState);
> >
> > return ret;
> > }
> > @@ -1288,7 +1291,10 @@ static int udevAddOneDevice(struct udev_device *device)
> > goto out;
> > }
> >
> > + nodeDeviceLock(driverState);
> > dev = virNodeDeviceAssignDef(NULL, &driverState->devs, def);
> > + nodeDeviceUnlock(driverState);
> > +
> > if (dev == NULL) {
> > VIR_ERROR("Failed to create device for '%s'", def->name);
> > virNodeDeviceDefFree(def);
>
> ACK, looks fine to me,
Okay, applied !
Daniel
--
Daniel Veillard | libxml Gnome XML XSLT toolkit http://xmlsoft.org/
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