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Fix locking for udev device add/remove

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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: add necessary locks in
  udevRemoveOneDevice() and udevAddOneDevice()
This commit is contained in:
David Allan 2010-02-03 16:56:33 +01:00 committed by Daniel Veillard
parent fe1183a7cd
commit 8d42b9b4e8
1 changed files with 6 additions and 0 deletions
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6
src/node_device/node_device_udev.c
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@ -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);