Re: [Kimchi-devel] [PATCH 4/5] Add a monitor to change iso ownership

From: Royce Lv <lvroyce(a)linux.vnet.ibm.com&gt; Add a threaded monitor to change file ownership. Also its pynotify dependecy is added. Signed-off-by: Royce Lv <lvroyce(a)linux.vnet.ibm.com&gt; --- docs/README.md | 6 ++++-- src/kimchi/isomonitor.py | 33 +++++++++++++++++++++++++++++++++ 2 files changed, 37 insertions(+), 2 deletions(-) create mode 100644 src/kimchi/isomonitor.py diff --git a/docs/README.md b/docs/README.md index 63ac760..9f059ca 100644 --- a/docs/README.md +++ b/docs/README.md @@ -53,7 +53,8 @@ Install Dependencies PyPAM m2crypto python-jsonschema rpm-build \ qemu-kvm python-psutil python-ethtool sos \ python-ipaddr python-lxml nfs-utils \ - iscsi-initiator-utils libxslt pyparted nginx + iscsi-initiator-utils libxslt pyparted nginx \ + python-inotify # If using RHEL6, install the following additional packages: $ sudo yum install python-unittest2 python-ordereddict # Restart libvirt to allow configuration changes to take effect @@ -75,7 +76,8 @@ for more information on how to configure your system to access this repository. python-pam python-m2crypto python-jsonschema \ qemu-kvm libtool python-psutil python-ethtool \ sosreport python-ipaddr python-lxml nfs-common \ - open-iscsi lvm2 xsltproc python-parted nginx + open-iscsi lvm2 xsltproc python-parted nginx \ + python-pyinotify Packages version requirement: python-jsonschema >= 1.3.0 diff --git a/src/kimchi/isomonitor.py b/src/kimchi/isomonitor.py new file mode 100644 index 0000000..c20d71a --- /dev/null +++ b/src/kimchi/isomonitor.py

@@ -0,0 +1,33 @@ +import os +import pyinotify + + +from kimchi.utils import get_qemu_owner + + +class EventHandler(pyinotify.ProcessEvent): + def process_IN_CREATE(self, event): + uid, gid = get_qemu_owner() + os.chown(event.pathname, uid, gid) + + +class pathMonitor(object): + def __init__(self): + self.wm = pyinotify.WatchManager() + self.notifier = pyinotify.ThreadedNotifier(self.wm, EventHandler()) + self.handlers = dict() + + self.notifier.start() + + def add_monitor_path(self, path): + mask = pyinotify.IN_DELETE | pyinotify.IN_CREATE # watched events + self.handlers[path] = self.wm.add_watch(path, mask, rec=True) + + def rm_monitor_path(self, path): + self.wm.rm_watch(self.handlers.pop(path).values()) + + def stop_monitor(self): + for path in self.handlers.iterkeys(): + self.rm_monitor_path(path) + self.notifier.stop() +