Re: [libvirt] [PATCH v5] Add helper program to create custom leases

Introduce helper program to catch events from dnsmasq and maintain a custom lease file per network. It supports dhcpv4 and dhcpv6. The file is saved as "<interface-name>.status". Each lease contains the following info: <expiry-time (epoch time)> <mac> <iaid> <ip-address> <hostname> <clientid> Example of custom leases file content: [ { "iaid": "1221229", "ip-address": "2001:db8:ca2:2:1::95", "mac-address": "52:54:00:12:a2:6d", "hostname": "Fedora20", "client-id": "00:04:1a:c1:d9:6b:5a:0a:e2:bc:f8:4b:1e:37:2e:38:22:55", "expiry-time": 1393244216 }, { "ip-address": "192.168.150.208", "mac-address": "52:54:00:11:56:b3", "hostname": "Wani-PC", "client-id": "01:52:54:00:11:56:b3", "expiry-time": 1393244248 } ] src/Makefile.am: * Add options to compile the helper program src/network/bridge_driver.c: * Introduce networkDnsmasqLeaseFileNameCustom() * Invoke helper program along with dnsmasq * Delete the .status file when corresponding n/w is destroyed. src/network/leaseshelper.c * Helper program to create the custom lease file --- v5: * More comments added, for better explanation * Use of virFileFindResource() to identify proper path to helper binary * Use of VIR_ENUM_IMPL for handling action events added v4: * Addition of pidfile and a corresponding lock for it * Make correction for dnsmasq < 2.52 (Only IPv4) * Move helper file from src/util to src/network * Increase limit on max size of leases file * Refer: https://www.redhat.com/archives/libvir-list/2014-March/msg01038.html v3: * Improved file handling, removed redundant copying, introduced --help and --version * Refer: https://www.redhat.com/archives/libvir-list/2014-February/msg01431.html v2: * Changed format to JSON * Refer: https://www.redhat.com/archives/libvir-list/2014-January/msg01234.html v1: * Refer: https://www.redhat.com/archives/libvir-list/2014-January/msg00626.html src/Makefile.am | 22 +++ src/network/bridge_driver.c | 27 ++++ src/network/leaseshelper.c | 360 +++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 409 insertions(+), 0 deletions(-) create mode 100644 src/network/leaseshelper.c