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Running valgrind on a very simplistic program consisting only of opening and closing admin connection (virAdmConnect{Open,Close}) shows a leak in remoteAdminPrivNew, because the last reference to privateData is not decremented, thus the object won't be disposed. This patch unrefs the privateData object once we closed the active connection to daemon, making further use of this connection useless. ==24577== at 0x4A089C7: calloc (in /usr/lib64/valgrind/vgpreload_***linux.so) ==24577== by 0x4E8835F: virAllocVar (viralloc.c:560) ==24577== by 0x4EDFA5C: virObjectNew (virobject.c:193) ==24577== by 0x4EDFBD4: virObjectLockableNew (virobject.c:219) ==24577== by 0x4C14DAF: remoteAdminPrivNew (libvirt-admin.c:152) ==24577== by 0x4C1537E: virAdmConnectOpen (libvirt-admin.c:308) ==24577== by 0x400BAD: main (listservers.c:39) ==24577== LEAK SUMMARY: ==24577== definitely lost: 80 bytes in 1 blocks ==24577== indirectly lost: 840 bytes in 6 blocks ==24577== possibly lost: 0 bytes in 0 blocks ==24577== still reachable: 12,179 bytes in 199 blocks ==24577== suppressed: 0 bytes in 0 blocks
LibVirt : simple API for virtualization Libvirt is a C toolkit to interact with the virtualization capabilities of recent versions of Linux (and other OSes). It is free software available under the GNU Lesser General Public License. Virtualization of the Linux Operating System means the ability to run multiple instances of Operating Systems concurrently on a single hardware system where the basic resources are driven by a Linux instance. The library aim at providing long term stable C API initially for the Xen paravirtualization but should be able to integrate other virtualization mechanisms if needed. Daniel Veillard <veillard@redhat.com>
Description
Libvirt provides a portable, long term stable C API for managing the
virtualization technologies provided by many operating systems. It
includes support for QEMU, KVM, Xen, LXC, bhyve, Virtuozzo, VMware
vCenter and ESX, VMware Desktop, Hyper-V, VirtualBox and the POWER
Hypervisor.
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