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Since PIDs can be reused, polkit prefers to be given a (PID,start time) pair. If given a PID on its own, it will attempt to lookup the start time in /proc/pid/stat, though this is subject to races. It is safer if the client app resolves the PID start time itself, because as long as the app has the client socket open, the client PID won't be reused. Signed-off-by: Daniel P. Berrange <berrange@redhat.com> (cherry picked from commit 979e9c56a7aadf2dcfbddd1abfbad594b78b4468) Signed-off-by: Eric Blake <eblake@redhat.com> Conflicts: src/libvirt_private.syms - not backported src/locking/lock_daemon.c - not backported src/rpc/virnetserverclient.c src/rpc/virnetsocket.c src/rpc/virnetsocket.h src/util/viridentity.h - not backported src/util/virprocess.c src/util/virprocess.h src/util/virstring.c src/util/virstring.h Most conflicts were contextual (this patch adds new functions, but upstream intermediate patches not backported here also added new features, and the resolution was picking out just the portions needed by this commit). virnetsocket.c also had slightly different locking semantics.
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>