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This patch adds two sets of functions: 1) lower level virProcessSet*() functions that will immediately set the RLIMIT_MEMLOCK. RLIMIT_NPROC, or RLIMIT_NOFILE of either the current process (using setrlimit()) or any other process (using prlimit()). "current process" is indicated by passing a 0 for pid. 2) functions for virCommand* that will setup a virCommand object to set those limits at a later time just after it has forked a new process, but before it execs the new program. configure.ac has prlimit and setrlimit added to the list of functions to check for, and the low level functions log an "unsupported" error) on platforms that don't support those functions.
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>