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authorDaniel P. Berrange <berrange@redhat.com>2012-12-21 13:15:19 +0000
committerDaniel P. Berrange <berrange@redhat.com>2013-01-14 13:58:34 +0000
commitd18147940f8e330881681c7ef68505ac4463e652 (patch)
tree1553c58ac179ce3f1f2f6f06eabb20a5c9e04ad1 /libvirt-override.c
parent9ad1c7f711344550e971d365faf9987923bc671f (diff)
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Introduce an LXC specific public API & library
This patch introduces support for LXC specific public APIs. In common with what was done for QEMU, this creates a libvirt_lxc.so library and libvirt/libvirt-lxc.h header file. The actual APIs are int virDomainLxcOpenNamespace(virDomainPtr domain, int **fdlist, unsigned int flags); int virDomainLxcEnterNamespace(virDomainPtr domain, unsigned int nfdlist, int *fdlist, unsigned int *noldfdlist, int **oldfdlist, unsigned int flags); which provide a way to use the setns() system call to move the calling process into the container's namespace. It is not practical to write in a generically applicable manner. The nearest that we could get to such an API would be an API which allows to pass a command + argv to be executed inside a container. Even if we had such a generic API, this LXC specific API is still useful, because it allows the caller to maintain the current process context, in particular any I/O streams they have open. NB the virDomainLxcEnterNamespace() API is special in that it runs client side, so does not involve the internal driver API. Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
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