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3d1596b048
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>
51 lines
1.6 KiB
C
51 lines
1.6 KiB
C
/* -*- c -*-
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* libvirt-lxc.h: Interfaces specific for LXC driver
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* Summary: lxc specific interfaces
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* Description: Provides the interfaces of the libvirt library to handle
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* LXC specific methods
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*
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* Copyright (C) 2012-2013 Red Hat, Inc.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library. If not, see
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* <http://www.gnu.org/licenses/>.
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*
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* Author: Daniel P. Berrange <berrange@redhat.com>
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*/
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#ifndef __VIR_LXC_H__
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# define __VIR_LXC_H__
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# include "libvirt/libvirt.h"
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# ifdef __cplusplus
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extern "C" {
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# endif
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int virDomainLxcOpenNamespace(virDomainPtr domain,
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int **fdlist,
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unsigned int flags);
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int virDomainLxcEnterNamespace(virDomainPtr domain,
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unsigned int nfdlist,
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int *fdlist,
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unsigned int *noldfdlist,
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int **oldfdlist,
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unsigned int flags);
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# ifdef __cplusplus
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}
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# endif
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#endif /* __VIR_LXC_H__ */
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