libvirt/src/qemu/qemu_cgroup.h

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/*
* qemu_cgroup.h: QEMU cgroup management
*
* Copyright (C) 2006-2007, 2009-2014 Red Hat, Inc.
* Copyright (C) 2006 Daniel P. Berrange
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see
* <http://www.gnu.org/licenses/>.
*
* Author: Daniel P. Berrange <berrange@redhat.com>
*/
#ifndef __QEMU_CGROUP_H__
# define __QEMU_CGROUP_H__
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# include "virusb.h"
# include "vircgroup.h"
# include "domain_conf.h"
# include "qemu_conf.h"
int qemuSetupImageCgroup(virDomainObjPtr vm,
virStorageSourcePtr src);
int qemuTeardownImageCgroup(virDomainObjPtr vm,
virStorageSourcePtr src);
int qemuSetupDiskCgroup(virDomainObjPtr vm,
virDomainDiskDefPtr disk);
int qemuTeardownDiskCgroup(virDomainObjPtr vm,
virDomainDiskDefPtr disk);
int qemuSetupHostdevCgroup(virDomainObjPtr vm,
virDomainHostdevDefPtr dev)
ATTRIBUTE_RETURN_CHECK;
int qemuTeardownHostdevCgroup(virDomainObjPtr vm,
virDomainHostdevDefPtr dev)
ATTRIBUTE_RETURN_CHECK;
int qemuSetupMemoryDevicesCgroup(virDomainObjPtr vm,
virDomainMemoryDefPtr mem);
int qemuTeardownMemoryDevicesCgroup(virDomainObjPtr vm,
virDomainMemoryDefPtr mem);
int qemuSetupRNGCgroup(virDomainObjPtr vm,
virDomainRNGDefPtr rng);
int qemuTeardownRNGCgroup(virDomainObjPtr vm,
virDomainRNGDefPtr rng);
int qemuSetupChardevCgroup(virDomainObjPtr vm,
virDomainChrDefPtr dev);
int qemuTeardownChardevCgroup(virDomainObjPtr vm,
virDomainChrDefPtr dev);
int qemuConnectCgroup(virQEMUDriverPtr driver,
virDomainObjPtr vm);
int qemuSetupCgroup(virQEMUDriverPtr driver,
virDomainObjPtr vm,
size_t nnicindexes,
int *nicindexes);
int qemuSetupCpusetMems(virDomainObjPtr vm);
int qemuSetupCgroupVcpuBW(virCgroupPtr cgroup,
unsigned long long period,
long long quota);
int qemuSetupCgroupCpusetCpus(virCgroupPtr cgroup, virBitmapPtr cpumask);
int qemuSetupGlobalCpuCgroup(virDomainObjPtr vm);
systemd: Modernize machine naming So, systemd-machined has this philosophy that machine names are like hostnames and hence should follow the same rules. But we always allowed international characters in domain names. Thus we need to modify the machine name we are passing to systemd. In order to change some machine names that we will be passing to systemd, we also need to call TerminateMachine at the end of a lifetime of a domain. Even for domains that were started with older libvirt. That can be achieved thanks to virSystemdGetMachineNameByPID(). And because we can change machine names, we can get rid of the inconsistent and pointless escaping of domain names when creating machine names. So this patch modifies the naming in the following way. It creates the name as <drivername>-<id>-<name> where invalid hostname characters are stripped out of the name and if the resulting name is longer, it truncates it to 64 characters. That way we can start domains we couldn't start before. Well, at least on systemd. To make it work all together, the machineName (which is needed only with systemd) is saved in domain's private data. That way the generation is moved to the driver and we don't need to pass various unnecessary arguments to cgroup functions. The only thing this complicates a bit is the scope generation when validating a cgroup where we must check both old and new naming, so a slight modification was needed there. Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1282846 Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
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int qemuRemoveCgroup(virDomainObjPtr vm);
typedef struct _qemuCgroupEmulatorAllNodesData qemuCgroupEmulatorAllNodesData;
typedef qemuCgroupEmulatorAllNodesData *qemuCgroupEmulatorAllNodesDataPtr;
struct _qemuCgroupEmulatorAllNodesData {
virCgroupPtr emulatorCgroup;
char *emulatorMemMask;
};
int qemuCgroupEmulatorAllNodesAllow(virCgroupPtr cgroup,
qemuCgroupEmulatorAllNodesDataPtr *data);
void qemuCgroupEmulatorAllNodesRestore(qemuCgroupEmulatorAllNodesDataPtr data);
extern const char *const defaultDeviceACL[];
#endif /* __QEMU_CGROUP_H__ */