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ed1ba69f5a
Kernel commit <d505b8af58912ae1e1a211fabc9995b19bd40828> added proper check for cpu quota maximum limit to prevent internal overflow. Even though this change is not present in all kernels it makes sense to enforce the same limit in libvirt. Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1750315 Signed-off-by: Pavel Hrdina <phrdina@redhat.com> Reviewed-by: Daniel Henrique Barboza <danielhb413@gmail.com>
287 lines
11 KiB
C
287 lines
11 KiB
C
/*
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* vircgroup.h: methods for managing control cgroups
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*
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* Copyright (C) 2011-2015 Red Hat, Inc.
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* Copyright IBM Corp. 2008
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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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#pragma once
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#include "virbitmap.h"
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#include "virenum.h"
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struct _virCgroup;
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typedef struct _virCgroup virCgroup;
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typedef virCgroup *virCgroupPtr;
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enum {
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VIR_CGROUP_CONTROLLER_CPU,
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VIR_CGROUP_CONTROLLER_CPUACCT,
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VIR_CGROUP_CONTROLLER_CPUSET,
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VIR_CGROUP_CONTROLLER_MEMORY,
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VIR_CGROUP_CONTROLLER_DEVICES,
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VIR_CGROUP_CONTROLLER_FREEZER,
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VIR_CGROUP_CONTROLLER_BLKIO,
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VIR_CGROUP_CONTROLLER_NET_CLS,
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VIR_CGROUP_CONTROLLER_PERF_EVENT,
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VIR_CGROUP_CONTROLLER_SYSTEMD,
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VIR_CGROUP_CONTROLLER_LAST
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};
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VIR_ENUM_DECL(virCgroupController);
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/* Items of this enum are used later in virCgroupNew to create
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* bit array stored in int. Like this:
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* 1 << VIR_CGROUP_CONTROLLER_CPU
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* Make sure we will not overflow */
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G_STATIC_ASSERT(VIR_CGROUP_CONTROLLER_LAST < 8 * sizeof(int));
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typedef enum {
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VIR_CGROUP_THREAD_VCPU = 0,
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VIR_CGROUP_THREAD_EMULATOR,
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VIR_CGROUP_THREAD_IOTHREAD,
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VIR_CGROUP_THREAD_LAST
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} virCgroupThreadName;
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bool virCgroupAvailable(void);
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int virCgroupNew(const char *path,
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int controllers,
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virCgroupPtr *group);
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int virCgroupNewSelf(virCgroupPtr *group)
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ATTRIBUTE_NONNULL(1);
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int virCgroupNewThread(virCgroupPtr domain,
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virCgroupThreadName nameval,
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int id,
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bool create,
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virCgroupPtr *group)
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ATTRIBUTE_NONNULL(1) ATTRIBUTE_NONNULL(5);
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int virCgroupDelThread(virCgroupPtr cgroup,
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virCgroupThreadName nameval,
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int idx);
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int virCgroupNewDetect(pid_t pid,
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int controllers,
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virCgroupPtr *group);
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int
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virCgroupNewDetectMachine(const char *name,
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const char *drivername,
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pid_t pid,
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int controllers,
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char *machinename,
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virCgroupPtr *group)
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ATTRIBUTE_NONNULL(1) ATTRIBUTE_NONNULL(2);
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int virCgroupNewMachine(const char *name,
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const char *drivername,
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const unsigned char *uuid,
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const char *rootdir,
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pid_t pidleader,
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bool isContainer,
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size_t nnicindexes,
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int *nicindexes,
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const char *partition,
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int controllers,
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unsigned int maxthreads,
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virCgroupPtr *group)
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ATTRIBUTE_NONNULL(1) ATTRIBUTE_NONNULL(2)
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ATTRIBUTE_NONNULL(3);
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int virCgroupTerminateMachine(const char *name)
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ATTRIBUTE_NONNULL(1);
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bool virCgroupNewIgnoreError(void);
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void virCgroupFree(virCgroupPtr group);
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G_DEFINE_AUTOPTR_CLEANUP_FUNC(virCgroup, virCgroupFree);
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bool virCgroupHasController(virCgroupPtr cgroup, int controller);
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int virCgroupPathOfController(virCgroupPtr group,
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unsigned int controller,
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const char *key,
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char **path);
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int virCgroupAddProcess(virCgroupPtr group, pid_t pid);
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int virCgroupAddMachineProcess(virCgroupPtr group, pid_t pid);
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int virCgroupAddThread(virCgroupPtr group, pid_t pid);
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int virCgroupSetBlkioWeight(virCgroupPtr group, unsigned int weight);
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int virCgroupGetBlkioWeight(virCgroupPtr group, unsigned int *weight);
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int virCgroupGetBlkioIoServiced(virCgroupPtr group,
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long long *bytes_read,
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long long *bytes_write,
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long long *requests_read,
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long long *requests_write);
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int virCgroupGetBlkioIoDeviceServiced(virCgroupPtr group,
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const char *path,
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long long *bytes_read,
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long long *bytes_write,
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long long *requests_read,
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long long *requests_write);
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int virCgroupSetupBlkioDeviceWeight(virCgroupPtr cgroup,
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const char *path,
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unsigned int *weight);
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int virCgroupSetupBlkioDeviceReadIops(virCgroupPtr cgroup,
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const char *path,
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unsigned int *riops);
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int virCgroupSetupBlkioDeviceWriteIops(virCgroupPtr cgroup,
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const char *path,
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unsigned int *wiops);
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int virCgroupSetupBlkioDeviceReadBps(virCgroupPtr cgroup,
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const char *path,
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unsigned long long *rbps);
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int virCgroupSetupBlkioDeviceWriteBps(virCgroupPtr cgroup,
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const char *path,
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unsigned long long *wbps);
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int virCgroupSetMemory(virCgroupPtr group, unsigned long long kb);
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int virCgroupGetMemoryStat(virCgroupPtr group,
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unsigned long long *cache,
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unsigned long long *activeAnon,
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unsigned long long *inactiveAnon,
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unsigned long long *activeFile,
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unsigned long long *inactiveFile,
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unsigned long long *unevictable);
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int virCgroupGetMemoryUsage(virCgroupPtr group, unsigned long *kb);
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int virCgroupSetMemoryHardLimit(virCgroupPtr group, unsigned long long kb);
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int virCgroupGetMemoryHardLimit(virCgroupPtr group, unsigned long long *kb);
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int virCgroupSetMemorySoftLimit(virCgroupPtr group, unsigned long long kb);
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int virCgroupGetMemorySoftLimit(virCgroupPtr group, unsigned long long *kb);
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int virCgroupSetMemSwapHardLimit(virCgroupPtr group, unsigned long long kb);
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int virCgroupGetMemSwapHardLimit(virCgroupPtr group, unsigned long long *kb);
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int virCgroupGetMemSwapUsage(virCgroupPtr group, unsigned long long *kb);
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enum {
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VIR_CGROUP_DEVICE_READ = 1,
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VIR_CGROUP_DEVICE_WRITE = 2,
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VIR_CGROUP_DEVICE_MKNOD = 4,
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VIR_CGROUP_DEVICE_RW = VIR_CGROUP_DEVICE_READ | VIR_CGROUP_DEVICE_WRITE,
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VIR_CGROUP_DEVICE_RWM = VIR_CGROUP_DEVICE_RW | VIR_CGROUP_DEVICE_MKNOD,
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};
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const char *virCgroupGetDevicePermsString(int perms);
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int virCgroupDenyAllDevices(virCgroupPtr group);
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int virCgroupAllowAllDevices(virCgroupPtr group, int perms);
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int virCgroupAllowDevice(virCgroupPtr group,
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char type,
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int major,
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int minor,
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int perms);
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int virCgroupAllowDevicePath(virCgroupPtr group,
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const char *path,
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int perms,
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bool ignoreEacces);
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int virCgroupDenyDevice(virCgroupPtr group,
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char type,
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int major,
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int minor,
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int perms);
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int virCgroupDenyDevicePath(virCgroupPtr group,
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const char *path,
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int perms,
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bool ignoreEacces);
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int
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virCgroupGetPercpuStats(virCgroupPtr group,
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virTypedParameterPtr params,
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unsigned int nparams,
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int start_cpu,
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unsigned int ncpus,
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virBitmapPtr guestvcpus);
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int
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virCgroupGetDomainTotalCpuStats(virCgroupPtr group,
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virTypedParameterPtr params,
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int nparams);
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int virCgroupSetCpuShares(virCgroupPtr group, unsigned long long shares);
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int virCgroupGetCpuShares(virCgroupPtr group, unsigned long long *shares);
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int virCgroupSetupCpuShares(virCgroupPtr cgroup, unsigned long long shares,
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unsigned long long *realValue);
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#define VIR_CGROUP_CPU_PERIOD_MIN 1000LL
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#define VIR_CGROUP_CPU_PERIOD_MAX 1000000LL
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#define VIR_CGROUP_CPU_QUOTA_MIN 1000LL
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/* Based on kernel code ((1ULL << MAX_BW_BITS) - 1) where MAX_BW_BITS is
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* (64 - BW_SHIFT) and BW_SHIFT is 20 */
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#define VIR_CGROUP_CPU_QUOTA_MAX 17592186044415LL
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int virCgroupSetCpuCfsPeriod(virCgroupPtr group, unsigned long long cfs_period);
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int virCgroupGetCpuCfsPeriod(virCgroupPtr group, unsigned long long *cfs_period);
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int virCgroupGetCpuPeriodQuota(virCgroupPtr cgroup, unsigned long long *period,
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long long *quota);
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int virCgroupSetupCpuPeriodQuota(virCgroupPtr cgroup, unsigned long long period,
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long long quota);
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int virCgroupSetCpuCfsQuota(virCgroupPtr group, long long cfs_quota);
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int virCgroupGetCpuCfsQuota(virCgroupPtr group, long long *cfs_quota);
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int virCgroupGetCpuacctUsage(virCgroupPtr group, unsigned long long *usage);
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int virCgroupGetCpuacctPercpuUsage(virCgroupPtr group, char **usage);
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int virCgroupGetCpuacctStat(virCgroupPtr group, unsigned long long *user,
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unsigned long long *sys);
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int virCgroupSetFreezerState(virCgroupPtr group, const char *state);
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int virCgroupGetFreezerState(virCgroupPtr group, char **state);
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int virCgroupSetCpusetMems(virCgroupPtr group, const char *mems);
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int virCgroupGetCpusetMems(virCgroupPtr group, char **mems);
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int virCgroupSetCpusetMemoryMigrate(virCgroupPtr group, bool migrate);
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int virCgroupGetCpusetMemoryMigrate(virCgroupPtr group, bool *migrate);
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int virCgroupSetCpusetCpus(virCgroupPtr group, const char *cpus);
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int virCgroupGetCpusetCpus(virCgroupPtr group, char **cpus);
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int virCgroupSetupCpusetCpus(virCgroupPtr cgroup, virBitmapPtr cpumask);
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int virCgroupRemove(virCgroupPtr group);
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int virCgroupKillRecursive(virCgroupPtr group, int signum);
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int virCgroupKillPainfully(virCgroupPtr group);
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int virCgroupBindMount(virCgroupPtr group,
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const char *oldroot,
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const char *mountopts);
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bool virCgroupSupportsCpuBW(virCgroupPtr cgroup);
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int virCgroupSetOwner(virCgroupPtr cgroup,
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uid_t uid,
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gid_t gid,
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int controllers);
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int virCgroupHasEmptyTasks(virCgroupPtr cgroup, int controller);
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bool virCgroupControllerAvailable(int controller);
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