libvirt/tests/vircgrouptest.c

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/*
* Copyright (C) 2013 Red Hat, Inc.
*
* 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>
*/
#include <config.h>
#include "testutils.h"
#ifdef __linux__
# include <stdlib.h>
# define __VIR_CGROUP_ALLOW_INCLUDE_PRIV_H__
# include "vircgrouppriv.h"
# include "virutil.h"
# include "virerror.h"
# include "virlog.h"
# include "virfile.h"
# define VIR_FROM_THIS VIR_FROM_NONE
static int validateCgroup(virCgroupPtr cgroup,
const char *expectPath,
const char **expectMountPoint,
const char **expectLinkPoint,
const char **expectPlacement)
{
int i;
if (STRNEQ(cgroup->path, expectPath)) {
fprintf(stderr, "Wrong path '%s', expected '%s'\n",
cgroup->path, expectPath);
return -1;
}
for (i = 0 ; i < VIR_CGROUP_CONTROLLER_LAST ; i++) {
if (STRNEQ_NULLABLE(expectMountPoint[i],
cgroup->controllers[i].mountPoint)) {
fprintf(stderr, "Wrong mount '%s', expected '%s' for '%s'\n",
cgroup->controllers[i].mountPoint,
expectMountPoint[i],
virCgroupControllerTypeToString(i));
return -1;
}
if (STRNEQ_NULLABLE(expectLinkPoint[i],
cgroup->controllers[i].linkPoint)) {
fprintf(stderr, "Wrong link '%s', expected '%s' for '%s'\n",
cgroup->controllers[i].linkPoint,
expectLinkPoint[i],
virCgroupControllerTypeToString(i));
return -1;
}
if (STRNEQ_NULLABLE(expectPlacement[i],
cgroup->controllers[i].placement)) {
fprintf(stderr, "Wrong placement '%s', expected '%s' for '%s'\n",
cgroup->controllers[i].placement,
expectPlacement[i],
virCgroupControllerTypeToString(i));
return -1;
}
}
return 0;
}
const char *mountsSmall[VIR_CGROUP_CONTROLLER_LAST] = {
[VIR_CGROUP_CONTROLLER_CPU] = "/not/really/sys/fs/cgroup/cpu,cpuacct",
[VIR_CGROUP_CONTROLLER_CPUACCT] = "/not/really/sys/fs/cgroup/cpu,cpuacct",
[VIR_CGROUP_CONTROLLER_CPUSET] = NULL,
[VIR_CGROUP_CONTROLLER_MEMORY] = "/not/really/sys/fs/cgroup/memory",
[VIR_CGROUP_CONTROLLER_DEVICES] = NULL,
[VIR_CGROUP_CONTROLLER_FREEZER] = NULL,
[VIR_CGROUP_CONTROLLER_BLKIO] = NULL,
};
const char *mountsFull[VIR_CGROUP_CONTROLLER_LAST] = {
[VIR_CGROUP_CONTROLLER_CPU] = "/not/really/sys/fs/cgroup/cpu,cpuacct",
[VIR_CGROUP_CONTROLLER_CPUACCT] = "/not/really/sys/fs/cgroup/cpu,cpuacct",
[VIR_CGROUP_CONTROLLER_CPUSET] = "/not/really/sys/fs/cgroup/cpuset",
[VIR_CGROUP_CONTROLLER_MEMORY] = "/not/really/sys/fs/cgroup/memory",
[VIR_CGROUP_CONTROLLER_DEVICES] = NULL,
[VIR_CGROUP_CONTROLLER_FREEZER] = "/not/really/sys/fs/cgroup/freezer",
[VIR_CGROUP_CONTROLLER_BLKIO] = "/not/really/sys/fs/cgroup/blkio",
};
const char *links[VIR_CGROUP_CONTROLLER_LAST] = {
[VIR_CGROUP_CONTROLLER_CPU] = "/not/really/sys/fs/cgroup/cpu",
[VIR_CGROUP_CONTROLLER_CPUACCT] = "/not/really/sys/fs/cgroup/cpuacct",
[VIR_CGROUP_CONTROLLER_CPUSET] = NULL,
[VIR_CGROUP_CONTROLLER_MEMORY] = NULL,
[VIR_CGROUP_CONTROLLER_DEVICES] = NULL,
[VIR_CGROUP_CONTROLLER_FREEZER] = NULL,
[VIR_CGROUP_CONTROLLER_BLKIO] = NULL,
};
static int testCgroupNewForSelf(const void *args ATTRIBUTE_UNUSED)
{
virCgroupPtr cgroup = NULL;
int ret = -1;
const char *placement[VIR_CGROUP_CONTROLLER_LAST] = {
[VIR_CGROUP_CONTROLLER_CPU] = "/system",
[VIR_CGROUP_CONTROLLER_CPUACCT] = "/system",
[VIR_CGROUP_CONTROLLER_CPUSET] = "/",
[VIR_CGROUP_CONTROLLER_MEMORY] = "/",
[VIR_CGROUP_CONTROLLER_DEVICES] = NULL,
[VIR_CGROUP_CONTROLLER_FREEZER] = "/",
[VIR_CGROUP_CONTROLLER_BLKIO] = "/",
};
if (virCgroupNewSelf(&cgroup) < 0) {
fprintf(stderr, "Cannot create cgroup for self\n");
goto cleanup;
}
ret = validateCgroup(cgroup, "", mountsFull, links, placement);
cleanup:
virCgroupFree(&cgroup);
return ret;
}
static int testCgroupNewForDriver(const void *args ATTRIBUTE_UNUSED)
{
virCgroupPtr cgroup = NULL;
int ret = -1;
int rv;
const char *placementSmall[VIR_CGROUP_CONTROLLER_LAST] = {
[VIR_CGROUP_CONTROLLER_CPU] = "/system/libvirt/lxc",
[VIR_CGROUP_CONTROLLER_CPUACCT] = "/system/libvirt/lxc",
[VIR_CGROUP_CONTROLLER_CPUSET] = NULL,
[VIR_CGROUP_CONTROLLER_MEMORY] = "/libvirt/lxc",
[VIR_CGROUP_CONTROLLER_DEVICES] = NULL,
[VIR_CGROUP_CONTROLLER_FREEZER] = NULL,
[VIR_CGROUP_CONTROLLER_BLKIO] = NULL,
};
const char *placementFull[VIR_CGROUP_CONTROLLER_LAST] = {
[VIR_CGROUP_CONTROLLER_CPU] = "/system/libvirt/lxc",
[VIR_CGROUP_CONTROLLER_CPUACCT] = "/system/libvirt/lxc",
[VIR_CGROUP_CONTROLLER_CPUSET] = "/libvirt/lxc",
[VIR_CGROUP_CONTROLLER_MEMORY] = "/libvirt/lxc",
[VIR_CGROUP_CONTROLLER_DEVICES] = NULL,
[VIR_CGROUP_CONTROLLER_FREEZER] = "/libvirt/lxc",
[VIR_CGROUP_CONTROLLER_BLKIO] = "/libvirt/lxc",
};
if ((rv = virCgroupNewDriver("lxc", false, -1, &cgroup)) != -ENOENT) {
fprintf(stderr, "Unexpected found LXC cgroup: %d\n", -rv);
goto cleanup;
}
/* Asking for impossible combination since CPU is co-mounted */
if ((rv = virCgroupNewDriver("lxc", true,
(1 << VIR_CGROUP_CONTROLLER_CPU),
&cgroup)) != -EINVAL) {
fprintf(stderr, "Should not have created LXC cgroup: %d\n", -rv);
goto cleanup;
}
/* Asking for impossible combination since devices is not mounted */
if ((rv = virCgroupNewDriver("lxc", true,
(1 << VIR_CGROUP_CONTROLLER_DEVICES),
&cgroup)) != -ENOENT) {
fprintf(stderr, "Should not have created LXC cgroup: %d\n", -rv);
goto cleanup;
}
/* Asking for small combination since devices is not mounted */
if ((rv = virCgroupNewDriver("lxc", true,
(1 << VIR_CGROUP_CONTROLLER_CPU) |
(1 << VIR_CGROUP_CONTROLLER_CPUACCT) |
(1 << VIR_CGROUP_CONTROLLER_MEMORY),
&cgroup)) != 0) {
fprintf(stderr, "Cannot create LXC cgroup: %d\n", -rv);
goto cleanup;
}
ret = validateCgroup(cgroup, "libvirt/lxc", mountsSmall, links, placementSmall);
virCgroupFree(&cgroup);
if ((rv = virCgroupNewDriver("lxc", true, -1, &cgroup)) != 0) {
fprintf(stderr, "Cannot create LXC cgroup: %d\n", -rv);
goto cleanup;
}
ret = validateCgroup(cgroup, "libvirt/lxc", mountsFull, links, placementFull);
cleanup:
virCgroupFree(&cgroup);
return ret;
}
static int testCgroupNewForDriverDomain(const void *args ATTRIBUTE_UNUSED)
{
virCgroupPtr drivercgroup = NULL;
virCgroupPtr domaincgroup = NULL;
int ret = -1;
int rv;
const char *placement[VIR_CGROUP_CONTROLLER_LAST] = {
[VIR_CGROUP_CONTROLLER_CPU] = "/system/libvirt/lxc/wibble",
[VIR_CGROUP_CONTROLLER_CPUACCT] = "/system/libvirt/lxc/wibble",
[VIR_CGROUP_CONTROLLER_CPUSET] = "/libvirt/lxc/wibble",
[VIR_CGROUP_CONTROLLER_MEMORY] = "/libvirt/lxc/wibble",
[VIR_CGROUP_CONTROLLER_DEVICES] = NULL,
[VIR_CGROUP_CONTROLLER_FREEZER] = "/libvirt/lxc/wibble",
[VIR_CGROUP_CONTROLLER_BLKIO] = "/libvirt/lxc/wibble",
};
if ((rv = virCgroupNewDriver("lxc", false, -1, &drivercgroup)) != 0) {
fprintf(stderr, "Cannot find LXC cgroup: %d\n", -rv);
goto cleanup;
}
if ((rv = virCgroupNewDomainDriver(drivercgroup, "wibble", true, &domaincgroup)) != 0) {
fprintf(stderr, "Cannot create LXC cgroup: %d\n", -rv);
goto cleanup;
}
ret = validateCgroup(domaincgroup, "libvirt/lxc/wibble", mountsFull, links, placement);
cleanup:
virCgroupFree(&drivercgroup);
virCgroupFree(&domaincgroup);
return ret;
}
static int testCgroupNewForPartition(const void *args ATTRIBUTE_UNUSED)
{
virCgroupPtr cgroup = NULL;
int ret = -1;
int rv;
const char *placementSmall[VIR_CGROUP_CONTROLLER_LAST] = {
[VIR_CGROUP_CONTROLLER_CPU] = "/virtualmachines",
[VIR_CGROUP_CONTROLLER_CPUACCT] = "/virtualmachines",
[VIR_CGROUP_CONTROLLER_CPUSET] = NULL,
[VIR_CGROUP_CONTROLLER_MEMORY] = "/virtualmachines",
[VIR_CGROUP_CONTROLLER_DEVICES] = NULL,
[VIR_CGROUP_CONTROLLER_FREEZER] = NULL,
[VIR_CGROUP_CONTROLLER_BLKIO] = NULL,
};
const char *placementFull[VIR_CGROUP_CONTROLLER_LAST] = {
[VIR_CGROUP_CONTROLLER_CPU] = "/virtualmachines",
[VIR_CGROUP_CONTROLLER_CPUACCT] = "/virtualmachines",
[VIR_CGROUP_CONTROLLER_CPUSET] = "/virtualmachines",
[VIR_CGROUP_CONTROLLER_MEMORY] = "/virtualmachines",
[VIR_CGROUP_CONTROLLER_DEVICES] = NULL,
[VIR_CGROUP_CONTROLLER_FREEZER] = "/virtualmachines",
[VIR_CGROUP_CONTROLLER_BLKIO] = "/virtualmachines",
};
if ((rv = virCgroupNewPartition("/virtualmachines", false, -1, &cgroup)) != -ENOENT) {
fprintf(stderr, "Unexpected found /virtualmachines cgroup: %d\n", -rv);
goto cleanup;
}
/* Asking for impossible combination since CPU is co-mounted */
if ((rv = virCgroupNewPartition("/virtualmachines", true,
(1 << VIR_CGROUP_CONTROLLER_CPU),
&cgroup)) != -EINVAL) {
fprintf(stderr, "Should not have created /virtualmachines cgroup: %d\n", -rv);
goto cleanup;
}
/* Asking for impossible combination since devices is not mounted */
if ((rv = virCgroupNewPartition("/virtualmachines", true,
(1 << VIR_CGROUP_CONTROLLER_DEVICES),
&cgroup)) != -ENOENT) {
fprintf(stderr, "Should not have created /virtualmachines cgroup: %d\n", -rv);
goto cleanup;
}
/* Asking for small combination since devices is not mounted */
if ((rv = virCgroupNewPartition("/virtualmachines", true,
(1 << VIR_CGROUP_CONTROLLER_CPU) |
(1 << VIR_CGROUP_CONTROLLER_CPUACCT) |
(1 << VIR_CGROUP_CONTROLLER_MEMORY),
&cgroup)) != 0) {
fprintf(stderr, "Cannot create /virtualmachines cgroup: %d\n", -rv);
goto cleanup;
}
ret = validateCgroup(cgroup, "/virtualmachines", mountsSmall, links, placementSmall);
virCgroupFree(&cgroup);
if ((rv = virCgroupNewPartition("/virtualmachines", true, -1, &cgroup)) != 0) {
fprintf(stderr, "Cannot create /virtualmachines cgroup: %d\n", -rv);
goto cleanup;
}
ret = validateCgroup(cgroup, "/virtualmachines", mountsFull, links, placementFull);
cleanup:
virCgroupFree(&cgroup);
return ret;
}
static int testCgroupNewForPartitionNested(const void *args ATTRIBUTE_UNUSED)
{
virCgroupPtr cgroup = NULL;
int ret = -1;
int rv;
const char *placementFull[VIR_CGROUP_CONTROLLER_LAST] = {
[VIR_CGROUP_CONTROLLER_CPU] = "/users/berrange",
[VIR_CGROUP_CONTROLLER_CPUACCT] = "/users/berrange",
[VIR_CGROUP_CONTROLLER_CPUSET] = "/users/berrange",
[VIR_CGROUP_CONTROLLER_MEMORY] = "/users/berrange",
[VIR_CGROUP_CONTROLLER_DEVICES] = NULL,
[VIR_CGROUP_CONTROLLER_FREEZER] = "/users/berrange",
[VIR_CGROUP_CONTROLLER_BLKIO] = "/users/berrange",
};
if ((rv = virCgroupNewPartition("/users/berrange", false, -1, &cgroup)) != -ENOENT) {
fprintf(stderr, "Unexpected found /users/berrange cgroup: %d\n", -rv);
goto cleanup;
}
/* Should not work, since we require /users to be pre-created */
if ((rv = virCgroupNewPartition("/users/berrange", true, -1, &cgroup)) != -ENOENT) {
fprintf(stderr, "Unexpected created /users/berrange cgroup: %d\n", -rv);
goto cleanup;
}
if ((rv = virCgroupNewPartition("/users", true, -1, &cgroup)) != 0) {
fprintf(stderr, "Failed to create /users cgroup: %d\n", -rv);
goto cleanup;
}
/* Should now work */
if ((rv = virCgroupNewPartition("/users/berrange", true, -1, &cgroup)) != 0) {
fprintf(stderr, "Failed to create /users/berrange cgroup: %d\n", -rv);
goto cleanup;
}
ret = validateCgroup(cgroup, "/users/berrange", mountsFull, links, placementFull);
cleanup:
virCgroupFree(&cgroup);
return ret;
}
static int testCgroupNewForPartitionDomain(const void *args ATTRIBUTE_UNUSED)
{
virCgroupPtr partitioncgroup = NULL;
virCgroupPtr domaincgroup = NULL;
int ret = -1;
int rv;
const char *placement[VIR_CGROUP_CONTROLLER_LAST] = {
[VIR_CGROUP_CONTROLLER_CPU] = "/production/foo.lxc.libvirt",
[VIR_CGROUP_CONTROLLER_CPUACCT] = "/production/foo.lxc.libvirt",
[VIR_CGROUP_CONTROLLER_CPUSET] = "/production/foo.lxc.libvirt",
[VIR_CGROUP_CONTROLLER_MEMORY] = "/production/foo.lxc.libvirt",
[VIR_CGROUP_CONTROLLER_DEVICES] = NULL,
[VIR_CGROUP_CONTROLLER_FREEZER] = "/production/foo.lxc.libvirt",
[VIR_CGROUP_CONTROLLER_BLKIO] = "/production/foo.lxc.libvirt",
};
if ((rv = virCgroupNewPartition("/production", true, -1, &partitioncgroup)) != 0) {
fprintf(stderr, "Failed to create /production cgroup: %d\n", -rv);
goto cleanup;
}
if ((rv = virCgroupNewDomainPartition(partitioncgroup, "lxc", "foo", true, &domaincgroup)) != 0) {
fprintf(stderr, "Cannot create LXC cgroup: %d\n", -rv);
goto cleanup;
}
ret = validateCgroup(domaincgroup, "/production/foo.lxc.libvirt", mountsFull, links, placement);
cleanup:
virCgroupFree(&partitioncgroup);
virCgroupFree(&domaincgroup);
return ret;
}
# define FAKESYSFSDIRTEMPLATE abs_builddir "/fakesysfsdir-XXXXXX"
static int
mymain(void)
{
int ret = 0;
char *fakesysfsdir;
if (!(fakesysfsdir = strdup(FAKESYSFSDIRTEMPLATE))) {
fprintf(stderr, "Out of memory\n");
abort();
}
if (!mkdtemp(fakesysfsdir)) {
fprintf(stderr, "Cannot create fakesysfsdir");
abort();
}
setenv("LIBVIRT_FAKE_SYSFS_DIR", fakesysfsdir, 1);
if (virtTestRun("New cgroup for self", 1, testCgroupNewForSelf, NULL) < 0)
ret = -1;
if (virtTestRun("New cgroup for driver", 1, testCgroupNewForDriver, NULL) < 0)
ret = -1;
if (virtTestRun("New cgroup for domain driver", 1, testCgroupNewForDriverDomain, NULL) < 0)
ret = -1;
if (virtTestRun("New cgroup for partition", 1, testCgroupNewForPartition, NULL) < 0)
ret = -1;
if (virtTestRun("New cgroup for partition nested", 1, testCgroupNewForPartitionNested, NULL) < 0)
ret = -1;
if (virtTestRun("New cgroup for domain partition", 1, testCgroupNewForPartitionDomain, NULL) < 0)
ret = -1;
if (getenv("LIBVIRT_SKIP_CLEANUP") == NULL)
virFileDeleteTree(fakesysfsdir);
VIR_FREE(fakesysfsdir);
return ret==0 ? EXIT_SUCCESS : EXIT_FAILURE;
}
VIRT_TEST_MAIN_PRELOAD(mymain, abs_builddir "/.libs/vircgroupmock.so")
#else
int
main(void)
{
return EXIT_AM_SKIP;
}
#endif