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/*
* Copyright IBM Corporation. 2007
*
* Author: Balbir Singh <balbir@linux.vnet.ibm.com>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of version 2.1 of the GNU Lesser General Public License
* as published by the Free Software Foundation.
*
* This program is distributed in the hope that it would be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
*
* Basic acceptance test for libcgroup - Written one late night by Balbir Singh
*/
using namespace std;
#include <string>
#include <stdexcept>
#include <iostream>
#include <libcgroup.h>
#include <sys/types.h>
#include <pwd.h>
#include <errno.h>
#include <stdlib.h>
#include <string.h>
#include "../config.h"
#ifdef CGROUP_DBG
#define cgroup_dbg(p...) printf(p...)
#else
#define cgroup_dbg(p...) do {} while (0)
#endif
namespace cgtest {
class cg {
private:
public:
cg();
~cg()
{ }
struct cgroup *makenode(const string &name, const string &task_uid,
const string &task_gid, const string &control_uid,
const string &control_gid);
struct cgroup *makenodefromparent(const string &name);
};
cg::cg(void)
{
int ret;
ret = cgroup_init();
if (ret)
throw logic_error("Control Group Initialization failed..."
"Please check that cgroups are mounted and\n"
"at a single place");
}
struct cgroup *cg::makenode(const string &name, const string &task_uid,
const string &task_gid, const string &control_uid,
const string &control_gid)
{
uid_t tuid, cuid;
gid_t tgid, cgid;
char *cgroup_name;
struct cgroup *ccg;
struct cgroup_controller *cpu, *cpuacct;
struct passwd *passwd;
struct group *grp;
int ret;
passwd = getpwnam(task_uid.c_str());
if (!passwd)
return NULL;
tuid = passwd->pw_uid;
grp = getgrnam(task_gid.c_str());
if (!grp)
return NULL;
tgid = grp->gr_gid;
passwd = getpwnam(control_uid.c_str());
if (!passwd)
return NULL;
cuid = passwd->pw_uid;
grp = getgrnam(control_gid.c_str());
if (!grp)
return NULL;
cgid = grp->gr_gid;
cgroup_dbg("tuid %d, tgid %d, cuid %d, cgid %d\n", tuid, tgid, cuid, cgid);
cgroup_name = (char *) malloc(name.length());
strncpy(cgroup_name, name.c_str(), name.length() + 1);
ccg = cgroup_new_cgroup(cgroup_name);
cgroup_set_uid_gid(ccg, tuid, tgid, cuid, cgid);
cpu = cgroup_add_controller(ccg, "cpu");
cgroup_add_value_uint64(cpu, "cpu.shares", 2048);
cpuacct = cgroup_add_controller(ccg, "cpuacct");
cgroup_add_value_uint64(cpuacct, "cpuacct.usage", 0);
ret = cgroup_create_cgroup(ccg, 1);
if (ret) {
cout << "cg create group failed " << errno << endl;
ret = cgroup_delete_cgroup(ccg, 1);
if (ret)
cout << "cg delete group failed " << errno << endl;
}
return ccg;
}
struct cgroup *cg::makenodefromparent(const string &name)
{
char *cgroup_name;
struct cgroup *ccg;
int ret;
cgroup_name = (char *) malloc(name.length());
memset(cgroup_name, '\0', name.length());
strcpy(cgroup_name, name.c_str());
ccg = cgroup_new_cgroup(cgroup_name);
ret = cgroup_create_cgroup_from_parent(ccg, 1);
if (ret) {
cout << "cg create group failed " << errno << endl;
ret = cgroup_delete_cgroup(ccg, 1);
if (ret)
cout << "cg delete group failed " << errno << endl;
}
return ccg;
}
} // namespace
using namespace cgtest;
int main(int argc, char *argv[])
{
try {
cg *app = new cg();
struct cgroup *ccg, *ccg_child1, *ccg_child2;
ccg = app->makenode("database", "root", "root", "balbir",
"balbir");
ccg_child1 = app->makenodefromparent("mysql");
ccg_child2 = app->makenodefromparent("mysql/db1");
cgroup_free(&ccg);
cgroup_free(&ccg_child1);
cgroup_free(&ccg_child2);
delete app;
} catch (exception &e) {
cout << e.what() << endl;
exit(1);
}
return 0;
}
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