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/*
* Copyright (C) 2011 Intel Corporation
*
* 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) version 3.
*
* 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, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
* 02110-1301 USA
*/
#ifndef RESTART_H
#define RESTART_H
#include <vector>
#include <string>
#include <errno.h>
#include <boost/scoped_array.hpp>
#include <syncevo/LogRedirect.h>
#include <syncevo/declarations.h>
SE_BEGIN_CXX
/**
* Encapsulates startup environment from main() and can do execve()
* with it later on. Assumes that argv[0] is the executable to run.
*/
class Restart
{
std::vector<std::string> m_argv;
std::vector<std::string> m_env;
void saveArray(std::vector<std::string> &array, char **p)
{
while(*p) {
array.push_back(*p);
p++;
}
}
const char **createArray(const std::vector<std::string> &array)
{
const char **res = new const char *[(array.size() + 1)];
size_t i;
for (i = 0; i < array.size(); i++) {
res[i] = array[i].c_str();
}
res[i] = NULL;
return res;
}
public:
Restart(char **argv, char **env)
{
saveArray(m_argv, argv);
saveArray(m_env, env);
}
void restart()
{
boost::scoped_array<const char *> argv(createArray(m_argv));
boost::scoped_array<const char *> env(createArray(m_env));
LogRedirect::reset();
if (execve(argv[0], (char *const *)argv.get(), (char *const *)env.get())) {
SE_THROW(StringPrintf("restarting syncevo-dbus-server failed: %s", strerror(errno)));
}
}
};
SE_END_CXX
#endif // RESTART_H
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