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