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/*
* OO wrapper for execve
*
* Copyright (C) 2003 Enrico Zini <enrico@debian.org>
*
* 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, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <wibble/sys/exec.h>
#include <string.h> // strdup
#include <unistd.h> // execve
#include <iostream>
extern char **environ;
namespace wibble {
namespace sys {
int Exec::main()
{
try {
exec();
} catch (std::exception& e) {
std::cerr << e.what() << std::endl;
}
return 0;
}
void Exec::importEnv()
{
for (char** s = environ; *s; ++s)
env.push_back(*s);
}
void Exec::exec()
{
// Prepare the argument list
char* exec_args[args.size() + 1];
for (size_t i = 0; i < args.size(); ++i)
exec_args[i] = strdup(args[i].c_str());
exec_args[args.size()] = 0;
if (searchInPath)
{
if (execvp(pathname.c_str(), exec_args) == -1)
throw wibble::exception::System("trying to run " + pathname);
} else if (envFromParent) {
if (execve(pathname.c_str(), exec_args, environ) == -1)
throw wibble::exception::System("trying to run " + pathname);
} else {
// Prepare the custom environment
char* exec_env[env.size() + 1];
for (size_t i = 0; i < env.size(); ++i)
// We can just store a pointer to the internal strings, since later
// we're calling exec and no destructors will be called
exec_env[i] = strdup(env[i].c_str());
exec_env[env.size()] = 0;
if (execve(pathname.c_str(), exec_args, exec_env) == -1)
throw wibble::exception::System("trying to run " + pathname);
}
throw wibble::exception::Consistency(
"trying to run " + pathname,
"Program flow continued after successful exec()");
}
}
}
// vim:set ts=4 sw=4:
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