/usr/include/cxxtools/sudo.h is in libcxxtools-dev 2.0-4ubuntu2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 | /*
* Copyright (C) 2003 Tommi Maekitalo
*
* 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.
*
* As a special exception, you may use this file as part of a free
* software library without restriction. Specifically, if other files
* instantiate templates or use macros or inline functions from this
* file, or you compile this file and link it with other files to
* produce an executable, this file does not by itself cause the
* resulting executable to be covered by the GNU General Public
* License. This exception does not however invalidate any other
* reasons why the executable file might be covered by the GNU Library
* General Public License.
*
* 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 CXXTOOLS_SUDO_H
#define CXXTOOLS_SUDO_H
#include <sys/types.h>
#include <utility>
#include <stdlib.h>
namespace cxxtools
{
namespace sudo
{
void set_user(uid_t uid);
void set_user(const char* user);
//////////////////////////////////////////////////////////////////////
// sudo::fork_wait
//
// führt einen ::fork aus.
// Im Child-Prozess wird im ersten Rückgabewert (first) 'false'
// geliefert.
// Der Parent-Prozess wartet auf den Child-Prozess und kehrt erst zurück,
// wenn der Child-Prozess beendet ist. Der erste Rückgabewert ist 'true'.
// Der zweite Rückgabewert (second) liefert den Status des
// Childprozesses.
//
// Im Fehlerfall wird eine std::runtime_error geworfen.
//
std::pair<bool, int> fork_wait();
//////////////////////////////////////////////////////////////////////
// sudo führt die übergebene Funktion, bzw. den Funktor unter der
// angegebenen Benutzerberechtigung aus.
// Der Benutzer wird über die Funktion set_user eingestellt und kann
// so entweder als const char* oder uid_t übergeben werden.
// Im Fehlerfall wird eine std::runtime_error geworfen.
//
// Der Funktor liefert den Rückgabewert.
//
template <typename user_type, typename generator_type>
int sudo(user_type user, generator_type f)
{
std::pair<bool, int> ret = fork_wait();
if (!ret.first)
{
// child
try
{
set_user(user);
exit( f() );
}
catch (...)
{
exit(-1);
}
}
// parent
return ret.second;
}
}
}
#endif // CXXTOOLS_SUDO_H
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