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/*
* libexplain - Explain errno values returned by libc functions
* Copyright (C) 2008, 2009, 2013 Peter Miller
* Written by Peter Miller <pmiller@opensource.org.au>
*
* This program 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 3 of the
* License, or (at your option) any later version.
*
* This program 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 program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <libexplain/ac/sys/capability.h>
#include <libexplain/ac/unistd.h>
#include <libexplain/capability.h>
int
explain_capability(int cap)
{
#ifdef HAVE_CAP_GET_PROC
cap_t cap_p;
cap_p = cap_get_proc();
if (cap_p)
{
cap_flag_t set;
cap_flag_value_t value;
int result;
set = CAP_EFFECTIVE;
if (cap_get_flag(cap_p, cap, set, &value) < 0)
value = CAP_CLEAR;
/*
* using a temp variable 'result' in case cap_flag_value_t is
* implemented as a pointer that is invalid after cap_free()
*/
result = (value != CAP_CLEAR);
cap_free(cap_p);
return result;
}
#else
(void)cap;
#endif
return (geteuid() == 0);
}
/* vim: set ts=8 sw=4 et : */
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