d682b3a7e7
Always cache the results, and bypass low-level security calls when the respective subsystem is not enabled.
42 lines
1.2 KiB
C
42 lines
1.2 KiB
C
/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
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/***
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This file is part of systemd.
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Copyright 2013 Lennart Poettering
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systemd is free software; you can redistribute it and/or modify it
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under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2.1 of the License, or
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(at your option) any later version.
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systemd is distributed in the hope that it will be useful, but
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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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You should have received a copy of the GNU Lesser General Public License
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along with systemd; If not, see <http://www.gnu.org/licenses/>.
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***/
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#include <unistd.h>
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#include "util.h"
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#include "fileio.h"
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#include "apparmor-util.h"
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static int use_apparmor_cached = -1;
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bool use_apparmor(void) {
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if (use_apparmor_cached < 0) {
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_cleanup_free_ char *p = NULL;
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use_apparmor_cached =
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read_one_line_file("/sys/module/apparmor/parameters/enabled", &p) >= 0 &&
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parse_boolean(p) > 0;
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}
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return use_apparmor_cached;
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}
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