90 lines
2.2 KiB
C
90 lines
2.2 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 Intel Corporation
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Author: Auke Kok <auke-jan.h.kok@intel.com>
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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 <string.h>
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#include <sys/xattr.h>
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#include "smack-util.h"
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bool use_smack(void) {
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#ifdef HAVE_SMACK
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static int use_smack_cached = -1;
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if (use_smack_cached < 0)
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use_smack_cached = access("/sys/fs/smackfs/", F_OK) >= 0;
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return use_smack_cached;
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#else
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return false;
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#endif
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}
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int smack_label_path(const char *path, const char *label) {
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#ifdef HAVE_SMACK
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if (!use_smack())
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return 0;
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if (label)
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return setxattr(path, "security.SMACK64", label, strlen(label), 0);
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else
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return lremovexattr(path, "security.SMACK64");
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#else
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return 0;
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#endif
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}
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int smack_label_fd(int fd, const char *label) {
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#ifdef HAVE_SMACK
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if (!use_smack())
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return 0;
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return fsetxattr(fd, "security.SMACK64", label, strlen(label), 0);
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#else
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return 0;
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#endif
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}
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int smack_label_ip_out_fd(int fd, const char *label) {
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#ifdef HAVE_SMACK
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if (!use_smack())
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return 0;
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return fsetxattr(fd, "security.SMACK64IPOUT", label, strlen(label), 0);
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#else
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return 0;
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#endif
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}
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int smack_label_ip_in_fd(int fd, const char *label) {
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#ifdef HAVE_SMACK
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if (!use_smack())
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return 0;
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return fsetxattr(fd, "security.SMACK64IPIN", label, strlen(label), 0);
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#else
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return 0;
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#endif
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}
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