5430f7f2bc
We finally got the OK from all contributors with non-trivial commits to relicense systemd from GPL2+ to LGPL2.1+. Some udev bits continue to be GPL2+ for now, but we are looking into relicensing them too, to allow free copy/paste of all code within systemd. The bits that used to be MIT continue to be MIT. The big benefit of the relicensing is that closed source code may now link against libsystemd-login.so and friends.
113 lines
3.1 KiB
C
113 lines
3.1 KiB
C
/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
|
|
|
|
/***
|
|
This file is part of systemd.
|
|
|
|
Copyright 2010 Lennart Poettering
|
|
|
|
systemd 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.
|
|
|
|
systemd 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 systemd; If not, see <http://www.gnu.org/licenses/>.
|
|
***/
|
|
|
|
#include <unistd.h>
|
|
#include <stdio.h>
|
|
#include <errno.h>
|
|
#include <string.h>
|
|
#include <stdlib.h>
|
|
|
|
#ifdef HAVE_SELINUX
|
|
#include <selinux/selinux.h>
|
|
#endif
|
|
|
|
#include "selinux-setup.h"
|
|
#include "mount-setup.h"
|
|
#include "macro.h"
|
|
#include "util.h"
|
|
#include "log.h"
|
|
#include "label.h"
|
|
|
|
int selinux_setup(bool *loaded_policy) {
|
|
|
|
#ifdef HAVE_SELINUX
|
|
int enforce = 0;
|
|
usec_t before_load, after_load;
|
|
security_context_t con;
|
|
int r;
|
|
|
|
assert(loaded_policy);
|
|
|
|
/* Make sure getcon() works, which needs /proc and /sys */
|
|
mount_setup_early();
|
|
|
|
/* Already initialized by somebody else? */
|
|
r = getcon_raw(&con);
|
|
if (r == 0) {
|
|
bool initialized;
|
|
|
|
initialized = !streq(con, "kernel");
|
|
freecon(con);
|
|
|
|
if (initialized)
|
|
return 0;
|
|
}
|
|
|
|
/* Make sure we have no fds open while loading the policy and
|
|
* transitioning */
|
|
log_close();
|
|
|
|
/* Now load the policy */
|
|
before_load = now(CLOCK_MONOTONIC);
|
|
r = selinux_init_load_policy(&enforce);
|
|
|
|
if (r == 0) {
|
|
char timespan[FORMAT_TIMESPAN_MAX];
|
|
char *label;
|
|
|
|
label_retest_selinux();
|
|
|
|
/* Transition to the new context */
|
|
r = label_get_create_label_from_exe(SYSTEMD_BINARY_PATH, &label);
|
|
if (r < 0 || label == NULL) {
|
|
log_open();
|
|
log_error("Failed to compute init label, ignoring.");
|
|
} else {
|
|
r = setcon(label);
|
|
|
|
log_open();
|
|
if (r < 0)
|
|
log_error("Failed to transition into init label '%s', ignoring.", label);
|
|
|
|
label_free(label);
|
|
}
|
|
|
|
after_load = now(CLOCK_MONOTONIC);
|
|
|
|
log_info("Successfully loaded SELinux policy in %s.",
|
|
format_timespan(timespan, sizeof(timespan), after_load - before_load));
|
|
|
|
*loaded_policy = true;
|
|
|
|
} else {
|
|
log_open();
|
|
|
|
if (enforce > 0) {
|
|
log_error("Failed to load SELinux policy. Freezing.");
|
|
return -EIO;
|
|
} else
|
|
log_debug("Unable to load SELinux policy. Ignoring.");
|
|
}
|
|
#endif
|
|
|
|
return 0;
|
|
}
|