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/*
* selinux.c - Various SELinux related functionality needed for the loader.
*
* Jeremy Katz <katzj@redhat.com>
*
* Copyright 2004 Red Hat, Inc.
* Portions extracted from libselinux which was released as public domain
* software by the NSA.
*
* This software may be freely redistributed under the terms of the GNU
* General Public License.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <fcntl.h>
#include <errno.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <string.h>
#include "loader.h"
#include "loadermisc.h"
#include "log.h"
int loadpolicy() {
int pid, status;
logMessage(INFO, "Loading SELinux policy");
if (symlink("/mnt/runtime/etc/selinux", "/etc/selinux") == -1) {
logMessage(ERROR, "unable to create /etc/selinux symlink: %s",
strerror(errno));
return 1;
}
if (!(pid = fork())) {
setenv("LD_LIBRARY_PATH", LIBPATH, 1);
execl("/usr/sbin/load_policy",
"/usr/sbin/load_policy", "-q", "-b", NULL);
logMessage(ERROR, "exec of load_policy failed: %s", strerror(errno));
exit(1);
}
waitpid(pid, &status, 0);
if (WIFEXITED(status) && (WEXITSTATUS(status) != 0))
return 1;
return 0;
}
/* set a context for execution, from libselinux */
int setexeccon(char * context) {
int fd;
ssize_t ret;
fd = open("/proc/self/attr/exec", O_RDWR);
if (fd < 0)
return -1;
if (context)
ret = write(fd, context, strlen(context)+1);
else
ret = write(fd, NULL, 0); /* clear */
close(fd);
if (ret < 0)
return -1;
else
return 0;
}
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