blob: fdd32b50a2466cd05b50128906ab86b8ba0fde40 [file] [log] [blame]
#include <unistd.h>
#include <sys/types.h>
#include <fcntl.h>
#include <stdlib.h>
#include <errno.h>
#include <string.h>
#include "selinux_internal.h"
#include "policy.h"
#include <stdio.h>
#include <limits.h>
int security_deny_unknown(void)
{
int fd, ret, deny_unknown = 0;
char path[PATH_MAX];
char buf[20];
if (!selinux_mnt) {
errno = ENOENT;
return -1;
}
snprintf(path, sizeof(path), "%s/deny_unknown", selinux_mnt);
fd = open(path, O_RDONLY | O_CLOEXEC);
if (fd < 0)
return -1;
memset(buf, 0, sizeof(buf));
ret = read(fd, buf, sizeof(buf) - 1);
close(fd);
if (ret < 0)
return -1;
if (sscanf(buf, "%d", &deny_unknown) != 1)
return -1;
return deny_unknown;
}