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      1 #include <unistd.h>
      2 #include <sys/types.h>
      3 #include <fcntl.h>
      4 #include <stdlib.h>
      5 #include <errno.h>
      6 #include <string.h>
      7 #include "selinux_internal.h"
      8 #include "policy.h"
      9 #include <stdio.h>
     10 #include <limits.h>
     11 
     12 int security_getenforce(void)
     13 {
     14 	int fd, ret, enforce = 0;
     15 	char path[PATH_MAX];
     16 	char buf[20];
     17 
     18 	if (!selinux_mnt) {
     19 		errno = ENOENT;
     20 		return -1;
     21 	}
     22 
     23 	snprintf(path, sizeof path, "%s/enforce", selinux_mnt);
     24 	fd = open(path, O_RDONLY | O_CLOEXEC);
     25 	if (fd < 0)
     26 		return -1;
     27 
     28 	memset(buf, 0, sizeof buf);
     29 	ret = read(fd, buf, sizeof buf - 1);
     30 	close(fd);
     31 	if (ret < 0)
     32 		return -1;
     33 
     34 	if (sscanf(buf, "%d", &enforce) != 1)
     35 		return -1;
     36 
     37 	return !!enforce;
     38 }
     39 
     40 hidden_def(security_getenforce)
     41