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| #include <unistd.h>
| #include <sys/types.h>
| #include <fcntl.h>
| #include <stdlib.h>
| #include <errno.h>
| #include <string.h>
| #include "selinux_internal.h"
| #include <stdio.h>
| #include "policy.h"
| #include "dso.h"
| #include <limits.h>
|
| int security_policyvers(void)
| {
| int fd, ret;
| char path[PATH_MAX];
| char buf[20];
| unsigned vers = DEFAULT_POLICY_VERSION;
|
| if (!selinux_mnt) {
| errno = ENOENT;
| return -1;
| }
|
| snprintf(path, sizeof path, "%s/policyvers", selinux_mnt);
| fd = open(path, O_RDONLY | O_CLOEXEC);
| if (fd < 0) {
| if (errno == ENOENT)
| return vers;
| else
| return -1;
| }
| memset(buf, 0, sizeof buf);
| ret = read(fd, buf, sizeof buf - 1);
| close(fd);
| if (ret < 0)
| return -1;
|
| if (sscanf(buf, "%u", &vers) != 1)
| return -1;
|
| return vers;
| }
|
| hidden_def(security_policyvers)
|
|
