security_getenforce(3) SELinux API documentation security_getenforce(3)
NAME
security_getenforce, security_setenforce, security_deny_unknown, secu-
rity_reject_unknown, security_get_checkreqprot - get or set the enforc-
ing state of SELinux
SYNOPSIS
#include <selinux/selinux.h>
int security_getenforce(void);
int security_setenforce(int value);
int security_deny_unknown(void);
int security_reject_unknown(void);
int security_get_checkreqprot(void);
DESCRIPTION
security_getenforce() returns 0 if SELinux is running in permissive
mode, 1 if it is running in enforcing mode, and -1 on error.
security_setenforce() sets SELinux to enforcing mode if the value 1 is
passed in, and sets it to permissive mode if 0 is passed in. On suc-
cess 0 is returned, on error -1 is returned.
security_deny_unknown() returns 0 if SELinux treats policy queries on
undefined object classes or permissions as being allowed, 1 if such
queries are denied, and -1 on error.
security_reject_unknown() returns 1 if the current policy was built
with handle-unknown=reject and SELinux would reject loading it, if it
did not define all kernel object classes and permissions. In this
state, when selinux_set_mapping() and selinux_check_access() are used
with an undefined userspace class or permission, an error is returned
and errno is set to EINVAL.
It returns 0 if the current policy was built with handle-unknown=allow
or handle-unknown=deny. In this state, policy queries are treated ac-
cording to security_deny_unknown(). -1 is returned on error.
security_get_checkreqprot() can be used to determine whether SELinux is
configured to check the protection requested by the application or the
actual protection that will be applied by the kernel (including the ef-
fects of READ_IMPLIES_EXEC) on mmap and mprotect calls. It returns 0
if SELinux checks the actual protection, 1 if it checks the requested
protection, and -1 on error.
SEE ALSO
selinux(8)
russell@coker.com.au 1 January 2004 security_getenforce(3)
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